{"id":235,"date":"2025-08-28T22:20:22","date_gmt":"2025-08-28T14:20:22","guid":{"rendered":"http:\/\/43.139.99.192\/?p=235"},"modified":"2025-10-09T15:38:22","modified_gmt":"2025-10-09T07:38:22","slug":"2025%e6%9c%80%e6%96%b0java%e5%85%ab%e8%82%a1%e6%96%87%ef%bc%88%e5%ae%8c%e6%95%b4%e7%89%88%ef%bc%89","status":"publish","type":"post","link":"http:\/\/43.139.99.192\/index.php\/2025\/08\/28\/2025%e6%9c%80%e6%96%b0java%e5%85%ab%e8%82%a1%e6%96%87%ef%bc%88%e5%ae%8c%e6%95%b4%e7%89%88%ef%bc%89\/","title":{"rendered":"2025\u6700\u65b0Java\u516b\u80a1\u6587\uff08\u5b8c\u6574\u7248\uff09"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u300eJava\u516b\u80a1\u6587\u300fJava\u9762\u8bd5\u5957\u8def\uff0cJava\u8fdb\u9636\u5b66\u4e60<a href=\"https:\/\/gitee.com\/CoderLeixiaoshuai\/java-eight-part\">https:\/\/gitee.com\/CoderLeixiaoshuai\/java-eight-part<\/a><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">JAVA\u57fa\u7840\u516b\u80a1\u6587<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1ajava\u4e2d\u5e8f\u5217\u5316\u662f\u600e\u4e48\u5b9e\u73b0\u7684\u5462\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5b9e\u73b0Serializable\u63a5\u53e3\uff0c\u5c31\u4f1a\u5b9e\u73b0\u6570\u636e\u5e8f\u5217\u5316\u7684\u6548\u679c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u8c03\u7528json\u505a\u5e8f\u5217\u5316\u3002\uff08\u5c31\u6bd4\u5982\uff1aJackson\uff0cfastjson\u7b49\u7b49\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u5b9e\u73b0Enternalizable\u63a5\u53e3\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u53cd\u5e8f\u5217\u5316\u7684\u6548\u679c\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee:java\u7684\u6d41\u6709\u54ea\u4e9b\u5462\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ece\u65b9\u5411\u65b9\u9762\uff0c\u4e3b\u8981\u5c31\u662f\u8f93\u5165\u6d41\u548c\u8f93\u51fa\u6d41\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ece\u5355\u4f4d\u65b9\u9762\uff0c\u4e3b\u8981\u5c31\u662f\u5206\u4e3a\u5b57\u8282\u6d41\u548c\u5b57\u7b26\u6d41\u3002\u5b57\u8282\u6d41\u4e3b\u8981\u5c31\u662fInputStream\uff0cOutputStream\u3002\u5b57\u7b26\u6d41\u4e3b\u8981\u5c31\u662fReader\uff0cWriter\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u62bd\u8c61\u7c7b\u548c\u63a5\u53e3\u6709\u4ec0\u4e48\u533a\u522b\u5462\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ece\u65b9\u6cd5\u7f16\u5199\u65b9\u9762\uff0c\u62bd\u8c61\u7c7b\u4e2d\u53ef\u4ee5\u62bd\u8c61\u65b9\u6cd5\u548c\u666e\u901a\u65b9\u6cd5\uff0c\u800c\u63a5\u53e3\u4e2d\u53ea\u80fd\u7f16\u5199\u62bd\u8c61\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ece\u7ee7\u627f\u548c\u5b9e\u73b0\u65b9\u9762\uff0c\u62bd\u8c61\u65b9\u6cd5\u53ea\u80fd\u7ee7\u627f\u4e00\u4e2a\u7c7b\u5e76\u4e14\u53ef\u4ee5\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3\uff0c\u800c\u63a5\u53e3\u53ef\u4ee5\u7ee7\u627f\u591a\u4e2a\u63a5\u53e3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u53d8\u91cf\u7684\u5b9a\u4e49\u65b9\u9762\uff0c\u63a5\u53e3\u53ea\u80fd\u5b9a\u4e49\u9759\u6001\u53d8\u91cf\uff0c\u62bd\u8c61\u7c7b\u53ef\u4ee5\u5b9a\u4e49\u666e\u901a\u53d8\u91cf\u548c\u9759\u6001\u53d8\u91cf\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u95ee\uff1afinal\u5173\u952e\u503c\u6709\u4e86\u89e3\u8fc7\u5417\uff1f<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u4fee\u9970\u65b9\u6cd5\u7684\u65f6\u5019\uff0c\u8bf4\u660e\u8be5\u65b9\u6cd5\u65e0\u6cd5\u88ab\u91cd\u5199\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u4fee\u9970\u7c7b\u7684\u65f6\u5019\uff0c\u8bf4\u660e\u8be5\u7c7b\u65e0\u6cd5\u88ab\u7ee7\u627f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u4fee\u9970\u5c5e\u6027\u7684\u65f6\u5019\uff0c\u8bf4\u660e\u8be5\u53d8\u91cf\u4ece\u521b\u5efa\u5230\u9500\u6bc1\u8fc7\u7a0b\u4e2d\u4e0d\u4f1a\u6539\u53d8\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u4fee\u9970\u5f62\u53c2\u7684\u65f6\u5019\uff0c\u8bf4\u660e\u8be5\u5f62\u53c2\u7684\u5f15\u7528\u5728\u65b9\u6cd5\u6267\u884c\u524d\u540e\u90fd\u4f1a\u4e0d\u53d1\u751f\u6539\u53d8\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u5f02\u5e38\u7c7b\u6709\u54ea\u4e9b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f02\u5e38\u4e3b\u8981\u5c31\u662fException\uff0cError\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Exception\u4e3b\u8981\u5c31\u662f\u8fd0\u884c\u65f6\u5f02\u5e38\u548c\u68c0\u67e5\u65f6\u5f02\u5e38\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u4ee3\u7801\u6076\u7684\u6b63\u5e38\u8fd0\u884c\uff0c\u6211\u4eec\u9700\u8981\u4e3b\u52a8\u4f7f\u7528try\/catch\u8fdb\u884c\u6355\u83b7\uff0c\u5e38\u89c1\u7684\u5c31\u662fIoEception\uff0cSQLExceptinon\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Error\u4e3b\u8981\u5c31\u662f\u5c31\u662f\u53d1\u751f\u5728\u8fd0\u884c\u65f6\u7684\u5f02\u5e38\uff0c\u5c31\u6bd4\u5982\uff1aoom\uff0cthreadDeath\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aFilter\u548cInterceptor\u6709\u8bf4\u660e\u533a\u522b\uff1f\u54ea\u4e2a\u5148\u6267\u884c\u5462\uff1f<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5728\u4f5c\u7528\u57df\u65b9\u9762\uff0cFilter\u4f5c\u7528\u57df\u6bcf\u4e2a\u8bf7\u6c42\uff0c\u800cinterceptor\u4e3b\u8981\u5c31\u662f\u5bf9Controller\u65b9\u6cd5\u7684\u8bf7\u6c42\u8d77\u4f5c\u7528\u3002<\/li>\n\n\n\n<li>\u5728\u6267\u884c\u65f6\u673a\u65b9\u9762\uff0cfilter\u4f1a\u5728\u8bf7\u6c42\u52a0\u5165dispatchServlet\u524d\u548c\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u524d\u6267\u884c\uff0c\u800cinterceptor\u4f1a\u5728\u6267\u884cController\u65b9\u6cd5\u7684\u65f6\u5019\u548c\u8fdb\u884c\u89c6\u56fe\u6e32\u67d3\u524d\u6267\u884c\u3002<\/li>\n\n\n\n<li>Filter\u4f1a\u50cf\u6267\u884c\u800cinterceptor\u968f\u540e\u6267\u884c\u3002<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1ajava\u4e2d\u5171\u4eab\u53d8\u91cf\u6709\u54ea\u4e9b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u9759\u6001\u53d8\u91cf\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u4f7f\u7528Voliate\u4fee\u9970java\u4e2d\u5f97\u53d8\u91cf\u5c31\u4f1a\u53d8\u6210\u5171\u4eab\u53d8\u91cf\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u7f16\u5199sigleton\u51fd\u6570?\uff08\u5355\u4f8b\u6a21\u5f0f\uff09<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u997f\u6c49\u5f0f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class sigleton {\n    \/\/\u997f\u6c49\u5f0f,\u6bcf\u6b21\u90fd\u4f1a\u521b\u5efa\u597d,\u5373\u4f7f\u6ca1\u6709\u8c03\u7528\n    private final static Test test = new Test();\n    public Test getInstance() {\n        return test;\n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u61d2\u6c49\u5f0f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class sigleton {\n    \/\/\u61d2\u6c49\u5f0f\uff0c\u53ea\u6709\u5728\u88ab\u7b2c\u4e00\u6b21\u8c03\u7528\u65f6\u624d\u4f1a\u88ab\u521b\u5efa\n    private static Test test;\n    public Test getInstance() {\n        return test == null ? new Test() : test;\n    }\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">Redis\u516b\u80a1\u6587<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aRedis\u6570\u636e\u7ed3\u6784\u7684\u5e95\u5c42\u5b9e\u73b0\u7531\u4e86\u89e3\u8fc7\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">String\u7c7b\u578b\u7684\u5e95\u5c42\u4f7f\u7528\u52a8\u6001\u5b57\u7b26\u4e32\u5b9e\u73b0\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">List\u7c7b\u578b\u7684\u5e95\u5c42\u4f7f\u7528\u53cc\u5411\u94fe\u8868+\u538b\u7f29\u6570\u7ec4\u5b9e\u73b0\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">set\u7c7b\u578b\u7684\u5e95\u5c42\u4f7f\u7528\u54c8\u5e0c\u8868+\u6570\u7ec4\u6574\u6570\u6570\u7ec4\u5b9e\u73b0\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">hash\u7c7b\u578b\u7684\u5e95\u5c42\u4f7f\u7528\u538b\u7f29\u6570\u7ec4+\u54c8\u5e0c\u8868\u5b9e\u73b0\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">zset\u7c7b\u578b\u7684\u5e95\u5c42\u4f7f\u7528\u538b\u7f29\u6570\u7ec4+\u8df3\u8868\u5b9e\u73b0\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\c934af1f6fe9947ce8a71e4feda90501.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\c934af1f6fe9947ce8a71e4feda90501.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1azset\u7684\u5e95\u5c42\u7ed3\u6784\u6709\u4e86\u89e3\u8fc7\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">zset\u7684\u5e95\u5c42\u7ed3\u6784\u4e3b\u8981\u5c31\u662f\u8df3\u8868+\u538b\u7f29\u5217\u8868\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u538b\u7f29\u5217\u8868\uff1a\u672c\u8d28\u5c31\u662f\u4e00\u4e2a\u6570\u7ec4\uff0c\u5728\u5176\u4e2d\u8bb0\u5f55 \u5217\u8868\u7684\u957f\u5ea6\uff0c\u5c3e\u90e8\u5f97\u504f\u79fb\u91cf\uff0c\u5217\u8868\u7684\u4e2a\u6570\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8df3\u8868\uff1a\u5c31\u662f\u57fa\u4e8e\u4e8c\u5206\u67e5\u627e\u7684\u601d\u60f3\uff0c\u5bf9\u94fe\u8868\u521b\u5efa\u591a\u7ea7\u7d22\u5f15\uff0c\u5c31\u662f\u57fa\u4e8e\u6bcf\u9694\u4e00\u4e2a\u8282\u70b9\u505a\u7d22\u5f15\uff0c\u4ee5\u6b64\u7c7b\u63a8\uff0c\u521b\u5efa\u7d22\u5f15\u7684\u5c42\u6570\u5c31\u662f logn + 1\u3002\u6574\u4e2a\u67e5\u627e\u8fc7\u7a0b\u5c31\u662f\u5728\u591a\u7ea7\u7d22\u5f15\u95f4\u8df3\u6765\u8df3\u53bb\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u6211\u770b\u4f60\u5728\u505a\u9879\u76ee\u7684\u65f6\u5019\u90fd\u4f7f\u7528\u5230redis\uff0c\u4f60\u5728\u6700\u8fd1\u7684\u9879\u76ee\u4e2d\u54ea\u4e9b\u573a\u666f\u4e0b\u4f7f\u7528redis\u5462?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u7f13\u5b58\u548c\u5206\u5e03\u5f0f\u9501\u90fd\u6709\u4f7f\u7528\u5230\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u95ee\uff1a\u8bf4\u8bf4\u5728\u7f13\u5b58\u65b9\u9762\u4f7f\u7528<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5728\u6211\u6700\u5199\u7684\u7269\u6d41\u9879\u76ee\u4e2d\u5c31\u4f7f\u7528redis\u4f5c\u4e3a\u7f13\u5b58\uff0c\u5f53\u7136\u5728\u4e1a\u52a1\u4e2d\u8fd8\u662f\u6bd4\u8f83\u590d\u6742\u7684\u3002<\/p>\n\n\n\n<p 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class=\"wp-block-paragraph\">\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uff081\uff09\u4e0d\u7ed9\u70ed\u70b9key\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff08\u5728redis\u4e2d\u8bbe\u7f6e\u7684\u8fc7\u671f\u65f6\u95f4\u90fd\u662f\u903b\u8f91\u8fc7\u671f\u65f6\u95f4\uff0c\u901a\u8fc7\u903b\u8f91\u5b57\u6bb5\u6765\u5224\u65adkey\u662f\u5426\u8fc7\u671f\uff09\u3002<\/p>\n\n\n\n<p 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class=\"wp-block-paragraph\">3.\u7f13\u5b58\u7a7f\u900f:\u67e5\u8be2\u7684key\u5728\u7f13\u5b58\u548c\u6570\u636e\u5e93\u4e2d\u90fd\u4e0d\u5b58\u5728\uff0c\u6bcf\u6b21\u90fd\u4f1a\u8fdb\u5165\u6570\u636e\u5e93\u67e5\u8be2\uff0c\u5f53\u5927\u91cf\u7684\u8fd9\u79cdkey\u8bbf\u95ee\u6570\u636e\u5e93\uff0c\u5c31\u4f1a\u5bfc\u81f4\u7f13\u5b58\u7a7f\u900f\u3002\uff08\u8fd9\u79cd\u60c5\u51b5\u591a\u534a\u4e0a\u662f\u6076\u610f\u653b\u51fb\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u89e3\u51b3\u65b9\u6848:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">(1)\u5728\u7f13\u5b58\u4e2d\u50a8\u5b58\u7a7a\u503c\uff1a\u5f53\u5728\u6570\u636e\u5e93\u4e2d\u6ca1\u6709\u67e5\u5230\u6570\u636e\u65f6\uff0c\u5c06key\u5173\u8054null\u7684\u952e\u503c\u5bf9\u5b58\u50a8\u5230\u7f13\u5b58\u4e2d\uff0c\u540e\u7eed\u5c31\u4f1a\u8d70\u7f13\u5b58\uff0c\u8fd9\u79cd\u89e3\u51b3\u65b9\u6848\u7f3a\u70b9\u5f88\u660e\u663e\uff0c\u5c31\u662f\u5b58\u50a8\u5927\u91cf\u65e0\u7528\u7684\u5b58\u50a8\uff0c\u6d6a\u8d39\u7a7a\u95f4\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">(2)\u4f7f\u7528\u5e03\u9686\u8fc7\u6ee4\u5668\uff1a\u5728\u67e5\u8be2\u7f13\u5b58\u7684\u65f6\u5019\u5148\u53bb\u5e03\u9686\u8fc7\u6ee4\u5668\u4e2d\u67e5\u8be2\u662f\u5426\u5b58\u5728\u7f13\u5b58\uff0c\u518d\u53bb\u67e5\u8be2\u7f13\u5b58\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u95ee\uff1a\u5177\u4f53\u8bb2\u8bb2\u4f60\u5bf9\u8fd9\u4e2a\u5e03\u9686\u8fc7\u6ee4\u5668\u7406\u89e3\uff1f<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e03\u9686\u8fc7\u6ee4\u5668\u7c7b\u4f3chash\u8868\u53eb\u505abitmap(\u4f4d\u56fe)\uff0c\u5728\u6ca1\u6709\u4f4d\u7f6e\u5b58\u653e\u7684\u662f\u4e8c\u8fdb\u5236\u7684\u6570\u636e\uff0c1\u8868\u793a\u5b58\u5728\uff0c0\u8868\u793a\u4e0d\u5b58\u5728\u3002\u901a\u8fc7\u54c8\u5e0c\u51fd\u6570\u8ba1\u7b97\u50a8\u5b58\u4f4d\u7f6e\u3002\u5728\u540e\u7eed\u67e5\u8be2\u7f13\u5b58\u524d\u5148\u53bb\u5e03\u9686\u8fc7\u6ee4\u5668\u4e2d\u67e5\u8be2\u6570\u636e\u662f\u5426\u5b58\u5728\uff0c\u5982\u679c\u5b58\u5728\u624d\u53bb\u67e5\u7f13\u5b58\uff0c\u5982\u679c\u4e0d\u5b58\u5728\u5c31\u76f4\u63a5\u8fd4\u56de\u7a7a\u3002<\/p>\n\n\n\n<p 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class=\"wp-block-paragraph\">\u6211\u4eec\u4e3b\u8981\u662f\u6839\u636eredisson\u8bbe\u7f6e\u5e03\u9686\u8fc7\u6ee4\u5668\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u5176\u8bef\u5224\u7387\u3002\u5728\u9ad8\u5e76\u53d1\u7684\u573a\u666f\u4e0b\uff0c\u4e00\u822c\u8bef\u5224\u7387\u63a7\u5236\u57285%\u4e4b\u5185\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u95ee\uff1a\u8bf4\u8bf4\u5206\u5e03\u5f0f\u9501\u65b9\u9762\u7684\u4f7f\u7528<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u9879\u76ee\u7684\u652f\u4ed8\u6a21\u5757\u4e2d\u7684\u626b\u7801\u652f\u4ed8\u4e3a\u4e86\u4fdd\u8bc1\u4ea4\u6613\u5355\u7684\u72b6\u6001\u4e0d\u4f1a\u88ab\u9664\u5f53\u524d\u4e1a\u52a1\u7684\u5176\u4ed6\u4e1a\u52a1\u4fee\u6539\uff0c\u8ba1\u7b97\u8fd0\u529b\uff0c\u6211\u4eec\u90fd\u4f1a\u4f7f\u7528\u5206\u5e03\u5f0f\u9501\u3002<\/p>\n\n\n\n<h4 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class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u5206\u5e03\u5f0f\u9501\u53ef\u4ee5\u5b9e\u73b0\u91cd\u5165\u5417\uff1f<\/strong><br>\u91cd\u5165\u7684\u610f\u601d\u5c31\u662f\uff1a\u5728\u540c\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u83b7\u53d6\u9501\u540e\u7ee7\u7eed\u83b7\u53d6\u9501\u3002\u56e0\u4e3a\u6211\u4eec\u5206\u5e03\u5f0f\u9501\u4e2d\u5c0fkey\u4f7f\u7528\u7684\u662f\u7ebf\u7a0bid\uff0cvalue\u5c31\u662f\u4e0a\u9501\u7684\u6b21\u6570\uff0c\u6211\u4eec\u6bcf\u6b21\u8fdb\u884c\u91cd\u5165\u65f6\u5c31\u662fvalue\u503c+1\uff0c\u5728\u91ca\u653e\u9501\u7684\u65f6\u5019\uff0c\u5c31\u5c06\u5bf9\u5e94\u7684value-1\uff0c\u5728value\u4e3a0\u7684\u65f6\u5019\u5c31\u5220\u9664\u5bf9\u5e94\u7684\u4fe1\u606f\u3002\u5176\u4ed6\u5fae\u670d\u52a1\u5c31\u53ef\u4ee5\u83b7\u53d6\u6b64\u5206\u5e03\u5f0f\u9501\u4e86\u3002\u901a\u8fc7\u7ebf\u7a0bid\u7684\u4e0d\u540c\u6765\u4fdd\u8bc1\u5206\u5e03\u5f0f\u9501\u7684\u4e92\u65a5\u3002\uff08\u84dd\u5b57\u9009\u7b54\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1aredisson\u5b9e\u73b0\u7684\u5206\u5e03\u5f0f\u9501\uff0c\u53ef\u4ee5\u89e3\u51b3\u4e3b\u4ece\u4e00\u81f4\u6027\u7684\u95ee\u9898\u5417\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u80fd\u89e3\u51b3\u4e3b\u4ece\u4e00\u81f4\u7684\u95ee\u9898\uff0c\u5355master\u8282\u70b9\u83b7\u53d6\u9501\u540e\u5c31\u6ca1\u91ca\u653e\u9501\u5c31\u5b95\u673a\u4e86\uff0c\u6b64\u65f6slave\u8282\u70b9\u53d8\u6210\u4e86master\u8282\u70b9\uff0c\u56e0\u4e3a\u65b0\u7684master\u6ca1\u6709\u4e0a\u9501\uff0c\u6240\u4ee5\u65b0\u7684master\u4f1a\u8fdb\u884c\u4e0a\u9501\uff0c\u7834\u574f\u4e86\u9501\u7684\u4e92\u65a5\u6027\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u7ea2\u9501\uff0c\u4e5f\u5c31\u662f\u7ed9\u4e00\u822c\u4ee5\u4e0a\u7684\u8282\u70b9\u6dfb\u52a0\u5206\u5e03\u5f0f\u9501\uff0c\u4f46\u662f\u8fd9\u6837\u6548\u7387\u5c31\u53d8\u7684\u5f88\u4f4e\uff0c\u4e3a\u4e86\u63d0\u9ad8\u6548\u7387\uff0c\u5efa\u8bae\u91c7\u7528zookeeper\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u3002\uff08\u542c\u8bf4\u8fc7zookeeper\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u5728\u96c6\u7fa4\u7684\u9879\u76ee\u4e2d\u4e3a\u4ec0\u4e48\u4e0d\u80fd\u7528\u5173\u952e\u5b57synchronized\u5462\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u4e24\u4e2a\u5fae\u670d\u52a1\u4e2d\uff0c\u5982\u679c\u4f7f\u7528synchronized\u662f\u65e0\u6cd5\u8fbe\u5230\u540c\u6b65\u4e0a\u9501\u6548\u679c\uff0c\u56e0\u4e3a\u4e24\u4e2a\u5fae\u670d\u52a1\u662f\u4e24\u4e2a\u5355\u72ec\u7684JVM\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u95ee\uff1a\u4e86\u89e3\u8fc7\u53cc\u5199\u4e00\u81f4\u6027\u5417\uff1f<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u53cc\u5199\u4e00\u81f4\u6027\uff1a\u5f53\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u53d1\u751f\u4fee\u6539\u7684\u65f6\u5019\uff0c\u6211\u4eec\u9700\u8981\u4fee\u6539\u7f13\u5b58\u4e2d\u7684\u6570\u636e\uff0c\u4fdd\u8bc1\u6570\u636e\u5e93\u548c\u7f13\u5b58\u4e2d\u7684\u4fe1\u606f\u76f8\u540c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><img decoding=\"async\" src=\"images\\6d4334b7e030492559c1c76e03c40a09.png\" alt=\"5ca96488062247719ff154f01f561e60.png\">\u5728\u8bfb\u64cd\u4f5c\u7684\u65f6\u5019\uff0c\u4f1a\u5148\u5230\u7f13\u5b58\u4e2d\u67e5\u8be2\u6570\u636e\uff0c\u5982\u679c\u6ca1\u6709\u547d\u4e2d\u7684\u8bdd\u5c31\u5230\u6570\u636e\u5e93\u4e2d\u67e5\u8be2\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u5199\u64cd\u4f5c\u7684\u65f6\u5019\uff0c\u4f1a\u91c7\u7528\u5ef6\u8fdf\u53cc\u5220\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u95ee\uff1a\u5728\u5ef6\u8fdf\u53cc\u5220\u4e2d\u4e3a\u4ec0\u4e48\u8981\u5ef6\u8fdf\u5220\u9664\u7f13\u5b58\uff1f<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u6570\u636e\u5e93\u91c7\u7528\u7684\u662f\u4e3b\u4ece\u6a21\u5f0f\uff0c\u9075\u5faa\u8bfb\u5199\u5206\u79bb\uff0c\u9700\u8981\u4e00\u4e9b\u65f6\u95f4\u6765\u5c06\u4e3b\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u540c\u6b65\u5230\u4ece\u6570\u636e\u5e93\uff0c\u4f46\u662f\u8fd8\u662f\u53ef\u80fd\u51fa\u73b0\u810f\u8bfb\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u95ee\uff1a\u5728\u5ef6\u8fdf\u53cc\u5220\u4e2d\u4e3a\u4ec0\u4e48\u8981\u5220\u9664\u4e24\u6b21\u7f13\u5b58\u5462?<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u53ea\u6709\u4e00\u6b21\u5220\u9664\u7f13\u5b58\u64cd\u4f5c\u7684\u8bdd\u5c31\u4f1a\u6709\u4e24\u79cd\u60c5\u51b5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u60c5\u51b51\uff1a\u5148\u5220\u9664\u7f13\u5b58\uff0c\u518d\u4fee\u6539\u6570\u636e\u5e93\u3002\u7ebf\u7a0b1\u5220\u9664\u7f13\u5b58\u3002\u5728\u7ebf\u7a0b1\u8981\u4fee\u6539\u6570\u636e\u5e93\u524d\u3002\u7ebf\u7a0b2\u53bb\u505a\u67e5\u8be2\u64cd\u4f5c\uff0c\u53d1\u73b0\u6ca1\u6709\u7f13\u5b58\uff0c\u5c31\u53bb\u6570\u636e\u5e93\u4e2d\u67e5\u8be2\u6570\u636e\u5e76\u505a\u7f13\u5b58\uff0c\u4e4b\u540e\u7ebf\u7a0b1\u4fee\u6539\u4e86\u6570\u636e\u5e93\u4e2d\u7684\u4fe1\u606f\uff0c\u6700\u7ec8\u51fa\u73b0\u7f13\u5b58\u6570\u636e\u548c\u6570\u636e\u5e93\u6570\u636e\u4e0d\u76f8\u540c\u7684\u60c5\u51b5\u3002\uff08\u5f53\u524d\u7ebf\u7a0b\u5728\u5220\u9664\u7f13\u5b58\u5e76\u4e14\u5728\u5199\u6570\u636e\u5e93\u524d\u5176\u4ed6\u7ebf\u7a0b\u67e5\u8be2\u4e86\u5c31\u7684\u6570\u636e\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\e131ec0b5525ad781c89c20e162a6876.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\e131ec0b5525ad781c89c20e162a6876.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"693bbd6d70eb420a98936a47ca6f22a5.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u60c5\u51b52\uff1a\u5148\u4fee\u6539\u6570\u636e\uff0c\u518d\u5220\u9664\u7f13\u5b58\u3002\u5f53\u524d\u7f13\u5b58\u4e2d\u65b9\u6ca1\u6709\u6570\u636e\uff0c\u7ebf\u7a0b1\u505a\u67e5\u8be2\u64cd\u4f5c\uff0c\u51c6\u5907\u5c06\u65e7\u6570\u636e\u7f13\u5b58\u524d\uff0c\u7ebf\u7a0b2\u505a\u4e86\u4fee\u6539\u6570\u636e\u548c\u5220\u9664\u7f13\u5b58\u7684\u64cd\u4f5c(\u6b64\u65f6\u662f\u6ca1\u6709\u7f13\u5b58\u7684)\uff0c\u6700\u7ec8\u7f13\u5b58\u4e2d\u5c31\u5b58\u50a8\u4e86\u65e7\u7684\u6570\u636e\uff0c\u51fa\u73b0\u810f\u8bfb\u7684\u60c5\u51b5\u3002\uff08\u5f53\u524d\u7ebf\u7a0b\u8981\u5c06\u65e7\u7684\u6570\u636e\u8fdb\u884c\u7f13\u5b58\u7684\u8fc7\u7a0b\u4e2d\u8fdb\u884c\u4e86\u5199\u6570\u636e\u5e93\u548c\u5220\u9664\u7f13\u5b58\u7684\u64cd\u4f5c\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\1b76e15f0600e1785ea8f11ffa752e0c.png'><img class=\"lazyload 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class=\"wp-block-heading\"><strong>\u95ee\uff1a\u5ef6\u8fdf\u53cc\u5220\u662f\u6ca1\u6cd5\u4fdd\u8bc1\u5f3a\u4e00\u81f4\u6027\u7684\uff0c\u6709\u4ec0\u4e48\u5f3a\u4e00\u81f4\u6027\u7684\u65b9\u6cd5\u5417\uff1f<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528\u5206\u5e03\u5f0f\u9501\uff0c\u6bcf\u6b21\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u8fdb\u884c\u64cd\u4f5c\uff0c\u6548\u7387\u6bd4\u8f83\u4f4e\u4e0b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\be3a4bbb453507846410c6f7f67c49ca.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\be3a4bbb453507846410c6f7f67c49ca.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"ba2085dde6604859a7bbb375c70ded99.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u65b9\u6cd5\u4e8c\uff1a\u56e0\u4e3a\u7f13\u5b58\u4e2d\u7684\u6570\u636e\u5927\u591a\u662f\u8bfb\u591a\u5199\u5c11\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5728\u8bfb\u53d6\u6570\u636e\u7684\u65f6\u5019\u4f7f\u7528\u5171\u4eab\u9501\uff0c \u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u53ef\u4ee5\u8bfb\u53d6\u7f13\u5b58\u4f46\u662f\u5176\u4ed6\u7ebf\u7a0b\u4e0d\u53ef\u4ee5\u5199\uff0c\u5728\u4fee\u6539\u6570\u636e\u7684\u65f6\u5019\u4f7f\u7528\u6392\u4ed6\u9501\uff0c\u4f1a\u963b\u585e\u5176\u4ed6\u7ebf\u7a0b\u7684\u8bfb\u5199\u64cd\u4f5c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\afcba2cc06ea80503f2ecc4902041cb6.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\afcba2cc06ea80503f2ecc4902041cb6.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"541579dc2ee34fc0ba716a1f2d2c707b.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6392\u4ed6\u9501\u548c\u5171\u4eab\u9501\u53ef\u4ee5\u4f7f\u7528redisson\u5b9e\u73b0\uff0c\u901a\u8fc7redissonClient\u83b7\u53d6\u5bf9\u5e94\u7684\u8bfb\u5199\u9501\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u8bfb\u9501\u4e5f\u5c31\u662f\u5171\u4eab\u9501\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\8312fa840d24849d4afde095d569cb66.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\8312fa840d24849d4afde095d569cb66.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"edc516479ef34213be8d1f04c0a7a866.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5199\u9501\u4e5f\u5c31\u662f\u6392\u4ed6\u9501\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\05e26fe5fa0bdac45b7315343944c4c4.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\05e26fe5fa0bdac45b7315343944c4c4.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"ebc5db7353b544bdb5de54f8a83ddbd5.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5fc5\u987b\u4fdd\u8bc1\u8bfb\u5199\u9501\u7684\u540d\u5b57\u76f8\u540c\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u95ee\uff1a\u90a3\u6709\u4e86\u89e3\u8fc7\u6700\u7ec8\u4e00\u81f4\u6027\u7684\u65b9\u6cd5\u5417\uff1f<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6211\u4eec\u652f\u4ed8\u6a21\u5757\u4e2d\uff0c\u6bcf\u6b21\u652f\u4ed8\u90fd\u9700\u8981\u83b7\u53d6\u652f\u4ed8\u6a21\u677f\u4e5f\u5c31\u662f\u652f\u4ed8\u5b9d\u652f\u4ed8\u548c\u5fae\u4fe1\u652f\u4ed8\u6a21\u677f\uff0c\u8fd9\u4e9b\u6570\u636e\u6211\u4eec\u57fa\u672c\u4e0a\u4e0d\u4f1a\u4fee\u6539\uff0c\u4f1a\u5c06\u5176\u7f13\u5b58\u8d77\u6765\uff0c\u5728\u4fee\u6539mysql\u4e2d\u6a21\u677f\u7684\u6570\u636e\u7684\u65f6\u5019\uff0c\u901a\u8fc7rabbitmq\u53d1\u9001\u6d88\u606f\uff0c\u5f02\u6b65\u4fee\u6539\u7f13\u5b58\u7684\u6570\u636e\uff0c\u8fbe\u5230\u6700\u7ec8\u4e00\u81f4\u7684\u6548\u679c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3a\u4ec0\u4e48mq\u53ef\u4ee5\u5b9e\u73b0\u6700\u7ec8\u4e00\u81f4\u7684\u6548\u679c\u5462\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">mq\u4e2d\u7684\u6d88\u606f\u90fd\u662f\u6309\u7167\u987a\u5e8f\u8fdb\u884c\u6d88\u8d39\u7684\uff0c\u6d88\u606f\u7684\u6d88\u8d39\u662f\u548c\u4e8b\u52a1\u7ed1\u5b9a\u7684\uff0c\u5982\u679c\u4e8b\u52a1\u8fdb\u884c\u4e86\u56de\u6eda\u64cd\u4f5c\u5219\u88ab\u6d88\u8d39\u7684\u6d88\u606f\u4e5f\u4f1a\u88ab\u91cd\u65b0\u653e\u56de\u961f\u5217\u7684\u539f\u5148\u4f4d\u7f6e\u4e2d\uff0c\u5e76\u4e14\u63a5\u6536\u5230\u6d88\u606f\u7684\u670d\u52a1\u4f1a\u5f02\u6b65\u8fdb\u884c\u5904\u7406\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\eec678ed40547f2575808d0ecc7066fb.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\eec678ed40547f2575808d0ecc7066fb.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"28a04c5862c84335bd860660c0e7686e.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u7136\u6211\u4eec\u4e0d\u4ec5\u4ec5\u53ef\u4ee5\u4f7f\u7528rabbitmq\u5b9e\u73b0\u6700\u7ec8\u4e00\u81f4\u7684\u6548\u679c\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528canal\u5b9e\u73b0\u6700\u7ec8\u4e00\u81f4\u7684\u6548\u679c\u3002canal\u4e3b\u8981\u662f\u901a\u8fc7mysql\u7684\u4e3b\u4ece\u540c\u6b65\u5b9e\u73b0\u7684\u3002\u901a\u8fc7\u76d1\u542cbin Log\u65e5\u5fd7\u7684\u65b9\u5f0f\u6765\u4fee\u6539\u7f13\u5b58\u4e2d\u7684\u4fe1\u606f\uff0c\u8fbe\u5230\u6700\u7ec8\u4e00\u81f4\u7684\u6548\u679c\u3002\uff08binLog\u65e5\u5fd7\u4e3b\u8981\u662f\u50a8\u5b58DDL(\u6570\u636e\u5b9a\u4e49\u8bed\u53e5)\u548cDML(\u6570\u636e\u64cd\u7eb5\u8bed\u53e5)\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\731149b3eed725c42d4e11801ed3d77a.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\731149b3eed725c42d4e11801ed3d77a.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"ac1d3f9e587d456dbee262d98f3bd09c.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u95ee\uff1aredis\u505a\u4e3a\u7f13\u5b58\uff0c\u6570\u636e\u7684\u6301\u4e45\u5316\u662f\u600e\u4e48\u505a\u7684\u5462\uff1f<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6301\u4e45\u5316\u4e0a\u7528 RDB\u548cAOF\u4e24\u79cd\u65b9\u5f0f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee:\u8bf4\u8bf4\u4f60\u5bf9RDB\u548cAOF\u7684\u7406\u89e3\u5427\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.RDB\uff1a\u901a\u8fc7\u5bf9\u6570\u636e\u505a\u5feb\u7167\u7684\u65b9\u5f0f\u505a\u6301\u4e45\u5316\uff0c\u5c06\u5feb\u7167\u5b58\u653e\u5230\u78c1\u76d8\u4e0a\uff0c\u540e\u7eed\u9700\u8981\u6062\u590d\u6570\u636e\u7684\u65f6\u95f4\u5c31\u4f7f\u7528\u8be5\u5feb\u7167\u8fdb\u884c\u6062\u590d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">RDB\u7684\u6267\u884c\u539f\u7406\uff1a\u5728\u4e3b\u8fdb\u7a0b\u4f1a\u6709\u4e00\u4e2a\u9875\u8868\u6587\u4ef6(\u7528\u4e8e\u6620\u5c04\u6570\u636e\u5728\u7269\u7406\u5185\u5b58\u4e0a\u7684\u6570\u636e)\uff0c\u901a\u8fc7\u590d\u5236\u8be5\u9875\u8868\u5230\u5b50\u8fdb\u7a0b\u4e2d\uff0c\u5b50\u8fdb\u7a0b\u901a\u8fc7\u9875\u8868\u627e\u5230\u6570\u636e\u5e76\u505a\u5feb\u7167\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u662f\u5982\u679c\u5728\u4fee\u6539\u6570\u636e\u7684\u8fc7\u7a0b\u4e2d\u505aRDB\u5c31\u4f1a\u51fa\u73b0\u810f\u8bfb\u7684\u60c5\u51b5\uff0cRDB\u901a\u8fc7\u8bbe\u7f6e\u6570\u636e\u4e3a\u53ea\u8bfb\uff0c\u5728\u4fee\u6539\u6570\u636e\u7684\u65f6\u5019\u590d\u5236\u4e00\u4efd\u76f8\u540c\u7684\u6570\u636e\u8fdb\u884c\u4fee\u6539\u5982\u4f55\u4fee\u6539\u9875\u8868\u7684\u6620\u5c04\uff0c\u6700\u7ec8\u89e3\u51b3\u810f\u8bfb\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\8fffd7bbfa570409d95a873d6cf14ede.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\8fffd7bbfa570409d95a873d6cf14ede.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"e94e014ae1274110a34c633995e71827.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2.AOF\uff1a\u5728redis\u505a\u64cd\u5199\u7684\u6307\u4ee4\u7684\u65f6\u5019\uff0c\u4f1a\u5c06\u8fd9\u4e9b\u6307\u4ee4\u90fd\u5b58\u50a8\u5230\u5bf9\u5e94\u7684AOF\u6587\u4ef6\u4e2d\uff0c\u5728\u540e\u7eed\u6570\u636e\u9700\u8981\u6062\u590d\u7684\u65f6\u5019\u5c31\u6267\u884cAOF\u6587\u4ef6\u4e2d\u7684\u6240\u6709\u6307\u4ee4\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">AOF\u6267\u884c\u7684\u539f\u7406\uff1a\u5c31\u662f\u6bcf\u6b21\u53bb\u8bb0\u5f55\u64cd\u4f5c\u5199\u7684\u6307\u4ee4\u5230AOF\u6587\u4ef6\u4e2d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1aRDB\u548cAOF\u6709\u4ec0\u4e48\u533a\u522b\u5417?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.RDB\u662f\u5bf9\u6574\u4e2a\u5185\u5b58\u505a\u5feb\u7167\uff0c\u800cAOF\u662f\u8bb0\u5f55redis\u6bcf\u4e00\u6761\u6267\u884c\u7684\u8bed\u53e5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.RDB\u7684\u5728\u4e24\u6b21\u5907\u4efd\u95f4\u53ef\u80fd\u4f1a\u51fa\u73b0\u6570\u636e\u4e22\u5931\u7684\u60c5\u51b5(redis\u5b95\u673a)\u5b8c\u6574\u6027\u4f4e\uff0c \u800cAOF\u7684\u5b8c\u6574\u6027\u6bd4\u8f83\u9ad8\uff0c\u5176\u53d6\u51b3\u53bb\u5237\u76d8\u7684\u7b56\u7565\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.RDB\u7684\u6587\u4ef6\u6bd4\u8f83\u5c0f\uff0c\u800cAOF\u4f1a\u8bb0\u5f55\u6bcf\u65e5\u4e00\u6761\u6307\u4ee4\uff0c\u6240\u4ee5AOF\u7684\u6587\u4ef6\u6bd4\u8f83\u5927\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.RDB\u7684\u6570\u636e\u6062\u590d\u6bd4\u8f83\u5feb\uff0c\u56e0\u4e3aAOF\u6587\u4ef6\u6bd4\u8f83\u5927\uff0c\u9700\u8981\u4e00\u6761\u6761\u7684\u6267\u884c\u6307\u4ee4\uff0c\u6062\u590d\u901f\u5ea6\u6162\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5.RDB\u7cfb\u7edf\u5360\u7528\u9ad8\uff0c\u9700\u8981\u5927\u91cf\u7684CPU\u548c\u5185\u5b58\u7684\u6d88\u8017\uff0c\u800cAOF\u7cfb\u7edf\u5360\u7528\u6bd4\u8f83\u5c0f\uff0c\u53ea\u8981\u662f\u6587\u4ef6\u7684IO\u64cd\u4f5c\uff0c\u4f46\u662f\u5728AOF\u6587\u4ef6\u91cd\u5199\u7684\u65f6\u5019\u9700\u8981\u5927\u91cf\u7684CPU\u548c\u5185\u5b58\u7684\u6d88\u8017\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1aRDB\u548cAOF\u8c01\u7684\u6062\u590d\u901f\u5ea6\u66f4\u5feb\uff0c\u6211\u4eec\u5728\u5e73\u65f6\u8981\u600e\u4e48\u9009\u62e9\u5462?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">RDB\u7684\u5feb\u7167\u6587\u4ef6\u672c\u8d28\u662f\u4e8c\u8fdb\u5236\u6587\u4ef6\uff0c\u5176\u4f53\u79ef\u6bd4\u8f83\u5c0f\uff0c\u800cAOF\u6587\u4ef6\u9700\u8981\u4fdd\u5b58redis\u4e2d\u7684\u5199\u64cd\u4f5c\u6307\u4ee4\uff0c\u5728\u4f53\u79ef\u4e0a\u6bd4\u8f83\u5927\uff0c\u6240\u4ee5\u5728\u6062\u590d\u901f\u5ea6\u4e0aRDb\u6bd4\u8f83\u5feb\uff0c\u4f46\u662fRDB\u5b58\u5728\u6570\u636e\u4e22\u5931\u7684\u98ce\u9669\uff0c\u5728\u6211\u7684\u9879\u76ee\u4e2d\u53ea\u8981\u4e3b\u8981\u8fd8\u662f\u4f7f\u7528AOF\uff0c\u50cf\u652f\u4ed8\u65b9\u5f0f\u6a21\u677f\u8fd9\u79cd\u6bd4\u8f83\u91cd\u8981\u7684\u6570\u636e\uff0c\u6211\u4eec\u5e94\u5f53\u964d\u4f4e\u5176\u4e22\u5931\u7684\u98ce\u9669\uff0c\u5728\u5237\u76d8\u7b56\u7565\u4e0a\u4f7f\u7528\u6bcf\u79d2\u8fdb\u884c\u4e00\u6b21\u5237\u76d8\uff0c\u4e5f\u5c31\u662f\u6bcf\u79d2\u6279\u91cf\u5199\u5165\u4e00\u6b21\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aredis\u7684key\u8fc7\u671f\u540e\uff0c\u4f1a\u7acb\u523b\u505a\u5220\u9664\u64cd\u4f5c\u5417?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">redis\u6709\u4e24\u79cd\u6570\u636e\u8fc7\u671f\u7b56\u7565\uff0c\u5206\u522b\u662f\u60f0\u6027\u5220\u9664\u548c\u5b9a\u671f\u5220\u9664\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u60f0\u6027\u5220\u9664\uff1a\u6211\u4eec\u4f1a\u4e3a\u6bcf\u4e2akey\u8bbe\u7f6e\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\uff0c\u5728\u6bcf\u6b21\u83b7\u53d6\u6570\u636e\u7684\u65f6\u5019\u4f1a\u5148\u53bb\u5224\u65ad\u8be5key\u662f\u5426\u8fc7\u671f\uff0c\u5982\u679c\u8fc7\u671f\u76f4\u63a5\u5220\u9664key\uff0c\u5982\u679c\u6ca1\u6709\u8fc7\u671f\u5219\u76f4\u63a5\u8fd4\u56de\uff0c\u4e5f\u5c31\u662f\u8bf4\u5728\u6ca1\u6709\u4f7f\u7528\u6570\u636e\u65f6\u4e0d\u4f1a\u4e3b\u52a8\u5220\u9664\u3002\uff08\u4f18\u70b9\uff1a\u5bf9CPU\u53cb\u597d\uff0c\u53ea\u5728\u67e5\u8be2\u65f6\u624d\u505a\u8fc7\u671f\u5224\u65ad\u3002\u7f3a\u70b9\uff1a\u5185\u5b58\u6d88\u8017\u5927\u3002\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9a\u671f\u5220\u9664\uff1a\u5b9a\u671f\u53bb\u5224\u65ad\u4e00\u5b9a\u6570\u91cf\u7684key\u662f\u5426\u8fc7\u671f\uff0c\u5982\u679c\u8fc7\u671f\u5219\u76f4\u63a5\u8fdb\u884c\u5220\u9664\u64cd\u4f5c\uff0c\u5b9a\u671f\u5220\u9664\u53c8\u5206\u4e3aSLOW\u6a21\u5f0f\u548cFAST\u6a21\u5f0f\u3002\uff08\u4f18\u70b9\uff1a\u5185\u5b58\u6d88\u8017\u5c0f\u3002\u7f3a\u70b9\uff1a\u5b9a\u671f\u67e5\u8be2key\u9700\u8981\u6d88\u8017\u5927\u91cf\u65f6\u95f4\u3002\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SLOW\u6a21\u5f0f\uff1a\u9ed8\u8ba4\u7684\u9891\u7387\u4e3a10hz\uff08\u4e00\u79d2\u5185\u8fdb\u884c\u5341\u6b21\uff09\uff0c\u6bcf\u6b21\u4e0d\u5927\u4e8e25ms\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u6587\u4ef6\u4e2d\u7684hz\u4fee\u6539\u9891\u7387\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">FAST\u6a21\u5f0f\uff1a\u6267\u884c\u9891\u7387\u662f\u4e0d\u56fa\u5b9a\u7684\uff0c\u4e24\u6b21\u5220\u9664\u7684\u95f4\u9694\u4e0d\u5c0f\u4e8e2ms\uff0c\u6bcf\u6b21\u8017\u65f6\u5c0f\u4e8e1ms\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">redis\u9ed8\u8ba4\u91c7\u7528\u7684\u6570\u636e\u8fc7\u671f\u5220\u9664\u7b56\u7565\uff1a\u60f0\u6027\u5220\u9664+\u5b9a\u671f\u5220\u9664\u914d\u5408\u4f7f\u7528\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u5047\u5982\u7f13\u5b58\u8fc7\u591a\uff0c\u5185\u5b58\u6709\u9650\uff0c\u5185\u5b58\u6ee1\u4e86\u600e\u4e48\u529e\u5462?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728redis\u4e2d\u63d0\u4f9b\u4e86\u516b\u79cd\u6570\u636e\u6dd8\u6c70\u7684\u7b56\u7565\uff0c\u90a3\u9ed8\u8ba4\u7684\u5904\u7406\u5c31\u662fnoeviction\uff0c\u5c31\u662f\u76f4\u63a5\u62a5\u9519\u3002\u6211\u4eec\u53ef\u4ee5\u63d0\u4f9b\u914d\u7f6e\u6587\u4ef6\u4fee\u6539\u5bf9\u5e94\u7684\u6dd8\u6c70\u7b56\u7565\u3002\u7b56\u7565\u4e2d\u6709\u4e24\u79cd\u91cd\u8981\u7684\u601d\u60f3\uff0c\u5206\u522b\u662fLRU\u548cLFU\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">LRU:\u5c31\u662f\u5c06\u5f53\u524d\u4f7f\u7528\u95f4\u8ddd\u6700\u957f\u7684\u6570\u636e\u8fdb\u884c\u6dd8\u6c70\u3002\uff08\u5bf9\u5e94\u4e24\u4e2a\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">LFU:\u5c31\u662f\u5c06\u5f53\u524d\u4f7f\u7528\u9891\u7387\u6700\u5c11\u7684\u6570\u636e\u8fdb\u884c\u6dd8\u6c70\u3002\uff08\u5bf9\u5e94\u4e24\u4e2a\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u968f\u673a\u6dd8\u6c70\u7b56\u7565\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u516b\u4e2a\u7b56\u7565\u7684\u4e0d\u540c\u5c31\u5728\u4e8ekey\u7684\u7c7b\u578b(\u5168\u90e8key\u548c\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u7684key)\u548c\u4f7f\u7528\u7684\u601d\u60f3\u4e0d\u540c(LRU\u548cLFU)\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6211\u7684\u9879\u76ee\u4e2d\u4e3b\u8981\u4f7f\u7528\u7684\u6dd8\u6c70\u7b56\u7565\u5c31\u662f: allkey-lru,\u6dd8\u6c70\u6389\u5f53\u524d\u4f7f\u7528\u6700\u5c11\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u6570\u636e\u5e93\u4e2d\u6709100w\u6761\u6570\u636e\uff0credis\u53ea\u80fd\u5b58\u50a820w\u6570\u636e\uff0c\u5982\u4f55\u4fdd\u8bc1redis\u4e2d\u7684\u6570\u636e\u662f\u70ed\u70b9\u6570\u636e\u5462?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528 allkey-lru\u7b56\u7565\uff0c\u4fdd\u8bc1\u7ecf\u5e38\u4f7f\u7528\u7684\u6570\u636e\u4e0d\u88ab\u6dd8\u6c70\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1aredis\u7f13\u5b58\u7684\u7a7a\u95f4\u7528\u5b8c\u4e86\u4f1a\u600e\u4e48\u6837\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u662f\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u7684\u8bdd\uff0c\u4f1a\u76f4\u63a5\u62a5\u9519\uff0c\u56e0\u4e3a\u9ed8\u8ba4\u7684\u6dd8\u6c70\u7b56\u7565\u5c31\u662fnoeviction\uff0c\u5982\u679c\u8bbe\u7f6e\u4e86\u5176\u4ed6\u7684\u7b56\u7565\u5219\u4f1a\u5bf9\u6570\u636e\u8fdb\u884c\u6dd8\u6c70\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u80fd\u4ecb\u7ecd\u4e00\u4e0bredis\u7684\u4e3b\u4ece\u590d\u5236\u548c\u4e3b\u4ece\u590d\u5236\u7684\u6d41\u7a0b\u5417?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5355\u4e2aredis\u8282\u70b9\u7684\u5e76\u53d1\u80fd\u529b\u662f\u6709\u9650\u7684\uff0c\u6240\u4ee5\u4e3a\u4e86\u63d0\u9ad8\u5e76\u53d1\u80fd\u529b\uff0c\u6211\u4eec\u9700\u8981\u642d\u5efaredis\u96c6\u7fa4\uff0c\u5c31\u6bd4\u5982\uff1a\u4e3b\u4ece\u590d\u5236\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4e3b\u4ece\u590d\u5236\u7684\u6d41\u7a0b<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3b\u4ece\u590d\u5236\u4e3b\u8981\u5206\u4e3a\uff1a\u5168\u91cf\u540c\u6b65\u548c\u589e\u91cf\u540c\u6b65\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5168\u91cf\u540c\u6b65\uff1a\u5728salve\u8bf7\u6c42\u6570\u636e\u540c\u6b65\u7684\u65f6\u5019\u4f1a\u643a\u5e26application Id\u548coffset\uff0c\u5982\u679cmaster\u5224\u65ad\u51faapplid\u548c\u81ea\u5df1\u7684\u4e0d\u4e00\u6837\uff0c\u5c31\u8ba4\u4e3aslave\u662f\u7b2c\u4e00\u6b21\u8fdb\u884c\u540c\u6b65\uff0c\u6240\u4ee5\u4f1a\u8fdb\u884c\u5168\u91cf\u540c\u6b65\u3002 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src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"cef45a6efbcb464d88e95e32b99c13f7.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u589e\u91cf\u540c\u6b65\uff1a \u5728master\u5224\u65ad\u51faslave\u4e2d\u7684applid\u548c\u81ea\u5df1\u4e00\u6837\u5c31\u8ba4\u4e3a\u4e0d\u662f\u7b2c\u4e00\u6b21\u540c\u6b65\uff0c\u76f4\u63a5\u8fdb\u884c\u589e\u91cf\u540c\u6b65\uff0c\u4ece\u65e5\u5fd7\u6587\u4ef6\u4e2d\u83b7\u53d6\u5230offset\u7684\u4f4d\u7f6e\uff0c\u5c06offset\u4e4b\u540e\u7684\u6570\u636e\u53d1\u9001\u7ed9slave\uff0c\u8fdb\u884c\u6570\u636e\u7684\u540c\u6b65\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u90a3\u4e3b\u8282\u70b9\u5b95\u673a\u4e86\u53c8\u8be5\u600e\u4e48\u529e\u5462\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3a\u4e86\u63d0\u9ad8redis\u96c6\u7fa4\u7684\u9ad8\u53ef\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u54e8\u5175\u6a21\u5f0f\uff0c\u89e3\u51b3\u4e3b\u8282\u70b9\u5b95\u673a\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u90a3\u8bf4\u8bf4\u4f60\u5bf9\u54e8\u5175\u6a21\u5f0f\u7684\u7406\u89e3\u5427<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u54e8\u5175\u6a21\u5f0f\uff1a\u901a\u8fc7sentinel\u7684\u5fc3\u8df3\u673a\u5236\u53bb\u76d1\u6d4bmaster\u7684\u72b6\u6001\uff0c\u5f53\u7136\u4e3a\u4e86\u4fdd\u8bc1\u9ad8\u53ef\u7528\uff0c\u6211\u4eec\u4e5f\u9700\u8981\u5bf9sentinel\u642d\u5efa\u96c6\u7fa4\u3002sentinel\u6bcf\u96941\u79d2\u5c31\u4f1a\u5411\u96c6\u7fa4\u7684\u8282\u70b9\u53d1\u9001ping\u6307\u4ee4\uff0c\u5f53master\u5931\u6548\u540e\u4f1a\u5c31\u9009\u62e9\u51fa\u65b0\u7684master\u3002<\/p>\n\n\n\n<p 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class=\"wp-block-paragraph\">1.\u5224\u65admaster\u4e0eslave\u65ad\u5f00\u7684\u65f6\u957f\uff0c\u5982\u679c\u65f6\u957f\u8d85\u8fc7\u6307\u6307\u5b9a\u503c\u5219\u76f4\u63a5\u6392\u9664\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5224\u65adslave\u7684\u6743\u91cd\uff0c\u5982\u679c\u6743\u91cd\u8d8a\u5c0f\u4f18\u5148\u7ea7\u5c31\u8d8a\u9ad8\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u5982\u679c\u6743\u91cd\u76f8\u540c\u7684\u8bdd\uff0c\u5c31\u6bd4\u8f83slave\u7684offst\u503c\u4e5f\u5c31\u662f\u504f\u79fb\u91cf\uff0c\u5982\u679coffset\u8d8a\u5927\u4f18\u5148\u7ea7\u5c31\u8d8a\u9ad8\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u5224\u65adslave\u8fd0\u884cid\u7684\u5927\u5c0f\uff0c\u5982\u679c\u8fd0\u884cid\u8d8a\u5c0f\u5219\u4f18\u5148\u7ea7\u8d8a\u9ad8\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u54e8\u5175\u6a21\u5f0f\u53ef\u80fd\u4f1a\u51fa\u73b0\u8111\u88c2\u7684\u60c5\u51b5\uff0c\u6709\u4e86\u89e3\u8fc7\u5417\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7531\u4e8e\u7f51\u7edc\u4e0d\u7a33\u5b9a\u7684\u56e0\u7d20\uff0c\u591a\u4e2asentinel\u90fd\u6ca1\u6709ping\u5230master\uff0c\u6b64\u65f6master\u662f\u6ca1\u6709\u5b95\u673a\u7684\uff0c\u800c\u54e8\u5175\u6a21\u5f0f\u5c31\u4f1a\u9009\u62e9\u51fa\u65b0\u7684master\uff0c\u5c31\u51fa\u73b0\u4e24\u4e2amaster\u7684\u60c5\u51b5\uff0c\u800c\u5ba2\u6237\u8fd8\u662f\u5bf9\u65e7\u7684master\u8fdb\u884c\u6570\u636e\u7684\u64cd\u4f5c\uff0c\u5728\u7f51\u7edc\u7a33\u5b9a\u540e\uff0c\u65e7\u7684master\u5c31\u4f1a\u53d8\u6210\u65b0master\u7684slave\uff0c\u6700\u7ec8\u5bfc\u81f4\u6570\u636e\u64cd\u4f5c\u7684\u4e22\u5931\u3002\u4ece\u800c\u5f62\u6210\u8111\u88c2\u7684\u73b0\u8c61\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u89e3\u51b3\u8111\u88c2\u7684\u65b9\u6848\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5728redis\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u8bbe\u7f6e\u6700\u5c11\u7684slave\u4e2a\u6570\uff08\u5bf9\u5e94\u7684\u914d\u7f6e\u9879:min-replicas-to-write\uff09\u3002\u5f53\u51fa\u73b0\u8111\u88c2\u7684\u60c5\u51b5\u65f6\uff0c\u65e7\u7684master\u4f1a\u76d1\u6d4b\u5230\u6ca1\u6709slave\uff0c\u5c31\u4e0d\u4f1a\u505a\u6570\u636e\u7684\u64cd\u4f5c\u76f4\u63a5\u8fd4\u56de\u9519\u8bef\u4fe1\u606f\uff0c\u9632\u6b62\u6570\u636e\u64cd\u4f5c\u7684\u4e22\u5931\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5728resdis\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u8bbe\u7f6e\u6700\u5927\u6570\u636e\u540c\u6b65\u7684\u5ef6\u8fdf\u65f6\u95f4\u3002\uff08\u5bf9\u5e94\u7684\u914d\u7f6e\u9879:min-replicas-max-lag\uff09\u3002\u5f53\u51fa\u73b0\u8111\u88c2\u7684\u60c5\u51b5\u65f6\u3002\u65e7\u7684master\u5728\u505a\u6570\u636e\u7684\u540c\u6b65\u65f6\u4e00\u76f4\u627e\u4e0d\u5230slave\uff0c\u5f53\u65f6\u95f4\u8d85\u8fc7\u6700\u5927\u7684\u5ef6\u8fdf\u65f6\u95f4\u5c31\u4f1a\u76f4\u63a5\u8fd4\u56de\u9519\u8bef\u4fe1\u606f\uff0c\u9632\u6b62\u6570\u636e\u64cd\u4f5c\u7684\u7684\u4e22\u5931\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u4f60\u4eec\u4f7f\u7528redis\u662f\u5355\u70b9\u8fd8\u662f\u96c6\u7fa4\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u4eec\u7684redis\u4f7f\u7528\u4e3b\u4ece\u6a21\u5f0f\uff08\u4e00\u4e3b\u4e00\u4ece\uff09+ 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class=\"wp-block-paragraph\">3.\u5728\u5206\u7247\u96c6\u7fa4\u4e2d\uff0c\u4e0d\u518d\u901a\u8fc7sentinel\u76d1\u6d4bmaster\u7684\u5065\u5eb7\u72b6\u6001\uff0c\u800c\u662f\u901a\u8fc7master\u4e4b\u95f4ping\u72b6\u6001\uff0c\u5224\u65ad\u5404\u4e2amaster\u7684\u5065\u5eb7\u72b6\u6001\uff0c\u6700\u7ec8\u8fbe\u5230\u54e8\u5175\u6a21\u5f0f\u7684\u6548\u679c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u5ba2\u6237\u7aef\u5728\u8bbf\u95ee\u5bf9\u5e94\u7684\u6570\u636e\u65f6\u4f1a\u8def\u7531\u5230\u5bf9\u5e94\u7684\u8282\u70b9\u4e0a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee:redis\u5206\u96c6\u7fa4\u4e2d\u7684\u6570\u636e\u662f\u5982\u4f55\u5b58\u50a8\u548c\u8bfb\u53d6\u7684\u5462\uff1f<\/strong><br>redis\u5206\u7247\u96c6\u7fa4\u91c7\u7528\u7684\u662f\u54c8\u5e0c\u69fd\u7684\u7ed3\u6784\u5b9e\u73b0\u7684\uff0c\u54c8\u5e0c\u69fd\u603b\u5171\u670916384\u4e2a\u3002master\u8282\u70b9\u7b49\u91cf\u7684\u83b7\u53d6\u54c8\u5e0c\u69fd\u8303\u56f4\u7528\u4e8e\u5b58\u50a8\u6570\u636e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u5b58\u50a8\u6570\u636e\u7684\u65f6\u5019\uff0c\u901a\u8fc7\u6709\u6548\u90e8\u5206\u53d6\u54c8\u5e0c\u69fd\u603b\u6570\u7684\u6a21\u8ba1\u7b97\u51fa\u54c8\u5e0c\u503c\uff08\u8fd9\u91cc\u7684\u6709\u6548\u90e8\u5206\u6307key\u524d\u5927\u62ec\u53f7\u4e2d\u7684\u6709\u6548\u503c\uff08\u5c31\u6bd4\u5982: set {}key 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class=\"wp-block-paragraph\">2.\u91c7\u7528\u5355\u7ebf\u7a0b\uff0c\u907f\u514d\u4e86\u4e0d\u5fc5\u8981\u7684\u4e0a\u4e0b\u6587\u5207\u6362\u53ef\u7ade\u4e89\u6761\u4ef6\uff0c\u591a\u7ebf\u7a0b\u8fd8\u9700\u8981\u8003\u8651\u7ebf\u7a0b\u95ee\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u91c7\u7528\u591a\u8defIO\u590d\u7528\u6a21\u578b\uff0c\u975e\u963b\u585eIO\u6a21\u578b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u8bf4\u8bf4\u5bf9\u963b\u585eIO\u548c\u975e\u963b\u585eIO\u7684\u7406\u89e3\u5427\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u4eec\u5148\u9700\u8981\u77e5\u9053\u5185\u5b58\u7684\u4f7f\u7528\u60c5\u51b5\u4e3a\uff1a\u7528\u6237\u7a7a\u95f4\u548c\u5185\u6838\u7a7a\u95f4\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7528\u6237\u7a7a\u95f4\uff1a\u53ea\u80fd\u6267\u884c\u53d7\u9650\u5236\u7684\u6307\u4ee4\uff0c\u4e0d\u80fd\u76f4\u63a5\u8c03\u7528\u7cfb\u7edf\u8d44\u6e90\uff0c\u9700\u8981\u901a\u8fc7\u5185\u6838\u63d0\u4f9b\u7684\u63a5\u53e3\u6765\u8c03\u7528\u7cfb\u7edf\u8d44\u6e90\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5185\u6838\u7a7a\u95f4\uff1a\u53ef\u4ee5\u6267\u884c\u7279\u6743\u6307\u4ee4\uff0c\u53ef\u4ee5\u76f4\u63a5\u8c03\u7528\u7cfb\u7edf\u8d44\u6e90\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\9874fc0ff1478d3036a66f4a157d2064.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\9874fc0ff1478d3036a66f4a157d2064.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"a61e0b180c96406bb902ab35ebc2571d.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u963b\u585eIO:\u5728\u7528\u6237\u7ebf\u7a0b\u8981\u83b7\u53d6\u5185\u6838\u4e2d\u83b7\u53d6\u6570\u636e\uff0c\u800c\u6b64\u65f6\u5185\u6838\u4e2d\u6ca1\u6709\u6570\u636e\uff0c\u7528\u6237\u7ebf\u7a0b\u5c31\u4f1a\u7b49\u5f85\u4ece\u800c\u5bfc\u81f4\u7528\u6237\u7ebf\u7a0b\u963b\u585e\uff0c\u5f53\u5185\u6838\u4e2d\u6709\u6570\u636e\u540e\uff0c\u6570\u636e\u9700\u8981\u91cd\u5185\u6838\u7f13\u51b2\u533a\u590d\u5236\u5230\u7528\u6237\u7f13\u51b2\u533a\uff0c\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u7528\u6237\u7ebf\u7a0b\u4e5f\u9700\u8981\u7b49\u5f85\u4ece\u800c\u5bfc\u81f4\u7ebf\u7a0b\u5835\u585e\u3002\u5728\u8fd9\u4e24\u4e2a\u9636\u6bb5\u4e2d\u7528\u6237\u7ebf\u7a0b\u90fd\u662f\u5835\u585e\u7684\uff0c\u8fd9\u5c31\u662f\u5835\u585eIO\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\278803f0fbb5c4525df7ebccf7679702.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\278803f0fbb5c4525df7ebccf7679702.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"6f995b4bb1e14a62a9d8bd2c90d88015.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u975e\u5835\u585eIO: \u7528\u6237\u7ebf\u7a0b\u8981\u4ece\u5185\u6838\u4e2d\u83b7\u53d6\u6570\u636e\uff0c\u4f46\u5185\u6838\u4e2d\u6ca1\u6709\u6570\u636e\uff0c\u6b64\u65f6\u5185\u6838\u76f4\u63a5\u8fd4\u56de\u9519\u8bef\u4fe1\u606f\u7ed9\u7528\u6237\u7ebf\u7a0b\uff0c\u53cd\u4e4b\u7ebf\u7a0b\u5835\u585e\uff0c\u7528\u6237\u7ebf\u7a0b\u4f1a\u5faa\u73af\u7684\u8c03\u7528\u5185\u6838\u7684\u65b9\u6cd5\u76f4\u5230\u5185\u6838\u4e2d\u6709\u6570\u636e\uff0c\u5f53\u5185\u6838\u4e2d\u6709\u6570\u636e\u540e\uff0c\u7528\u6237\u7ebf\u7a0b\u5c31\u4f1a\u7b49\u5f85\u5185\u6838\u7f13\u51b2\u533a\u4e2d\u7684\u6570\u636e\u590d\u5236\u5230\u7528\u6237\u7f13\u51b2\u533a\u4e2d\uff0c\u6b64\u65f6\u7528\u6237\u7ebf\u7a0b\u662f\u963b\u585e\u7684\u3002\u5728\u7b2c\u4e00\u9636\u6bb5\u662f\u4e0d\u963b\u585e\u7684\uff0c\u800c\u7b2c\u4e8c\u9636\u6bb5\u662f\u5835\u585e\u7684\uff0c\u8fd9\u5c31\u662f\u975e\u5835\u585eIO\u3002\u6bd4\u963b\u585eIO\u4f18\u5316\u6ca1\u591a\u5c11\uff0c\u800c\u4e14\u5fd9\u7b49\u673a\u5236\u53ef\u80fd\u4f1a\u5bfc\u81f4CPU\u7684\u7a7a\u8f6c\uff0cCUP\u4f7f\u7528\u7387\u66b4\u589e\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\78a8497c2aa1891e83903ff63d84af2a.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\78a8497c2aa1891e83903ff63d84af2a.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"036933ae1f454ea19923aa28a83dd04a.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u89e3\u91ca\u4e00\u4e0b\u4ec0\u4e48\u662f\u591a\u8defIO\u590d\u7528\u6a21\u578b\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5355\u7ebf\u7a0b\u540c\u65f6\u76d1\u542c\u591a\u4e2aSocket\uff08\u64cd\u4f5c\u5ba2\u6237\u7aef\uff09\u7684\u72b6\u6001\uff0c\u67d0\u4e2aSocket\u53ef\u8bfb\u53ef\u5199\u65f6\u5f97\u5230\u901a\u77e5\uff0c\u9632\u6b62\u51fa\u73b0\u5fd9\u7b49\u7684\u60c5\u51b5\uff0c\u63d0\u9ad8CPU\u7684\u5229\u7528\u7387\uff0c\u53ef\u80fd\u540c\u65f6\u5b58\u5728\u591a\u4e2a\u53ef\u7528Socket\uff0c\u901a\u8fc7\u5faa\u73af\u505a\u8bfb\u53d6\u6570\u636e\u7684\u64cd\u4f5c\uff0c\u591a\u8defIO\u590d\u7528\u4e3b\u8981\u901a\u8fc7epoll\u6a21\u5f0f\u5b9e\u73b0\u7684\uff0c\u5c06\u5df2\u5c31\u7eea\u7684socket\u5b58\u5230\u7528\u6237\u7a7a\u95f4\u4e2d\uff0c\u5c31\u4e0d\u9700\u8981\u904d\u5386\u5224\u65adsocket\u662f\u5426\u5c31\u7eea\uff0c\u4ece\u800c\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\6edd0c3fc26082faa65d094aab6ccd33.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\6edd0c3fc26082faa65d094aab6ccd33.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"c46471fa6447407688650e19b550a2cd.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u6709\u4e86\u89e3\u8fc7redis\u7684\u7f51\u7edc\u6a21\u578b\u5417\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7\u591a\u8defIO\u590d\u7528 + \u4e8b\u4ef6\u5904\u7406\u5668\u5b9e\u73b0\u7684\u3002\u4e8b\u4ef6\u5904\u7406\u5668\u4e3b\u8981\u662f\uff1a\u8fde\u63a5\u5e94\u7b54\u5904\u7406\u5668\uff0c\u547d\u4ee4\u56de\u590d\u5904\u7406\u5668\uff0c\u547d\u4ee4\u8bf7\u6c42\u5904\u7406\u5668\u3002\u5728redis6.0\u4e4b\u540e\uff0c\u4f7f\u7528\u591a\u7ebf\u7a0b\u6765\u5904\u7406\u547d\u4ee4\u7684\u56de\u590d\u548c\u547d\u4ee4\u7684\u8bf7\u6c42\u4ece\u800c\u5b9e\u73b0\u9ad8\u6548\u7684\u7f51\u7edc\u8bf7\u6c42\uff0c\u5728\u547d\u4ee4\u6267\u884c\u7684\u65f6\u5019\u4f9d\u65e7\u662f\u5355\u7ebf\u7a0b\uff08\u7ebf\u7a0b\u5b89\u5168\u7684\uff09\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\d786a167be051ce6844dcf71dfb0a04e.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\d786a167be051ce6844dcf71dfb0a04e.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"cf87b5d2f24d4a04854b9ee26819ca4a.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">MySQL\u516b\u80a1\u6587<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aMysql\u7684\u5b58\u50a8\u5f15\u64ce\u6709\u7406\u89e3\u8fc7\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u6bd4\u8f83\u4e86\u89e3\u5c31\u662f Innodb\uff0cmyisam\uff0cMemory\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Innodb\uff1a\u73b0\u5728\u7684mysql\u9ed8\u8ba4\u5b58\u50a8\u5f15\u64ce\u5c31\u662finnodb\uff0c\u4e3b\u8981\u5c31\u662f\u56e0\u4e3a\u5b83\u662f\u552f\u4e00\u4e00\u4e2a\u652f\u6301\u4e8b\u52a1\u7684\u5b58\u50a8\u5f15\u64ce\uff0c\u652f\u6301\u8868\u7ea7\u9501\u548c\u884c\u7ea7\u9501\uff0c\u5176\u7d22\u5f15\u7684\u5e95\u5c42\u7ed3\u6784\u4f7f\u7528\u7684\u662fB+\u6811\uff0c\u5728\u6570\u636e\uff0c\u7d22\u5f15\uff0c\u8868\u7ed3\u6784\u90fd\u5b58\u50a8\u5230.idb\u4e2d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Myisam\uff1a\u5176\u4e0d\u652f\u6301\u4e8b\u52a1\uff0c\u4ec5\u652f\u6301\u8868\u7ea7\u9501\uff0c\u5176\u7d22\u5f15\u7684\u5e95\u5c42\u7ed3\u6784\u4e3aB+\u6811\uff0c\u8868\u7ed3\u6784\u5b58\u50a8\u5230.sdi\u4e2d\uff0c\u7d22\u5f15\u5b58\u50a8\u5230.myi\uff0c\u6570\u636e\u5b58\u50a8\u5230.myd\u4e2d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Memory:\u57fa\u7840\u5185\u5b58\u8fdb\u884c\u5b58\u50a8\u7684\uff0c\u4e3b\u8981\u5c31\u662f\u7528sdi\u5b58\u50a8\u8868\u7ed3\u6784\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u5982\u4f55\u5b9a\u4f4d\u6162\u67e5\u8be2\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6211\u4eec\u7684\u9879\u76ee\u4e2d\uff0c\u5728\u4e0a\u7ebf\u65f6\u4f7f\u7528skywalking\u6765\u5b9a\u4f4d\u6162\u7684\u67e5\u8be2\uff0c\u5982\u679c\u53d1\u73b0\u662f\u67d0\u4e2aSQL\u6267\u884c\u901f\u5ea6\u6162\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u4f7f\u7528skywalking\u7684\u8ffd\u8e2a\u529f\u80fd\uff0c\u6765\u786e\u5b9aSQL\u8bed\u53e5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u800c\u5728\u6d4b\u8bd5\u73af\u5883\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528MySQL\u63d0\u4f9b\u7684\u6162\u65e5\u5fd7\u6765\u786e\u5b9a\u6162\u67e5\u8be2\u7684\u4f4d\u7f6e\u3002mysql\u662f\u9ed8\u8ba4\u6ca1\u6709\u5f00\u542f\u6162\u65e5\u5fd7\u7684\uff0c\u9700\u8981\u901a\u8fc7\u914d\u7f6e\u6587\u4ef6\u5f00\u542f\u5e76\u8bbe\u7f6e\u5feb\u67e5\u8be2\u7684\u6700\u5927\u65f6\u95f4\uff0c\u8d85\u8fc7\u8fd9\u4e2a\u65f6\u95f4\u5c31\u8ba4\u4e3a\u5176\u4e3a\u6162\u67e5\u8be2\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u5728\u6162\u65e5\u5fd7\u4e2d\u627e\u5230\u6162\u67e5\u8be2\u7684sql,\u5728\u6211\u4eec\u7684\u9879\u76ee\u4e2d\u8bbe\u7f6e\u6700\u5927\u7684\u65f6\u95f4\u4e3a2\u79d2\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#\u5f00\u542f\u6162\u65e5\u5fd7\nslow_query_log=1\n#\u8bbe\u7f6e\u5feb\u67e5\u8be2\u7684\u6700\u5927\u65f6\u95f4\nlong_query_time=2<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4e00\u4e2aSQL\u8bed\u53e5\u6267\u884c\u5f88\u6162\uff0c\u5e94\u8be5\u5982\u4f55\u5206\u6790\u5462\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u4eec\u53ef\u4ee5\u501f\u52a9Mysql\u63d0\u4f9b\u7684\u5173\u952e\u503c explain\u6765\u5c55\u793a\u51fa\u67d0\u4e2aSQL\u8bed\u53e5\u7684\u72b6\u6001\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u8be5\u72b6\u6001\u4e2d\u5305\u542b\u5c5e\u6027 key\u548ckey_lenSQL\u4e2d\u4f7f\u7528\u5230\u7684\u7d22\u5f15\uff0c\u5982\u679c\u63d0\u4f9b\u6211\u4eec\u7684\u7d22\u5f15\u51fa\u73b0\u5931\u6548\u7684\u60c5\u51b5\u5c31\u53ef\u4ee5\u4fee\u6539\u548cSQL\u548c\u6dfb\u52a0\u7d22\u5f15\u3002\u5c5e\u6027type\u8868\u793aSQL\u7684\u6027\u80fd\uff0c\u901a\u5e38\u5176\u503c\u4e3aconst\uff0c\u63d0\u4f9btype\u5224\u65ad\u662f\u5426\u5b58\u5728\u5168\u7d22\u5f15\u626b\u63cf\u6216\u5168\u76d8\u626b\u63cf\u3002\u5c5e\u6027extra\u8868\u793a\u5efa\u8bae\u5c5e\u6027\uff0c\u63d0\u4f9b\u8be5\u5c5e\u6027\u5224\u65ad\u662f\u5426\u51fa\u73b0\u56de\u8868\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u6709\u4e86\u89e3\u8fc7\u7d22\u5f15\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u7d22\u5f15\u662f\u5e2e\u52a9Mysql\u9ad8\u6548\u67e5\u8be2\u6570\u636e\u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u7d22\u5f15\u63d0\u9ad8\u68c0\u7d22\u6548\u7387\uff0c\u5927\u5927\u964d\u4f4eIO\u6210\u672c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u901a\u8fc7\u7d22\u5f15\u5217\u5bf9\u6570\u636e\u6392\u5e8f\uff0c\u5927\u5927\u964d\u4f4e\u4e86\u6392\u5e8f\u7684\u6210\u672c\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aB+\u6811\u548cB\u6811\u7684\u533a\u522b\uff1f<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li>B+\u6811\u4f5c\u5c06\u6570\u636e\u5b58\u653e\u5728\u53f6\u5b50\u8282\u70b9\u4e0a\uff0c\u975e\u53f6\u5b50\u8282\u70b9\u5c31\u53ef\u4ee5\u7ec4\u7ec7\u66f4\u5bbd\u7684\u7ed3\u6784\uff0c\u5c31\u4f1a\u53d8\u7684\u66f4\u77ee\u66f4\u80d6\uff0c\u63d0\u9ad8\u67e5\u8be2\u901f\u5ea6\u3002<\/li>\n\n\n\n<li>B+\u6811\u4e2d\u53f6\u5b50\u8282\u70b9\u4f7f\u7528\u53cc\u5411\u94fe\u8868\u8fdb\u884c\u5b58\u50a8\u7684\uff0c\u5e76\u4e14\u6309\u987a\u5e8f\u8fdb\u884c\u5b58\u50a8\u7684\uff0c\u4e0d\u540c\u4e8eB\u6811\uff0c\u67e5\u8be2\u8303\u56f4\u6570\u636e\u7684\u65f6\u5019\u8fdb\u884c\u591a\u6b21\u7684\u4ece\u6839\u8282\u70b9\u8fdb\u884c\u67e5\u8be2\uff0c\u800cB+\u6811\u5728\u67e5\u8be2\u8303\u56f4\u6570\u636e\u7684\u65f6\u5019\u53ea\u9700\u8981\u4ece\u6839\u8282\u70b9\u67e5\u8be2\u4e00\u6b21\u5373\u53ef\u3002\u4e14\u6392\u5e8f\u7684\u6027\u80fd\u66f4\u597d\u3002\uff08B+\u6811\u5728\u505a\u8303\u56f4\u67e5\u8be2\u7684\u65f6\u5019\u53ea\u9700\u8981\u4ece\u6839\u8282\u70b9\u904d\u5386\u4e00\u6b21\uff0c\u4e8cB\u6811\u5219\u9700\u8981\u904d\u5386\u5bf9\u5e94\u6570\u91cf\u7684\u4e2a\u6570\uff09<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4ec0\u4e48\u662f\u805a\u7c07\u7d22\u5f15\u548c\u975e\u805a\u7c07\u7d22\u5f15\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u805a\u7c07\u7d22\u5f15\uff1a\u7d22\u5f15\u7ed3\u6784\u548c\u6570\u636e\u662f\u5b58\u653e\u5728\u4e00\u8d77\u7684\uff0c\u4e5f\u5c31\u662f\u5728B+\u6811\u7684\u53f6\u5b50\u8282\u70b9\u4e2d\u5b58\u653e\u6574\u884c\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u975e\u805a\u7c07\u7d22\u5f15\uff08\u4e5f\u53eb\u4e8c\u7ea7\u7d22\u5f15\uff09\uff1a\u7d22\u5f15\u7ed3\u6784\u548c\u6570\u636e\u4e0d\u662f\u5b58\u653e\u5728\u4e00\u8d77\u7684\uff0c\u4e5f\u5c31\u662f\u5728B+\u6811\u7684\u53f6\u5b50\u8282\u70b9\u4e0a\u5b58\u653e\u5bf9\u5e94\u7684\u4e3b\u952e\u4e14\u662f\u4e0d\u552f\u4e00\u7684\u3002\u6211\u4eec\u4e3a\u5b57\u6bb5\u6dfb\u52a0\u7d22\u5f15\u901a\u5e38\u5c31\u662f\u4e8c\u7ea7\u7d22\u5f15\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u77e5\u9053\u4ec0\u4e48\u662f\u56de\u8868\u64cd\u4f5c\u5417\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7\u4e8c\u7ea7\u7d22\u5f15\u67e5\u5230\u7684\u4e3b\u952e\u518d\u53bb\u805a\u7c07\u7d22\u5f15\u4e2d\u67e5\u8be2\u6570\u636e\u884c\u7684\u8fc7\u7a0b\u5c31\u662f\u56de\u8868\u3002\u800c\u76f4\u63a5\u67e5\u8be2\u805a\u7c07\u7d22\u5f15\u5219\u4e0d\u4f1a\u51fa\u73b0\u56de\u8868\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u6709\u4e86\u8fc7\u8986\u76d6\u7d22\u5f15\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u67e5\u8be2\u6570\u636e\u901a\u8fc7\u7d22\u5f15\u8fdb\u884c\u67e5\u8be2\uff0c\u8fd4\u56de\u5217\u90fd\u53ef\u4ee5\u5728\u7d22\u5f15\u7684\u6570\u636e\u4e2d\u627e\u5230\uff08\u5305\u542b\u5728\u5176\u4e2d\uff09\uff0c\u5c31\u662f\u8986\u76d6\u67e5\u8be2\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528id\u4e3b\u952e\u8fdb\u884c\u67e5\u8be2\u5c31\u662f\u8986\u76d6\u7d22\u5f15\u67e5\u8be2\uff0c\u56e0\u4e3a\u805a\u7c07\u7d22\u5f15\u7684\u6570\u636e\u4e2d\u5305\u542bid\u4e3b\u952e\uff0c\u6027\u80fd\u9ad8\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u505a\u67e5\u8be2\u7684\u65f6\u5019\u5982\u679c\u8fd4\u56de\u5217\u5427\u5168\u90e8\u5b58\u5728\u4e8e\u7d22\u5f15\u4e2d\u5c31\u4f1a\u56de\u8868\u67e5\u8be2\uff0c\u6240\u4ee5\u5c3d\u91cf\u907f\u514d\u4f7f\u7528select *\u3002<br><strong>\u95ee\uff1aMysql\u8d85\u5927\u5206\u9875\u67e5\u8be2\u600e\u4e48\u8fdb\u884c\u4f18\u5316\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mysql\u505alimit\u5206\u9875\u67e5\u8be2\u7684\u65f6\u5019\uff0c\u9700\u8981\u505a\u6392\u5e8f\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u975e\u5e38\u8017\u65f6\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f18\u5316\u65b9\u6848\uff1a\u8986\u76d6\u7d22\u5f15 + \u5b50\u67e5\u8be2\u3002\u5148\u901a\u8fc7\u5b50\u67e5\u8be2\u51fa\u5206\u9875\u6392\u5e8f\u5b8c\u540e\u7684id\u4e3b\u952e\uff0c\u56e0\u4e3a\u662f\u4e3b\u952e\u6240\u4ee5\u4f1a\u76f4\u63a5\u8fdb\u884c\u8986\u76d6\u7d22\u5f15\u67e5\u8be2\u3002\u901a\u8fc7\u5b50\u67e5\u8be2\u7684id\u5173\u8054\u8868\u4e2d\u7684id\u67e5\u8be2\u51fa\u5206\u9875\u540e\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>select * from table t\n(select id from table limit 0 10 order by id) s\nwhere t.id = s.id<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u7d22\u5f15\u7684\u521b\u5efa\u539f\u5219\u6709\u54ea\u4e9b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u6570\u636e\u91cf\u5927\u4e8e\u5341\u4e07\u4e14\u67e5\u8be2\u7684\u9891\u7387\u8868\u8f83\u9ad8\u7684\u8868\u6211\u4eec\u624d\u4f1a\u8003\u8651\u521b\u5efa\u7d22\u5f15\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5982\u679c\u4e00\u4e2a\u8868\u9700\u8981\u6dfb\u52a0\u7d22\u5f15\uff0c\u6211\u4eec\u5e94\u8be5\u9009\u62e9\u4f5c\u4e3a\u67e5\u8be2\u5b57\u6bb5\uff0c\u6392\u5e8f\u5b57\u6bb5\uff0c\u5206\u7ec4\u5b57\u6bb5\u7684\u5b57\u6bb5\u4f5c\u4e3a\u7d22\u5f15\uff0c\u4e14\u5b57\u6bb5\u7684\u533a\u5206\u5ea6\u8981\u9ad8\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u5728\u6dfb\u52a0\u7d22\u5f15\u7684\u65f6\u5019\u90fd\u4f7f\u7528\u590d\u5408\u7d22\u5f15\u6765\u521b\u5efa\uff0c\u5c3d\u91cf\u4f7f\u7528\u8986\u76d6\u67e5\u8be2\uff0c\u964d\u4f4e\u56de\u8868\u7684\u6982\u7387\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u5982\u679c\u9700\u8981\u5bf9\u957f\u5b57\u7b26\u4e32\u6dfb\u52a0\u7d22\u5f15\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u524d\u7f00\u7d22\u5f15\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5.\u63a7\u5236\u7d22\u5f15\u7684\u6570\u91cf\uff0c\u5e76\u4e0d\u662f\u8d8a\u591a\u8d8a\u5feb\uff0c\u5728\u589e\u5220\u6539\u7684\u65f6\u5019\u6211\u4eec\u4e5f\u9700\u8981\u6d88\u8017\u65f6\u95f4\u6765\u7ef4\u62a4\u7d22\u5f15\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4ec0\u4e48\u60c5\u51b5\u4e0b\u7d22\u5f15\u4f1a\u5931\u6548\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u590d\u5408\u7d22\u5f15<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\acb8c2574e9c8bea4deafc8f95061143.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\acb8c2574e9c8bea4deafc8f95061143.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"4d54b18c1b7940adac6ab1df3ff1a86f.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5728\u4f7f\u7528\u590d\u5408\u7d22\u5f15\u7684\u65f6\u5019\u4e0d\u9075\u5faa\u6700\u5de6\u524d\u7f00\u6cd5\u5219\u3002\u5728\u505a\u6761\u4ef6\u67e5\u8be2\u7684\u65f6\u5019\u8df3\u8dc3\u67d0\u4e00\u5217\u5b57\u6bb5\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\529e3950ad2a9b624c605b708ae91c43.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\529e3950ad2a9b624c605b708ae91c43.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"2afc83bbca7f4d97a9d567ed447b7335.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5728\u6761\u4ef6\u67e5\u8be2\u4e2d\u7684\u8303\u56f4\u67e5\u8be2\u7684\u53f3\u904d\u7684\u5217\u4e0d\u80fd\u4f7f\u7528\u7d22\u5f15\uff0c\u4f7f\u7528\u4e5f\u4f1a\u5931\u6548\u3002\uff08\u5982\u679c\u4e09\u4e2a\u90fd\u6709\u6548\u7684\u8bdd key_len\u5e94\u8be5\u4e3a\u516d\u767e\u591a\uff0c\u8bf4\u660e\u6b64\u65f6address\u5b57\u6bb5\u5931\u6548\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\91fda39dc76d2ed2735fb9061126b1cf.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\91fda39dc76d2ed2735fb9061126b1cf.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"6ca70761b5124c3aa234d5d1528fbb3c.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u4e0d\u80fd\u5728\u7d22\u5f15\u5217\u8fdb\u884c\u8fd0\u7b97\u64cd\u4f5c\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\e0594a34ff626a629ccd67affaf24d8c.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\e0594a34ff626a629ccd67affaf24d8c.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"b743f4ab7b2344df839222af85cb1671.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u5728\u6761\u4ef6\u67e5\u8be2\u7684\u65f6\u5019\u5982\u679c\u6ca1\u6709\u52a0\u5355\u5f15\u53f7\u4e5f\u4f1a\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\u3002\uff08\u5c31\u6bd4\u5982\uff1a0\u548c&#8217;0&#8217;\uff0c\u4f1a\u8fdb\u884c\u7c7b\u578b\u8f6c\u6362\uff0c\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5. \u5728\u6a21\u7cca\u67e5\u8be2\u7684\u65f6\u5019\uff0c\u5982\u679c\u5b57\u7b26\u4e32\u4e2d\u662f\u4ee5%\u5f00\u5934\u7684\u5c31\u4f1a\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\u3002\uff08\u5c31\u6bd4\u5982: &#8220;%abc&#8221;\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6211\u9047\u5230\u7684\u968f\u5f71\u5931\u6548\u95ee\u9898\u5c31\u662f\u6ca1\u6709\u9075\u5faa\u6700\u5de6\u524d\u7f00\u539f\u5219\uff0c\u53ea\u8981\u5b9e\u5728\u6d4b\u8bd5\u7684\u65f6\u5019\u901a\u8fc7explain\u67e5\u8be2SQL\u8bed\u53e5\u7684\u6267\u884c\u72b6\u6001\u6765\u5224\u65ad\u7684\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u8c08\u8c08\u4f60\u5bf9SQL\u7684\u4f18\u5316\u7ecf\u9a8c\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u505aSQL\u4f18\u5316\u7684\u65f6\u5019\u4e3b\u8981\u4ece\uff1a\u5efa\u8868\u65f6\uff0c\u4f7f\u7528\u7d22\u5f15\u65f6\uff0csql\u8bed\u53e5\u7f16\u5199\uff0c\u4e3b\u4ece\u590d\u5236\uff0c\u8bfb\u5199\u5206\u79bb\u7684\u65b9\u9762\u8fdb\u884c\u8003\u8651\uff0c\u5f53\u6570\u636e\u91cf\u8fc7\u5927\u7684\u65f6\u5019\u8003\u8651\u4f7f\u7528\u5206\u5e93\u5206\u8868\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u521b\u5efa\u8868\u7684\u65f6\u5019\u4f60\u662f\u600e\u4e48\u4f18\u5316\u7684\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u4eec\u4e3b\u8981\u9075\u5faa\u963f\u91cc\u7684\u5f00\u53d1\u624b\u518c\uff0c\u5c31\u6bd4\u5982\u5728\u4f7f\u7528\u6574\u6570\u7c7b\u578b\u7684\u65f6\u5019\u5c31\u8003\u8651\u4f7f\u7528\uff1atinyInt\uff0cInt\uff0cbigInt\uff0c\u5982\u679c\u662f\u903b\u8f91\u5b57\u6bb5\u5c31\u4f7f\u7528tinyInt\uff0c\u5728\u4f7f\u7528\u5b57\u7b26\u4e32\u662f\u8003\u8651\u4f7f\u7528\uff1achar\uff0cvarchar\uff0ctext\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u90a3\u5728\u4f7f\u7528\u7d22\u5f15\u7684\u65f6\u5019\u5982\u4f55\u8fdb\u884c\u4f18\u5316\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bb2\u51fa\u7d22\u5f15\u5931\u6548\u7684\u4e94\u79cd\u60c5\u51b5\uff0c\u518d\u4f7f\u7528SQL\u7684\u65f6\u5019\u907f\u514d\u4f7f\u7528select *\uff0c\u4f7f\u7528\u8986\u76d6\u7d22\u5f15\u51cf\u5c11\u56de\u8868\u7684\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u4f60\u5e73\u65f6SQL\u8bed\u53e5\u662f\u600e\u4e48\u4f18\u5316\u7684\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">select \u6307\u660e\u5b57\u6bb5\uff0c\u4e0d\u8981\u4f7f\u7528select * from\u9632\u6b62\u56de\u8868\u7684\u64cd\u4f5c\u3002\u5728\u4f7f\u7528\u805a\u5408\u67e5\u8be2\u7684\u65f6\u5019\u5c3d\u91cf\u4f7f\u7528union all\u800c\u4e0d\u662funion\uff0cunion\u4f1a\u591a\u4e00\u6b21\u8fc7\u6ee4\uff0c\u5728\u6548\u7387\u4e0a\u6bd4\u8f83\u4f4e\u3002\u4f7f\u7528inner join \u800c\u4e0d\u4f7f\u7528 left join\/right join\uff0c\u5982\u679c\u5fc5\u987b\u4f7f\u7528\u7684\uff0c\u4e00\u5b9a\u8981\u4ee5\u5c0f\u8868\u4e3a\u9a71\u52a8\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4e8b\u52a1\u7684\u7279\u6027\u662f\u4ec0\u4e48\uff1f\u53ef\u4ee5\u8be6\u7ec6\u8bf4\u4e00\u4e0b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u91cc\u4f60\u53ef\u4ee5\u53d6\u94b1\u7684\u4f8b\u5b50\u6765\u5f15\u5bfc\u6a21\u5f0f\u5b98\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u539f\u5b50\u6027\uff1a\u5728\u4e8b\u52a1\u4e2d\u7684\u8bed\u53e5\u8981\u4e48\u90fd\u6210\u529f\u8981\u4e48\u90fd\u5931\u8d25\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u81f4\u6027\uff1a\u5728\u4e8b\u52a1\u4e2d\u6570\u636e\u7684\u603b\u91cf\u4e0d\u4f1a\u53d8\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6301\u4e45\u6027\uff1a \u63d0\u4ea4\u548c\u4f1a\u6eda\u7684\u6570\u636e\u90fd\u4f1a\u6301\u4e45\u5316\u5230\u6570\u636e\u5e93\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9694\u79bb\u6027\uff1a\u4e8b\u52a1\u4e2d\u95f4\u662f\u662f\u76f8\u4e92\u9694\u79bb\u7684\uff0c\u662f\u4e0d\u4f1a\u76f8\u4e92\u5f71\u54cd\u7684\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u5e76\u53d1\u4e8b\u52a1\u5e26\u6765\u4e86\u54ea\u4e9b\u95ee\u9898\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e76\u53d1\u4e8b\u52a1\u53ef\u80fd\u4f1a\u51fa\u73b0\u4e09\u79cd\u95ee\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u810f\u8bfb\uff1a\u4e8b\u52a11\u8bfb\u53d6\u5230\u4e8b\u52a12\u672a\u63d0\u4ea4\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u4e0d\u53ef\u91cd\u590d\u8bfb\uff1a\u4e8b\u52a12\u5148\u540e\u8bfb\u53d6\u4e8b\u52a11\u4e2d\u7684\u67d0\u5408\u4e2a\u6570\u636e\uff0c\u4e24\u6b21\u7684\u7ed3\u679c\u4e0d\u4e00\u6837\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u5e7b\u8bfb\uff1a\u4e00\u4e2a\u4e8b\u52a1\u5728\u6309\u6761\u4ef6\u67e5\u8be2\u6570\u636e\u65f6\u6ca1\u6709\u67e5\u5230\u6570\u636e\u5417\uff0c\u4f46\u662f\u63d2\u5165\u64cd\u4f5c\u65f6\uff0c\u53c8\u53d1\u73b0\u8be5\u6570\u636e\u5df2\u7ecf\u5b58\u5728\u3002\u56e0\u4e3a\u5176\u4ed6\u4e8b\u52a1\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u63d2\u5165\u6570\u636e\uff08\u9009\u7b54\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u600e\u4e48\u89e3\u51b3\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7\u8bbe\u7f6e\u8fc7\u9694\u79bb\u7ea7\u522b\u6765\u89e3\u51b3\u3002\u9694\u79bb\u7ea7\u522b\u5305\u62ec\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u8bfb\u53d6\u672a\u63d0\u4ea4\uff0c\u65e0\u6cd5\u89e3\u51b3\u5e76\u53d1\u4e8b\u52a1\u5e26\u6765\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u8bfb\u53d6\u5df2\u63d0\u4ea4\uff0c\u53ef\u4ee5\u89e3\u51b3\u810f\u8bfb\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u53ef\u91cd\u590d\u8bfb\uff0c\u53ef\u4ee5\u89e3\u51b3\u810f\u8bfb\uff0c\u4e0d\u53ef\u91cd\u590d\u8bfb\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u4e32\u884c\u5316\uff0c\u4e8b\u52a1\u53ea\u80fd\u4e00\u4e2a\u4e00\u4e2a\u6267\u884c\uff0c\u53ef\u4ee5\u89e3\u51b3\u810f\u8bfb\uff0c\u4e0d\u53ef\u91cd\u590d\u8bfb\uff0c\u5e7b\u8bfb\uff0c\u9694\u79bb\u7ea7\u522b\u6700\u9ad8\uff0c\u6548\u7387\u6700\u4f4e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>MySQL\u9ed8\u8ba4\u7684\u9694\u79bb\u7ea7\u522b\u662f\u4ec0\u4e48\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mysql\u9ed8\u8ba4\u4f7f\u7528\u7684\u9694\u79bb\u7ea7\u522b\u662f\uff1a\u53ef\u91cd\u590d\u8bfb\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aundo log\u548crado log\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">redo log\uff1a\u7528\u4e8e\u8bb0\u5f55\u6570\u636e\u9875\u7684\u7269\u7406\u53d8\u5316\uff0c\u5f53\u670d\u52a1\u5b95\u673a\u7684\u65f6\u5019\u8fdb\u884c\u6570\u636e\u540c\u6b65\u64cd\u4f5c\u3002\u4fdd\u8bc1\u4e86\u4e8b\u52a1\u7684\u6301\u4e45\u6027\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">undo log\uff1a\u8bb0\u5f55\u903b\u8f91\u65e5\u5fd7\uff0c\u5c31\u6bd4\u5982\uff1a\u5f53\u505a\u63d2\u5165\u64cd\u4f5c\u65f6\u4f1a\u5728\u65e5\u5fd7\u4e2d\u8bb0\u5f55\u9006\u5411\u7684\u64cd\u4f5c\u4e5f\u5373\u662f\u5220\u9664\uff0c\u5728\u4e8b\u52a1\u56de\u6eda\u7684\u65f6\u5019\u4f1a\u6267\u884c\u903b\u8f91\u65e5\u5fd7\u4e2d\u7684\u6307\u4ee4\u3002\u4fdd\u8bc1\u4e86\u4e8b\u52a1\u7684\u6301\u4e45\u6027\u548c\u539f\u5b50\u6027\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u9694\u79bb\u7ea7\u522b\u662f\u600e\u4e48\u5b9e\u73b0\u7684\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u6392\u4ed6\u9501+MVCC\u5b9e\u73b0\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u8bf4\u8bf4\u4f60\u5bf9MVCC\u7684\u7406\u89e3\u5427\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\u3002\u7ef4\u62a4\u4e00\u4e2a\u6570\u636e\u7684\u591a\u4e2a\u7248\u672c\uff0c\u4f7f\u5f97\u8bfb\u5199\u64cd\u4f5c\u6ca1\u6709\u51b2\u7a81\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">mvcc\u4e3b\u8981\u6709\u4e09\u4e2a\u91cd\u70b9\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u9690\u85cf\u5b57\u6bb5\uff1atrx_id(\u4e8b\u52a1id)\uff1a\u8bb0\u5f55\u5f53\u524d\u4e8b\u52a1\u7684id\uff0c\u5176\u4e3a\u81ea\u589e\u7684\u3002 roll-pointer\uff1a\u6307\u5411\u4e0a\u4e00\u4e2a\u7248\u672c\u7684\u4e8b\u52a1\u8bb0\u5f55\u5730\u5740\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.undo log\uff1a\u56de\u6eda\u65e5\u5fd7\uff0c\u5b58\u50a8\u8001\u7248\u672c\u7684\u6570\u636e\uff0c\u7248\u672c\u94fe\uff1a\u591a\u4e2a\u540c\u65f6\u4fee\u6539\u67d0\u6761\u8bb0\u5f55\uff0c\u4ea7\u751f\u591a\u7248\u672c\u7684\u6570\u636e\uff0c\u901a\u8fc7rool-pointer\u6307\u9488\u5f62\u6210\u94fe\u8868\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.readview\uff1a\u89e3\u51b3\u4e00\u4e2a\u4e8b\u52a1\u67e5\u8be2\u9009\u62e9\u7248\u672c\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6839\u636ereadView\u7684\u5339\u914d\u89c4\u5219\u548c\u5f53\u524d\u4e8b\u52a1id\u627e\u5230\u5bf9\u5e94\u7684\u7248\u672c\u4fe1\u606f\u3002\uff08\u95ee\u89c4\u5219\u65f6\u7b54\uff1a1.\u5224\u65ad\u662f\u4e8b\u52a1id\u662f\u5426\u4e3a\u5f53\u524d\u4e8b\u52a1\u7684id\u30022.\u662f\u5426\u662f\u6d3b\u8dc3\u4e8b\u52a1id\u30023.\u5224\u65ad\u4e8b\u52a1\u662f\u5426\u662f\u5728readview\u521b\u5efa\u540e\u5f00\u542f\u7684\uff0c\u4e5f\u5c31\u662f\u4e8b\u52a1id\u5927\u4e8e\u5f53\u524d\u4e8b\u52a1\u30024.\u5224\u65ad\u4e8b\u52a1\u4e2d\u7684\u6570\u636e\u662f\u5426\u5df2\u63d0\u4ea4\uff0c\u4e8b\u52a1id\u5c0f\u4e8e\u6700\u5c0f\u7684\u4e8b\u52a1id\u3002\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u540c\u7684\u9694\u79bb\u7ea7\u522b\u5feb\u7167\u8bfb\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u6700\u7ec8\u7684\u8bbf\u95ee\u7ed3\u679c\u4e5f\u662f\u4e0d\u4e00\u6837\u7684\u3002\uff08\u95ee\u65f6\u7b54\uff1a\u5f53\u524d\u8bfb\uff1a\u8bfb\u53d6\u7684\u662f\u6700\u65b0\u7684\u6570\u636e\u5e76\u4e14\u4f1a\u52a0\u9501\u3002\u5feb\u7167\u8bfb\uff1a\u8bfb\u53d6\u7684\u662f\u8bb0\u5f55\u6570\u636e\u7684\u53ef\u89c1\u7248\u672c\uff0c\u4e0d\u4f1a\u52a0\u9501\u3002\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bfb\u5df2\u63d0\u4ea4\uff1a\u5728\u6bcf\u6b21\u5feb\u7167\u8bfb\u7684\u65f6\u5019\u90fd\u4f1a\u751f\u6210readview\u3002<\/p>\n\n\n\n<p 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class=\"wp-block-heading\">\u95ee\uff1aMySQL\u7684\u4e3b\u4ece\u540c\u6b65\u6709\u4e86\u89e3\u8fc7\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Mysql\u4e3b\u4ece\u540c\u6b65\u7684\u6838\u5fc3\u5c31\u662fbin log(\u4e8c\u8fdb\u5236\u65e5\u5fd7)\uff0c\u8fd9\u4e2a\u65e5\u5fd7\u4e2d\u4e3b\u8981\u8bb0\u5f55 DDL(\u8868\u7684\u64cd\u4f5c)\uff0cDML(\u8868\u4e2d\u6570\u636e\u7684\u64cd\u4f5c)\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\f3aa7d82ed115b86d5d53325747f0a1e.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\f3aa7d82ed115b86d5d53325747f0a1e.png\" 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class=\"wp-block-paragraph\">\u5728spring\u6846\u67b6\u4e2d\u6709\u4e2a\u6ce8\u89e3\u53eb@Scope\u53ef\u4ee5\u8bbe\u7f6ebean\u7684\u72b6\u6001\uff0c\u9ed8\u8ba4\u5c31\u662fsingleton\u4e5f\u5c31\u662f\u5355\u4f8b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">bean\u8fdb\u884c\u6ce8\u5165\u7684\u65f6\u90fd\u662f\u65e0\u72b6\u6001\u7684\uff0c\u5176\u4e0d\u4f1a\u88ab\u4fee\u6539\u7684\u3002\u6240\u4ee5\u6ca1\u6709\u7ebf\u7a0b\u5b89\u5168\u7684\u95ee\u9898\u3002\u4f46\u662f\u5982\u679cbean\u4e2d\u6709\u6210\u5458\u53d8\u91cf\u65f6\u5c31\u53ef\u80fd\u4f1a\u6709\u7ebf\u7a0b\u5b89\u5168\u7684\u95ee\u9898\uff0c\u56e0\u4e3a\u8be5\u6210\u5458\u53d8\u91cf\u53ef\u80fd\u4f1a\u88ab\u591a\u4e2a\u7ebf\u7a0b\u4fee\u6539\uff0c\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u6211\u4eec\u53ef\u4ee5\u52a0\u9501\u6216\u5c06bean\u8bbe\u7f6e\u4e3a\u591a\u4f8b\u3002(@Scope\u8bbe\u7f6e\u4e3aprototype)<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4ec0\u4e48\u662fAOP\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u9762\u5411\u5207\u9762\u7f16\u7a0b\uff0c\u5c06\u90a3\u4e9b\u4e8e\u4e1a\u52a1\u65e0\u5173\u7684\u590d\u7528\u6027\u6bd4\u8f83\u9ad8\u7684\u4ee3\u7801\u5feb\u62bd\u53d6\u51fa\u6765\uff0c\u8f83\u4f4e\u4ee3\u7801\u7684\u8026\u5408\u5ea6\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u5728\u4f60\u7684\u9879\u76ee\u4e2d\u6709\u4f7f\u7528\u8fc7AOP\u5417\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6211\u7684\u4e91\u76d8\u9879\u76ee\u4e2d\u5c31\u4f7f\u7528\u5230AOP\uff0c\u5728\u8bb0\u5f55\u65e5\u5fd7\u7684\u65f6\u5019\uff0c\u6211\u521b\u5efa\u6709\u4e2a\u81ea\u5b9a\u4e49\u6ce8\u89e3\uff0caop\u7684\u5207\u9762\u5c31\u662f\u8fd9\u4e2a\u6ce8\u89e3\uff0c\u4f7f\u7528\u73af\u7ed5\u901a\u77e5\u5728\u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7\u4f20\u5165\u7684\u53c2\u6570\uff08joinPoint\uff09\u83b7\u53d6\u5bf9\u5e94\u7684\u7c7b\u548c\u65b9\u6cd5\uff0c\u4ece\u800c\u83b7\u53d6\u524d\u7aef\u4f20\u6765\u7684\u53c2\u6570\u548c\u5176\u4ed6\u4e3b\u8981\u4fe1\u606f\uff0c\u5b9e\u73b0\u8bb0\u5f55\u65e5\u5fd7\u7684\u6548\u679c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1aSpring\u4e2d\u7684\u4e8b\u52a1\u662f\u600e\u4e48\u5b9e\u73b0\u7684\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u8d28\u5c31\u662f\u901a\u8fc7AOP\u5b9e\u73b0\u7684\uff0c\u901a\u8fc7\u73af\u7ed5\u901a\u77e5\u5bf9\u5e94\u65b9\u6cd5\u8fdb\u884c\u524d\u540e\u62e6\u622a\uff0c\u5728\u65b9\u6cd5\u6267\u884c\u524d\u5f00\u542f\u4e8b\u52a1\uff0c\u5728\u6267\u884c\u540e\u63d0\u4ea4\u4e8b\u52a1\uff0c\u4f1a\u5bf9\u6b64\u8fc7\u7a0b\u8fdb\u884ctry\/catch\uff0c\u5982\u679c\u62a5\u9519\u76f4\u63a5\u56de\u6eda\u3002\uff08\u5c31\u662f@transactional\uff09<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aspring\u4e2d\u4e8b\u52a1\u5931\u6548\u573a\u666f\u6709\u54ea\u4e9b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5728\u51fa\u73b0\u5f02\u5e38\u540e\uff0c\u65b9\u6cd5\u4e2dtry\/catch\u4e86\u8be5\u5f02\u5e38\u5e76\u4e14\u6ca1\u6709\u4e3b\u52a8\u629b\u51fa\u5f02\u5e38\uff0c\u8fd9\u65f6\u5019\u5c31\u4f1a\u5bfc\u81f4\u4e8b\u52a1\u5931\u6548\u3002\u89e3\u51b3\u65b9\u6cd5\uff1a\u5728\u65b9\u6cd5try\/catch\u5f02\u5e38\u540e\u624b\u52a8\u7684\u629b\u51fa\u5f02\u5e38\u3002\uff08\u5c31\u4f1a\u5bfc\u81f4\u4e8b\u52a1\u4e0d\u77e5\u9053\u51fa\u73b0\u5f02\u5e38\u4e86\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u629b\u51fa\u68c0\u67e5\u5f02\u5e38\u65f6\u4f1a\u5bfc\u81f4\u4e8b\u52a1\u5931\u6548,spring\u4e2d\u7684\u4e8b\u52a1\u53ea\u4f1a\u5bf9runtime\u5f02\u5e38\u8fdb\u884c\u56de\u6eda\u3002\u5c31\u6bd4\u5982:Not found Exception\u5c31\u662f\u68c0\u67e5\u5f02\u5e38\u3002\u89e3\u51b3\u65b9\u6cd5\uff1a\u5728@transactional\u4e2d\u8bbe\u7f6e\u5c5e\u6027 rollbackFor = Exception.class\u3002\u4f7f\u5f97\u4e8b\u52a1\u4f1a\u5bf9\u6240\u6709\u7684\u5f02\u5e38\u8fdb\u884c\u56de\u6eda\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u975epublic\u65b9\u6cd5\u4f1a\u5bfc\u81f4\u4e8b\u52a1\u5931\u6548\u3002\u89e3\u51b3\u65b9\u6cd5\uff1a\u5c06\u65b9\u6cd5\u7684\u4f5c\u7528\u57df\u8be5\u4e3apublic\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u5728\u975e\u4e8b\u52a1\u65b9\u6cd5\u4e2d\u8c03\u7528\u4e86\u4e8b\u52a1\u7684\u65b9\u6cd5\uff0c\u6b64\u65f6\u5c31\u4f1a\u5bfc\u81f4\u4e8b\u52a1\u5931\u6548\u3002\uff08\u5c31\u6bd4\u5982\u67d0\u7ed9\u6ca1\u6709\u52a0\u4e8b\u52a1\u6ce8\u89e3\u7684\u65b9\u6cd5\u8c03\u7528\u4e86\u52a0\u4e86\u4e8b\u52a1\u6ce8\u89e3\u7684\u65b9\u6cd5\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5.\u56de\u6eda\u5f02\u5e38\u7c7b\u578b\u4e0d\u5339\u914d\u3002\uff08\u6211\u4eec\u53ef\u80fd\u4f1a\u8bbe\u7f6e\u9700\u8981\u8fdb\u884c\u56de\u6eda\u7684\u5f02\u5e38\uff0c\u5c31\u662frollback\u7684\u503c\uff0c\u5982\u679c\u629b\u51fa\u7684\u5f02\u5e38\u7c7b\u578b\u4e0d\u5339\u914d\u5c31\u4f1a\u5bfc\u81f4\u4e8b\u52a1\u5931\u6548\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">6.\u4e8b\u52a1\u7684\u4f20\u64ad\u884c\u4e3a\u9519\u8bef\u3002\uff08\u5c31\u6bd4\u5982\u5728\u4e8b\u52a1\u65b9\u6cd5\u4e2d\u8c03\u7528\u4e86\u5176\u4ed6\u7684\u4e8b\u52a1\u65b9\u6cd5\uff0c\u521d\u59cb\u5316\u5982\u679c\u5176\u4ed6\u7684\u65f6\u5019\u65b9\u6cd5\u8bbe\u7f6e\u5f00\u542f\u65b0\u4e8b\u52a1\u7684\u8bdd\uff0c\u5728\u5176\u4e8b\u52a1\u6210\u529f\u540e\uff0c\u5c31\u4e0d\u4f1a\u53c2\u4e0e\u5916\u90e8\u4e8b\u52a1\u7684\u56de\u6eda\u64cd\u4f5c\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\81b3421a67504da7c793878048f1bd93.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\81b3421a67504da7c793878048f1bd93.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"61b16202cfc74859952c5a156f16e7ae.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4e8b\u52a1\u7684\u4f20\u64ad\u6027\u6709\u54ea\u4e9b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3b\u8981\u5c31\u662f\u4e09\u4e2a\uff1aPropagation_Required\uff0cPropagation_Required_new\uff0cPropagation_nested\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Propagation_Required\uff1a\u5982\u679cB\u4e3aA\u7684\u5b50\u65b9\u6cd5\uff0c\u5e76\u4e14\u90fd\u4e3a\u8be5\u4f20\u64ad\u7c7b\u578b\uff0c\u90a3\u4e48\u5b83\u4eec\u90fd\u4f1a\u5728\u540c\u4e00\u4e2a\u4e8b\u52a1\u4e2d\u3002\u5982\u679c\u4e3b\u65b9\u6cd5\u4e2d\u6ca1\u6709\u5f00\u542f\u4e8b\u52a1\u7684\u8bdd\u5c31\u4f1a\u5f00\u542f\u65b0\u4e8b\u52a1\u3002<\/li>\n\n\n\n<li>Propagation_Required_new\uff1a\u5982\u679cB\u4e3aA\u5b50\u65b9\u6cd5\uff0cB\u4f1a\u521b\u5efa\u4e00\u4e2a\u72ec\u7acb\u7684\u4e8b\u52a1\uff0cB\u4e0d\u4f1a\u53d7A\u4e8b\u52a1\u7684\u5f71\u54cd\u3002<\/li>\n\n\n\n<li>Propagation_nested\uff1a\u5982\u679cB\u4e3aA\u5b50\u65b9\u6cd5\uff0cB\u4f1a\u521b\u5efa\u4e00\u4e2a\u4e8b\u52a1\u5185\u5d4c\u5230A\u7684\u4e8b\u52a1\u4e2d\uff0c\u5982\u679cA\u4e2d\u6ca1\u6709\u4e8b\u52a1\u7684\u8bdd\uff0c\u5c31\u5355\u72ec\u5f00\u542f\u4e00\u4e2a\u4e8b\u52a1\u3002<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a@Transactional\u7684\u539f\u7406\u6709\u4e86\u89e3\u8fc7\u561b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e8b\u52a1\u6ce8\u89e3\u662f\u57fa\u4e8eAOP\u6765\u5b9e\u73b0\u7684\uff0c\u4e5f\u5c31\u662f\u5728\u6267\u884c\u65b9\u6cd5\u524d\u5f00\u542f\u4e8b\u52a1\uff0c\u5982\u679ctry\/cath\u6355\u83b7\u5230\u5f02\u5e38\u7684\u8bdd\u5c31\u4f1a\u8fdb\u884c\u56de\u6eda\uff0c\u5728\u65b9\u6cd5\u6267\u884c\u5b8c\u6210\u540e\u5c31\u4f1a\u8fdb\u884c\u63d0\u4ea4\u3002\u90a3AOP\u5b9e\u73b0\u6d89\u53ca\u5230\u52a8\u6001\u4ee3\u7406\u7684\u6d41\u7a0b\u3002\u5982\u679c\u88ab\u4ee3\u7406\u76ee\u6807\u5bf9\u8c61\u5b9e\u73b0\u4e86\u63a5\u53e3\u7684\u8bdd\uff0c\u5c31\u4f1a\u4f7f\u7528JDK Proxy\u751f\u6210\u4ee3\u7406\u5bf9\u8c61\u3002\u5982\u679c\u4ee3\u7406\u5bf9\u8c61\u6ca1\u6709\u5b9e\u73b0\u63a5\u53e3\u7684\u8bdd\uff0c\u5c31\u4f1a\u4f7f\u7528CGLIB Proxy\u751f\u6210\u88ab\u4ee3\u7406\u5bf9\u8c61\u7684\u5b50\u7c7b\u4f5c\u4e3a\u4ee3\u7406\u5bf9\u8c61\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u8bf4\u8bf4CGLIB\u7684\u6267\u884c\u6d41\u7a0b\uff1f<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aspring\u4e2dbean\u7684\u751f\u547d\u5468\u671f\u6709\u4e86\u89e3\u8fc7\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u7ed3\u6784\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\e6bf18c04b58cad429ee0465bcaec4b6.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\e6bf18c04b58cad429ee0465bcaec4b6.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"c2b1dcf71aaf44e5a14ed868a1a95c82.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u751f\u547d\u5468\u671f\u7684\u6d41\u7a0b\u4e3a\u4e0b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u901a\u8fc7BeanDefinition\u83b7\u53d6bean\u7684\u5b9a\u4e49\u4fe1\u606f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u901a\u8fc7\u6784\u9020\u51fd\u6570\u521b\u5efabean\uff0c\u53ef\u4ee5\u5c06\u5f53\u524d\u7684bean\u7406\u89e3\u4e3a\u4e00\u4e2a\u7a7a\u58f3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u8fdb\u884c\u4f9d\u8d56\u6ce8\u5165\uff0c\u5bf9bean\u4e2d\u7684\u5c5e\u6027\u8fdb\u884c\u8d4b\u503c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u5904\u7406Aware\u63a5\u53e3\uff0c\u4e5f\u5c31\u662f\u4e00\u4e9b\u4ee5Aware\u7ed3\u5c3e\u7684\u63a5\u53e3\uff0c\u5c31\u6bd4\u5982\uff1abeanNameAware\uff0cbeanFactoryAware\uff0capplicationContextAware\u3002\u5982\u679c\u5b9e\u73b0\u4e86\u4e2a\u63a5\u53e3\u7684\u8bdd\uff0c\u6211\u4eec\u9700\u8981\u91cd\u5199\u4e00\u4e9b\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5\u52a0\u8f7dBeanPostProcessor\u5bf9\u8c61\uff0c\u5e76\u6267\u884c\u5904\u7406\u5668\u7684\u524d\u7f6e\u521d\u59cb\u5316\u65b9\u6cd5(PostProcessorAfterInitiazilation\u65b9\u6cd5)\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">6.\u6267\u884c\u521d\u59cb\u5316\u65b9\u6cd5\uff0c\u5305\u62ec IntializingBean\u548c\u81ea\u5b9a\u4e49\u7684\u521d\u59cb\u5316\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">7.\u52a0\u8f7dBeanPostProcessor\u5bf9\u8c61\uff0c\u5e76\u6267\u884c\u5904\u7406\u5668\u7684\u540e\u7f6e\u521d\u59cb\u5316\u65b9\u6cd5(PostProcessorBeforeInitiazilation\u65b9\u6cd5)\u3002\u5728\u6b64\u540e\u7f6e\u5904\u7406\u5668\u4e2d\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7aop\u5bf9\u539f\u59cb\u7684bean\u505a\u589e\u5f3a\u4e5f\u5c31\u662f\u8fdb\u884c\u4ee3\u7406\uff0c\u4ee3\u7406\u5c31\u5305\u62ec JVM\u4ee3\u7406\u548cCGLIB\u4ee3\u7406\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">8.\u5c06bean\u8fdb\u884c\u9500\u6bc1\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u8bf4\u8bf4CGLIB\u52a8\u6001\u4ee3\u7406\u7684\u6267\u884c\u6d41\u7a0b\u5427\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">aop\u5c31\u662f\u91c7\u7528\u4ee3\u7406\u6a21\u5f0f\u6765\u5b9e\u73b0\u7684\u3002\u5f53\u8981\u4ee3\u7406\u7684\u5bf9\u8c61\u5b9e\u73b0\u63a5\u53e3\u7684\u65f6\u5019\uff0c\u6211\u4eec\u5c31\u4f1a\u4f7f\u7528JDK Proxy\u6765\u751f\u6210\u4ee3\u7406\u5bf9\u8c61\u3002\u5982\u679c\u4ee3\u7406\u7684\u5bf9\u8c61\u6ca1\u6709\u5b9e\u73b0\u63a5\u53e3\u7684\u8bdd\uff0c\u6211\u4eec\u5c31\u56de\u4f7f\u7528CGLIB\u751f\u6210\u4e00\u4e2a\u88ab\u4ee3\u7406\u5bf9\u8c61\u7684\u5b50\u7c7b\u4f5c\u4e3a\u4ee3\u7406\u5bf9\u8c61\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u6709\u4e86\u89e3\u8fc7bean\u7684\u5faa\u73af\u4f9d\u8d56\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5faa\u73af\u4f9d\u8d56\u4e5f\u5c31\u662f\u5faa\u73af\u5f15\u7528\uff0c\u4e24\u4e2a\u6216\u4ee5\u4e0a\u7684bean\u540c\u65f6\u76f8\u4e92\u4f9d\u8d56\u5bf9\u65b9\uff0c\u6700\u7ec8\u5f62\u6210\u95ed\u73af\u3002\u5c31\u6bd4\u5982\uff1aA\u4f9d\u8d56B\uff0cB\u4f9d\u8d56A\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">spring\u63d0\u4f9b\u4e86\u89e3\u51b3\u65b9\u6848:\u4e09\u7ea7\u7f13\u5b58\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u4e00\u7ea7\u7f13\u5b58:\u5355\u4f8b\u6c60\uff0c\u5b58\u50a8\u5df2\u7ecf\u521d\u59cb\u5316\u5b8c\u6210\u7684\u5355\u4f8bbean\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u4e8c\u7ea7\u7f13\u5b58\uff1a\u7f13\u5b58\u65e9\u671f\u7684bean\u5355\u4f8b\u5bf9\u8c61\uff0c\u5c31bean\u53ea\u5b8c\u6210\u5230\u6267\u884c\u6784\u9020\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u4e09\u7ea7\u7f13\u5b58\uff1a\u7f13\u5b58\u521b\u5efabean\u7684factory\uff0c\u8fd9\u4e9bfactory\u7528\u4e8e\u521b\u5efa\u4ee3\u7406\u5bf9\u8c61\u548c\u666e\u901a\u5bf9\u8c61\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\bdbf57b4b2a90d11e2d5525f2ed88849.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\bdbf57b4b2a90d11e2d5525f2ed88849.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"11fa6615f5f9475e8aff8cf805f13bc0.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e09\u7ea7\u7f13\u5b58\u7684\u89e3\u51b3\u6d41\u7a0b\uff08\u5f53\u524d\u95ee\u9898\u4e3aA,B\u76f8\u4e92\u4f9d\u8d56\uff09\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9e\u4f8b\u5316A\uff0c\u5e76\u5c06\u751f\u6210\u7684A\u7684objectFacttory\u5c06\u5176\u5b58\u5165\u4e09\u7ea7\u7f13\u5b58\uff0c\u56e0\u4e3aA\u4f9d\u8d56B\uff0cB\u4e5f\u4f1a\u53bb\u5b9e\u4f8b\u5316\uff0c\u521b\u5efa\u5bf9\u5e94\u7684objectFactory\u5b58\u5165\u4e09\u7ea7\u7f13\u5b58\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b64\u65f6B\u4f9d\u8d56A\uff0c\u5c31\u4f1a\u901a\u8fc7\u4e09\u7ea7\u7f13\u5b58\u4e2dA\u7684objectFactory\u751f\u6210\u65e9\u671fA\u5b9e\u4f8b\uff0c\u5e76\u5c06\u8be5A\u5b9e\u4f8b\u5b58\u50a8\u5230\u4e8c\u7ea7\u7f13\u5b58\u4e2d\uff0c\u5c06\u8fd9\u4e2a\u65e9\u671f\u7684A\u6ce8\u5165B\u4e2d\uff0c\u6b64\u65f6B\u5c31\u521b\u5efa\u5b8c\u6210\u4e86\uff0c\u5c06B\u5b9e\u4f8b\u5b58\u50a8\u5230\u4e00\u7ea7\u7f13\u5b58\u4e2d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c06\u5b8c\u6574\u7684B\u6ce8\u5165A\u4e2d\uff0c\u5c06A\u5b9e\u4f8b\u5b58\u50a8\u5230\u4e00\u7ea7\u7f13\u5b58\u4e2d\uff0c\u5e76\u5c06\u4e8c\u7ea7\u7f13\u5b58\u4e2dA\u7684\u5b9e\u4f8b\u5220\u9664\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u6784\u9020\u65b9\u6cd5\u4e2d\u51fa\u73b0\u5faa\u73af\u4f9d\u8d56\u600e\u4e48\u529e\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6784\u9020\u51fd\u6570\u4e2d\u5982\u679c\u5b58\u5728\u5faa\u73af\u4f9d\u8d56\u6211\u4eec\u5728\u51fd\u6570\u7684\u53c2\u6570\u4e0a\u6dfb\u52a0@Lazy\u5c31\u53ef\u4ee5\u89e3\u51b3\u5faa\u73af\u4f9d\u8d56\u7684\u95ee\u9898\uff0c\u4fdd\u8bc1bean\u5728\u9700\u8981\u7684\u65f6\u5019\u624d\u53bb\u52a0\u8f7d\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u53ef\u4ee5\u53ea\u4f7f\u7528\u4e8c\u7ea7\u7f13\u5b58\u6765\u89e3\u51b3\u5faa\u73af\u4f9d\u8d56\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6ca1\u6709Aop\u7684\u65f6\u5019\u5c31\u53ef\u4ee5\u4f7f\u7528\u4e00\u7ea7\u548c\u4e09\u7ea7\u7f13\u5b58\u6765\u89e3\u51b3\u4f9d\u8d56\u3002\u4f46\u662f\u5462\uff0c\u5982\u679c\u5b58\u5728aop\u7684\u95ee\u9898\uff0c\u90a3\u5c31\u5fc5\u987b\u4f7f\u7528\u4e09\u7ea7\u7f13\u5b58\uff0c\u56e0\u4e3a\u5728\u4e8c\u7ea7\u7f13\u5b58\u4e2d\u53ef\u4ee5\u4fdd\u8bc1\u5373\u4f7f\u5b58\u5728\u591a\u4e2a\u534a\u6210\u54c1bean\u7684\u5f15\u7528\u65f6\uff0c\u59cb\u7ec8\u4f1a\u8fd4\u56de\u76f8\u540c\u7684\u4ee3\u7406\u5bf9\u8c61\u3002\u907f\u514dBean\u6709\u591a\u4e2a\u4ee3\u7406\u5bf9\u8c61\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u9664\u4e86\u4f7f\u7528\u4e09\u7ea7\u7f13\u5b58\u89e3\u51b3\u5faa\u73af\u4f9d\u8d56\uff0c\u8fd8\u6709\u4ec0\u4e48\u65b9\u6cd5\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528@Lazy\u5c31\u884c\u61d2\u52a0\u8f7d\uff0c\u5c31\u6bd4\u5982A,B\u76f8\u4e92\u4f9d\u8d56\u3002\u4f46\u662f\u5462A\u6dfb\u52a0\u4e86@Lazy\u6ce8\u89e3\uff0c\u6b64\u65f6\u4f1a\u521b\u5efa\u4e00\u4e2aB\u7684\u4ee3\u7406\u5bf9\u8c61\uff0c\u800c\u975eB\u5bf9\u8c61\uff0c\u4f1a\u5c06\u8fd9\u4e2a\u4ee3\u7406\u5bf9\u8c61\u6ce8\u5165\u5230A\u4e2d\uff0c\u5b8c\u6210A\u7684\u521b\u5efa\u3002\u4e4b\u540e\u4f1a\u505aB\u7684\u521d\u59cb\u5316\u548c\u5b9e\u4f8b\u5316\uff0c\u4f1a\u5c06\u521b\u5efa\u597d\u7684A\u6ce8\u5165\u5230B\uff0c\u6700\u7ec8\u5b8c\u6210B\u7684\u521b\u5efa\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aSpringMVC\u7684\u6267\u884c\u6d41\u7a0b\u6709\u4e86\u89e3\u8fc7\u5417\uff1f<\/h4>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\9522b0eb90c301664e7a8f9e90d2ab65.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\9522b0eb90c301664e7a8f9e90d2ab65.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"4e3c2253202c4e2aaf71386ab85f530e.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">jsp\u7248\u672c\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u7528\u6237\u53d1\u9001\u8bf7\u6c42\u5230DispatchServlet\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.dispatchServlet\u8c03\u7528\u5904\u7406\u5668\u6620\u5c04\u5668HandlerMappering\uff0c\u5904\u7406\u5668\u5c31\u4f1a\u53bbController\u4e2d\u627e\u5230\u5bf9\u5e94\u7684\u65b9\u6cd5\u901a\u8fc7\u6620\u5c04\u7684\u8def\u5f84\uff0c\u7136\u540e\u5c06\u5904\u7406\u5668\u6267\u884c\u94fe\u8fd4\u56de\u7ed9dispatchServlet\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.dispatchServlet\u8c03\u7528\u5904\u7406\u5668\u9002\u914d\u5668HandlerAdaptor\u627e\u5230\u5bf9\u5e94\u7684\u5904\u7406\u5668\uff0c\u8be5\u5904\u7406\u5668\u5c31\u4f1a\u5904\u7406\u5bf9\u5e94\u7684\u53c2\u6570\u548c\u5904\u7406\u8fd4\u56de\u503c\uff0c\u6700\u7ec8\u4f1a\u8fd4\u56deModelAndView\u7ed9DispatchServlet\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.Dispatch\u8c03\u7528ViewResolver\u89c6\u56fe\u89e3\u6790\u5668\uff0c\u5e76\u5c06ModelAndView\u4f20\u5165\uff0c\u6700\u7ec8\u8fd4\u56deView\u7ed9dispatchServlet\uff0c\u901a\u8fc7View\u6e32\u67d3\u89c6\u56fe\u3002\uff08\u5c31\u6bd4\u5982\uff1aJSP\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u524d\u540e\u7aef\u5206\u79bb\u7248\u672c\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u7528\u6237\u53d1\u9001\u8bf7\u6c42\u642d\u914dDispatchServlet\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.DispatchServlet\u8c03\u7528\u5904\u7406\u5668\u6620\u5c04\u5668HandlerMappering,\u4f1a\u53bbController\u4e2d\u627e\u5230\u5bf9\u5e94\u7684\u65b9\u6cd5\uff0c\u6700\u7ec8\u5904\u7406\u5668\u8fd4\u56de\u6267\u884c\u94fe\u7ed9DispatchServlet\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.DispatchServlet\u4f1a\u8c03\u7528\u5904\u7406\u5668\u9002\u914d\u5668HandlerAdaptor\u627e\u5230\u5bf9\u5e94\u7684\u5904\u7406\u5668\uff0c\u8be5\u5904\u7406\u5668\u5c31\u4f1a\u5904\u7406\u5bf9\u5e94\u7684\u65b9\u6cd5\u7684\u53c2\u6570\u548c\u5904\u7406\u8fd4\u56de\u503c\uff0c\u5728\u65b9\u6cd5\u4e0a\u6dfb\u52a0\u4e86@ReponseBody\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u901a\u8fc7HttpMessageConverter\u5c06\u6570\u636e\u8f6c\u4e3aJson\u8fd4\u56de\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u6709\u4e86\u89e3\u8fc7springboot\u7684\u81ea\u52a8\u88c5\u914d\u539f\u7406\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u542f\u52a8\u7c7b\u4e0a\u6709\u4e2a\u6ce8\u89e3\u7684\u53eb@SpringbootApplication\uff0c\u5728\u8be5\u6ce8\u89e3\u4e2d\u5305\u542bspringbootConfiguration\u8868\u793a\u8be5\u7c7b\u4e3a\u914d\u7f6e\u7c7b\uff0c\u8fd8\u6709\u4e2a\u6ce8\u89e3\u53eb@EnableAutoConfiguration\uff0c\u8fd9\u4e2a\u5c31\u662f\u5b9e\u73b0\u81ea\u52a8\u88c5\u914d\u7684\u6838\u5fc3\u6ce8\u89e3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728@EnableAutoConfiguration\u4e2d\u4f7f\u7528\u6ce8\u89e3@Import\u5f15\u5165\u4e86\u4e00\u4e2a\u81ea\u52a8\u81ea\u52a8\u88c5\u914d\u7684\u9009\u62e9\u5668\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8be5\u9009\u62e9\u5668\u4f1a\u5230jar\u4e2d\u7684 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class=\"wp-block-paragraph\">\u5728Spring\u4e2d\u4e3b\u8981\u6ce8\u89e3\u6709\uff1a@Componment\uff0c@Controller,@Service,@Repository\u5c06\u7c7b\u914d\u7f6e\u5230ioc\u4e2d\uff0c@AutoWired\uff08\u6839\u636eclass\uff09\uff0c@Qualifier(\u6839\u636e\u540d\u5b57)\u5b9e\u73b0\u4f9d\u8d56\u6ce8\u5165\u3002@scope\u8bbe\u7f6ebean\u7684\u4f5c\u7528\u8303\u56f4\u3002@Configration\u8bbe\u7f6e\u914d\u7f6e\u7c7b\u3002@ComponetScan\u4e3b\u952e\u626b\u63cf\u3002@Bean\u5c06\u67d0\u4e2a\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u914d\u7f6e\u5230ioc\u4e2d\u3002@Import\u5c06\u67d0\u7c7b\u5bfc\u5165ioc\u4e2d\u3002@Before,@After,@Aspecr,@Around,@Pointcut\u5207\u9762\u7f16\u7a0b\u7684\u6ce8\u89e3\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\cfcedf8c208df0302938c8722049566b.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\cfcedf8c208df0302938c8722049566b.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"0d7b1337a2e049859be8aae3469ef44e.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728SpringMVC\u4e2d\u5c31\u662f\u4e00\u4e9b\u5173\u4e8e\u8bf7\u6c42\u7684\u6ce8\u89e3\uff0c@RequestMappering\uff0c@ReponseBody\uff0c@RestController\uff0c\u5df2\u7ecf\u53c2\u6570\u7684\u6ce8\u89e3 @RequestParam\uff0c@PathViriable\uff0c@RequestHeader\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\5ee7463972dd47a2697ae0b44d48ddb9.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\5ee7463972dd47a2697ae0b44d48ddb9.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"fd9109dffa3a484889062a3d2f240448.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728springboot\u7684\u6ce8\u89e3\u4e2d\u5c31\u5305\u62ec\uff1a@SpringBootConfiguration\uff0c@EnableAutoConfiguration\u81ea\u52a8\u88c5\u914d\u6ce8\u89e3\uff0c@ComponentScan\u4e4b\u95f4\u626b\u63cf\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\64a67874df83e7692f08881f74ae6535.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\64a67874df83e7692f08881f74ae6535.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"6a87f5d8eeb0460186ad22060402a65f.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u80fd\u8bf4\u8bf4\u4f60\u5bf9Mybatis\u7684\u6267\u884c\u6d41\u7a0b\u7684\u7406\u89e3\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u8bfb\u53d6mybatis-config.xml\u6587\u4ef6\uff0c\u91cc\u9762\u5c31\u662f\u6570\u636e\u5e93\u7684\u914d\u7f6e\u548cmapper\u7684\u5730\u5740\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u521b\u5efaSqlSessionFactory\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u901a\u8fc7SqlSessionFactory\u521b\u5efa\u5bf9\u5e94\u7684SqlSession\uff0c\u5c31\u662f\u9879\u76ee\u548c\u6570\u636e\u5e93\u7684\u4f1a\u8bdd\uff0cSqlSession\u5305\u542b\u6267\u884csql\u8bed\u53e5\u7684\u6240\u6709\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u6267\u884c\u64cd\u4f5c\u6570\u636e\u5e93\u7684\u63a5\u53e3,Executor\u6267\u884c\u5668\uff0c\u540c\u65f6\u8d1f\u8d23\u7f13\u5b58\u7684\u7ef4\u62a4\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5.\u5728Executor\u6267\u884c\u5668\u4e2d\u7684MapperStatement\u5bf9\u8c61\uff0c\u5f53\u64cd\u4f5c\u6570\u636e\u5e93\u7684\u65f6\u5019\u4f1a\u5c06Java\u7684\u7c7b\u578b\u8f6c\u4e3a\u6570\u636e\u5e93\u7684\u7c7b\u578b\uff0c\u5f53\u8f93\u51fa\u7ed3\u679c\u7684\u65f6\u5019\u4f1a\u5c06\u6570\u636e\u5e93\u7684\u7c7b\u578b\u8f6c\u4e3aJava\u7684\u7c7b\u578b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\9d1f1812583d5f689ade5e01e7dffbf5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\9d1f1812583d5f689ade5e01e7dffbf5.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"cbcaf3572b934c9e8ef56b60dec4da5a.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aMybatis\u652f\u6301\u5ef6\u8fdf\u52a0\u8f7d\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5ef6\u8fdf\u52a0\u8f7d\u5c31\u662f\u5f53\u9700\u8981\u4f7f\u7528\u6570\u636e\u7684\u65f6\u5019\u624d\u53bb\u52a0\u8f7d\u6570\u636e\uff0c\u4e0d\u7528\u6570\u636e\u5f97\u65f6\u5019\u4e0d\u4f1a\u4e3b\u52a8\u52a0\u8f7d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.Mybatis\u652f\u6301\u4e00\u5bf9\u4e00\u5173\u8054\u5bf9\u8c61\u548c\u4e00\u5bf9\u591a\u5173\u8054\u96c6\u5408\u7684\u5ef6\u8fdf\u52a0\u8f7d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u5728mybatis\u7684\u914d\u7f6e\u6587\u914d\u7f6e\u6587\u4ef6\u4e2d\u7684LazyloadEnabled\u8bbe\u7f6e\u4e3atrue\u5c31\u5f00\u542f\u4e86\u5168\u5c40\u5ef6\u8fdf\u52a0\u8f7d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1aMybatis\u5ef6\u8fdf\u52a0\u8f7d\u7684\u5e95\u5c42\u6709\u4e86\u89e3\u8fc7\u5417\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u901a\u8fc7GCLIB\u7684\u4ee3\u7406\u5b9e\u73b0\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5f53\u8c03\u7528\u76ee\u6807\u51fd\u6570\u7684\u65f6\u5019\uff0c\u4f1a\u8c03\u7528\u62e6\u622a\u5668\u7684invoke\u65b9\u6cd5\uff0c\u5982\u679c\u53d1\u73b0\u76ee\u6807\u65b9\u6cd5\u4e2d\u7684\u503c\u4e3anull\uff0c\u5219\u8fdb\u884csql\u67e5\u8be2\uff0c\u5728\u83b7\u53d6\u6570\u636e\u540e\u901a\u8fc7set\u8bbe\u7f6e\u5c5e\u6027\u503c\uff0c\u5728\u540e\u7eed\u8c03\u7528\u76ee\u6807\u65b9\u6cd5\u65f6\u5c31\u6709\u503c\u4e86\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u6709\u4e86\u89e3\u8fc7Mybatis\u7684\u4e00\u7ea7\u7f13\u5b58\u548c\u4e8c\u7ea7\u7f13\u5b58\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u7ea7\u7f13\u5b58\uff1a\u57fa\u4e8ePrepetualCache\u7684HashMap\u7684\u672c\u5730\u7f13\u5b58\uff0c\u662f\u9ed8\u8ba4\u5f00\u542f\u7684\uff0c\u5176\u4f5c\u7528\u57df\u5c31\u662fSession\uff0c\u5f53Session\u8fdb\u884c\u4e86Close\uff0cFlush\u540e\u8be5Session\u4e2d\u7684\u7f13\u5b58\u4f1a\u88ab\u5168\u90e8\u6e05\u7a7a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e8c\u7ea7\u7f13\u5b58\uff1a\u5176\u4f5c\u7528\u57df\u662fnamespace\u548cmapper\uff0c\u5176\u9ed8\u8ba4\u662f\u4e0d\u5f00\u542f\u7684\uff0c\u662f\u57fa\u4e8eprepetualCache,hashmap\u5b58\u50a8\u7684\u3002\u901a\u8fc7\u5728mybatis\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u8bbe\u7f6eCacheEnabled\u8bbe\u7f6e\u4e3atrue,\u5728\u5bf9\u5e94\u7684mapper\u4e2d\u6dfb\u52a0\u6807\u7b7eCache\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1aMybtis\u7684\u4e8c\u7ea7\u7f13\u5b58\u4ec0\u4e48\u65f6\u5019\u4f1a\u6e05\u7406\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u67d0\u4e2a\u4f5c\u7528\u57df(\u4e00\u7ea7\u7f13\u5b58(session)\/\u4e8c\u7ea7\u7f13\u5b58(namespace))\u4e2d\u8fdb\u884c\u4e86\u589e\u5220\u6539\u64cd\u4f5c\u65f6\u5c31\u4f1a\u6e05\u9664\u6389select\u4e2d\u7684\u7f13\u5b58\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aMybtis\u4e2d#{}\u548c${}\u7684\u533a\u522b\uff1f<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li>#{}\u4e3b\u8981\u5c31\u662f\u505a\u5360\u4f4d\u7b26\u7684\u66ff\u6362\u7684\uff0c\u5728mybatis\u4e2d\u4f1a\u4f7f\u7528?\u5360\u4f4d\uff0c\u800c${}\u4e3b\u8981\u5c31\u662f\u505a\u6587\u672c\u66ff\u6362\u7684\u3002\u66ff\u6362${}\u4e2d\u7684\u6587\u672c\u3002<\/li>\n\n\n\n<li>#{}\u6570\u636e\u7684\u66ff\u6362\u53d1\u751f\u5728DBAS\u4e4b\u4e2d\uff0c\u800c${}\u6570\u636e\u66ff\u6362\u53d1\u751f\u5728DBAS\u4e4b\u5916\u3002<\/li>\n\n\n\n<li>#{}\u5728\u505a\u6570\u636e\u66ff\u6362\u7684\u65f6\u5019\u4f1a\u81ea\u52a8\u6dfb\u52a0&#8221;\uff0c\u800c${}\u6570\u636e\u66ff\u6362\u7684\u65f6\u5019\u4e0d\u4f1a\u81ea\u52a8\u6dfb\u52a0&#8221;\u3002<\/li>\n\n\n\n<li>#{}\u53ef\u4ee5\u9632\u6b62SQL\u7684\u6ce8\u5165\uff0c\u800c${}\u4e0d\u53ef\u4ee5\u3002<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u5fae\u670d\u52a1<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aspringCloud\u7684\u4e94\u5927\u4e3b\u4ef6\u6709\u4e86\u89e3\u8fc7\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>springCloud\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u518c\u4e2d\u5fc3:Eureka\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fdc\u7a0b\u8c03\u7528:Feign\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8d1f\u8f7d\u5747\u8861:Ribbon\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u670d\u52a1\u4fdd\u62a4:Hystrix\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7f51\u5173:Gateway\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>springCloud alibaba\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u518c\u4e2d\u5fc3:Nacos\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fdc\u7a0b\u8c03\u7528:Feign\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8d1f\u8f7d\u5747\u8861:Ribbon\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u670d\u52a1\u4fdd\u62a4:Sentinel\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7f51\u5173:Gateway\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\53b73acaf23ebcf146583d093583639d.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\53b73acaf23ebcf146583d093583639d.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"f1586c6e868047929759e474a4bfce97.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u670d\u52a1\u7684\u6ce8\u518c\u4e0e\u53d1\u73b0\u662f\u4ec0\u4e48\u610f\u601d\uff1fSpringCloud\u662f\u5982\u4f55\u5b9e\u73b0\u670d\u52a1\u7684\u6ce8\u518c\u548c\u53d1\u73b0\u7684\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6211\u7684\u9879\u76ee\u4e2d\u4f7f\u7528nacos\u5b9e\u73b0\u670d\u52a1\u7684\u6ce8\u518c\u4e0e\u53d1\u73b0\u3002\u90a3\u6211\u5c31\u4ee5eureka\u4e3a\u4f8b\u5427\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u670d\u52a1\u7684\u6ce8\u518c\uff1a\u6bcf\u4e00\u4e2a\u670d\u52a1\u7684\u63d0\u4f9b\u8005\u4f1a\u5c06\u81ea\u5df1\u7684\u4fe1\u606f\u6ce8\u518c\u5230eureka\u4e2d\uff0c eureka\u4f1a\u50a8\u5b58\u63d0\u4f9b\u8005\u7684\u4fe1\u606f\uff0c\u5305\u62ec\uff1a\u670d\u52a1\u540d,ip\uff0c\u7aef\u53e3\u7b49\u7b49\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u670d\u52a1\u7684\u53d1\u73b0\uff1a\u6d88\u8d39\u8005\u4f1a\u901a\u8fc7eureka\u62c9\u53d6\u5bf9\u5e94\u7684\u670d\u52a1\u5217\u8868\uff0c\u670d\u52a1\u53ef\u80fd\u4f1a\u642d\u5efa\u96c6\u7fa4\uff0c\u6240\u4ee5\u4f1a\u5b58\u5728\u591a\u4e2a\u670d\u52a1\uff0c\u8fd9\u65f6\u5019\u6d88\u8d39\u8005\u4f1a\u6839\u636e\u8d1f\u8f7d\u5747\u8861\u7684\u7b97\u6cd5\u9009\u62e9\u4e00\u4e2a\u670d\u52a1\u5e76\u8fdb\u884c\u8c03\u7528\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u670d\u52a1\u7684\u76d1\u63a7\uff1a\u670d\u52a1\u8005\u4f1a\u6bcf\u969430\u79d2\u53d1\u9001\u5fc3\u8df3\uff0c\u4fdd\u8bc1\u81ea\u5df1\u7684\u5065\u5eb7\u72b6\u6001\uff0c\u5f53\u6ce8\u518c\u4e2d\u5fc3\u53d1\u73b0\u67d0\u4e2a\u670d\u52a190\u79d2\u90fd\u6ca1\u6709\u53d1\u9001\u5fc3\u8df3\uff0c\u5219\u4f1a\u5c06\u8be5\u5fae\u670d\u52a1\u79fb\u9664\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\8932c48363de9e84f51df9fc91dca4e8.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\8932c48363de9e84f51df9fc91dca4e8.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"67475811158941dbbeaf900187ce5ca8.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u6211\u770b\u4f60\u9879\u76ee\u4e2d\u4f7f\u7528nacos\uff0c\u4f60\u80fd\u8bf4\u8bf4nacos\u548ceureka\u7684\u533a\u522b\u5417\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u76f8\u540c\u70b9\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u90fd\u652f\u6301\u670d\u52a1\u7684\u6ce8\u518c\u548c\u53d1\u73b0\uff0c\u6574\u4e2a\u6d41\u7a0b\u4e5f\u662f\u975e\u5e38\u76f8\u4f3c\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u90fd\u652f\u6301\u670d\u52a1\u8005\u5411\u6ce8\u518c\u4e2d\u5fc3\u53d1\u9001\u5fc3\u8df3\uff0c\u76d1\u63a7\u76d1\u63a7\u72b6\u6001\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u540c\u70b9\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.nacos\u7684\u6ce8\u518c\u4e2d\u5fc3\u652f\u6301\u81ea\u52a8\u67e5\u8be2\u670d\u52a1\u8005\u7684\u72b6\u6001\uff0c\u5982\u679c\u670d\u52a1\u8005\u662f\u4e34\u65f6\u5b9e\u4f8b\u65f6\u5219\u4f7f\u7528\u5fc3\u8df3\u6a21\u5f0f\uff0c\u5982\u679c\u670d\u52a1\u8005\u662f\u975e\u4e34\u65f6\u5b9e\u4f8b\u65f6\u5c31\u91c7\u7528\u81ea\u52a8\u68c0\u6d4b\u6a21\u5f0f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u4e34\u65f6\u5b9e\u4f8b\u5982\u679c\u53d1\u73b0\u5fc3\u8df3\u4e0d\u6b63\u5e38\u65f6\u5c31\u4f1a\u79fb\u9664\u5bf9\u5e94\u7684\u670d\u52a1\uff0c\u800c\u975e\u4e34\u65f6\u5b9e\u4f8b\u5373\u4f7f\u6709\u5f02\u5e38\u4e5f\u4e0d\u4f1a\u88ab\u79fb\u9664\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.nacos\u7684\u6ce8\u518c\u4e2d\u5fc3\u652f\u6301\u5411\u6d88\u8d39\u8005\u53d1\u9001\u66f4\u65b0\u540e\u7684\u670d\u52a1\u5217\u8868\uff0c\u66f4\u65b0\u66f4\u53ca\u65f6\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.nacos\u7684\u4e34\u65f6\u5b9e\u4f8b\u4f7f\u7528\u7684AP\u6a21\u5f0f(\u9ad8\u53ef\u7528)\uff0ceureka\u9875\u4f7f\u7528AP\u6a21\u5f0f\uff0c\u975e\u4e34\u65f6\u5b9e\u4f8b\u4f7f\u7528CP\u6a21\u5f0f\uff08\u5f3a\u4e00\u81f4\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5.nacos\u8fd8\u652f\u6301\u4f5c\u4e3a\u914d\u7f6e\u4e2d\u5fc3\uff0c\u800ceureka\u5219\u4e0d\u652f\u6301\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\b92297853413807325533e4ec3d4e3d4.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\b92297853413807325533e4ec3d4e3d4.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"9a8ed08f133b4e17bafeef561746a3c5.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4f60\u4eec\u9879\u76ee\u4e2d\u7684\u8d1f\u8f7d\u5747\u8861\u662f\u600e\u4e48\u5b9e\u73b0\u7684\uff1f<\/h4>\n\n\n\n<p 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class=\"wp-block-paragraph\">4.\u533a\u57df\u654f\u611f\u7b56\u7565\uff1a\u6839\u636e\u6d88\u8d39\u8005\u533a\u57df\u6309\u7167\u5c31\u8fd1\u539f\u5219\u9009\u62e9\u670d\u52a1\u5668\uff0c\u5982\u679c\u6ca1\u6709\u533a\u57df\u8fd9\u4e2a\u6982\u5ff5\uff0c\u5176\u6548\u679c\u5c31\u548c\u8f6e\u8be2\u7b56\u7565\u6548\u679c\u4e00\u6837\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u5982\u4f55\u81ea\u5b9a\u4e49\u8d1f\u8f7d\u5747\u8861\u7684\u7b56\u7565\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u901a\u8fc7\u5b9e\u73b0\u63a5\u53e3IRule\u8bbe\u7f6e\u5bf9\u5e94\u7b56\u7565\u5e76\u8bbe\u7f6e\u5230ioc\u4e2d \uff0c\u5176\u7684\u4f5c\u7528\u57df\u662f\u5168\u5c40\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u901a\u8fc7yml\u914d\u7f6e\u6587\u4ef6\u8fdb\u884c\u914d\u7f6e\uff0c\u9700\u8981\u6307\u5b9a\u5bf9\u5e94\u7684\u670d\u52a1\u8005\u7684\u540d\u5b57\uff0c\u5176\u4f5c\u7528\u57df\u662f\u5c40\u90e8\u7684\u3002<\/p>\n\n\n\n<h4 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class=\"wp-block-paragraph\">\u670d\u52a1\u7194\u65ad\uff1a\u53ef\u4ee5\u901a\u8fc7Hytrix\u6216Sentinel\u5b9e\u73b0\u670d\u52a1\u7194\u65ad\uff0c\u90a3\u6211\u5c31\u4ee5Hytrix\u4e3a\u4f8b\u5427\uff0c\u5176\u9ed8\u8ba4\u662f\u6ca1\u6709\u5f00\u542f\u7684\uff0c\u9700\u8981\u6211\u4eec\u5728\u542f\u52a8\u7c7b\u4e0a\u6dfb\u52a0\u6ce8\u89e3@EnableCircuitBreaker\u8fdb\u884c\u5f00\u542f\u3002\u5f53\u8c03\u7528\u67d0\u4e2a\u670d\u52a110s\u65f6\uff0c\u53d1\u73b0\u670950%\u4ee5\u4e0a\u7684\u8c03\u7528\u5931\u8d25\u5c31\u4f1a\u89e6\u53d1\u7194\u65ad\u673a\u5236\uff08\u5f00\u542f\uff09\uff0c\u6bcf\u96945\u79d2\u4f1a\u653e\u884c\u4e00\u4e2a\u8bf7\u6c42\u53bb\u8bf7\u6c42\u670d\u52a1\uff08\u534a\u5f00\uff09\uff0c\u5f53\u53d1\u73b0\u670d\u52a1\u8c03\u7528\u5931\u8d25\u4e86\u5c31\u4f1a\u7ee7\u7eed\u7194\u65ad\uff0c\u5982\u679c\u8bf7\u6c42\u6210\u529f\u5219\u4f1a\u89e3\u9664\u7194\u65ad\uff08\u5173\u95ed\uff09\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4f60\u4eec\u5fae\u670d\u52a1\u662f\u600e\u4e48\u505a\u76d1\u63a7\u7684\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6211\u4eec\u7684\u9879\u76ee\u4e2d\u4e3b\u8981\u662f\u7528Skywalking\u5b8c\u6210\u76d1\u63a7\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Skywalking\u4e3b\u8981\u76d1\u63a7\u76d1\u63a7\uff0c\u670d\u52a1\u7684\u72b6\u6001\u3002\u7279\u522b\u662f\u5728\u505a\u538b\u529b\u6d4b\u8bd5\u7684\u65f6\u5019\u5c31\u80fd\u591f\u627e\u5230\u5bf9\u5e94\u7684\u6162\u63a5\u53e3\uff0c\u5e76\u5bf9\u63a5\u53e3\u8fdb\u884c\u4fee\u6539\u3002\u5728Skywlaking\u4e2d\u8fd8\u6709\u670d\u52a1\u95f4\u8c03\u7528\u7684\u62d3\u6251\u56fe\uff0c\u65b9\u4fbf\u6211\u53bb\u7406\u6e05\u8c03\u7528\u5173\u7cfb\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u4eec\u53ef\u4ee5\u5728Skywalking\u4e2d\u8bbe\u7f6e\u8b66\u544a\u89c4\u5219\uff0c\u5f53\u6211\u4eec\u7684\u9879\u76ee\u4e0a\u7ebf\u540e\uff0c\u53d1\u751f\u9519\u8bef\u5c31\u4f1a\u5411\u6211\u4eec\u8bbe\u7f6e\u7684\u7ba1\u7406\u8005\u53d1\u9001\u77ed\u4fe1\u548c\u90ae\u7bb1\u4fe1\u606f\uff0c\u4fdd\u8bc1\u7b2c\u4e00\u65f6\u95f4\u8fdb\u884c\u4fee\u6539\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4f60\u4eec\u7684\u9879\u76ee\u4e2d\u6709\u6ca1\u6709\u4f7f\u7528\u8fc7\u9650\u6d41\uff1f\u662f\u600e\u4e48\u5b9e\u73b0\u7684?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e4b\u524d\u8981\u5b66\u4e60\u8fc7\u62a2\u7968\u7684\u4e1a\u52a1\u5c31\u4f7f\u7528\u5230\u9650\u6d41\uff0c\u56e0\u4e3a\u5f53\u65f6\u7684QPS\u5230\u8fbe2000\u5de6\u53f3\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u6b63\u5e38\u7684\u8fd0\u884c\u6211\u9700\u8981\u505a\u9650\u6d41\uff0c\u901a\u8fc7\u9650\u6d41\u5c06QPS\u63a7\u5236\u57281000\u5de6\u53f3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5b9e\u73b0\u65b9\u6848\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nginx<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u63a7\u5236\u901f\u7387\uff1a\u4f7f\u7528\u6f0f\u6876\u7b97\u6cd5\u5b9e\u73b0\u3002\u53ef\u4ee5\u5b58\u50a8\u4e00\u5b9a\u6570\u91cf\u7684\u8bf7\u6c42\uff0c\u6309\u7167\u4e00\u5b9a\u7684\u901f\u7387\u5904\u7406\u8bf7\u6c42\uff0c\u5982\u679c\u8fdb\u5165\u6f0f\u6876\u7684\u4e2a\u6570\u5927\u4e8e\u6700\u5927\u503c\u5219\u4f1a\u76f4\u63a5\u4e22\u5f03\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\ac5d58c0615957e7512d3e047ae189b5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\ac5d58c0615957e7512d3e047ae189b5.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"439efb33e3e44b06ae96b6cacae24830.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u63a7\u5236\u5e76\u53d1\u6570\uff1a\u63a7\u5236\u5355\u4e2aip\u7684\u94fe\u63a5\u6570\u548c\u5e76\u53d1\u94fe\u63a5\u7684\u603b\u6570\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7f51\u5173<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7GateWay\u4e2d\u7684\u63d0\u4f9b\u8fc7\u6ee4\u5668RequestRateLimiter\u5b9e\u73b0\uff0c\u5176\u601d\u60f3\u5c31\u662f\u4ee4\u724c\u6876\u601d\u60f3\uff0c\u6bcf\u4e2a\u8bf7\u6c42\u9700\u8981\u643a\u5e26\u4ee4\u724c\u624d\u80fd\u8fdb\u884c\u8bbf\u95ee\u3002\u6211\u4eec\u53ef\u4ee5\u8bbe\u7f6e\u4ee4\u724c\u6876\u7684\u5bb9\u91cf\u548c\u4ee4\u724c\u6bcf\u79d2\u751f\u6210\u7684\u4e2a\u6570\uff0c\u5728GateWay\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u8fdb\u884c\u914d\u7f6e\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\e3bc36dc495d75757a9851e542fc4960.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\e3bc36dc495d75757a9851e542fc4960.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"f16263a8417e4fe3a9d05a0d5ec1da42.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u9650\u6d41\u7684\u7b97\u6cd5\u6709\u54ea\u4e9b\uff1f\u6709\u4ec0\u4e48\u533a\u522b\u5462\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3b\u8981\u5c31\u662f\u6f0f\u6876\u7b97\u6cd5\u548c\u4ee4\u724c\u6876\u7b97\u6cd5\u3002\u4e0d\u540c\u4e8e\u6f0f\u6876\u7b97\u6cd5\u6309\u4e00\u5b9a\u901f\u7387\u5904\u7406\u8bf7\u6c42\uff0c\u5f53\u4ee4\u724c\u6876\u4e2d\u8fd8\u6709\u4ee4\u724c\uff0c\u4e14\u88ab\u5904\u7406\u7684\u8bf7\u6c42\u6570\u5927\u4e8e\u751f\u6210\u4ee4\u724c\u7684\u901f\u7387\u65f6\uff0c\u6267\u884c\u7684\u8bf7\u6c42\u4e2a\u6570\u5c31\u4f1a\u5927\u4e8e\u6bcf\u79d2\u751f\u6210\u7684\u4ee4\u724c\u6570\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u80fd\u89e3\u91ca\u4e00\u4e0bCAP\u548cBASE\u5417?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>CAP<\/strong> \uff1a\u4e00\u81f4\u6027(c)\uff0c\u53ef\u7528\u6027(a)\uff0c\u5206\u533a\u5bb9\u9519\u6027\uff08p\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5206\u5e03\u5f0f\u7cfb\u7edf\u7684\u8282\u70b9\u90fd\u662f\u901a\u8fc7\u7f51\u7edc\u8fde\u63a5\u7684\u3002\u6240\u4ee5\u4e00\u5b9a\u4f1a\u51fa\u73b0\u5206\u533a\u7684\u95ee\u9898\uff08\u56e0\u4e3a\u7f51\u7edc\u7684\u95ee\u9898\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u56e0\u4e3a\u5206\u533a\u7684\u51fa\u73b0\u6211\u4eec\u5c31\u4e0d\u80fd\u540c\u65f6\u6ee1\u8db3\u53ef\u7528\u6027\u548c\u4e00\u81f4\u6027\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.cp\u4e3a\u5f3a\u4e00\u81f4\u6027(nacos\u7684\u975e\u4e34\u65f6\u5b9e\u4f8b\u5c31\u662f\u91c7\u7528\u6b64\u6a21\u5f0f)\uff0cap\u4e3a\u53ef\u7528\u6027(eureka\u548cnacos\u7684\u4e34\u65f6\u5b9e\u4f8b\u5c31\u662f\u5e38\u7528\u6b64\u6a21\u5f0f)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>BASE<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u57fa\u672c\u53ef\u7528\uff1a\u5206\u5e03\u5f0f\u51fa\u73b0\u6545\u969c\u7684\u65f6\u5019\uff0c\u5141\u8bb8\u635f\u5931\u90e8\u5206\u7684\u53ef\u7528\u6027\uff0c\u4fdd\u8bc1\u6838\u5fc3\u53ef\u7528\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8f6f\u72b6\u6001\uff1a\u5141\u8bb8\u51fa\u73b0\u4e2d\u95f4\u72b6\u6001\u3002\u6bd4\u5982\uff1a\u4e34\u65f6\u4e0d\u4e00\u81f4\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u7ec8\u4e00\u81f4\u6027\uff1a\u5728\u8f6f\u72b6\u6001\u7ed3\u675f\u540e\uff0c\u4fdd\u8bc1\u6700\u7ec8\u7684\u4e00\u81f4\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u89e3\u51b3\u5206\u5e03\u5f0f\u4e8b\u52a1\u7684\u601d\u60f3\u548c\u6a21\u578b<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u7ec8\u4e00\u81f4\u6027\uff1a\u5404\u4e2a\u5206\u652f\u7684\u4e8b\u52a1\u90fd\u8fdb\u884c\u63d0\u4ea4\uff0c\u5f7c\u6b64\u7ed3\u679c\u4e0d\u4e00\u6837\u5c31\u6267\u884c\u76f8\u53cd\u7684\u64cd\u4f5c\uff08\u63d2\u5165-&gt;\u5220\u9664\uff09\u4fdd\u8bc1\u6700\u7ec8\u7684\u4e00\u81f4\u6027\u3002<br>\u5f3a\u4e00\u81f4\u6027\uff1a\u5404\u4e2a\u5206\u652f\u7684\u4e8b\u52a1\u5728\u6267\u884c\u5b8c\u4e1a\u52a1\u4e4b\u540e\u4e0d\u4f1a\u63d0\u4ea4\uff0c\u90fd\u5728\u7b49\u5f85\u5f7c\u6b64\u7684\u7ed3\u679c\uff0c\u6700\u7ec8\u4e00\u8d77\u63d0\u4ea4\u6216\u56de\u6eda\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4f60\u4eec\u662f\u91c7\u7528\u54ea\u79cd\u5206\u5e03\u5f0f\u4e8b\u52a1\u6765\u89e3\u51b3\u95ee\u9898\u7684\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6211\u4eec\u7684\u7269\u6d41\u9879\u76ee\u79cd\u4e3b\u8981\u4f7f\u7528RabbitMQ\u6765\u5b9e\u73b0\u5206\u5e03\u5f0f\u4e8b\u52a1\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>MQ<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6211\u4eec\u8c03\u7528\u670d\u52a1A\u7684\u65f6\u5019\uff0c\u505a\u5b8c\u4e00\u7cfb\u5217\u7684\u5224\u65ad\u64cd\u4f5c\u540e\u5c31\u53bb\u6267\u884c\u6570\u636e\u5e93\u7684\u64cd\u4f5c\uff0c\u6b64\u65f6\u4e5f\u4f1a\u8c03\u7528\u6d88\u606f\u961f\u5217\u53d1\u9001\u6d88\u606f\u5230\u5176\u4ed6\u7684\u670d\u52a1\u53bb\uff0c\u6b64\u65f6\u6d88\u606f\u961f\u5217\u64cd\u4f5c\u548c\u6570\u636e\u5e93\u64cd\u4f5c\u662f\u5728<strong>\u540c\u4e2a\u4e8b\u52a1\u4e2d<\/strong> \u7684\u3002\u56e0\u4e3a\u5176\u662f\u5f02\u6b65\u7684\uff0c\u6240\u4ee5\u6027\u80fd\u6bd4\u8f83\u597d\u3002(\u53ef\u4ee5\u62ff\u505a\u7f13\u5b58\u4e3e\u4f8b\u5b50\uff1a\u53cc\u5199\u4e00\u81f4\u6027)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Seata<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">XA\u6a21\u5f0f\uff1a\u5f3a\u4e00\u81f4\u6027\uff08cp\uff09\uff0c\u5404\u4e2a\u5206\u652f\u4e8b\u52a1\u4e0d\u4f1a\u63d0\u4ea4\u4e8b\u52a1\uff0c\u90fd\u5728\u7b49\u5f85\u5f7c\u6b64\u7684\u7ed3\u679c\uff0c\u6700\u7ec8\u4e00\u8d77\u63d0\u4ea4\u6216\u56de\u6eda\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">TA\u6a21\u5f0f\uff1a\u6700\u7ec8\u4e00\u81f4\u6027\uff08ap\uff09\uff0c\u5404\u4e2a\u5206\u652f\u4e8b\u52a1\u90fd\u4f1a\u8fdb\u884c\u63d0\u4ea4\uff0c\u5f53\u5f7c\u6b64\u7ed3\u679c\u4e0d\u4e00\u6837\u7684\u65f6\u5019\u5c31\u4f1a\u901a\u8fc7undo\uff08\u56de\u6eda\u65e5\u5fd7\uff09\u8fdb\u884c\u9006\u64cd\u4f5c\uff0c\u4fdd\u8bc1\u6570\u636e\u6700\u7ec8\u7684\u4e00\u81f4\u6027\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">TCC\u6a21\u5f0f\uff1a\u6700\u7ec8\u4e00\u81f4\u6027\uff0c\u7c7b\u662fTA\u6a21\u5f0f\uff0c\u6027\u80fd\u6bd4\u8f83\u597d\u3002\u4f46\u662f\u9700\u8981\u4eba\u5de5\u7f16\u7801\uff0c\u8026\u5408\u5ea6\u6bd4\u8f83\u9ad8\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4f60\u4eec\u5206\u5e03\u5f0f\u670d\u52a1\u4e2d\u63a5\u53e3\u7684\u5e42\u7b49\u6027\u6027\u65f6\u600e\u4e48\u8bbe\u8ba1\u7684\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6211\u4eec\u7269\u6d41\u9879\u76ee\u7684\u8ba2\u5355\u652f\u4ed8\u6a21\u5757\u5c31\u9700\u8981\u8003\u8651\u5e42\u7b49\u6027\u7684\u95ee\u9898\uff0c\u9632\u6b62\u7528\u6237\u91cd\u590d\u652f\u4ed8\u3002\u4fdd\u8bc1\u591a\u6b21\u8c03\u7528\u8ba2\u5355\u652f\u4ed8\u7684\u63a5\u53e3\u548c\u8c03\u7528\u4e00\u6b21\u7684\u7ed3\u679c\u65f6\u4e00\u6837\u7684\u3002\u6211\u4eec\u4e3b\u8981\u901a\u8fc7\u5206\u5e03\u5f0f\u9501\u548c\u4ea4\u6613\u5355\u72b6\u6001\u7684\u5224\u65ad\u6765\u4fdd\u8bc1\u63a5\u53e3\u7684\u5e42\u7b49\u6027\u3002\uff08\u5c06\u6a21\u5f0f\u5b98\u5f15\u5bfc\u5230\u7269\u6d41\u9879\u76ee\u4e2d\uff09<\/p>\n\n\n\n<p 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class=\"wp-block-paragraph\">3.\u6d88\u8d39\u8005\u4ecebroker\u4e2d\u83b7\u53d6\u7684\u6d88\u606f\u4e22\u5931\u3002\u5f53\u5b58\u5728\u591a\u4e2a\u6d88\u8d39\u8005\u65f6\uff0c\u6bcf\u4e2a\u6d88\u8d39\u8005\u5206\u533a\u8fdb\u884c\u6d88\u8d39\uff0c\u6bcf\u96945\u79d2\u90fd\u4f1a\u81ea\u52a8\u63d0\u4ea4\u5df2\u6d88\u8d39\u7684\u5404\u4e2a\u7684\u504f\u79fb\u91cf(offset\uff0c\u6b64\u65f6\u5c31\u53ef\u80fd\u51fa\u73b0\u63d0\u4ea4\u504f\u79fb\u91cf\u540e\u6d88\u8d39\u548c\u6d88\u8d39\u540e\u63d0\u4ea4\u504f\u79fb\u91cf)\u3002\u60c5\u51b51\uff1a\u5f53\u67d0\u4e2a\u6d88\u8d39\u8005\u5728\u6d88\u8d39\u5b8c\u6d88\u606f\u540e\u672a\u63d0\u4ea4\u504f\u79fb\u5c31\u5b95\u673a\u4e86\uff0c\u6b64\u65f6\u5176\u4ed6\u7684\u6d88\u8d39\u8005\u5c31\u4f1a\u4f7f\u7528\u5c31\u5f97\u504f\u79fb\u91cf\u6d88\u8d39\u4fe1\u606f\uff0c\u5c31\u51fa\u73b0\u91cd\u590d\u6d88\u8d39\u7684\u60c5\u51b5\u3002\u60c5\u51b52\uff1a\u5f53\u63d0\u4ea4\u5b8c\u504f\u79fb\u91cf\u540e\u8fd8\u6ca1\u6d88\u8d39\u5b8c\u670d\u52a1\u5c31\u5b95\u673a\u4e86\uff0c\u6b64\u65f6\u5176\u4ed6\u6d88\u8d39\u8005\u5c31\u7528\u65b0\u7684\u504f\u79fb\u91cf\u6765\u6d88\u8d39\u6d88\u606f\uff0c\u5c31\u4f1a\u51fa\u73b0\u6d88\u606f\u4e22\u5931\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u89e3\u51b3\u65b9\u6848\uff1a\u5173\u95ed\u4e3b\u52a8\u6dfb\u52a0\uff0c\u4f7f\u7528\u624b\u52a8\u63d0\u4ea4\u3002\u63d0\u4ea4\u53d1\u9001\u4f7f\u7528 \u540c\u6b65 + \u5f02\u6b65\u63d0\u4ea4\u3002\uff08\u5148\u5728\u6d88\u8d39\u6d88\u606f\u540e\u5f02\u6b65\u63d0\u4ea4\uff0c\u5728\u6700\u540e\u518d\u8fdb\u884c\u540c\u6b65\u63d0\u4ea4\uff09<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1akafka\u662f\u5982\u4f55\u4fdd\u8bc1\u6d88\u8d39\u7684\u987a\u5e8f\u6027\u7684\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728kafka\u5b58\u50a8\u6d88\u606f\u65f6\u4f1a\u5c06\u6d88\u606f\u5b58\u50a8\u5230\u4e0d\u540c\u7684\u5206\u533a\u4e2d\u4e0d\u80fd\u4fdd\u8bc1\u6d88\u606f\u7684\u987a\u5e8f\u6027\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u4e3a\u9700\u8981\u987a\u5e8f\u6027\u7684\u6d88\u606f\u8bbe\u7f6e\u76f8\u540c\u7684\u5206\u533a\uff0c\u901a\u8fc7kafkaTemplate\u5728\u53d1\u9001\u6d88\u606f\u65f6\u8fdb\u884c\u8bbe\u7f6e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u4e3a\u9700\u8981\u987a\u5e8f\u6027\u7684\u6d88\u606f\u8bbe\u7f6e\u76f8\u540c\u7684key\uff0c\u901a\u8fc7hash\u51fd\u6570\u8ba1\u7b97\u5230\u76f8\u540c\u7684\u4f4d\u7f6e\uff0c\u5c06\u4fe1\u606f\u6563\u5217\u5230\u540c\u4e00\u4e2a\u5206\u533a\u4e2d\uff0c\u901a\u8fc7kafkaTemplate\u5728\u53d1\u9001\u6d88\u606f\u65f6\u8fdb\u884c\u8bbe\u7f6e\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1akafka\u7684\u9ad8\u53ef\u7528\u673a\u5236\u6709\u4e86\u89e3\u8fc7\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">kafka\u7684\u9ad8\u53ef\u7528\u673a\u5236\u5c31\u662f\u96c6\u7fa4\u548c\u526f\u672c\u590d\u5236\u673a\u5236\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u96c6\u7fa4\uff1a\u5728kafka\u96c6\u7fa4\u4e2d\u4f1a\u6709\u591a\u4e2abroker\uff0c\u5373\u4f7f\u6709\u67d0\u4e2abroker\u5b95\u673a\u4e5f\u4e0d\u4f1a\u670d\u52a1\u7684\u4f7f\u7528\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u526f\u672c\u590d\u5236\u673a\u5236\uff1a\u4e00\u4e2atopic\u4f1a\u6709\u591a\u4e2a\u5206\u533a\uff0c\u4e00\u4e2a\u5206\u533a\u4f1a\u6709\u591a\u4e2a\u526f\u672c\uff0c\u526f\u672c\u5206\u4e3aleader\u548cfollower\uff0c\u526f\u672c\u4f1a\u5b58\u50a8\u5728\u4e0d\u540c\u7684broker\u4e0a\uff0c\u5f53\u526f\u672c\u4e2d\u7684leader\u6302\u6389\u540e\u5c31\u4f1a\u9009\u62e9\u4e00\u4e2afollower\u4f5c\u4e3a\u65b0\u7684leader\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u80fd\u89e3\u91ca\u4e00\u4e9b\u590d\u5236\u673a\u5236\u4e2d\u7684ISR\u5417\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ISR(in-sync-replica):\u540c\u6b65\u590d\u5236\u3002\u4e5f\u5c31\u662f\u6b64\u65f6\u7684\u526f\u672c\u9700\u8981leader\u7684\u540c\u6b65\u590d\u5236\uff0c\u800c\u4e0d\u540c\u7684\u526f\u672c\u5219\u662f\u5f02\u6b65\u590d\u5236\uff0c\u56e0\u4e3a\u5f02\u6b65\u590d\u5236\u53ef\u80fd\u4f1a\u51fa\u73b0\u6570\u636e\u4e22\u5931\u7684\u60c5\u51b5\uff0c\u6240\u4ee5ISR\u526f\u672c\u7684\u6570\u636e\u66f4\u52a0\u63a5\u8fd1leader\uff0c\u5728leader\u6302\u6389\u540e\u4f1a\u4f18\u5148\u4f7f\u7528ISR\u526f\u672c\u4f5c\u4e3a\u65b0\u7684leader\u3002\uff08\u6211\u4eec\u53ef\u4ee5\u5728broker\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u8bbe\u7f6eISR\u7684\u4e2a\u6570\uff09<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1akafka\u7684\u6d88\u606f\u6e05\u7406\u673a\u5236\u6709\u4e86\u89e3\u8fc7\u5417\uff1f<\/h4>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\14436a84187b046d6063854c927f2ae9.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\14436a84187b046d6063854c927f2ae9.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"59bea442177f47f08c7d0d7b092317c6.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5148\u8bf4\u8bf4\u6570\u636e\u7684\u5b58\u50a8\u673a\u5236\u5427\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6bcf\u4e2atopic\u4f1a\u6709\u591a\u4e2a\u5206\u533a\uff0c\u6bcf\u4e2a\u5206\u533a\u53c8\u6709\u591a\u4e2a\u5206\u6bb5segment\uff0c\u5206\u6bb5\u4e3b\u8981\u4ee5\u7d22\u5f15\u6587\u4ef6\u548c\u65e5\u5fd7\u6587\u4ef6\u5b58\u50a8\u5728\u78c1\u76d8\u4e2d\u7684\uff0c\u5176\u4f18\u70b9\u5c31\u662f\u51cf\u5c11\u5355\u4e2a\u6587\u4ef6\u7684\u5185\u5bb9\u5927\u5c0f\uff0c\u52a0\u5feb\u67e5\u8be2\u901f\u5ea6\u548c\u6d88\u606f\u6e05\u9664\u7684\u901f\u5ea6\uff08\u7d22\u5f15\u548c\u65e5\u5fd7\u6587\u4ef6\u7684\u6e05\u9664\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6570\u636e\u6e05\u9664\u7b56\u7565<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u6839\u636e\u6d88\u606f\u7684\u4fdd\u7559\u65f6\u95f4\u8fdb\u884c\u6e05\u9664\uff0c\u5f53\u6d88\u606f\u7684\u4fdd\u7559\u65f6\u95f4\u8d85\u8fc7\u6307\u5b9a\u7684\u65f6\u95f4\u65f6\u5c31\u5c06\u5176\u6e05\u9664\u3002\u9ed8\u8ba4\u7684\u6307\u5b9a\u65f6\u95f4\u662f7\u5929\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u6839\u636etopic\u5b58\u50a8\u7684\u5927\u5c0f\u8fdb\u884c\u6e05\u9664\uff0c\u5f53topic\u5b58\u50a8\u7684\u5927\u5c0f\u5230\u8fbe\u9608\u503c\u65f6\u5c31\u4f1a\u89e6\u53d1\u6e05\u9664\uff0c\u5220\u9664\u6389\u5b58\u50a8\u6700\u4e45\u7684\u6d88\u606f\uff0c\u9ed8\u8ba4\u662f\u4e0d\u5f00\u542f\u7684\u3002(\u5728broker\u914d\u7f6e\u6587\u4ef6\u4e2d\u5f00\u542f)<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1akafka\u5b9e\u73b0\u9ad8\u6027\u80fd\u7684\u8bbe\u8ba1\u6709\u4e86\u89e3\u8fc7\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u6d88\u606f\u5206\u533a\uff1a\u6d88\u606f\u4e0d\u518d\u5c40\u9650\u4e8e\u5b58\u50a8\u5230\u5355\u4e2a\u670d\u52a1\u5668\u4e0a\u3002\u53ef\u4ee5\u5904\u7406\u66f4\u591a\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u987a\u5e8f\u8bfb\u5199\uff1a\u78c1\u76d8\u91c7\u7528\u987a\u5e8f\u8bfb\u5199\uff0c\u901f\u5ea6\u66f4\u5feb\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u9875\u7f13\u5b58\uff1a\u628a\u78c1\u76d8\u6570\u636e\u5148\u7f13\u5b58\u5230\u5185\u5b58\u4e2d\uff0c\u5728\u8bfb\u53d6\u6570\u636e\u65f6\u5c06\u78c1\u76d8\u8bfb\u53d6\u53d8\u4e3a\u5185\u5b58\u8bfb\u53d6\uff0c\u901f\u5ea6\u66f4\u5feb\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u96f6\u62f7\u8d1d\uff1a\u51cf\u5c11\u6570\u636e\u7684\u62f7\u8d1d\uff0c\u52a0\u5feb\u901f\u5ea6\u3002\u539f\u672c\u7684\uff1a\u7cfb\u7edf\u8d44\u6e90-&gt;\u9875\u7f13\u5b58-&gt;kafka-&gt;socket\u7f13\u5b58\u533a-&gt;\u7f51\u5361\u6700\u7ec8\u53d1\u9001\u7ed9\u6d88\u8d39\u8005\u6b64\u65f6\u4e3a\u56db\u6b21\u62f7\u8d1d\uff0c\u65b0\u7684\uff1a\u7cfb\u7edf\u8d44\u6e90-&gt;\u9875\u7f13\u5b58-&gt;\u7f51\u5361\u6700\u7ec8\u53d1\u9001\u7ed9\u6d88\u8d39\u8005\uff0c\u65b0\u7684\u62f7\u8d1d\u6bd4\u539f\u6765\u5c11\u4e24\u6b21\u3002\u901f\u5ea6\u66f4\u5feb\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\289aae51df4b698e496a983f7ee42a83.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\289aae51df4b698e496a983f7ee42a83.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"4b838200d78843b3be9df85efc37794f.png\"\/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\9773b90d392e4efad039c9a77b4e24c0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\9773b90d392e4efad039c9a77b4e24c0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"4e20c1923fef4b369df0a104a38f53da.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">5.\u6d88\u606f\u538b\u7f29\uff1a\u51cf\u5c11\u78c1\u76d8io\u548c\u7f51\u7edcio\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">6.\u5206\u6279\u53d1\u9001\uff1a\u5c06\u6d88\u606f\u6253\u5305\u6279\u91cf\u53d1\u9001\uff0c\u51cf\u5c11\u7f51\u7edc\u5f00\u9500\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u96c6\u5408<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u6570\u7ec4\u7684\u7d22\u5f15\u4e3a\u4ec0\u4e48\u4ece0\u5f00\u59cb\u800c\u4e0d\u662f\u4ece1\u5f00\u59cb\u5462\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u6570\u7ec4\u7684\u5bfb\u5740\u516c\u5f0f\u5c31\u662f \u6570\u7ec4\u7684\u5934\u5730\u5740 + \u7d22\u5f15 * \u8282\u70b9\u7684\u5927\u5c0f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u6b64\u65f6\u6211\u4eec\u4f7f\u75281\u4f5c\u4e3a\u7d22\u5f15\u5934\uff0c\u5219\u516c\u5f0f\u5c31\u53d8\u6210\u4e86 \u6570\u7ec4\u7684\u5934\u5730\u5740 + (\u7d22\u5f15 &#8211; 1) * \u8282\u70b9\u7684\u5927\u5c0f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u516c\u5f0f\u4e0a\u591a\u4e00\u4e2a\u51cf\u6cd5\u64cd\u4f5c\uff0c\u6548\u7387\u6ca1\u6709\u4ece0\u5f00\u59cb\u9ad8\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u95ee\uff1aArrayList\u5e95\u5c42\u662f\u600e\u4e48\u5b9e\u73b0\u7684\u5462\uff1f<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.ArrayList\u662f\u57fa\u4e8e\u52a8\u6001\u6570\u7ec4\u5b9e\u73b0\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5728\u5f00\u59cb\u7684\u65f6\u5019ArrayList\u7684\u957f\u5ea6\u4e3a0\uff0c\u7b2c\u4e00\u6b21\u63d0\u4ea4\u6570\u636e\u7684\u65f6\u65f6\u5019\u5c31\u4f1a\u5c06\u6269\u5bb9\u523010\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u5728\u540e\u7eed\u6211\u4eec\u505a\u65b0\u589e\u7684\u65f6\u5019\u4f1a\u5148\u5224\u65adsize + 1\u662f\u5426\u5927\u4e8e\u5f53\u524d\u7684\u6570\u7ec4\u5bb9\u91cf\uff0c\u5982\u679c\u5927\u4e8e\u7684\u8bdd\u5c31\u5c06\u5bb9\u91cf\u6269\u5bb9\u5230\u539f\u6765\u76841.5\u500d\uff0c\u5e76\u5bf9\u6570\u7ec4\u8fdb\u884c\u62f7\u8d1d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u65b0\u6570\u636e\u5c31\u5b58\u50a8\u5230\u7d22\u5f15\u4e3asize\u7684\u4f4d\u7f6e\u3002\u6700\u7ec8\u8fd4\u56deboolean\u503c\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u95ee\uff1anew 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class=\"wp-block-paragraph\">\u5728Arrays\u7c7b\u4e2d\u7684\u5b9a\u4e49\u4e86getArrayList\u5c31\u662f\u5c06\u4f20\u5165\u7684\u6570\u7ec4\u8fdb\u884c\u5305\u88c5\u4e86\u4e00\u4e0b\uff0c\u8fd8\u662f\u5bf9\u8be5\u6570\u7ec4\u7684\u5f15\u7528\uff0c\u6240\u4ee5\u5728\u6570\u636e\u4fee\u6539\u65f6\u4f1a\u53d7\u5f71\u54cd\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\1c223b27b61191ac02616397ba2ce245.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\1c223b27b61191ac02616397ba2ce245.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"5c9c7fa8598d4090a2e247e9a5fd7106.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u7528ArrayList.toArray\u65b9\u6cd5\u540e\uff0c\u4fee\u6539List\u4e2d\u7684\u503c\uff0cArray\u4f1a\u53d7\u5230\u5f71\u54cd\u5417\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd4\u56de\u7684\u6570\u7ec4\u5c31\u662fArrayList\u4e2d\u52a8\u6001\u6570\u7ec4\u7684\u62f7\u8d1d\uff0c \u56e0\u6b64\u4e0d\u4f1a\u53d7\u5f71\u54cd\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\32997dcd28e73426c05fb545718ac7d6.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\32997dcd28e73426c05fb545718ac7d6.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"76a0f448678a47dbb02375bcbf0100b4.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aArrayList\u548cLinkedList\u7684\u533a\u522b\u662f\u4ec0\u4e48\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.ArrayList\u7684\u5e95\u5c42\u662f\u4e00\u4e2a\u52a8\u6001\u7684\u6570\u7ec4\uff0c\u800cLinkedList\u7684\u5e95\u5c42\u662f\u53cc\u5411\u94fe\u8868\u3002\uff08\u5e95\u5c42\u533a\u522b\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.ArrayList\u7684\u5b58\u50a8\u7a7a\u95f4\u662f\u8fde\u7eed\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u800cLinkedList\u7684\u6bcf\u4e2a\u8282\u70b9\u90fd\u9700\u8981\u5b58\u50a8\u503c\u548c\u4e24\u4e2a\u6307\u9488\uff0c\u5728\u5b58\u50a8\u7a7a\u95f4\u4e0a\u6bd4ArrayList\u5927\u3002(\u5b58\u50a8\u7a7a\u95f4)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u67e5\u8be2\u65f6\uff1a\u7d22\u5f15\u6761\u4ef6\u5df2\u77e5\u7684\u65f6\u5019\uff0cArrayList\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(1)\uff0c\u800cLinkedList\u9700\u8981\u904d\u5386\u67e5\u627e\uff0c\u5176\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(N)\u3002\u5728\u7d22\u5f15\u672a\u77e5\u7684\u60c5\u51b5\u4e0b\uff0c\u90fd\u9700\u8981\u904d\u5386\u67e5\u627e\uff0c\u5b83\u4eec\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u90fd\u662fO(N)\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u589e\u52a0\u548c\u5220\u9664\u65f6(\u7d22\u5f15\u5df2\u77e5)\uff1aArrayList\u7684\u5934\u5c3e\u8282\u70b9\u7684\u589e\u52a0\u548c\u5220\u9664\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(1)\uff0c\u800c\u5176\u4ed6\u8282\u70b9\u4e3aO(N)\u3002LinkedList\u7684\u5934\u5c3e\u8282\u70b9\u589e\u52a0\u548c\u5220\u9664\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(1)\uff0c\u5176\u4ed6\u8282\u70b9\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(N)\u3002\uff08\u65f6\u95f4\u590d\u6742\u5ea6\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.ArrayList\u548cLinkedList\u90fd\u662f\u7ebf\u7a0b\u4e0d\u5b89\u5168\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u5728\u4f7f\u7528\u7684\u65f6\u5019\uff0c\u5c06\u5176\u8bbe\u7f6e\u4e3a\u5c40\u90e8\u53d8\u91cf\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6216\u8005\u901a\u8fc7\u4f7f\u7528Collections.synchronizedList\u65b9\u6cd5\u8fdb\u884c\u5305\u88c5\uff0c\u867d\u7136\u7ebf\u7a0b\u5b89\u5168\u4f46\u662f\u6548\u7387\u6bd4\u8f83\u4f4e\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u8bf4\u4e00\u4e0bhashMap\u7684\u539f\u7406\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">HashMap\u7684\u5e95\u5c42\u662f\u901a\u8fc7\u6563\u5217\u8868 + \u94fe\u8868 + \u7ea2\u9ed1\u6811\u5b9e\u73b0\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7\u8c03\u7528hash\u51fd\u6570\u8ba1\u7b97\u51fa\u503c\u5f97\u7d22\u5f15\u4ece\u800c\u8fdb\u884c\u6570\u636e\u5f97\u5b58\u50a8\u3002<\/p>\n\n\n\n<p 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class=\"wp-block-paragraph\">\u5728JDK1.7\u65f6\uff0cHashMap\u5728\u89e3\u51b3hash\u51fd\u6570\u51b2\u7a81\u5f97\u65f6\u5019\u4f7f\u7528\u94fe\u8868\u548c\u7ea2\u9ed1\u6811\u89e3\u51b3\uff0c\u5f53\u94fe\u8868\u7684\u957f\u5ea6\u5927\u4e8e\u7b49\u4e8e8\u4e14HashMap\u7684\u957f\u5ea6\u5927\u4e8e\u7b49\u4e8e64\u65f6\u4f1a\u5c06\u94fe\u8868\u8f6c\u5316\u4e3a\u7ea2\u9ed1\u6811\uff0c\u6b64\u65f6\u5b83\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(logN)\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u95ee\uff1a\u8bf4\u4e00\u4e0bhashMap\u7684\u6269\u5bb9\u673a\u5236\uff1f<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5728\u8fdb\u884c\u6269\u5bb9\u7684\u65f6\u5019\u4f7f\u7528\u51fd\u6570resize\u65b9\u6cd5\u8fdb\u884c\u6269\u5bb9\uff0c\u5e76\u4e14\u5728\u7b2c\u4e00\u6b21\u521d\u59cb\u5316\u7684\u65f6\u5019\u5bb9\u91cf\u4e3a16\uff0c\u5bb9\u91cf\u9600\u503c12\uff0c\u5f53\u5bb9\u91cf\u5927\u4e8e12\u65f6\u5c31\u4f1a\u89e6\u53d1\u6269\u5bb9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u6bcf\u6b21\u6269\u5bb9\u90fd\u662f\u7528\u6765\u7684\u4e24\u500d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u6269\u5bb9\u4e4b\u540e\uff0c\u4f1a\u521b\u5efa\u65b0\u7684\u6570\u7ec4\uff0c\u5c06\u65e7\u6570\u7ec4\u4e2d\u7684\u6570\u636e\u6309\u7167\u89c4\u5219\uff08\u8ba1\u7b97\u7d22\u5f15\u4f4d\u7f6e\uff09\u590d\u5236\u5230\u65b0\u7684\u6570\u7ec4\u4e2d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ca1\u6709\u54c8\u5e0c\u51b2\u7a81\u7684\u65f6\u5019\u76f4\u63a5\u590d\u5236\u5230e.hash&amp;(newCap &#8211; 1) \uff08\u65e7hash\u503c\u53d6\u65b0\u5bb9\u91cf\u7684<strong>\u6a21<\/strong> \u7684\u503c\uff0c\u5199\u6210&amp;\u8fd0\u7b97\u6548\u7387\u66f4\u9ad8\uff09\u7d22\u5f15\u7684\u4f4d\u7f6e\u4e0a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u662f\u7ea2\u9ed1\u6811\uff0c\u76f4\u63a5\u505a\u7ea2\u9ed1\u6811\u7684\u6dfb\u52a0\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u662f\u94fe\u8868\uff0c\u5219\u904d\u5386\u8be5\u94fe\u8868\uff0c\u6b64\u65f6\u94fe\u8868\u4e2d\u7684\u6570\u636e\u53ef\u80fd\u4f1a\u5b58\u50a8\u5728\u4e0d\u540c\u7684\u65b0\u8282\u70b9\u4e0a\u3002\u901a\u8fc7e.hash&amp;oldCap\u8868\u8fbe\u5f0f\u5224\u65ad\u5b58\u50a8\u7684\u4f4d\u7f6e\uff0c\u8981\u4e48\u5b58\u50a8\u5230\u539f\u59cb\u4f4d\u7f6e\u4e0a\uff0c\u8981\u4e48\u5b58\u50a8\u5230\u539f\u59cb\u4f4d\u7f6e + \u65e7\u5bb9\u91cf\u7684\u4f4d\u7f6e\u4e0a\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u8bf4\u8bf4hashMap\u7684\u5bfb\u5740\u7b97\u6cd5\u7684\u7406\u89e3\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7\u8ba1\u7b97\u6570\u636e\u7684hashCode\u7684\u503c\uff0c\u5e76\u5c06\u503c\u53f3\u79fb16\u4f4d\u505a\u5f02\u6216\u64cd\u4f5c\uff0c\u8ba1\u7b97\u51fa\u65b0\u7684hash\u503c\uff0c\u505a\u4e8c\u6b21hash\u7684\u76ee\u7684\u4e3b\u8981\u8ba9\u6570\u636e\u5206\u5e03\u7684\u66f4\u5747\u5300\u3002\u5728\u5b58\u50a8\u6570\u636e\u7684\u65f6\u5019\u5c06\u8be5hash\u503c\u505a\u53d6\u6a21\u7684\u64cd\u4f5c\uff0c\u4f46\u662f\u5728\u6e90\u7801\u4e2d\u4f7f\u7528\uff08capacity &#8211; 1\uff09&amp; hash\u5176\u662f\u7b49\u4ef7\u53d6\u6a21\u7684\uff0c\u56e0\u4e3a\u4e0e\u8fd0\u7b97\u6548\u7387\u66f4\u9ad8\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u4e3a\u4ec0\u4e48hashMap\u7684\u5927\u5c0f\u8981\u8bbe\u7f6e\u4e3a2\u7684N\u6b21\u5e42\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u8ba1\u7b97\u7d22\u5f15\u7684\u65f6\u5019\u6548\u7387\u66f4\u9ad8\uff0c\u53ea\u6709\u5f53\u5927\u5c0f\u4e3a2\u7684N\u6b21\u5e42\uff0c\u4e0e\u8fd0\u7b97\u624d\u4f1a\u7b49\u4ef7\u4e8e\u53d6\u6a21\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6269\u5bb9\u662f\u91cd\u65b0\u8ba1\u7b97\u7d22\u5f15\u7684\u6548\u7387\u66f4\u9ad8\uff0c\u5f53hash &amp; oldCap == 0\u65f6\uff0c\u5c31\u5b58\u50a8\u5230\u539f\u6765\u7684\u4f4d\u7f6e\uff0c\u53cd\u4e4b\u65e7\u5b58\u50a8\u5230\u539f\u6765\u7684\u4f4d\u7f6e + \u65e7\u5bb9\u91cf\u7684\u4f4d\u7f6e\u4e0a\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u6709\u4e86\u89e3\u8fc7hashMap1.7\u65f6\u7684\u7ebf\u7a0b\u6b7b\u9501\u7684\u95ee\u9898\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u4e3ahashMap\u90201.7\u65f6\u4f7f\u7528\u62c9\u94fe\u6cd5\uff0c\u4e14\u5728\u6269\u5bb9\u7684\u65f6\u5019\u4f7f\u7528\u5934\u63d2\u6cd5\uff0c\u5728\u6570\u636e\u8fc1\u79fb\u7684\u65f6\u5019\u5c31\u53ef\u80fd\u51fa\u73b0\u6b7b\u5faa\u73af\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\8a912b420b659ca772c4d81766193550.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\8a912b420b659ca772c4d81766193550.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"e424a20cd43e43349338a278da9dc98e.png\"\/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\d01f3d4eaa8e970041fc19194051ff14.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\d01f3d4eaa8e970041fc19194051ff14.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"6d93a62381054f9eb0b759342722ec17.png\"\/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\2044fd3f03ed80571618b1dfcb5931d5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\2044fd3f03ed80571618b1dfcb5931d5.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"16e12689dc5445518bb7e68041ab2c5e.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c31\u6bd4\u5982\u8bf4\u5f53\u524d\u6709\u4e24\u4e2a\u7ebf\u7a0b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5728\u7ebf\u7a0b1\u8fdb\u884c\u6570\u636e\u8fc1\u79fb\u7684\u65f6\u5019\uff0c\u7ebf\u7a0b2\u5148\u8fdb\u884c\u4e86\u6570\u636e\u8fc1\u79fb\uff0c\u6b64\u65f6\u56e0\u4e3a\u4f7f\u7528\u5934\u63d2\u6cd5\u7684\u539f\u56e0\uff0c\u987a\u5e8f\u4f1a\u53d8\u6210\u539f\u6765\u7684\u5012\u53d9\uff08\u5c31\u6bd4\u5982A-&gt;B\u53d8\u4e3aB-&gt;A\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5728\u7ebf\u7a0b2\u5b8c\u6210\u8fc1\u79fb\u540e\uff0c\u7ebf\u7a0b1\u4f1a\u8fdb\u884c\u6570\u636e\u7684\u8fc1\u79fb\u3002\u6b64\u65f6\u5c06A\uff0cB\u63d2\u5165\uff08\u6700\u7ec8\u53c8\u53d8\u6210A,B\u7684\u987a\u5e8f\uff09\uff0c\u56e0\u4e3a\u7ebf\u7a0b2\u7684\u539f\u56e0B\u7684\u4e0b\u4e2a\u8282\u70b9\u4e3aA\uff0c\u6240\u4ee5\u4f1a\u7ee7\u7eed\u5c06A\u505a\u5934\u63d2\u6cd5\uff0c\u5e76\u4e14\u8ba9A\u6307\u5411B\uff0c\u6b64\u65f6\u5c31\u51fa\u73b0 B-&gt;A-&gt;B\u7684\u6b7b\u5faa\u73af\uff0c\u6700\u7ec8\u5bfc\u81f4\u7ebf\u7a0b\u6b7b\u9501\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728JDK1.8\u4e4b\u540e\u4f7f\u7528\u5c3e\u63d2\u6cd5\uff0c \u5c31\u89e3\u51b3\u4e86\u6b7b\u9501\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5e76\u53d1\u7f16\u7a0b<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u591a\u7ebf\u7a0b\u95f4\u8fdb\u884c\u64cd\u4f5c\u65f6\uff0c\u5982\u679c\u4e0d\u52a0\u9501\u7684\u8bdd\uff0c\u4e3a\u4ec0\u4e48\u4f1a\u5bfc\u81f4\u6570\u636e\u9519\u8bef\u5462\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u90a3\u6211\u4eec\u5c31\u6765\u4e3e\u4e2a\u4f8b\u5b50\uff1a\u5728\u4e00\u4e2a\u7c7b\u4e2d\u5b58\u5728\u4e00\u4e2a\u9759\u6001\u53d8\u91cfa\uff0c\u6709\u4e00\u4e2a\u65b9\u6cd5\u5c31\u662f\u5bf9a\u505a++\u64cd\u4f5c\uff0c\u6709\u4e24\u4e2a\u7ebf\u7a0b\u540c\u65f6\u505a\u8c03\u7528\u65b9\u6cd5\u64cd\u4f5c\uff0c\u4f46\u662f\u4e8c\u8005\u83b7\u53d6\u7684\u662f\u672a\u88ab\u5bf9\u65b9\u4fee\u6539\u7684\u6570\u636e\uff0c\u6240\u4ee5\u5c31\u4f1a\u5bfc\u81f4\u6570\u636e\u9519\u8bef\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u5728JUC\u4e2d\u5e38\u7528\u7684\u7c7b\u6709\u54ea\u4e9b\u5462\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u6bd4\u8f83\u7406\u89e3\u7684\u5c31\u662f\u4e09\u4e2a:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>CountDownLatch\uff1a\u8ba1\u6570\uff0c\u7b49\u5f85\u53e6\u4e00\u7ebf\u7a0b\u6267\u884c\u5b8c\u4efb\u52a1\u5728\u6267\u884c\u4efb\u52a1\u3002\u91cd\u8981\u5c31\u662f\u901a\u8fc7 wait\u8fdb\u884c\u7b49\u5f85\uff0ccountDown\u8fdb\u884c\u8ba1\u6570\uff0c\u5e76\u4e14\u8ba1\u6570\u5668\u4e0d\u80fd\u91cd\u7f6e\uff0c\u4e00\u822c\u4f7f\u7528\u4e00\u6b21\u3002<\/li>\n\n\n\n<li>CyclicBarrier\uff1a\u4f5c\u7528\u548cCountDownLatch\u5dee\u4e0d\u591a\uff0c\u5927\u4f46\u662f\u5462\uff0c\u5b83\u7684\u8ba1\u6570\u5668\u53ef\u4ee5\u8fdb\u884c\u91cd\u7f6e\u8fbe\u5230\u5faa\u73af\u7684\u6548\u679c\uff0c\u5728\u6bcf\u6b21\u8c03\u7528wait\u65b9\u6cd5\u540e\u5c31\u4f1a\u5c06\u8ba1\u6570\u5668+1\uff0c\u5728\u6570\u91cf\u5230\u8fbe\u8bbe\u5b9a\u503c\u7684\u9002\u5408\u5c31\u4f1a\u91ca\u653e\u5c4f\u969c\uff0c\u7136\u7ebf\u7a0b\u6267\u884c\u4efb\u52a1\u3002<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u7ebf\u7a0b\u548c\u8fdb\u7a0b\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u4e00\u4e2a\u7a0b\u5e8f\u7684\u8fd0\u884c\u5c31\u662f\u4e00\u4e2a\u8fdb\u7a0b\uff0c\u5728\u4e00\u4e2a\u8fdb\u7a0b\u4e2d\u4f1a\u5305\u591a\u4e2a\u7ebf\u7a0b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u8fdb\u7a0b\u95f4\u662f\u4e0d\u5171\u4eab\u5185\u5b58\u7684\uff0c\u4e8c\u5728\u4e00\u4e2a\u8fdb\u7a0b\u4e2d\u7684\u7ebf\u7a0b\u662f\u5171\u4eab\u5185\u5b58\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u7ebf\u7a0b\u95f4\u7684\u4e0a\u4e0b\u6587\u5207\u6362\uff08\u7ebf\u7a0b\u4e4b\u95f4\u7684\u5207\u6362\uff09\u7684\u6210\u672c\u6bd4\u8fdb\u7a0b\u7684\u4e0a\u4e0b\u6587\u5207\u6362\uff08\u8fdb\u7a0b\u4e4b\u95f4\u7684\u5207\u6362\uff09\u6210\u672c\u4f4e\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u5e76\u53d1\u548c\u5e76\u884c\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c31\u4ee5\u6211\u4eec\u7684\u7f51\u7edc\u8bf7\u6c42\u4e3a\u4f8b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5e76\u53d1\u5c31\u662f\u670d\u52a1\u540c\u65f6\u53ef\u4ee5\u5e94\u5bf9\u591a\u4e2a\u8bf7\u6c42\u7684\u80fd\u529b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5e76\u884c\u5c31\u662f\u4e00\u4e2a\u670d\u52a1\u53ef\u4ee5\u540c\u65f6\u5904\u7406\u591a\u4e2a\u8bf7\u6c42\u7684\u80fd\u529b\u3002\uff08\u6211\u4eec\u670d\u52a1\u53ef\u80fd\u4f1a\u642d\u5efa\u96c6\u7fa4\uff09<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u7ebf\u7a0b\u521b\u5efa\u7684\u65b9\u6cd5\u6709\u54ea\u4e9b?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u901a\u8fc7\u7ee7\u627fThread\u5b9e\u73b0\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/\u7ee7\u627fThread\npublic class MyThread extends Thread{\n    @Override\n    public void run() {\n        System.out.println(\"\u521b\u5efa\u7ebf\u7a0b\u6210\u529f!\");\n    }\n\n    public static void main(String&#91;] args) {\n        MyThread myThread = new MyThread();\n        myThread.run();\n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u901a\u8fc7\u5b9e\u73b0\u63a5\u53e3Runnable\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/\u5b9e\u73b0\u63a5\u53e3Runnable\npublic class MyRunnable implements Runnable{\n    @Override\n    public void run() {\n        System.out.println(\"\u521b\u5efa\u7ebf\u7a0b\u6210\u529f!\");\n    }\n\n    public static void main(String&#91;] args) {\n        MyRunnable myRunnable = new MyRunnable();\n        Thread thread = new Thread(myRunnable);\n        thread.run();\n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u901a\u8fc7Callable\u6307\u5b9a\u5bf9\u5e94\u7684\u6cdb\u578b\uff0c\u901a\u8fc7FutureTask\u5f02\u6b65\u7684\u83b7\u53d6\u6700\u7ec8\u7684\u7ed3\u679c\uff08\u83b7\u53d6call\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\uff09\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.util.concurrent.Callable;\nimport java.util.concurrent.FutureTask;\n\n\/\/\u901a\u8fc7\u5b9e\u73b0Callable,\u9700\u8981\u6307\u5b9acall\u8fd4\u56de\u7684\u7c7b\u578b\uff0c\u8c03\u7528FutureTask\u83b7\u53d6\u5bf9\u5e94\u7684\u6570\u636e\uff0c\u521b\u5efa\u7ebf\u7a0b\npublic class MyCallable implements Callable&lt;String&gt; {\n    @Override\n    public String call() throws Exception {\n        return \"\u521b\u5efa\u7ebf\u7a0b\u6210\u529f!\";\n    }\n\n    public static void main(String&#91;] args) throws Exception {\n        MyCallable myCallable = new MyCallable();\n        FutureTask&lt;String&gt; stringFutureTask = new FutureTask&lt;&gt;(myCallable);\n        Thread thread = new Thread(stringFutureTask);\n        thread.run();\n        System.out.println(stringFutureTask.get());\n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u901a\u8fc7\u521b\u5efa\u7ebf\u7a0b\u6c60\uff0c\u9700\u8981\u53c2\u6570Runnable\u7684\u5b9e\u73b0\u7c7b\uff0c\u6700\u7ec8\u521b\u5efa\u7ebf\u7a0b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.util.concurrent.ExecutorService;\nimport java.util.concurrent.Executors;\n\npublic class MyPool implements Runnable{\n    @Override\n    public void run() {\n        System.out.println(\"\u7ebf\u7a0b\u521b\u5efa\u5b8c\u6210!\");\n    }\n\n    public static void main(String&#91;] args) {\n        ExecutorService pool = Executors.newFixedThreadPool(3);\n        \/\/\u521b\u5efa\u7ebf\u7a0b\n        pool.submit(new MyPool());\n        \/\/\u5173\u95ed\u7ebf\u7a0b\n        pool.shutdown();\n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1aRunnable\u548cCallable\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.Runnable\u7684run\u65b9\u6cd5\u6ca1\u6709\u8fd4\u56de\u503c\uff0c\u800cCallable\u7684call\u65b9\u6cd5\u5219\u6709\u8fd4\u56de\u503c\uff0c\u4e14\u8fd4\u56de\u7684\u7c7b\u578b\u662f\u4f20\u5165\u7684\u6cdb\u578b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.Runnable\u7684run\u65b9\u6cd5\u4e0d\u80fd\u629b\u51fa\u5f02\u5e38(\u53ef\u4ee5\u6355\u83b7\u5f02\u5e38)\uff0c\u800cCallable\u4e2d\u7684Call\u65b9\u6cd5\u5219\u53ef\u4ee5\u629b\u51fa\u5f02\u5e38\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u7ebf\u7a0b\u4e2d\u7684run\u65b9\u6cd5\u548cstart\u65b9\u6cd5\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Start\u65b9\u6cd5\uff1a\u7528\u4e8e\u542f\u52a8\u7ebf\u7a0b\u3002\u901a\u8fc7\u8c03\u7528run\u65b9\u6cd5\uff0c\u6267\u884crun\u4e2d\u7684\u4ee3\u7801\uff0c\u4e14start\u65b9\u6cd5\u53ea\u80fd\u80cc\u8c03\u7528\u4e00\u6b21\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Run\u65b9\u6cd5\uff1a\u5c01\u88c5\u8981\u88ab\u7ebf\u7a0b\u6267\u884c\u7684\u4ee3\u7801\uff0c\u53ef\u4ee5\u591a\u6b21\u88ab\u8c03\u7528\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u7ebf\u7a0b\u5305\u62ec\u54ea\u4e9b\u72b6\u6001\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">NEW(\u65b0\u5efa)\uff0cRUNNABLE(\u53ef\u6267\u884c\u72b6\u6001)\uff0cTERMINATED(\u7ec8\u6b62\u72b6\u6001)\uff0cWAIT(\u7b49\u5f85\u72b6\u6001)\uff0cTIME_WAIT(\u8ba1\u65f6\u7b49\u5f85\u72b6\u6001)\uff0cBLOCKED(\u963b\u585e\u72b6\u6001)<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\bf7fabbb72fb71e0ea24236b19d57ca2.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\bf7fabbb72fb71e0ea24236b19d57ca2.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"c0f0f9437b764616bf2fbb7f7bb91ae6.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u7ebf\u7a0b\u4e4b\u95f4\u7684\u72b6\u6001\u662f\u600e\u4e48\u53d8\u5316\u7684?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5728\u521b\u5efa\u7ebf\u7a0b\u7684\u65f6\u5019\u5c31\u662f\u65b0\u5efa\u72b6\u6001\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5728\u7ebf\u7a0b\u8c03\u7528start\u65b9\u6cd5\u540e\u5c31\u662f\u53ef\u6267\u884c\u72b6\u6001\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u5728\u7ebf\u7a0b\u8fd0\u884c\u5b8c\u4e4b\u540e\u5c31\u662f\u53d8\u6210\u4e86\u7ec8\u6b62\u72b6\u6001\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u5728\u7ebf\u7a0b\u5904\u4e8e\u53ef\u6267\u884c\u72b6\u6001\u65f6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7ebf\u7a0b\u9700\u8981\u4e0a\u9501\uff0c\u4e14\u6b64\u65f6\u83b7\u53d6\u9501\u5931\u8d25\uff0c\u90a3\u7ebf\u7a0b\u7684\u72b6\u6001\u5c31\u4f1a\u53d8\u6210\u963b\u585e\u72b6\u6001\u3002<\/li>\n\n\n\n<li>\u7ebf\u7a0b\u8c03\u7528wait\u65b9\u6cd5\uff0c\u5c31\u4f1a\u8fdb\u5165\u7b49\u5f85\u72b6\u6001\uff0c\u5728\u5176\u4ed6\u7ebf\u7a0b\u6ca1\u6709\u8c03\u7528notify\u65b9\u6cd5\u65f6\u5c31\u4f1a\u4e00\u76f4\u5904\u4e8e\u8fd9\u79cd\u72b6\u6001\u3002<\/li>\n\n\n\n<li>\u7ebf\u7a0b\u8c03\u7528\u4e86sleep\u65b9\u6cd5\uff0c\u5c31\u4f1a\u8fdb\u5165\u8ba1\u65f6\u7b49\u5f85\u72b6\u6001\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u5982\u679c\u521b\u5efa\u4e86T1\uff0cT2\uff0cT3\u4e09\u4e2a\u7ebf\u7a0b\uff0c\u5982\u679c\u4fdd\u8bc1\u6309\u7167\u5b83\u4eec\u7684\u987a\u5e8f\u6267\u884c\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u4f7f\u7528\u5bf9\u5e94\u7ebf\u7a0b\u7684join\u65b9\u6cd5\uff0c\u5728\u67d0\u4e2a\u7ebf\u7a0b\u6267\u884c\u4e4b\u524d\uff0c\u5148\u8c03\u7528\u5bf9\u5e94\u4e0a\u4e00\u4e2a\u7ebf\u7a0b\u7684join\u65b9\u6cd5\uff0c\u4fdd\u8bc1\u6267\u884c\u5b8c\u4e0a\u4e2a\u7ebf\u7a0b\u518d\u6267\u884c\u5f53\u524d\u7ebf\u7a0b\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1anotify\u65b9\u6cd5\u548cnotifyAll\u65b9\u6cd5\u6709\u4ec0\u4e48\u533a\u522b?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">notify\u65b9\u6cd5\uff1a\u968f\u673a\u5524\u9192\u67d0\u4e00\u4e2a\u5728\u7b49\u5f85(wait)\u7684\u7ebf\u7a0b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">notify\u65b9\u6cd5\uff1a\u5524\u9192\u6240\u6709\u7684\u5728\u7b49\u5f85(wait)\u7684\u7ebf\u7a0b\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1asleep\u65b9\u6cd5\u548cwait\u65b9\u6cd5\u7684\u533a\u522b?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u76f8\u540c\u70b9\uff1a\u90fd\u4f1a\u8ba9\u5f53\u524d\u7684\u7ebf\u7a0b\u653e\u5f03CPU\u7684\u4f7f\u7528\u6743\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u540c\u70b9:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5f52\u5c5e\u7c7b\u4e0d\u540c\uff1asleep\u65b9\u6cd5\u662fThread\u7684\u9759\u6001\u65b9\u6cd5\uff0cwait\u65b9\u6cd5\u5219\u662fObject\u90fd\u6709\u7684\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5524\u9192\u7684\u65f6\u673a\u4e0d\u540c\uff1asleep(time)\u548cwait(time)\u65b9\u6cd5\u90fd\u4f1a\u7b49\u5f85\u5bf9\u5e94\u65f6\u95f4\u540e\u9192\u6765\uff0c\u800cwait()\u5219\u4f1a\u4e00\u76f4\u7b49\u5f85\u4e0b\u53bb\uff0cwait\u65b9\u6cd5\u53ef\u4ee5\u88ab\u5524\u9192\u901a\u8fc7notify\u6216notifyAll\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.wait\u65b9\u6cd5\u9700\u8981\u914d\u5408synchronized\u4f7f\u7528\uff0c\u800csleep\u65b9\u6cd5\u5219\u4e0d\u9700\u8981\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u91ca\u653e\u9501\u7684\u4e0d\u540c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>wait\u65b9\u6cd5\u5728\u6267\u884c\u540e\u4f1a\u91ca\u653e\u5bf9\u8c61\u9501\uff0c\u4e5f\u5c31\u662f\u5728\u7761\u7720\u4e2d\u4f1a\u91ca\u653e\u9501\uff0c\u5141\u8bb8\u5176\u4ed6\u7684\u7ebf\u7a0b\u83b7\u53d6\u5bf9\u8c61\u9501\u3002\uff08\u653e\u5f03CPU\u7684\u4f7f\u7528\u6743\uff0c\u5141\u8bb8\u5176\u4ed6\u7ebf\u7a0b\u4f7f\u7528\uff09<\/li>\n\n\n\n<li>sleep\u65b9\u6cd5\u5728\u6267\u884c\u540e\u5219\u4e0d\u4f1a\u91ca\u653e\u5bf9\u8c61\u9501\uff0c\u4e5f\u5c31\u662f\u5728\u7761\u7720\u4e2d\u4e0d\u4f1a\u91ca\u653e\u9501\u3002\uff08\u653e\u5f03CPU\u4f7f\u7528\u6743\uff0c\u4e0d\u5141\u8bb8\u5176\u4ed6\u7ebf\u7a0b\u4f7f\u7528\uff09<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u95ee\uff1a\u5982\u4f55\u505c\u6b62\u4e00\u4e2a\u6b63\u5728\u8fd0\u884c\u7684\u7ebf\u7a0b\uff1f<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u4f7f\u7528\u9000\u51fa\u7684\u5e03\u5c14\u6807\u8bc6\u6765\u505c\u6b62\u7ebf\u7a0b\uff0c\u7ebf\u7a0b\u91cc\u4f1a\u505a\u4e00\u4e2a\u5faa\u73af\u7684\u64cd\u4f5c\u5224\u65ad\u8fd9\u4e2a\u6807\u8bc6\u7684\u503c(true\u65f6\u6210\u7acb)\uff0c\u5728\u9700\u8981\u505c\u6b62\u65f6\u5c06\u5e03\u5c14\u503c\u8bbe\u7f6e\u4e3afalse\uff0c\u5c31\u4f1a\u505c\u6b62\u7ebf\u7a0b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u4f7f\u7528stop\u65b9\u6cd5\u5f3a\u884c\u505c\u6b62\u7ebf\u7a0b\u3002\uff08\u5df2\u6dd8\u6c70\u4e0d\u63a8\u8350\u4f7f\u7528\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u4f7f\u7528interrupt\u505c\u6b62\u7ebf\u7a0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53\u4f7f\u7528interrupt\u65b9\u6cd5\u505c\u6b62\u5835\u585e\u7684\u7ebf\u7a0b\uff08sleep\uff0cwait\uff0cjoin\u65b9\u6cd5\uff09\u65f6\uff0c\u7ebf\u7a0b\u4f1a\u629b\u51faInterruptException\u5f02\u5e38\u3002<\/li>\n\n\n\n<li>\u5355\u4f7f\u7528interrupt\u65b9\u6cd5\u505c\u6b62\u6b63\u5e38\u7684\u7ebf\u7a0b\u7684\u65f6\u5019\uff0c\u5728\u7ebf\u7a0b\u4e2d\u4f1a\u5faa\u73af\u7684\u5224\u65ad\u7ebf\u7a0b\u662f\u5426\u4e2d\u6b62\uff08\u72b6\u6001\uff0c\u901a\u8fc7thread.isInterrupt\u65b9\u6cd5\u6765\u83b7\u53d6\u5e03\u5c14\u503c\uff09\u6765\u5224\u65ad\u662f\u5426\u505c\u7ebf\u7a0b\u3002(\u7c7b\u662f\u5e03\u5c14\u6807\u8bc6)<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aSynchronized\u5173\u952e\u5b57\u7684\u5e95\u5c42\u539f\u7406\u6709\u4e86\u89e3\u8fc7\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">synchronized\u91c7\u7528\u4e92\u65a5\u7684\u65b9\u5f0f\u81f3\u591a\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u4ee5\u83b7\u53d6\u5bf9\u5e94\u7684\u5bf9\u8c61\u9501\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7ebf\u7a0b\u5728\u8fdb\u5165synchronized\u4ee3\u7801\u5757\u7684\u65f6\u5019\u4f1a\u53bb\u5173\u8054Monitor\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Monitor\u6709\u4e09\u4e2a\u5c5e\u6027\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.ower\uff1a\u5728ower\u4e2d\u7684\u7ebf\u7a0b\u5c31\u662f\u5f53\u524d\u83b7\u53d6\u9501\u7684\u7ebf\u7a0b\u3002\u5f53ower\u4e2d\u6ca1\u6709\u503c\u7684\u65f6\u5019\uff0c\u5219\u5f53\u524d\u7ebf\u7a0b\u76f4\u63a5\u83b7\u53d6\u5bf9\u8c61\u9501\uff0c\u5e76\u5199\u5165ower\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.enrtyList\uff1a\u5728entryList\u4e2d\u7684\u7ebf\u7a0b\u5c31\u662f\u5904\u4e8e\u5835\u585e\u7684\u7ebf\u7a0b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.waitSet\uff1a\u5728waitList\u4e2d\u5c31\u662f\u5904\u4e8e\u7b49\u5f85\u7684\u7ebf\u7a0b\uff0c\u4e00\u822c\u662f\u7ebf\u7a0b\u8c03\u7528\u4e86wait\u65b9\u6cd5\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aMointer\u662f\u91cd\u91cf\u7ea7\u9501\uff0c\u6709\u4e86\u89e3\u8fc7\u9501\u7684\u5347\u7ea7\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u8c61\u7684\u5b58\u50a8\u7ed3\u6784\u4e2d\u5bf9\u8c61\u5934\u7684MarkWord\u5b58\u50a8\u7684\u5c31\u662f\u9501\u7684\u72b6\u6001\u3002\u7ebf\u7a0b\u5728\u83b7\u53d6\u9501\u540e\u4f1a\u5728\u7ebf\u7a0b\u6808\u4e2d\u5b58\u50a8\u9501\u8bb0\u5f55\uff0c\u901a\u8fc7CAS\u6307\u4ee4\u6765\u4fee\u6539\u9501\u7684\u72b6\u6001\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u91cd\u91cf\u7ea7\u9501\uff1a\u57fa\u4e8eMonitor\u5b9e\u73b0\u7684\uff0c\u6d89\u53ca\u4e0a\u4e0b\u7ebf\u7a0b\u7684\u5207\u6362\uff0c\u6548\u7387\u6bd4\u8f83\u4f4e\u4e0b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8f7b\u91cf\u7ea7\u9501\uff1a\u901a\u8fc7CAS\u6307\u4ee4\u4fee\u6539MarkWord\u4e2d\u7684\u9501\u72b6\u6001\uff0c\u51fa\u73b0\u9501\u91cd\u5165\u7684\u65f6\u5019\uff0c\u521b\u5efa\u7684\u9501\u8bb0\u5f55\u4e2d\u7684\u7684\u8bb0\u5f55\u5730\u5740\u4e3a\u8bbe\u7f6e\u4e3anull\uff0c\u6b64\u8fc7\u7a0b\u8fd8\u662f\u4f7f\u7528\u5230CAS\u6307\u4ee4\uff0c\u4fdd\u8bc1\u539f\u5b50\u6027\uff0c\u5728\u89e3\u9501\u9501\u7684\u65f6\u5019\u901a\u8fc7CAS\u6307\u4ee4\u6765\u6062\u590d\u9501\u7684\u72b6\u6001\uff08\u9501\u8bb0\u5f55\u6307\u9488\u4e3anull\u65f6\uff0c\u5219\u5c06\u9501\u8bb0\u5f55\u4e2d\u9501\u5bf9\u8c61\u7684\u5730\u5740\u8bbe\u7f6e\u4e3anull\uff09\u3002\u76f8\u6bd4\u4e8e\u91cd\u91cf\u7ea7\u9501\u6027\u80fd\u66f4\u597d\u3002\uff08\u5728\u6ca1\u6709\u7ebf\u7a0b\u7ade\u4e89\u4e14\u7ebf\u7a0b\u4ea4\u66ff\u4f7f\u7528\u65f6\u4f7f\u7528\u8f7b\u91cf\u7ea7\u9501\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u504f\u5411\u9501\uff1a\u7c7b\u4f3c\u8f7b\u91cf\u7ea7\u9501\uff0c\u5728\u7b2c\u4e00\u6b21\u83b7\u53d6\u9501\u7684\u65f6\u5019\u4f7f\u7528CAS\u6307\u4ee4\uff0c\u800c\u5728\u9501\u7684\u91cd\u5165\u7684\u65f6\u5019\u5219\u4f1a\u76f4\u63a5\u5224\u65adMarkWord\u4e2d\u7684\u7ebf\u7a0bid\u548c\u5f53\u524d\u7ebf\u7a0bid\u662f\u5426\u76f8\u540c\u5373\u53ef\u3002\u76f8\u6bd4\u4e8e\u8f7b\u91cf\u7ea7\u6027\u80fd\u66f4\u597d\u3002\uff08\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u5728\u4f7f\u7528\u9501\u65f6\u4f7f\u7528\u504f\u5411\u9501\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5728\u7ebf\u7a0b\u51b2\u7a81\u7684\u65f6\u5019\u90fd\u4f1a\u4f7f\u7528\u91cd\u91cf\u7ea7\u9501<\/strong> \u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4f60\u8c08\u8c08\u5bf9JMM\u7684\u7406\u89e3\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.JMM(java Momery Model)\uff0c\u5b83\u89c4\u5b9a\u4e86\u5171\u4eab\u5185\u5b58\u4e2d\u591a\u7ebf\u7a0b\u7684\u8bfb\u5199\u89c4\u5219\uff0c\u4fdd\u8bc1\u591a\u7ebf\u7a0b\u8bfb\u5199\u7684\u6b63\u786e\u6027\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.JMM\u628a\u5185\u5b58\u5206\u4e3a\u4e86\u4e24\u4e2a\u90e8\u5206\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u72ec\u6709\u7684\u5185\u5b58\u5757\uff08\u79c1\u6709\u5185\u5b58\uff09\uff0c\u7ebf\u7a0b\u95f4\u5171\u4eab\u7684\u5185\u5b58\u5757\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u6bcf\u4e2a\u5185\u5b58\u4e4b\u95f4\u662f\u76f8\u4e92\u9694\u79bb\u7684\uff0c\u4e3b\u8981\u662f\u901a\u8fc7\u5171\u4eab\u5185\u5b58\u8fdb\u884c\u4ea4\u4e92\u7684\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aCAS\u6709\u7406\u89e3\u8fc7\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.CAS\uff1a\u6bd4\u8f83\u540e\u518d\u4ea4\u6362\uff0c\u91c7\u7528\u7684\u662f\u4e50\u89c2\u9501\u7684\u601d\u60f3\uff0c\u5728\u7ebf\u7a0b\u8fdb\u884c\u64cd\u4f5c\u7684\u65f6\u5019\u4fdd\u8bc1\u6570\u636e\u7684\u539f\u5b50\u6027\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.CAS\u4f7f\u7528\u7684\u573a\u666f\u5f88\u591a\uff0c\u5c31\u6bd4\u5982\u6211\u4eec\u5728\u505a\u91cd\u91cf\u7ea7\u9501\u5347\u7ea7\u7684\u65f6\u5019\u4f1a\u4f7f\u7528\uff0c\u5728\u8f7b\u91cf\u7ea7\u9501\u548c\u504f\u5411\u9501\u4e2d\u4f7f\u7528\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.CAS\u91c7\u7528\u7684\u662f\u81ea\u65cb\u9501\u601d\u60f3\u7684\uff0c\u5728\u4fee\u6539\u5171\u4eab\u53d8\u91cf\u65f6\u505a\u4e00\u4e2a\u65e0\u9650\u5faa\u73af\u5224\u65ad\u7ebf\u7a0b\u83b7\u53d6\u7684\u5171\u4eab\u53d8\u91cf\u548c\u5f53\u524d\u7684\u5171\u4eab\u53d8\u91cf\u662f\u5426\u76f8\u540c\uff08\u5171\u4eab\u53d8\u91cf\u53ef\u80fd\u5728\u7ebf\u7a0b\u83b7\u53d6\u540e\uff0c\u88ab\u5176\u4ed6\u7ebf\u7a0b\u4fee\u6539\uff0c\u6240\u4ee5\u5c31\u4f1a\u5bfc\u81f4\u4e24\u6b21\u7684\u53d8\u91cf\u503c\u4e0d\u4e00\u6837\uff0c\u6b64\u65f6\u6211\u4eec\u5c31\u9700\u8981\u8ba9\u7ebf\u7a0b\u91cd\u65b0\u83b7\u53d6\u5171\u4eab\u53d8\u91cf\uff09\uff0c\u5982\u679c\u76f8\u540c\u5219\u8fdb\u884c\u4fee\u6539\uff0c\u53cd\u4e4b\u5219\u91cd\u65b0\u83b7\u53d6\u5171\u4eab\u53d8\u91cf\u7684\u6570\u636e\u3002\uff08\u5c31\u662f\u4e00\u4e2a\u4e50\u89c2\u9501\u7684\u601d\u60f3\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.CAS\u7684\u5e95\u5c42\u4f7f\u7528\u7684\u662funsafe\u7c7b\u4e2d\u7684\u65b9\u6cd5\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u90fd\u662f\u672c\u5730\u7cfb\u7edf\u7684\u65b9\u6cd5\uff0c\u662f\u7531\u5176\u4ed6\u8bed\u8a00\u5b9e\u73b0\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u4e50\u89c2\u9501\u548c\u60b2\u89c2\u9501\u6709\u8bf4\u660e\u533a\u522b\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CAS\u4f7f\u7528\u7684\u5c31\u662f\u4e50\u89c2\u9501\uff0c\u4e0d\u4f1a\u771f\u6b63\u7684\u4e0a\u9501\uff0c\u591a\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u540c\u65f6\u64cd\u4f5c\uff0c\u5728\u4fee\u6539\u6570\u636e\u524d\u4f1a\u5339\u914d\u7248\u672c\u53f7\uff0c\u5373\u4f7f\u4fee\u6539\u5931\u8d25\u4e5f\u4f1a\u8fdb\u884c\u91cd\u8bd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">synchronized\u4f7f\u7528\u7684\u5c31\u662f\u60b2\u89c2\u9501\uff0c\u6bcf\u6b21\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u80fd\u591f\u8fdb\u884c\u6570\u636e\u7684\u64cd\u4f5c\uff0c\u5176\u4ed6\u7684\u7ebf\u7a0b\u4f1a\u5904\u4e8e\u5835\u585e\u72b6\u6001\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u8c08\u8c08\u4f60\u5bf9Voliate\u7684\u7406\u89e3\u5427\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1.\u4fdd\u8bc1\u7ebf\u7a0b\u4e4b\u95f4\u7684\u53ef\u89c1\u6027<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u7ebf\u7a0b\u4e2d\u505a\u5171\u4eab\u53d8\u91cf\u7684\u5224\u65ad\u5faa\u73af\u4e14\u5faa\u73af\u8fc7\u5927\u65f6\uff0c\u53ef\u80fd\u4f1a\u88abJIT\u4f18\u5316\u4e3a\u6b7b\u5faa\u73af\uff0c\u6b64\u65f6\u5176\u4ed6\u7ebf\u7a0b\u4fee\u6539\u5171\u4eab\u53d8\u91cf\uff0c\u8be5\u7ebf\u7a0b\u4e5f\u4e0d\u4f1a\u8bfb\u53d6\u5230\u3002\u901a\u8fc7\u5bf9\u5171\u4eab\u53d8\u91cf\u6dfb\u52a0Voliate\u89e3\u51b3\u3002\uff08\u505a\u5171\u4eab\u53d8\u91cf\u5224\u65ad\u7684\u5faa\u73af\u88abJIT\u4f18\u5316\u4e3a\u6b7b\u5faa\u73af\uff0c\u5bfc\u81f4\u5171\u4eab\u53d8\u91cf\u4fee\u6539\u503c\u8bfb\u53d6\u4e0d\u5230\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2.\u9632\u6b62\u6307\u4ee4\u8fdb\u884c\u91cd\u6392\u5e8f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u7ebf\u7a0b\u6570\u91cf\u8fc7\u591a\u7684\u65f6\u5019\u4e3a\u4e86\u6548\u7387\uff0c\u6307\u4ee4\u7684\u987a\u5e8f\u53ef\u80fd\u4f1a\u8fdb\u884c\u91cd\u6392\u5e8f\u4f18\u5316\u3002\u7ed9\u5171\u4eab\u53d8\u91cf\u6dfb\u52a0volatile\uff0c\u5c31\u4f1a\u7ed9\u5171\u4eab\u53d8\u91cf\u5728\u8bfb\u5199\u64cd\u4f5c\u65f6\u6dfb\u52a0\u4e0d\u540c\u7684\u5c4f\u969c\uff0c\u9632\u6b62\u5176\u4ed6\u8bfb\u5199\u64cd\u4f5c\u8d8a\u8fc7\u5c4f\u969c\uff0c\u4ece\u800c\u9632\u6b62\u6307\u4ee4\u7684\u91cd\u6392\u5e8f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\c60d666c728273eb85c9a5eef89e27d6.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\c60d666c728273eb85c9a5eef89e27d6.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"dc1e4f2698c54bbda4e66cdf5daab816.png\"\/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\8189ea8b547a8e829b57a58b5393f6cc.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\8189ea8b547a8e829b57a58b5393f6cc.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"c6a70b0edcd84c53aba2ae0e45ace4e4.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u5bf9\u5171\u4eab\u53d8\u91cf\u6dfb\u52a0Volatile\u540e\uff1a\u5728\u5199\u64cd\u4f5c\u65f6\uff0c\u963b\u6b62\u5171\u4eab\u53d8\u91cf\u5199\u64cd\u4f5c\u7684\u4e0a\u65b9\u7684\u5176\u4ed6\u5199\u64cd\u4f5c\u5f80\u4e0b\u8d70\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u8bfb\u64cd\u4f5c\u65f6\uff0c\u963b\u6b62\u5171\u4eab\u53d8\u91cf\u8bfb\u64cd\u4f5c\u7684\u4e0b\u65b9\u7684\u5176\u4ed6\u8bfb\u64cd\u4f5c\u5f80\u4e0a\u8d70\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3.Voliate\u4e0d\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u4e3aVoliate\u662f\u4e0d\u7b26\u5408\u539f\u5b50\u6027\u7684\uff0c\u5c31\u6bd4\u5982\u6211\u4eec\u505a++\u64cd\u4f5c\u7684\u65f6\u5019\uff0c\u7ebf\u7a0b\u4e4b\u95f4\u53ef\u80fd\u90fd\u6ca1\u6709\u83b7\u53d6\u5230++\u540e\u7684\u503c\uff0c\u6700\u7ec8\u5c31\u4f1a\u5bfc\u81f4\u7ed3\u679c\u8d85\u8fc7+1\u7684\u503c\uff0c\u4e0d\u7b26\u5408\u539f\u5b50\u6027\uff0c\u6240\u4ee5\u4e0d\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4f7f\u7528Volatile\u7684\u6280\u5de7\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5199\u64cd\u4f5c\u65f6\uff0c\u8ba9Volatile\u4fee\u9970\u5728\u6700\u540e\u4e00\u4e2a\u505a\u5199\u64cd\u4f5c\u7684\u5171\u4eab\u53d8\u91cf\u4e0a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u8bfb\u64cd\u4f5c\u65f6\uff0c\u8ba9Volatile\u4fee\u9970\u7b2c\u4e00\u4e2a\u505a\u8bfb\u64cd\u4f5c\u7684\u5171\u4eab\u53d8\u91cf\u4e0a\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4ec0\u4e48\u662fAQS?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.AQS\u662f\u591a\u7ebf\u7a0b\u4e2d\u7684\u961f\u5217\u540c\u6b65\u5668\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.AQS\u7684\u5185\u90e8\u662f\u4e00\u4e2a\u5148\u8fdb\u5148\u51fa\u7684\u53cc\u5411\u961f\u5217\uff0c\u7ebf\u7a0b\u5728\u961f\u5217\u4e2d\u8fdb\u884c\u6392\u961f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.AQS\u4e2d\u7684\u5c5e\u6027state\u4e3a0\u65f6\u5c31\u662f\u65e0\u9501\u72b6\u6001\uff08\u9ed8\u8ba4\uff09\uff0c\u5f53\u4e00\u4e2a\u7ebf\u7a0b\u5c06state\u8bbe\u7f6e\u4e3a1\u7684\u65f6\u5019\u5c31\u83b7\u53d6\u4e86\u8be5\u9501\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.state\u5c5e\u6027\u7684\u4fee\u6539\u4e3b\u8981\u4f7f\u7528CAS\uff0c\u4fdd\u8bc1\u591a\u7ebf\u7a0b\u6570\u636e\u4fee\u6539\u7684\u539f\u5b50\u6027\u3002<br><img decoding=\"async\" src=\"images\\8266e84eff45051196616448b4ffe5a5.png\" alt=\"c4ae5973109e43fb8da684d91bf7576b.png\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1aAQS\u662f\u516c\u5e73\u9501\u8fd8\u662f\u975e\u516c\u5e73\u9501\uff1f\uff08\u89e3\u91ca\u4e00\u4e0b\u4e24\u4e2a\u9501\uff09<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">AQS\u65e2\u53ef\u4ee5\u5b9e\u73b0\u516c\u5e73\u9501\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u975e\u516c\u5e73\u9501\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5f53state=0\u65f6\uff0c\u5916\u6765\u7684\u7ebf\u7a0b\u4f1a\u548c\u961f\u5217\u5934\u7ebf\u7a0b\u7ade\u4e89\u9501\uff0c\u8fd9\u65f6\u5019\u5c31\u662f\u4e00\u4e2a\u975e\u516c\u5e73\u9501\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5f53state=0\u65f6\uff0c\u5916\u6765\u7684\u7ebf\u7a0b\u4f1a\u8fdb\u5165AQS\u7684\u961f\u5217\u4e2d\u6309\u987a\u5e8f\u8fdb\u884c\u6392\u961f\uff0c\u6b64\u65f6\u961f\u5934\u7684\u7ebf\u7a0b\u5c31\u53ef\u4ee5\u83b7\u53d6\u9501\u3002\u8fd9\u65f6\u5019\u5c31\u662f\u4e00\u4e2a\u516c\u5e73\u9501\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aReentrantLock\u7684\u5b9e\u73b0\u539f\u7406\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.ReentrantLock\u662f\u57fa\u4e8e\uff1a CAS + AQS\u5b9e\u73b0\u7684\uff0cReentrantLock\u5b9e\u73b0\u7684\u516c\u5e73\u9501\u548c\u975e\u516c\u5e73\u9501\u90fd\u662f\u57fa\u4e8eAQS\u63a5\u53e3\u5b9e\u73b0\u7684\u3002\uff08\u53ef\u4ee5\u89e3\u91ca\u4e00\u4e0bAQS\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\bf44ede559e11ee7811da030f9bdfb88.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\bf44ede559e11ee7811da030f9bdfb88.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"0bb2fdc5117343798dbd9f3a393cab67.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2.ReentranLock\u662f\u652f\u6301\u9501\u91cd\u5165\u7684\uff0c\u5728\u8c03\u7528Lock\u65b9\u6cd5\u540e\u53ef\u4ee5\u518d\u6b21\u8c03\u7528lock\u65b9\u6cd5\u8fdb\u884c\u9501\u91cd\u5165\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.ReentrantLock\u662f\u652f\u6301\u516c\u5e73\u9501\u548c\u975e\u516c\u5e73\u9501\uff0c\u6709\u4e24\u4e2a\u6784\u9020\u65b9\u6cd5\uff0c\u65e0\u4ea7\u6784\u9020\u65b9\u6cd5\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u975e\u516c\u5e73\u9501\uff0c\u6709\u53c2\u6784\u9020\u65b9\u6cd5\u53ef\u4ee5\u521b\u5efa\u516c\u5e73\u9501\u6216\u975e\u516c\u5e73\u9501\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\760150375832c86e360af738009560ea.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\760150375832c86e360af738009560ea.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"cb698f261f7846f98b84d7b5a844edc1.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aSynchronized\u548cLock\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5728\u8bed\u6cd5\u65b9\u9762\uff1aSynchronized\u652f\u6301\u6267\u884c\u5b8c\u540c\u6b65\u4ee3\u7801\u540e\u81ea\u52a8\u91ca\u653e\u9501\uff0c\u800cLock\u5219\u9700\u8981\u4f7f\u7528unlock\u65b9\u6cd5\u624b\u52a8\u91ca\u653e\u9501\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5728\u529f\u80fd\u65b9\u9762\uff1a\u4e8c\u8005\u90fd\u662f\u91c7\u7528\u60b2\u89c2\u9501\uff0c\u90fd\u652f\u6301\u4e92\u65a5\u548c\u9501\u91cd\u5165\u7684\u529f\u80fd\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lock\u8fd8\u652f\u6301 \u516c\u5e73\u9501\uff08\u901a\u8fc7\u961f\u5217\u6309\u987a\u5e8f\u83b7\u53d6\u9501\uff09\uff0c\u53ef\u6253\u65ad\uff08\u5728\u7ebf\u7a0b\u8fdb\u884c\u7b49\u5f85\u7684\u65f6\u5019\u53ef\u4ee5\u88ab\u6253\u65ad\uff09\uff0c\u53ef\u8d85\u65f6\uff08\u901a\u8fc7tryLock\u65b9\u6cd5\u83b7\u53d6\u9501\uff0c\u53ef\u4ee5\u5728\u65b9\u6cd5\u4e2d\u8bbe\u7f6e\u65f6\u95f4\uff0c\u5982\u679c\u83b7\u53d6\u9501\u8d85\u65f6\u5219\u83b7\u53d6\u9501\u5931\u8d25\uff09\uff0c\u591a\u6761\u4ef6\u53d8\u91cf\u3002\uff08\u53ef\u4ee5\u901a\u8fc7\u6761\u4ef6\u6765\u5524\u9192\u7ebf\u7a0b\u901a\u8fc7signal\u65b9\u6cd5\uff0clock.newCondition\u65b9\u6cd5\uff0c\u901a\u8fc7\u6761\u4ef6\u53d8\u91cf\u6765\u5524\u9192\u67d0\u4e9b\u7ebf\u7a0b\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u5728\u6027\u80fd\u65b9\u9762\uff1a\u5728\u6ca1\u6709\u7ebf\u7a0b\u7ade\u4e89\u7684\u65f6\u5019\uff0cSynchronized\u6027\u80fd\u66f4\u597d\uff0c\u56e0\u4e3aSynchronized\u652f\u6301\u9501\u5347\u7ea7\uff0c\u5305\u62ec\u8f7b\u91cf\u7ea7\u9501\u548c\u504f\u5411\u9501\u3002\u5728\u7ebf\u7a0b\u7ade\u4e89\u6fc0\u70c8\u7684\u65f6\u5019\u4f7f\u7528Lock\u6027\u80fd\u66f4\u597d\uff0c\u56e0\u4e3a\u5176\u4f7f\u7528AQS\u5b9e\u73b0\u7684\u3002\uff08\u5f15\u5bfc\u6a21\u5f0f\u5b98\u8bb2AQS\u7684\u539f\u7406\uff09<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u6b7b\u9501\u4ea7\u751f\u7684\u6761\u4ef6\u662f\u4ec0\u4e48?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u5728\u591a\u7ebf\u7a0b\u7684\u65f6\u5019\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u9700\u8981\u83b7\u53d6\u591a\u628a\u9501\uff0c\u6b64\u65f6\u53ef\u80fd\u5c31\u4f1a\u51fa\u73b0\u6b7b\u9501\u7684\u60c5\u51b5\u3002(\u7ebf\u7a0b1\uff1a\u5148\u83b7\u53d6A\u9501\u518d\u83b7\u53d6B\u9501\u3002\u7ebf\u7a0b2\uff1a\u5148\u83b7\u53d6B\u9501\u518d\u83b7\u53d6A\u9501\uff0c\u6b64\u65f6\u5c31\u4f1a\u51fa\u73b0\u6b7b\u9501\u7684\u60c5\u51b5)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u6392\u67e5\u6b7b\u9501\u7684\u65b9\u6848\u6709\u54ea\u4e9b\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u53ef\u4ee5\u4f7f\u7528JDK\u81ea\u5e26\u7684\u5de5\u5177 jps + jstack\u6765\u6392\u67e5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5148\u901a\u8fc7jps\u83b7\u53d6\u5bf9\u5e94\u6b7b\u9501\u7684\u8fdb\u7a0b\uff0c\u518d\u901a\u8fc7jstack\u51fa\u73b0\u5bf9\u5e94\u8fdb\u7a0b\u4e2d\u7ebf\u7a0b\u7684\u5806\u6808\u4fe1\u606f\uff0c\u8fdb\u884c\u4ee3\u7801\u4fee\u590d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u901a\u8fc7\u53ef\u89c6\u5316\u5de5\u5177\u6392\u67e5\u6b7b\u9501\uff0c\u5305\u62ec jconsole\uff0cvisualVM\u6765\u6392\u67e5\u6b7b\u9501\u95ee\u9898\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u804a\u4e00\u804aConcurrentHashMap?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u7ed3\u6784\u65b9\u9762\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728JDK1.7\u4e4b\u524d\uff0c\u91c7\u7528\u7684\u662f\u6570\u7ec4+\u94fe\u8868\u7684\u65b9\u5f0f\u5b9e\u73b0\u7684\u3002<\/li>\n\n\n\n<li>\u5728JDK1.8\u4e4b\u540e\uff0c\u91c7\u7528\u6570\u7ec4+\u94fe\u8868+\u7ea2\u9ed1\u6811\u7684\u65b9\u5f0f\u5b9e\u73b0\u7684\u3002\uff08\u5c31\u662fJDK1.8HashMap\u7684\u7ed3\u6784\uff09<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5728\u52a0\u9501\u65b9\u9762:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728JDK1.7\u4e4b\u524d\uff0c\u91c7\u7528\u7684\u662fsegment\u7684\u5206\u6bb5\u9501\uff0c\u5e95\u5c42\u662f\u901a\u8fc7ReentrantLock\u5b9e\u73b0\u7684\uff0c\u56e0\u4e3a\u6bcf\u4e2asegment\u53c8\u5bf9\u5e94\u4e00\u90e8\u5206\u7684\u5b58\u50a8\u4f4d\u7f6e\uff0c\u9501\u4f4f\u7684\u8303\u56f4\u662f\u6bd4\u8f83\u5927\u7684\u3002<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\2883a62ac042459baf136679dc718c36.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\2883a62ac042459baf136679dc718c36.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"c63fd5cc6ddc49daab688dd820be2c44.png\"\/><\/div><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728JDK1.8\u4e4b\u540e\uff0c\u91c7\u7528CAS\uff08\u81ea\u65cb\u9501\uff09\u6dfb\u52a0\u65b0\u7684\u8282\u70b9\uff0c\u4f1a\u4f7f\u7528Synchronized\u5bf9\u94fe\u8868\u6216\u7ea2\u9ed1\u6811\u7684\u9996\u5730\u5740\u8fdb\u884c\u52a0\u9501\uff0c\u9501\u4f4f\u7684\u8303\u56f4\u6bd4\u8f83\u5c0f\uff0c\u6548\u7387\u66f4\u9ad8\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u5bfc\u81f4\u5e76\u53d1\u7a0b\u5e8f\u51fa\u73b0\u95ee\u9898\u7684\u6839\u672c\u539f\u56e0\u662f\u4ec0\u4e48\uff1f\uff08Java\u7a0b\u5e8f\u4e2d\u5982\u4f55\u4fdd\u8bc1\u591a\u7ebf\u7a0b\u7684\u6267\u884c\u5b89\u5168\uff1f\uff09<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u539f\u5b50\u6027\uff1a\u5305\u4fdd\u8bc1\u64cd\u4f5c\u90fd\u6210\u529f\u6216\u8005\u90fd\u5931\u8d25\u3002\uff08\u5c31\u6bd4\u5982\uff1a\u901a\u8fc7\u52a0\u9501\uff0c\u9632\u6b62\u8d85\u5356\u7684\u95ee\u9898\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u53ef\u89c1\u6027\uff1a\u5728\u7ebf\u7a0b\u4e2d\u505a\u5171\u4eab\u53d8\u91cf\u7684\u5224\u65ad\u5faa\u73af\u4e14\u5faa\u73af\u8fc7\u5927\u65f6\uff0c\u53ef\u80fd\u4f1a\u88abJIT\u4f18\u5316\u4e3a\u6b7b\u5faa\u73af\uff0c\u6b64\u65f6\u5176\u4ed6\u7ebf\u7a0b\u4fee\u6539\u5171\u4eab\u53d8\u91cf\uff0c\u8be5\u7ebf\u7a0b\u4e5f\u4e0d\u4f1a\u8bfb\u53d6\u5230\u3002\u901a\u8fc7\u5bf9\u5171\u4eab\u53d8\u91cf\u6dfb\u52a0Voliate\u89e3\u51b3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u987a\u5e8f\u6027\uff1a\u5f53\u591a\u7ebf\u7a0b\u64cd\u4f5c\u65f6\uff0c\u7cfb\u7edf\u4e3a\u4e86\u6548\u7387\u53ef\u80fd\u4f1a\u5bf9\u6307\u4ee4\u8fdb\u884c\u91cd\u6392\u5e8f\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5bf9\u5171\u4eab\u53d8\u91cf\u6dfb\u52a0Volatile\u6765\u89e3\u51b3\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u8bf4\u4e00\u4e0b\u7ebf\u7a0b\u6c60\u7684\u6838\u5fc3\u53c2\u6570?(\u7ebf\u7a0b\u6c60\u7684\u6267\u884c\u539f\u7406\u77e5\u9053\u5417\uff1f)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.corePoolSize:\u7ebf\u7a0b\u6c60\u4e2d\u6838\u5fc3\u7ebf\u7a0b\u7684\u4e2a\u6570\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.maximumPoolSize:\u7ebf\u7a0b\u6c60\u4e2d\u7ebf\u7a0b\u7684\u603b\u6570\u3002\uff08\u7ebf\u7a0b\u603b\u6570=\u6838\u5fc3\u7ebf\u7a0b\u6570 + \u6551\u6025\u7ebf\u7a0b\u6570\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3. keepAliveTime:\u6551\u6025\u7ebf\u7a0b\u7684\u5b58\u6d3b\u65f6\u95f4\u3002\uff08\u6551\u6025\u7ebf\u7a0b\u7a7a\u95f2\u65f6\u7684\u5b58\u6d3b\u65f6\u95f4\u3002\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.unit:\u5b58\u6d3b\u65f6\u95f4\u7684\u5355\u4f4d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5.BlockingQueue:\u963b\u585e\u961f\u5217\uff0c\u5b58\u50a8\u54ea\u4e9b\u6ca1\u6709\u88ab\u6838\u5fc3\u7ebf\u7a0b\u6267\u884c\u7684\u4efb\u52a1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">6.ThreadFactory:\u7ebf\u7a0b\u5de5\u5382\uff0c\u7528\u4e8e\u521b\u5efa\u7ebf\u7a0b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">7.RejectExecutionHandler\uff1a\u62d2\u7edd\u7b56\u7565\u3002\uff08\u5f53\u4efb\u52a1\u5728\u961f\u5217\u4e2d\u653e\u4e0d\u4e0b\u540e\uff0c\u6267\u884c\u7684\u7b56\u7565\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\3bd3a5811a2870f169c5b82515b85963.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\3bd3a5811a2870f169c5b82515b85963.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"45e4ac8327c7454fb5e6a7ee41022949.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u62d2\u7edd\u7b56\u7565<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">AbortPolicy\uff1a\u76f4\u63a5\u629b\u51fa\u5f02\u5e38\u3002\uff08\u9ed8\u8ba4\u7b56\u7565\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CallRunsPolicy\uff1a\u76f4\u63a5\u8c03\u7528\u4e3b\u7ebf\u7a0b\u6267\u884c\u5bf9\u5e94\u7684\u4efb\u52a1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DiscardOldestPolicy\uff1a\u4e22\u6389\u5728\u5835\u585e\u961f\u5217\u4e2d\u5b58\u50a8\u6700\u4e45\u7684\u4efb\u52a1\uff0c\u5c06\u65b0\u7684\u4efb\u52a1\u5b58\u50a8\u5230\u961f\u5217\u4e2d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DiscardPolicy\uff1a\u76f4\u63a5\u4e22\u5f03\u4efb\u52a1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6267\u884c\u539f\u7406<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5728\u65b0\u7684\u4efb\u52a1\u8fdb\u6765\u540e\uff0c\u5148\u5224\u65ad\u6838\u5fc3\u7ebf\u7a0b\u662f\u5426\u5df2\u6ee1\uff0c\u5982\u679c\u6ca1\u6ee1\uff0c\u76f4\u63a5\u521b\u5efa\u4e2a\u6838\u5fc3\u7ebf\u7a0b\u53bb\u6267\u884c\u4efb\u52a1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5982\u679c\u6838\u5fc3\u7ebf\u7a0b\u6ee1\u4e86\uff0c\u5c31\u5224\u65ad\u963b\u585e\u961f\u5217\u662f\u5426\u5df2\u6ee1\uff0c\u5982\u679c\u6ca1\u6709\u6ee1\uff0c\u76f4\u63a5\u5b58\u50a8\u5230\u963b\u585e\u961f\u5217\u4e2d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u5982\u679c\u963b\u585e\u961f\u5217\u6ee1\u4e86\uff0c\u5c31\u5224\u65ad\u7ebf\u7a0b\u7684\u603b\u6570\u662f\u5426\u5927\u4e8e\u6838\u5fc3\u7ebf\u7a0b\u7684\u603b\u6570\uff0c\u5982\u679c\u5927\u4e8e\uff0c\u521b\u5efa\u6551\u6025\u7ebf\u7a0b\u53bb\u6267\u884c\u4efb\u52a1\u3002\uff08\u5f53\u6551\u6025\u7ebf\u7a0b\u548c\u6838\u5fc3\u7ebf\u7a0b\u5904\u4e8e\u7a7a\u95f2\u7684\u65f6\u5019\u5c31\u4f1a\u53bb\u6267\u884c\u5835\u585e\u961f\u5217\u4e2d\u7684\u65b9\u6cd5\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u5982\u679c\u5c0f\u4e8e\uff0c\u5c31\u53bb\u6267\u884c\u5bf9\u5e94\u7684\u62d2\u7edd\u7b56\u7565\u3002\uff08\u9ed8\u8ba4\u76f4\u63a5\u62a5\u9519\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\2345956816a691ac81c55b1ba3b49ab5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\2345956816a691ac81c55b1ba3b49ab5.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"f6bb91e6299d4971a3c938c71ba209c3.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u7ebf\u7a0b\u6c60\u4e2d\u5e38\u89c1\u7684\u963b\u585e\u961f\u5217\u53c8\u54ea\u4e9b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">LinkedBlockQueue\u548cArrayBlockQueue\u3002\u90fd\u662f\u5148\u8fdb\u5148\u51fa\u7684\u7ed3\u6784\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1aLinkedBlockQueue\u548cArrayBlockQueue\u53c8\u4ec0\u4e48\u533a\u522b\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.LinkedBlockQueue\u9ed8\u8ba4\u662f\u65e0\u754c\u7684\uff08\u9ed8\u8ba4\u7684\u65e0\u53c2\u6784\u9020\u8bbe\u7f6e\u7684\u5927\u5c0f\u4e3aInteger\u7684\u6700\u5927\u503c\uff09\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u4e3a\u6709\u754c\u7684\uff0cArrayBlockQueue\u9ed8\u8ba4\u662f\u6709\u754c\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\85e674de6111b921562a88900be3d802.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\85e674de6111b921562a88900be3d802.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"78ac8a2f92f24dbbac736e2764f3c5a7.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2.LinkedBlockQueue\u5c31\u57fa\u4e8e\u94fe\u8868\u5b9e\u73b0\u7684\uff0c\u800cArrayBlockQueue\u662f\u57fa\u4e8e\u6570\u7ec4\u5b9e\u73b0\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.LinkedBlockQueue\u662f\u60f0\u6027\u7684\uff0c\u5728\u65b0\u589e\u64cd\u4f5c\u7684\u65f6\u5019\u624d\u4f1a\u521b\u5efa\u8282\u70b9\uff0c\u800cArrayBlockQueue\u5219\u662f\u5728\u6700\u5f00\u59cb\u7684\u65f6\u5019\u5c31\u521b\u5efa\u8282\u70b9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.LinkedBlockQueue\u5728\u52a0\u9501\u7684\u65f6\u5019\u662f\u5bf9\u961f\u5934\u548c\u961f\u5c3e\u8fdb\u884c\u52a0\u9501\uff0c\u800cArrayBlockQueue\u662f\u961f\u6574\u4e2a\u6570\u7ec4\u8fdb\u884c\u52a0\u9501\u3002\uff08\u5728\u6548\u7387\u4e0aLinkedBlockQueue\u6bd4\u8f83\u9ad8\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\2b1a1f26fae515e39f76aaa9549adc32.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\2b1a1f26fae515e39f76aaa9549adc32.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"3a3d657505c7479da3b4783646d34f5e.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u5982\u4f55\u786e\u5b9a\u6838\u5fc3\u7ebf\u7a0b\u7684\u4e2a\u6570\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u8bbe\u8ba1\u7b97\u673a\u7684CPU\u6838\u6570\u4e3aN\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u67e5\u770b\u8ba1\u7b97\u673a\u7684CPU\u6838\u6570<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public static void main(String&#91;] args) {\n        \/\/\u67e5\u770b\u8ba1\u7b97\u673a\u7684\u6838\u6570\n        System.out.println(Runtime.getRuntime().availableProcessors());\n    }<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5e76\u53d1\u9ad8\uff0c\u4efb\u52a1\u65f6\u95f4\u77ed\u7684\u65f6\u5019,\u8bbe\u7f6e\u6838\u5fc3\u7ebf\u7a0b\u7684\u4e2a\u6570\u4e3a N + 1\u3002\u51cf\u5c11\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u7684\u5207\u6362\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5e76\u53d1\u4e0d\u9ad8\uff0c\u4efb\u52a1\u65f6\u95f4\u957f\u7684\u65f6\u5019\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53\u662fio\u5bc6\u96c6\u578b\u4efb\u52a1\u65f6\uff08\u4e0d\u4f1a\u5927\u91cf\u6d88\u8017cpu\u7684\u8fd0\u529b\uff0c\u5c31\u4f1a\u5bfc\u81f4cpu\u7a7a\u95f2\uff09\uff0c\u6240\u4ee5\u4f7f\u7528 2N + 1\uff08\u7ebf\u7a0b\u6570\u591a\u8bbe\u7f6e\u4e00\u70b9\uff09\u3002<\/li>\n\n\n\n<li>\u5f53\u662f\u8ba1\u7b97\u5bc6\u96c6\u578b\u4efb\u52a1\u65f6(\u6b64\u65f6\u9700\u8981\u6d88\u8017\u5927\u91cf\u7684cpu\u8ba1\u7b97\u8fd0\u529b)\uff0c\u6240\u4ee5\u4f7f\u7528 N + 1(\u7ebf\u7a0b\u6570\u5c11\u8bbe\u7f6e\u4e00\u70b9)\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u5e76\u53d1\u9ad8\uff0c\u4efb\u52a1\u65f6\u95f4\u957f\u65f6\uff0c\u5148\u4ece\u7f13\u5b58\u7684\u4f18\u5316\u8003\u8651\uff0c\u518d\u8003\u8651\u670d\u52a1\u5668\u7684\u4f18\u5316\uff0c\u6700\u540e\u5728\u8003\u8651\u7ebf\u7a0b\u6c60\u7684\u4f18\u5316\uff0c\u5206\u6790\u4efb\u52a1\u7684\u7c7b\u578b\u6765\u8bbe\u7f6e\u6838\u5fc3\u7ebf\u7a0b\u6570\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u7ebf\u7a0b\u6c60\u7684\u79cd\u7c7b\u6709\u54ea\u4e9b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u56fa\u5b9a\u7ebf\u7a0b\u6570\u7684\u7ebf\u7a0b\uff0c\u6838\u5fc3\u7ebf\u7a0b\u6570\u7b49\u4e8e\u603b\u7ebf\u7a0b\u6570\u3002\u9002\u7528\u4e8e\u4efb\u52a1\u91cf\u5df2\u77e5\u4e14\u4efb\u52a1\u8017\u65f6\u957f\u7684\u65f6\u5019\uff08\u4e0d\u8003\u8651\u521b\u5efa\u6551\u6025\u7ebf\u7a0b\uff09\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\61f3829fd835e560fa9d912a133d9ea8.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\61f3829fd835e560fa9d912a133d9ea8.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"897c30b643f747009421600e3c5ad3f1.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5355\u7ebf\u7a0b\u7684\u7ebf\u7a0b\u6c60\uff0c\u5c31\u53ea\u6709\u4e00\u4e2a\u6838\u5fc3\u7ebf\u7a0b\u3002\u6309\u5148\u8fdb\u5148\u51fa\u7684\u7b56\u7565\u8fdb\u884c\u3002\u9002\u7528\u4e8e\u6309\u7167\u987a\u5e8f\u6267\u884c\u7684\u4efb\u52a1\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\8a395d6fecc51b74bebefa5a5a117aa5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\8a395d6fecc51b74bebefa5a5a117aa5.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"43ece80cfd41406ca0c828dfc43fc0f0.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u7f13\u5b58\u5316\u7ebf\u7a0b\u6c60\uff0c\u6ca1\u6709\u6838\u5fc3\u7ebf\u7a0b\uff0c\u6267\u884c\u4efb\u52a1\u90fd\u662f\u901a\u8fc7\u6551\u6025\u7ebf\u7a0b\u3002\u5f53\u6ca1\u6709\u7ebf\u7a0b\u53ef\u4ee5\u6267\u884c\u4efb\u52a1\u65f6\u5c31\u4f1a\u521b\u5efa\u6551\u6025\u7ebf\u7a0b\uff0c\u53ef\u4ee5\u7075\u6d3b\u7684\u63a7\u5236\u7ebf\u7a0b\u7684\u4e2a\u6570\uff0c\u5e76\u4e14\u5835\u585e\u961f\u5217\u4e2d\u662f\u4e0d\u5b58\u4efb\u52a1\u7684\u3002\u9002\u7528\u4e8e\u4efb\u52a1\u6570\u6bd4\u8f83\u5bc6\u96c6\uff0c\u4efb\u52a1\u6267\u884c\u65f6\u95f4\u77ed\u7684\u65f6\u5019\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\2dff6635856614235dee0ee0cb1c74d2.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\2dff6635856614235dee0ee0cb1c74d2.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"2099af07ef684a65a2edfd02647bc0a3.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u8ba1\u5212\u7ebf\u7a0b\u6c60\uff0c\u53ef\u4ee5\u6267\u884c\u5ef6\u8fdf\u4efb\u52a1\u7684\u7ebf\u7a0b\u6c60\uff0c\u6309\u5468\u671f\u53bb\u6267\u884c\u4efb\u52a1\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\89998105a7ace433c27dc1993b2ebfb5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\89998105a7ace433c27dc1993b2ebfb5.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"76535cd44ded4b22b9ff983ce5ed522f.png\"\/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\1438a03970bf76a40696a3740a5bac65.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\1438a03970bf76a40696a3740a5bac65.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"2617112ca1194402be1fb5b0ac4e2d87.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4e3a\u4ec0\u4e48\u4e0d\u63a8\u8350\u9002\u7528Executor\u521b\u5efa\u7ebf\u7a0b\u6c60\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.Executor\u521b\u5efa\u7684 \u56fa\u5b9a\u7ebf\u7a0b\u6570\u7684\u7ebf\u7a0b\u6c60\u548c\u5355\u7ebf\u7a0b\u7684\u7ebf\u7a0b\u6c60\u4f7f\u7528\u7684\u5835\u585e\u961f\u5217\u90fd\u662fLinkedBlockQueue\uff0c\u5e76\u4e14\u5176\u521d\u59cb\u5316\u957f\u5ea6\u4e3aInteger.MAX_VALUE\uff0c\u4e5f\u5c31\u662f\u65e0\u754c\u7684\u3002\u4f1a\u51fa\u73b0MMO\u7684\u60c5\u51b5\uff08\u5185\u5b58\u6ea2\u51fa\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.Executor\u521b\u5efa\u7684\u7f13\u5b58\u5316\u7ebf\u7a0b\u6c60\u7684\u7ebf\u7a0b\u603b\u6570Integer.MAX_VALUE\uff0c\u4f1a\u51fa\u73b0MMO\u7684\u60c5\u51b5\uff08\u5185\u5b58\u6ea2\u51fa\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6240\u4ee5\u5728\u5f00\u53d1\u65f6\u63a8\u8350\u4f7f\u7528 ThreadPoolExecutor\u6765\u521b\u5efa\u7ebf\u7a0b\u6c60\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u5177\u4f53\u7684\u53c2\u6570\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4f60\u7684\u9879\u76ee\u4e2d\u6709\u7528\u5230\u7ebf\u7a0b\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u6279\u91cf\u5bfc\u5165\uff1a\u5982\u679c\u6570\u636e\u91cf\u8fc7\u5927\u65f6\uff0c\u6211\u4eec\u76f4\u63a5\u4e00\u6b21\u6027\u5bfc\u5165\u4f1a\u5bfc\u81f4MMO\u7684\u95ee\u9898\u3002\u53ef\u4ee5\u4f7f\u7528\u7ebf\u7a0b\u6c60 + CountDownLatch\u6765\u5b9e\u73b0\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5f02\u6b65\u7ebf\u7a0b\uff1a\u4e3a\u4e86\u907f\u514d\u4e0a\u4e00\u4e2a\u65b9\u6cd5\u7684\u8fd0\u884c\u5f71\u54cd\u5f53\u524d\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4f7f\u7528\u7ebf\u7a0b\u6c60\u6765\u6267\u884c\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u6548\u7387\uff0c\u4ece\u4e32\u884c\u5173\u7cfb\u53d8\u4e3a\u5e76\u884c\u5173\u7cfb\u3002\uff08\u53ef\u4ee5\u8bf4\u8bf4\u7528\u6237\u4e0b\u5355\u7684\u6a21\u5757\uff0c\u901a\u77e5\u5feb\u9012\u5458\u53d6\u4ef6\u8fd9\u4e2a\u6d41\u7a0b\uff0c\u53ef\u4ee5\u8bf4\u5728\u5f00\u59cb\u7684\u65f6\u5019\u4f7f\u7528\u5f02\u6b65\u7ebf\u7a0b\u6765\u5b9e\u73b0\uff0c\u4f46\u662f\u6548\u7387\u8fd8\u662f\u592a\u4f4e\u4e86\uff0c\u6700\u540e\u4f7f\u7528MQ\u6765\u5b9e\u73b0\u5f02\u6b65\u3002\u6709\u6d88\u8d39\u8005\u786e\u8ba4\u673a\u5236\uff0c\u5982\u679c\u6d88\u8d39\u5931\u8d25\u4e5f\u5c31\u662f\u8fd4\u56denack\uff0c\u6d88\u606f\u4f1a\u8fd4\u56de\u6d88\u606f\u961f\u5217\u4e2d\u7684\u539f\u6765\u4f4d\u7f6e\u4e0a\uff0c\u53ef\u4ee5\u8fdb\u884c\u91cd\u8bd5\uff0c\u8fd9\u662f\u591a\u7ebf\u7a0b\u5b9e\u73b0\u5f02\u6b65\u6ca1\u6709\u7684\uff0c\u8fd9\u662f\u6211\u4eec\u9879\u76ee\u4e2d\u4f7f\u7528mq\u5b9e\u73b0\u5f02\u6b65\u8c03\u7528\u7684\u539f\u56e0\uff09<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u5982\u4f55\u63a7\u5236\u67d0\u4e2a\u65b9\u6cd5\u5141\u8bb8\u5e76\u53d1\u8bbf\u95ee\u7684\u7ebf\u7a0b\u6570\u91cf\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u591a\u7ebf\u7a0b\u4e2d\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5de5\u5177\u7c7b Semaphore\uff0c\u53ef\u4ee5\u63a7\u5236\u5e76\u53d1\u8bbf\u95ee\u7684\u7ebf\u7a0b\u6570\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u521b\u5efa\u4e00\u4e2aSemaphore\uff0c\u9700\u8981\u56fa\u5b9a\u4fe1\u53f7\u91cf\u7684\u5927\u5c0f\u8fdb\u884c\u521d\u59cb\u5316\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u6bcf\u6b21\u8bf7\u6c42\u83b7\u53d6\u7ebf\u7a0b\u7684\u65f6\u5019\u8c03\u7528acquire\u65b9\u6cd5\uff0c\u4fe1\u53f7\u91cf- 1\u3002\uff08\u5982\u679c\u6ca1\u6709\u4fe1\u53f7\u91cf\u4e86\uff0c\u8bf7\u6c42\u5c31\u4e0d\u80fd\u8fdb\u884c\u8bbf\u95ee\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u6bcf\u6b21\u8bf7\u6c42\u4f7f\u7528\u5b8c\u7ebf\u7a0b\u540e\u8981\u8c03\u7528release\u65b9\u6cd5\uff0c\u4fe1\u53f7\u91cf + 1\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u8c08\u8c08\u4f60\u5bf9ThreadLocal\u7684\u7406\u89e3\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4f5c\u7528<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u5b9e\u73b0\u8d44\u6e90\u7684\u7ebf\u7a0b\u9694\u79bb\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u4f7f\u7528\u81ea\u5df1\u7684\u8d44\u6e90\uff0c\u907f\u514d\u7ebf\u7a0b\u5b89\u5168\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5b9e\u73b0\u539f\u7406<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728ThreadLocal\u4e2d\u5b58\u50a8\u6570\u636e\u7684\u5c5e\u6027\u5c31\u662fThreadLocalMap\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">set\u65b9\u6cd5\uff1a\u4f20\u5165\u4e00\u4e2a\u6570\u636e\uff0c\u4f7f\u7528\u8be5\u6570\u636e\u4f5c\u4e3aValue\uff0c\u4f7f\u7528\u5f53\u524d\u7ebf\u7a0b\u4f5c\u4e3aKey\u3002\u5728\u7b2c\u4e00\u6b21\u6dfb\u52a0\u6570\u636e\u7684\u65f6\u5019\u4f1a\u521d\u59cb\u5316ThreadLocalMap\u5927\u5c0f\u4e3a16\uff0c\u63d0\u4f9b\u53d6\u6a21\u7684\u65b9\u5f0f\u5b58\u50a8\u5bf9\u5e94\u7684\u6570\u636e\u3002\uff08\u4f7f\u7528\u7684\u662f\u4e0e\u8fd0\u7b97\u7b49\u4ef7\u4e8e\u53d6\u6a21\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">get\u65b9\u6cd5\uff1a\u4f7f\u7528\u5f53\u524d\u7ebf\u7a0b\u4f5c\u4e3aKey\uff0c\u901a\u8fc7\u53d6\u6a21\u7684\u65b9\u5f0f\u83b7\u53d6ThreadLocalMap\u4e2d\u5bf9\u5e94\u7d22\u5f15\u4e0b\u6807\u7684\u6570\u636e\u3002\uff08\u4f7f\u7528\u7684\u662f\u4e0e\u8fd0\u7b97\u7b49\u4ef7\u4e8e\u53d6\u6a21\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">remove\u65b9\u6cd5\uff1a\u4f7f\u7528\u5f53\u524d\u7ebf\u7a0b\u4f5c\u4e3aKey\uff0c\u901a\u8fc7\u53d6\u6a21\u7684\u65b9\u9762\u786e\u5b9aThreaadLocalMap\u4e2d\u7684\u5b58\u50a8\u4f4d\u7f6e\uff0c\u5c06\u5176\u4e2d\u7684\u6570\u636e\u6e05\u9664\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u6709\u4e86\u89e3\u8fc7ThreadLocal\u5185\u5b58\u6cc4\u6f0f\u7684\u95ee\u9898\u5417\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ThreadLocalMap\u4e2d\u7684\u6bcf\u4e00\u9879\u7684\u7c7b\u578b\u662fEntry\u90fd\u662f\u865a\u5f15\u7528\uff0ckey\u662f\u5f31\u5f15\u7528\uff0c\u5728\u5185\u5b58\u4e0d\u591f\u7684\u65f6\u5019\u4f1a\u88ab\u91ca\u653e\uff0c\u800cValue\u662f\u5f3a\u5f15\u7528\uff0c\u4e0d\u4f1a\u88ab\u91ca\u653e\u3002\u6240\u4ee5\u5f53key\u88abGC\u91ca\u653e\u5185\u5b58\u65f6\uff0cvalue\u4e0d\u4f1a\u88ab\u91ca\u653e\uff0c\u6700\u7ec8\u5bfc\u81f4\u5185\u5b58\u6cc4\u6f0f\u3002\u6240\u4ee5\u5728\u4f7f\u7528ThreadLocal\u65f6\uff0c\u8981\u4f7f\u7528remove\u65b9\u6cd5\u81ea\u52a8\u91ca\u653ekey\u548cvalue\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\63b8e657af783ff10a2882c21ba6f56e.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\63b8e657af783ff10a2882c21ba6f56e.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"ab0a7650cd5c4a76a8e756db858166cd.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">JVM<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee \uff1a\u4ec0\u4e48\u662f\u7a0b\u5e8f\u8ba1\u6570\u5668\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u7ebf\u7a0b\u662f\u79c1\u6709\u7684\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u4e00\u4e2a\u7a0b\u5e8f\u8ba1\u6570\u5668\u3002\u7a0b\u5e8f\u8ba1\u6570\u5668\u4f1a\u5b58\u50a8class\u5b57\u8282\u7801\u4e2d\u6b63\u5728\u6267\u884c\u7684\u6307\u4ee4\u7684\u5730\u5740\uff08\u7c7b\u662f\u504f\u79fb\u91cf\u3002\u5728class\u5b57\u8282\u7801\u4e2d\uff0c\u6e90\u7801\u4f1a\u88ab\u5206\u6210\u591a\u4e2a\u6307\u4ee4\u6267\u884c\uff09\u3002\u5728\u4e0b\u6b21\u83b7\u53d6CPU\u4f7f\u7528\u6743\u65f6\uff0c\u5c31\u4f1a\u4ece\u8be5\u6307\u4ee4\u7ee7\u7eed\u6267\u884c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7 javap -v xx.class\uff0c\u5c31\u53ef\u4ee5\u6253\u5370class\u5b57\u8282\u7801\u7684\u4fe1\u606f\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4f60\u80fd\u7ed9\u6211\u8be6\u7ec6\u7684\u8bb2\u4e00\u4e0bjava\u7684\u5806\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.java\u7684\u5806\u662f\u7ebf\u7a0b\u5171\u4eab\u533a\u57df\uff0c\u5b58\u50a8\u5bf9\u8c61\u5b9e\u4f8b\u548c\u6570\u7ec4\uff0c\u5f53\u7a7a\u95f4\u4e0d\u8db3\u7684\u65f6\u5019\u4f1a\u62a5OOM\u5f02\u5e38\uff08OutOfMemoryError\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.java\u7684\u5806\u5206\u4e3a\u4e24\u4e2a\u90e8\u5206\uff1a\u65b0\u751f\u4ee3\u548c\u8001\u5e74\u4ee3\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u65b0\u751f\u4ee3\uff1a\u5305\u542b\u4e09\u4e2a\u90e8\u5206\uff0c\u4e00\u4e2aEden\u533a\u5b58\u50a8\u65b0\u5efa\u7684\u5bf9\u8c61\uff0c\u4e24\u4e2a\u5e78\u5b58\u8005\u533a\u5b58\u50a8\u751f\u547d\u5468\u671f\u77ed\u7684\u5bf9\u8c61\u3002<\/li>\n\n\n\n<li>\u8001\u5e74\u4ee3\uff1a\u5b58\u50a8\u751f\u547d\u5468\u671f\u957f\u7684\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u8bf4\u8bf4JDK1.7\u548cJDK1.8\u4e2djava\u5806\u7684\u533a\u522b\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u57281.7\u4e4b\u524d\u6808\u4e2d\u8fd8\u6709\u6c38\u4e45\u4ee3\u7684\u90e8\u5206\uff0c\u5b58\u50a8 \u7c7b\u7684\u4fe1\u606f\uff0c\u9759\u6001\u53d8\u91cf\uff0c\u5e38\u91cf\uff0c\u7f16\u8bd1\u540e\u7684\u4ee3\u7801\u7b49\u7b49\u3002\u4e3a\u4e86\u964d\u4f4e\u53d1\u751fOOM\u7684\u53ef\u80fd\u6027\uff0c\u57281.8\u540e\u5c06\u8fd9\u4e9b\u6570\u636e\u5b58\u50a8\u5230\u672c\u5730\u5185\u5b58\u7684\u5143\u7a7a\u95f4\u91cc\uff0c\u79fb\u9664\u4e86\u6c38\u4e45\u4ee3\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\7fbb02f1418aba2cdcc1cef24b453a70.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\7fbb02f1418aba2cdcc1cef24b453a70.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"3140bdc0603d4ecc898ec0d79331eaaf.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4ec0\u4e48\u662f\u865a\u62df\u673a\u6808\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u865a\u62df\u673a\u6808\u662f\u5b58\u50a8\u5c40\u90e8\u53d8\u91cf\u548c\u8c03\u7528\u65b9\u6cd5\u7684\u5185\u5b58\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5728\u4e00\u4e2a\u6808\u4e2d\u4f1a\u5305\u542b\u591a\u4e2a\u6808\u5e27\uff0c\u6bcf\u4e2a\u6808\u5e27\u8868\u793a\u8c03\u7528\u65b9\u6cd5\u6240\u5360\u7528\u7684\u5185\u5b58\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u6bcf\u4e2a\u6808\u53ea\u6709\u4e00\u4e2a\u6d3b\u8dc3\u7684\u6808\u5e27\uff0c\u8868\u793a\u5f53\u524d\u7684\u8c03\u7528\u7684\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u5783\u573e\u56de\u6536\u662f\u5426\u6d89\u53ca\u6808\u5185\u5b58\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5783\u573e\u56de\u6536\u4e3b\u8981\u5806\u5185\u5b58\uff0c\u800c\u6808\u5e27\u4f1a\u5728\u6bcf\u6b21\u5f39\u51fa\u7684\u65f6\u5019\u91ca\u653e\u5185\u5b58\uff0c\u6240\u4ee5\u4e0d\u6d89\u53ca\u5783\u573e\u56de\u6536\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u65b9\u6cd5\u5185\u7684\u5c40\u90e8\u53d8\u91cf\u662f\u5426\u7ebf\u7a0b\u5b89\u5168\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5982\u679c\u5c40\u90e8\u53d8\u91cf\u6ca1\u6709\u9003\u79bb\u65b9\u6cd5\u7684\u4f5c\u7528\u8303\u56f4\u65e7\u4e0d\u9700\u8981\u8003\u8651\u7ebf\u7a0b\u5b89\u5168\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5982\u679c\u5c40\u90e8\u53d8\u91cf\u5f15\u7528\u4e86\u5916\u90e8\u5bf9\u8c61\u4e14\u8981\u9003\u79bb\u65b9\u6cd5\u7684\u4f5c\u7528\u8303\u56f4\u65f6\u5c31\u9700\u8981\u8003\u8651\u7ebf\u7a0b\u5b89\u5168\u7684\u95ee\u9898\u3002\uff08\u65b9\u6cd5\u4f20\u5165\u5bf9\u8c61\u5f15\u7528\u548c\u8fd4\u56de\u65b9\u6cd5\u8fd4\u56de\u7684\u5bf9\u8c61\uff0c\u8fd9\u4e9b\u5bf9\u8c61\u53ef\u80fd\u90fd\u4f1a\u88ab\u5176\u4ed6\u7ebf\u7a0b\u4fee\u6539\uff0c\u5c31\u4f1a\u6709\u7ebf\u7a0b\u5b89\u5168\u7684\u95ee\u9898\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u6808\u5185\u5b58\u5206\u914d\u8d8a\u5927\u8d8a\u597d\u5417\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9ed8\u8ba4\u6bcf\u4e2a\u6808\u5e27\u7684\u5927\u5c0f\u4e3a1M\uff0c\u5982\u679c\u6269\u5927\u6808\u5e27\u7684\u5927\u5c0f\uff0c\u5c31\u4f1a\u5bfc\u81f4\u53ef\u7528\u7ebf\u7a0b\u6570\u51cf\u5c0f\u3002<\/p>\n\n\n\n<p 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class=\"wp-block-paragraph\">4.\u89e3\u6790\uff1a\u5c06\u7c7b\u4e2d\u6307\u4ee4\u7684\u7b26\u53f7\u5f15\u7528\u8f6c\u6362\u4e3a\u76f4\u63a5\u5f15\u7528\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5.\u521d\u59cb\u5316\uff1a\u5bf9\u9759\u6001\u53d8\u91cf\u548c\u9759\u6001\u5757\u521d\u59cb\u5316\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">6.\u4f7f\u7528\uff1ajvm\u53bb\u6267\u884c\u7a0b\u5e8f\u4ee3\u7801\uff0c\u5c31\u6bd4\u5982\uff1anew\u5bf9\u8c61\uff0c\u548c\u8c03\u7528\u9759\u6001\u65b9\u6cd5\u7b49\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">7.\u5378\u8f7d\uff1a\u5f53\u7a0b\u5e8f\u4ee3\u7801\u6267\u884c\u5b8c\u4e4b\u540e\uff0cjvn\u5c31\u4f1a\u9500\u6bc1class\u5bf9\u8c61\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\af48503dd5c4161a7abfa4ac853f961e.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\af48503dd5c4161a7abfa4ac853f961e.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"e76c4ffa8db0429aa6db0bd84f64c108.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1ajvm\u52a0\u8f7dclass\u7684\u65f6\u5019\uff0cclass\u7684\u5378\u8f7d\u6761\u4ef6\u662f\u4ec0\u4e48\uff1f\uff08\u53ef\u4ee5\u9009\u62e9\u56de\u6536\uff0c\u4f46\u4e0d\u662f\u5fc5\u987b\u56de\u6536\uff09<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u7c7b\u7684\u5b9e\u4f8b\u88ab\u5168\u90e8\u56de\u6536\uff1a\u8be5\u7c7b\u7684\u6240\u6709\u5b9e\u4f8b\u6ca1\u6709\u5f15\u7528\u4e14\u88ab\u5168\u90e8\u56de\u6536\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u7c7b\u52a0\u8f7d\u5668\u6ca1\u6709\u88ab\u5f15\u7528\u7684\u65f6\u5019\uff1a\u5728\u4efb\u4f55\u7684\u6d3b\u52a8\u7ebf\u7a0b\u4e2dClassLoader\u90fd\u6ca1\u6709\u88ab\u5f15\u7528\u3002<br>3.\u7c7b\u672c\u8eab\u6ca1\u6709\u88ab\u5f15\u7528\uff1a\u7c7b\u7684\u5b9e\u4f8b\u5bf9\u8c61\u548c\u9759\u6001\u5c5e\u6027\u6ca1\u6709\u88ab\u4efb\u4f55\u6d3b\u52a8\u7684\u7ebf\u7a0b\u5f15\u7528\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u5bf9\u8c61\u4ec0\u4e48\u65f6\u5019\u4f1a\u88ab\u5783\u573e\u56de\u6536\u5668\u56de\u6536\uff1f\uff08\u5783\u573e\u5b9a\u4f4d\u7684\u65b9\u6cd5\u6709\u54ea\u4e9b\uff1f\uff09<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u4e00\u4e2a\u5bf9\u8c61\u6ca1\u6709\u88ab\u4efb\u4f55\u7684\u5f15\u7528\uff0c\u5c31\u4f1a\u88ab\u89c6\u4e3a\u5783\u573e\uff0c\u901a\u8fc7\u5bf9\u8be5\u5783\u573e\u5b9a\u4f4d\u7136\u540e\u901a\u8fc7\u5783\u573e\u56de\u6536\u5668\u8fdb\u884c\u56de\u6536\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9a\u4f4d\u5783\u573e\u7684\u65b9\u6cd5\u6709\u4e24\u79cd\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5f15\u7528\u8ba1\u6570\u5668\uff1a\u6bcf\u4e2a\u5bf9\u8c61\u90fd\u6709\u8be5\u8ba1\u6570\u5668\uff0c\u5728\u88ab\u5f15\u7528\u7684\u65f6\u5019\u8ba1\u6570\u5668\u5c31\u4f1a+1\uff0c\u5f53\u8ba1\u6570\u5668\u503c\u4e3a0\u5c31\u88ab\u5b9a\u4f4d\u4e3a\u5783\u573e\u8fdb\u884c\u56de\u6536\u3002\u4f46\u662f\u5982\u679c\u4fe9\u4e2a\u5bf9\u8c61\u76f8\u4e92\u4f9d\u8d56\u5c31\u4f1a\u5bfc\u81f4\u5b9a\u4f4d\u5931\u8d25\u3002<\/p>\n\n\n\n<p 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class=\"wp-block-paragraph\">\u7b5b\u9009\uff1a\u5728\u6807\u8bb0\u7684\u5bf9\u8c61\u4e2d\u7b5b\u9009\u51fa\u5fc5\u987b\u6267\u884cfinalize\u7684\u5bf9\u8c61\uff0c\u5e76\u5c06\u8fd9\u4e9b\u5bf9\u8c61\u5b58\u50a8\u5230F-queue\u961f\u5217\u4e2d\uff0c\u8fd9\u91cc\u9700\u8981\u6ce8\u610f\u7684\u5c31\u662f 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class=\"wp-block-paragraph\">1.\u6808\u5e27\u4e2d\u672c\u5730\u53d8\u91cf\u7684\u5f15\u7528\u5bf9\u8c61\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u65b9\u6cd5\u533a\u4e2d\u7c7b\u7684\u9759\u6001\u5c5e\u6027\u7684\u5f15\u7528\u5bf9\u8c61\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u65b9\u6cd5\u533a\u4e2d\u5e38\u91cf\u7684\u5f15\u7528\u5bf9\u8c61\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aJVM\u7684\u5783\u573e\u56de\u6536\u7b97\u6cd5\u6709\u54ea\u4e9b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u6807\u8bb0\u6e05\u9664\u7b97\u6cd5\uff1a\u901a\u8fc7GC Root\u5b9a\u4f4d\u51fa\u5b58\u6d3b\u5bf9\u8c61\u7684\u4f4d\u7f6e\uff0c\u5e76\u5c06\u5783\u573e\u56de\u6536\u3002\u7f3a\u70b9\uff1a\u4f1a\u5bfc\u81f4\u5b58\u50a8\u7a7a\u95f4\u788e\u7247\u5316\uff0c\u4e25\u91cd\u65f6\u521b\u5efa\u4e0d\u4e86\u5927\u6570\u7ec4\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\5648b4f2114ce03da9937a60fbec9317.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\5648b4f2114ce03da9937a60fbec9317.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"ef61cb8a80784ba19d6f1008fc8757a2.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u6807\u8bb0\u6574\u7406\u7b97\u6cd5\uff1a\u4e5f\u662f\u901a\u8fc7GC 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src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"a524104e61dd48a8a7ca0064b10e70a1.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u590d\u5236\u7b97\u6cd5\uff1a\u5185\u5b58\u4f1a\u88ab\u5206\u4e3a\u4e24\u4e2a\u90e8\u5206\uff0c\u4e00\u4e2a\u90e8\u5206\u7528\u6765\u5b58\u50a8\u5bf9\u8c61\uff0c\u901a\u8fc7\u53ef\u8fbe\u6027\u5206\u6790\u7b97\u6cd5\u786e\u5b9a\u5b58\u6d3b\u5bf9\u8c61\u7684\u4f4d\u7f6e\uff0c\u5c06\u666e\u901a\u7684\u5bf9\u8c61\u590d\u5236\u5230\u53e6\u4e00\u90e8\u5206\u4e2d\uff0c\u7136\u540e\u5c06\u8be5\u90e8\u5206\u5185\u5b58\u4e2d\u7684\u5bf9\u8c61\u5168\u90e8\u56de\u6536\u3002\u4f18\u70b9\uff1a\u6548\u7387\u9ad8\u3002\u7f3a\u70b9\uff1a\u5185\u5b58\u4f7f\u7528\u7387\u4f4e\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\d00b6cebbac946aba50eab05e291e0c0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\d00b6cebbac946aba50eab05e291e0c0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"a645fb079df04bbbaa692edba4470bbe.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u8bf4\u8bf4JVM\u5206\u4ee3\u56de\u6536\u5427\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u533a\u57df\u5212\u5206<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5728\u5806\u4e2d\u5206\u4e3a\u4e24\u4e2a\u90e8\u5206 \u65b0\u751f\u4ee3 + \u8001\u5e74\u4ee3\u3002\uff081\uff1a2\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5728\u65b0\u751f\u4ee3\u4e2d\u5206\u4e3a\u4e09\u4e2a\u90e8\u5206 Eden\u533a + from\u5e78\u5b58\u8005\u533a + to\u5e78\u5b58\u8005\u533a\u3002\uff088\uff1a1\uff1a1\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56de\u6536\u7b56\u7565<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5f53Eden\u4e2d\u7684\u5185\u5b58\u4e0d\u8db3\u7684\u65f6\u5019\uff0c\u4f1a\u67e5\u8be2\u51faEden\u533a\u548cfrom\u533a\u7684\u5b58\u6d3b\u5bf9\u8c61\uff0c\u5e76\u901a\u8fc7\u590d\u5236\u7b97\u6cd5\u5c06\u5b58\u6d3b\u5bf9\u8c61\u590d\u5236\u5230to\u533a\u4e2d\uff0c\u5e76\u5c06Eden\u548cfrom\u4e2d\u7684\u5bf9\u8c61\u91ca\u653e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5f53\u4e0b\u6b21Eden\u4e2d\u7684\u5185\u5b58\u4e0d\u8db3\u7684\u65f6\u5019\uff0c\u4f1a\u67e5\u8be2\u51faEden\u533a\u548cto\u533a\u7684\u5b58\u6d3b\u5bf9\u8c61\uff0c\u5e76\u63d0\u4f9b\u590d\u5236\u7b97\u6cd5\u5c06\u5b58\u6d3b\u7684\u5bf9\u8c61\u590d\u5236\u5230from\u533a\u4e2d\uff0c\u5e76\u5c06Eden\u548cto\u4e2d\u7684\u5bf9\u8c61\u91ca\u653e\u3002\uff081\uff0c2\u8fdb\u884c\u5faa\u73af\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u5f53\u5e78\u5b58\u8005\u533a\u4e2d\u7684\u5bf9\u8c61\u590d\u5236\u6b21\u6570\u5927\u4e8e15\u6b21\uff08\u664b\u5347\u9608\u503c\uff09\u540e\u5c31\u4f1a\u664b\u5347\u5230\u8001\u5e74\u4ee3\u4e2d\uff0c\u5f53\u65b0\u751f\u4ee3\u5185\u5b58\u4e0d\u591f\u7684\u65f6\u5019\u4e5f\u4f1a\u5c06\u5bf9\u8c61\u664b\u5347\u5230\u8001\u5e74\u4ee3\u4e2d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1aMinorGC\uff0cMixedGC\uff0cFullGC\u7684\u533a\u522b\u662f\u4ec0\u4e48\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MinorGC\uff1a\u53d1\u751f\u5728\u65b0\u751f\u4ee3\u7684\u5783\u573e\u56de\u6536\u3002\u505c\u6b62\u65f6\u95f4\u77ed\uff08STW\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MixedGC\uff1a\u53d1\u751f\u5728\u65b0\u751f\u4ee3\u548c\u8001\u5e74\u4ee3\u7684\u90e8\u5206\u533a\u57df\u7684\u5783\u573e\u56de\u6536\u3002G1\u6536\u96c6\u5668\u662f\u7279\u6709\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">FullGC\uff1a\u53d1\u751f\u5728\u65b0\u751f\u4ee3\u548c\u8001\u5e74\u4ee3\u5b8c\u6574\u7684\u5783\u573e\u56de\u6536\u3002\u505c\u6b62\u65f6\u95f4\u957f\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u8bf4\u4e00\u4e0bJVM\u6709\u54ea\u4e9b\u5783\u573e\u56de\u6536\u5668\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u4e32\u884c\u5783\u573e\u56de\u6536\u5668\uff1aSerial GC(\u4f5c\u7528\u4e8e\u65b0\u751f\u4ee3)\uff0cSerial Old GC(\u4f5c\u7528\u4e8e\u8001\u5e74\u4ee3)\uff0c\u7531\u4e00\u4e2a\u7ebf\u7a0b\u8fdb\u884c\u5783\u573e\u56de\u6536\uff0c\u5176\u4ed6\u7ebf\u7a0b\u5904\u4e8e\u5835\u585e\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\0ec4433ab9770239bebc92c54a42ac46.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\0ec4433ab9770239bebc92c54a42ac46.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"27570c6d663140febbb4d4d0962b9cc4.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5e76\u884c\u5783\u573e\u56de\u6536\u5668\uff1aParallel Old GC(\u4f5c\u7528\u4e8e\u8001\u5e74\u4ee3)\uff0cPar New GC(\u4f5c\u7528\u4e8e\u65b0\u751f\u4ee3)\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\6816df047c279598b1ef28d17b0c619a.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\6816df047c279598b1ef28d17b0c619a.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"d3c8d46904b449fdad8214ebbc6b2405.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">3.CMS(\u5e76\u53d1)\u5783\u573e\u56de\u6536\u5668\uff1aCMS GC(\u4f5c\u7528\u4e8e\u8001\u5e74\u4ee3)\uff0c\u901a\u8fc7\u521d\u59cb\u6807\u8bb0\uff0c\u5e76\u53d1\u6807\u8bb0\uff0c\u91cd\u65b0\u6807\u8bb0\uff08\u4fdd\u8bc1\u6700\u7ec8\u6807\u8bb0\u7684\u662f\u6709\u6548\u7684\u5783\u573e\uff09\u5b9e\u73b0\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\0226e6e8e73097640305c548e5c6ec2f.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\0226e6e8e73097640305c548e5c6ec2f.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"27a4540662d24b2d9477453e85f61f7c.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u521d\u59cb\u6807\u8bb0\uff1a\u5c06GCRoot\u7684\u6839\u8282\u70b9\u5bf9\u5e94\u7684\u76f4\u63a5\u5b50\u8282\u70b9\u8fdb\u884c\u6807\u8bb0\uff0c\u8be5\u8fc7\u7a0b\u662f\u5355\u7ebf\u7a0b\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e76\u53d1\u6807\u8bb0\uff1a\u904d\u5386GCRoot\u4e2d\u53ef\u5230\u8fbe\u7684\u6240\u6709\u8282\u70b9\uff0c\u5e76\u505a\u6807\u8bb0\uff0c\u5e76\u4e14\u5728\u8be5\u8fc7\u7a0b\u4e2d\u7528\u6237\u7ebf\u7a0b\u662f\u53ef\u4ee5\u8fdb\u884c\u64cd\u4f5c\u7684\uff0c\u7528\u6237\u7ebf\u7a0b\u7684\u64cd\u4f5c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6807\u8bb0\u53d1\u751f\u53d8\u52a8\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u91cd\u65b0\u6807\u8bb0\uff1a\u53d1\u751f\u5728\u5e76\u53d1\u6807\u8bb0\u671f\u95f4\uff0c\u5c31\u662f\u5c06\u90a3\u4e9b\u7528\u6237\u64cd\u4f5c\u5230\u5bfc\u81f4\u6807\u8bb0\u53d1\u751f\u6539\u53d8\u7684\u8282\u70b9\u8fdb\u884c\u6807\u8bb0\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e76\u53d1\u6e05\u7406\uff1a\u5c06\u6807\u8bb0\u5224\u65ad\u4e3a\u5783\u573e\u7684\u5bf9\u8c61\u8fdb\u884c\u56de\u6536\uff0c\u4e14\u8be5\u8fc7\u7a0b\u7528\u6237\u7ebf\u7a0b\u4e5f\u662f\u53ef\u4ee5\u8fdb\u884c\u64cd\u4f5c\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.G1\u5783\u573e\u6536\u96c6\u5668\uff0c\u4f5c\u7528\u4e8e\u8001\u5e74\u4ee3\u548c\u65b0\u751f\u4ee3\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aCMS\u5783\u573e\u56de\u6536\u5668\u6709\u4ec0\u4e48\u7f3a\u70b9\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5728CMS\u4e2d\u5bf9\u5e94\u7684\u56de\u6536\u7ebf\u7a0b\u7684\u6bd4\u4f8b\u4e3a\uff08\u5904\u7406\u5668\u6838\u5fc3\u4e2a\u6570+3\uff09\/4\uff0c\u7ea6\u5360\u752825%\u7684\u8fd0\u7b97\u8d44\u6e90\uff0c\u5f53\u8fd0\u884c\u8d44\u6e90\u6bd4\u8f83\u5c11\u7684\u65f6\u5019\uff0c\u56fa\u5b9a\u670925%\u88ab\u56de\u6536\u7ebf\u7a0b\u5360\u7528\uff0c\u8fd9\u65f6\u7528\u6237\u7ebf\u7a0b\u7684\u6267\u884c\u901f\u5ea6\u5c31\u4f1a\u5927\u5927\u964d\u4f4e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5728\u5e76\u53d1\u6807\u8bb0\u548c\u5e76\u53d1\u56de\u6536\u7684\u8fc7\u7a0b\uff0c\u8be5\u8fc7\u7a0b\u7528\u6237\u7ebf\u7a0b\u90fd\u662f\u53ef\u4ee5\u8fdb\u884c\u64cd\u4f5c\u7684\uff0c\u7a0b\u5e8f\u8fd0\u884c\u5c31\u4f1a\u4ea7\u751f\u65b0\u7684\u5783\u573e\uff0c\u4f46\u662f\u6b64\u65f6\u5df2\u7ecf\u6807\u8bb0\u5b8c\u6210\u4e86\uff0c\u6240\u4ee5\u8fd9\u4e9b\u5783\u573e\u5c31\u4e0d\u4f1a\u88ab\u56de\u6536\u3002\uff08\u8be5\u5783\u573e\u79f0\u4e3a\u6d6e\u52a8\u5783\u573e\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u56e0\u4e3aCMS\u91c7\u7528\u6807\u8bb0\u6e05\u9664\u6cd5\uff0c\u6240\u4ee5\u5c31\u4f1a\u5b58\u5728\u788e\u7247\u5316\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u8bb2\u4e00\u4e0bG1\u5783\u573e\u56de\u6536\u5668\u5427\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.G1\u56de\u6536\u5668\u4f5c\u7528\u5728\u65b0\u751f\u4ee3\u548c\u8001\u5e74\u4ee3\uff0c\u5728JDK9\u4e2d\u662f\u9ed8\u8ba4\u7684\u5783\u573e\u56de\u6536\u5668\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5212\u5206\u4e86\u591a\u4e2a\u533a\u57df\uff0cEden\u533a\uff0c\u5e78\u5b58\u8005\u533a\uff0c\u8001\u5e74\u4ee3\u533a\uff0c\u5de8\u578b\u533a(humongous)\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u5e38\u7528\u590d\u5236\u7b97\u6cd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.G1\u56de\u6536\u5668\u5206\u4e3a\u4e09\u4e2a\u9636\u6bb5\uff1a\u65b0\u751f\u4ee3\u56de\u6536\uff08\u6709STW\uff09\uff0c\u5e76\u53d1\u6807\u8bb0\uff08\u91cd\u65b0\u6807\u8bb0\u4e2d\u6709STW\uff09\uff0c\u6df7\u5408\u6807\u8bb0\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u89e3\u91ca\u4e00\u4e0b\u8fd9\u4e09\u4e2a\u9636\u6bb5\u5427\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u65b0\u751f\u4ee3\u56de\u6536\uff1aEden\u533a\u6ee1\u4e4b\u540e\uff085%\uff09\uff0c\u5c31\u4f1a\u901a\u8fc7\u590d\u5236\u7b97\u6cd5\u5c06\u65b0\u751f\u4ee3\u5b58\u5728\u7684\u5bf9\u8c61\u5b58\u50a8\u5230\u65b0\u7684\u5e78\u5b58\u8005\u533a\u4e2d\uff0c\u7136\u540e\u91ca\u653eEden\u548c\u65e7\u5e78\u5b58\u8005\u533a\u7684\u5185\u5b58\u3002\uff08\u7c7b\u4f3c\u5206\u4ee3\u56de\u6536\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\6a0ab49315185e7f6d9d5d00ac007ee4.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\6a0ab49315185e7f6d9d5d00ac007ee4.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"635f777a7d7a40518d9b9630b8bc4e63.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e76\u53d1\u6807\u8bb0\uff1a\u6807\u8bb0\u90a3\u4e9b\u9700\u8981\u88ab\u56de\u6536\u7684\u8001\u5e74\u4ee3\uff08\u56e0\u4e3a\u662f\u5e76\u53d1\u6240\u4ee5\u4e0d\u4f1a\u6682\u505c\uff09\uff0c\u5728\u505a\u91cd\u65b0\u6807\u8bb0\u7684\u65f6\u5019\u4f1a\u77ed\u6682\u7684\u6682\u505c\uff0c\u4f18\u5148\u6807\u8bb0\u5bf9\u8c61\u5c11\u7684\u533a\u57df\u3002\uff08\u7c7b\u4f3c\u5e76\u53d1\u56de\u6536\u5668\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\e641dfc195eb9a39afc4341a7458179a.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\e641dfc195eb9a39afc4341a7458179a.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"13a469506cad40f18ddf76d8d4a19163.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6df7\u5408\u56de\u6536\uff1a\u5bf9\u65b0\u751f\u4ee3\u8fdb\u884c\u5783\u573e\u56de\u6536\uff0c\u5e76\u5c06\u6807\u8bb0\u7684\u8001\u5e74\u4ee3\uff08\u4f18\u5148\u6807\u8bb0\u90a3\u4e9b\u8001\u5e74\u4ee3\u4e2d\u6570\u636e\u8f83\u5c11\u7684\u8001\u5e74\u4ee3\uff09\u548c\u5e78\u5b58\u8005\u533a\u4e2d\u53ef\u664b\u5347\u7684\u65b0\u751f\u4ee3\u590d\u5236\u5230\u65b0\u7684\u8001\u5e74\u4ee3\u4e2d\uff0c\u5982\u679c\u8001\u5e74\u4ee3\u4e2d\u7684\u6570\u636e\u8fc7\u5927\u65f6\u5c31\u4f1a\u5c06\u5176\u590d\u5236\u5230humongous\u4e2d\uff0c\u6df7\u5408\u56de\u6536\u662f\u591a\u6b21\u6267\u884c\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\d3c56ca51da6872671858dd46b356dd5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\d3c56ca51da6872671858dd46b356dd5.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"0070bdbc0a14428aba4ef3ca2b390373.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u5f3a\u5f15\u7528\uff0c\u8f6f\u5f15\u7528\uff0c\u5f31\u5f15\u7528\uff0c\u865a\u5f15\u7528\u7684\u533a\u522b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5f3a\u5f15\u7528\uff1a\u80fd\u88abGCRoot\u627e\u5230\uff0c\u4e0d\u4f1a\u88ab\u56de\u6536\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u8f6f\u5f15\u7528\uff1a\u9700\u8981\u914d\u5408 SoftRefrence\u4f7f\u7528\uff0c\u5f53\u6211\u8fdb\u884c\u4e00\u6b21\u56de\u6536\u7684\u65f6\u5019\uff0c\u6b64\u65f6\u5185\u5b58\u8fd8\u662f\u4e0d\u8db3\uff0c\u4e3a\u4e86\u9632\u6b62oom\u5728\u7b2c\u4e8c\u6b21\u56de\u6536\u7684\u65f6\u5019\u5c31\u4f1a\u5c06\u8be5\u8f6f\u5f15\u7528\u8fdb\u884c\u56de\u6536\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u5f31\u5f15\u7528\uff1a\u9700\u8981\u914d\u5408WeakRefrence\u4f7f\u7528\uff0c\u4e3b\u8981\u88ab\u626b\u63cf\u5230\u4e86\u5c31\u4f1a\u8fdb\u884c\u56de\u6536\uff0c\u5c31\u662f\u5185\u5b58\u5145\u8db3\u7684\u60c5\u51b5\u4e0b\u3002\u89e3\u51b3ThreadLocal\u5185\u5b58\u6cc4\u6f0f\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u865a\u5f15\u7528\uff1a\u865a\u5f15\u7528\u867d\u7136\u662f\u5f15\u7528\uff0c\u4f46\u662f\u5462\u6211\u4eec\u83b7\u5f97\u4e0d\u5230\u5f15\u7528\u5bf9\u5e94\u7684\u6570\u636e\uff0c\u865a\u5f15\u7528\u4f1a\u5728\u8981\u88ab\u56de\u6536\u7684\u65f6\u5019\u53d1\u9001\u4e00\u4e2a\u7cfb\u7edf\u901a\u77e5\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4e00\u4e9b\u9500\u6bc1\u524d\u7684\u5de5\u4f5c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\ee5853fed48855b843a5ab9bc977a24d.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\ee5853fed48855b843a5ab9bc977a24d.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"043599ff0778432a9143b030df572b02.png\"\/><\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aThreadLocal\u4e3a\u4ec0\u4e48\u4f7f\u7528\u5f31\u5f15\u7528\u89e3\u51b3\u7f13\u5b58\u6cc4\u6f0f\u95ee\u9898\u5462\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u4eec\u4f7f\u7528\u5f31\u5f15\u7528\u4f5c\u4e3aThreadLocalMap\u4e2denrty\u7684key\uff0c\u5f53\u6211\u4eec\u8fdb\u884c\u5783\u573e\u56de\u6536\u7684\u65f6\u5019\uff0ckey\u5c31\u4f1a\u88ab\u56de\u6536\u5bfc\u81f4\u5185\u5b58\u6cc4\u6f0f\uff0c\u4f46\u662f\u5462\uff0c\u5373\u4f7f\u4f7f\u7528\u5f3a\u5f15\u7528\uff0c\u6211\u4eec\u5728\u5bf9key\u8bbe\u7f6e\u4e3anull\u7684\u65f6\u5019\u4e5f\u4f1a\u5bfc\u81f4\u5185\u5b58\u6cc4\u6f0f\u7684\u95ee\u9898\uff0c\u4f46\u662f\u5462\u5f31\u5f15\u7528\u53ef\u4ee5\u53ca\u65f6\u7684\u5783\u573e\u56de\u6536\uff0c\u5e76\u4e14\u5728set\u548cget\u65b9\u6cd5\u4e2d\u4f1a\u6709\u56de\u6536\u65e0\u6548key\u7684\u64cd\u4f5c\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aJVM\u7684\u8c03\u4f18\u53c2\u6570\u53ef\u4ee5\u5728\u54ea\u91cc\u8bbe\u7f6e\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5728war\u90e8\u7f72\u5230Tomcat\u65f6\u65f6\u5019\uff0c\u901a\u8fc7\/TOMCAT_HOME\/bin\/catanial.sh\u8fdb\u884c\u8bbe\u7f6e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5728\u90e8\u7f72jar\u5305\u7684\u65f6\u5019\u901a\u8fc7\u5728\u542f\u52a8\u6307\u4ee4\u4e0a\u8fdb\u884c\u8bbe\u7f6e\u3002\u5c31\u6bd4\u5982\uff1ajava -Xmas 100m -Xmax 1024m -jar xxx.jar\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1aJVM\u8c03\u4f18\u7684\u53c2\u6570\u6709\u54ea\u4e9b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u8bbe\u7f6e\u5806\u7684\u5927\u5c0f\u3002-Xmas -Xmax \uff1a\u8bbe\u7f6e\u5806\u7684\u521d\u59cb\u5927\u5c0f\u548c\u6700\u5927\u503c\uff0c\u521d\u59cb\u503c\u4e00\u822c\u4e3a\u7269\u7406\u5185\u5b58\u76841\/64\uff0c\u6700\u5927\u503c\u4e3a\u7269\u7406\u5185\u5b58\u76841\/4\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u8bbe\u7f6e\u865a\u62df\u6808\u7684\u5927\u5c0f\u3002-Xss 128k<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u8bbe\u7f6e\u5e74\u8f7b\u4ee3\u4e2dEden\u548c\u5e78\u5b58\u8005\u533a\u6bd4\u4f8b\u3002-XXsurvivorRatio = 8 \u4e5f\u5c31\u662f 8 : 1 : 1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u8bbe\u7f6e\u65b0\u751f\u4ee3\u664b\u5347\u8001\u5e74\u4ee3\u7684\u9608\u503c\u3002-XX:MaxTenuringThreshold \u9ed8\u8ba4\u4e3a15\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5.\u8bbe\u7f6e\u5783\u573e\u56de\u6536\u5668\u3002 -XX:+UseG1GC\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u8bf4\u4e00\u4e0bJVM\u7684\u8c03\u4f18\u5de5\u5177\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u547d\u4ee4\u5de5\u5177<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.jps\uff1a\u67e5\u8be2\u8fdb\u7a0b\u7684\u72b6\u6001\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.jstack\uff1a\u67e5\u770b\u7ebf\u7a0b\u7684\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.jmap\uff1a\u67e5\u770b\u5806\u8f6c\u7684\u4fe1\u606f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.jhat\uff1a\u5806\u8f6c\u50a8\u5feb\u7167\u5206\u6790\u5de5\u5177\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5.jstat\uff1aJVM\u7edf\u8ba1\u68c0\u67e5\u5de5\u5177\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u53ef\u89c6\u5316\u5de5\u5177<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.jconsole\uff1a\u67e5\u8be2JVM\u7684\u4fe1\u606f\u7684\u53ef\u89c6\u5316\u5de5\u5177\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.VisualVM\uff1a\u76d1\u63a7\u7ebf\u7a0b\u548c\u5185\u5b58\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u95ee\uff1a\u8bf4\u8bf4java\u5185\u5b58\u6cc4\u6f0f\u7684\u6392\u67e5\u601d\u8def\uff1f<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">java\u7684\u5185\u5b58\u6cc4\u6f0f\u4e3b\u8981\u5c31\u662f\u6307\u5806\u5185\u5b58\u7684\u6ea2\u51fa\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7jmap\u6216\u8005\u8bbe\u7f6eJVM\u7684\u53c2\u6570\u83b7\u53d6\u5806\u5185\u5b58\u7684dump\u6587\u4ef6\u3002\u901a\u8fc7VisualVM\u533a\u5206\u6790\u5806\u5185\u5b58\u7684\u4fe1\u606f\uff0c\u5b9a\u4f4d\u5185\u5b58\u6ea2\u51fa\u7684\u4ee3\u7801\uff0c\u6700\u7ec8\u53bb\u4fee\u6539\u4ee3\u7801\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u8bf4\u8bf4CPU\u98d9\u9ad8\u6392\u67e5\u65b9\u6848\u548c\u601d\u8def\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u670d\u52a1\u5668\u7aef<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u901a\u8fc7Top\u6307\u4ee4\u67e5\u8be2\u6709\u5f02\u5e38\u7684\u8fdb\u7a0b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u901a\u8fc7PS\u6307\u4ee4\u67e5\u8be2\u8fdb\u7a0b\u4e2d\u7684\u7ebf\u7a0b\u4fe1\u606f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='images\\91d1a5d82ea7a57307e27722a211c8db.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\91d1a5d82ea7a57307e27722a211c8db.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"313ea476567b4527bc27a11622485cef.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u67e5\u8be2\u5230\u5f02\u5e38\u7ebf\u7a0b\u7684id\u540e\uff0c\u5c06id\u8f6c\u4e3a16\u8fdb\u5236\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u901a\u8fc7jstack\u6307\u4ee4\u5b9a\u4f4d\u5f02\u5e38\u7ebf\u7a0b\uff0c\u5e76\u4fee\u6539\u4ee3\u7801\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8bbe\u8ba1\u6a21\u5f0f<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u6709\u4e86\u89e3\u8fc7\u5de5\u5382\u6a21\u5f0f\u5417\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u7b80\u5355\u5de5\u5382\u6a21\u5f0f\uff1a\u6240\u6709\u7684\u7c7b\u90fd\u662f\u901a\u8fc7\u4e00\u4e2a\u5de5\u5382\u8fdb\u884c\u521b\u5efa\u7684\uff0c\u5728\u540e\u7eed\u6dfb\u52a0\u6570\u636e\u7684\u65b0\u7c7b\u7684\u65f6\u5019\u9700\u8981\u4fee\u6539\u5de5\u5382\u7c7b\u4e2d\u7684\u4ee3\u7801\uff0c\u4e0d\u7b26\u5408\u5f00\u95ed\u539f\u5219\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\uff1a\u6240\u6709\u7684\u7c7b\u90fd\u5bf9\u5e94\u4e00\u4e2a\u5de5\u5382\uff0c\u901a\u8fc7\u5bf9\u5e94\u6076\u7684\u5de5\u5382\u521b\u5efa\u5bf9\u5e94\u7684\u7c7b\uff0c\u5728\u540e\u7eed\u6dfb\u52a0\u7c7b\u7684\u65f6\u5019\u521b\u5efa\u65b0\u7684\u5de5\u5382\u5373\u53ef\uff0c\u7b26\u5408\u5f00\u95ed\u539f\u5219\u3002\uff08\u6bcf\u6b21\u65b0\u5efa\u90fd\u9700\u8981\u521b\u5efa\u65b0\u7684\u5de5\u5382\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u62bd\u8c61\u5de5\u5382\u6a21\u5f0f\uff1a\u5982\u679c\u6709\u591a\u4e2a\u7eac\u5ea6\u7684\u7c7b\u9700\u8981\u88ab\u521b\u5efa\u65f6\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528\u62bd\u8c61\u5de5\u5382\u6a21\u5f0f\u3002\u5c31\u6bd4\u5982\u6709\u591a\u4e2a\u54c1\u724c\uff0c\u54c1\u724c\u53c8\u5bf9\u5e94\u591a\u4e2a\u5546\u54c1\u7c7b\u578b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6211\u7684\u9879\u76ee\u4e2d\u5c31\u662f\u4f7f\u7528\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u3002\u5728\u6211\u4eec\u652f\u4ed8\u6a21\u5757\u4e2d\u751f\u6210\u652f\u4ed8\u4e8c\u7ef4\u7801\u7684\u65f6\u5019\uff0c\u9700\u8981\u83b7\u53d6\u5bf9\u5e94\u7684\u652f\u4ed8\u6a21\u677f\u4fe1\u606f\uff0c\u91c7\u7528\u7684\u5c31\u662f ioc + \u81ea\u5b9a\u4e49\u6ce8\u89e3 + \u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f + \u7b56\u7565\u6a21\u5f0f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1. \u521b\u5efa\u4e00\u4e2abasicHandler\u63a5\u53e3\uff0c\u91cc\u9762\u5305\u62ec\u751f\u6210\u4ea4\u6613\u94fe\u63a5\uff0c\u9000\u6b3e\u7b49\u65b9\u6cd5\uff0c\u521b\u5efa\u963f\u91cc\u652f\u4ed8\u548c\u5fae\u4fe1\u652f\u4ed8\u7684\u5b9e\u73b0\u7c7b\uff0c\u901a\u8fc7\u652f\u4ed8\u6807\u7b7e\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u5bf9\u5e94\u7684\u914d\u7f6e\u4fe1\u606f\uff0c\u5305\u62ec 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class=\"wp-block-paragraph\">3.\u901a\u8fc7Hutool\u5de5\u5177\u7c7b\u4eceioc\u4e2d\u83b7\u53d6\u6240\u6709basicHamdler\u7684\u5b9e\u73b0\u7c7b\uff0c\u5728\u65b9\u6cd5\u4e2d\u4f1a\u4f20\u5165\u652f\u4ed8\u6807\u7b7e\u7684\u4fe1\u606f\uff0c\u901a\u8fc7\u904d\u5386\u5339\u914d\u5bf9\u5e94\u7684\u5b9e\u73b0\u7c7b\uff0c\u6700\u7ec8\u83b7\u53d6\u5bf9\u5e94\u7684\u5de5\u5382\u7c7b\uff08\u4e5f\u5c31\u662f\u6211\u4eec\u7684\u5b9e\u73b0\u7c7b\uff09\u3002\uff08\u652f\u4ed8\u6807\u7b7e\u5c31\u662f\u5bf9\u5e94\u7684\u4e00\u79cd\u7b56\u7565\uff0c\u904d\u5386\u83b7\u53d6\u5bf9\u5e94\u7b56\u7565\uff09<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u4ec0\u4e48\u65f6\u662f\u7b56\u7565\u6a21\u5f0f\uff1f<\/h4>\n\n\n\n<p 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lazyload-container-unload' data-fancybox='post-images' href='images\\721651259e21f2b3f42d2c88c26917ce.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"images\\721651259e21f2b3f42d2c88c26917ce.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"63af59dc14334a91876f34e5195251dd.png\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f46\u662f\u5355\u70b9\u767b\u5f55\u6709\u5b89\u5168\u6027\u7684\u95ee\u9898\uff0c\u6240\u4ee5\u6211\u7684\u4e91\u76d8\u9879\u76ee\u4e2d\u5c06\u5355\u70b9\u767b\u5f55\u5347\u7ea7\u4e3a\u53cctoken\u9a8c\u8bc1\uff08\u53cctoken\u4e09\u8ba4\u8bc1\uff09\u3002<\/p>\n\n\n\n<h4 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class=\"wp-block-paragraph\">\u4e3b\u8981\u5c31\u662f\u8bb0\u5f55\uff1a\u670d\u52a1\u7684\u540d\u79f0\uff0c\u65e5\u5fd7\u7684\u7ea7\u522b\uff0c\u65f6\u95f4\uff0c\u8c03\u7528\u65b9\u6cd5\u7684\u540d\u5b57\uff0c\u65b9\u6cd5\u53c2\u6570\u7684\u4fe1\u606f\uff0c\u7ebf\u7a0b\u4fe1\u606f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\uff1a\u5728\u4ec0\u4e48\u65f6\u5019\u4f1a\u8bb0\u5f55\u65e5\u5fd7\u4fe1\u606f\u5462\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u8c03\u7528\u91cd\u8981\u65b9\u6cd5\u65f6\u548c\u53d1\u751f\u5f02\u5e38\u65f6\u4f1a\u8fdb\u884c\u8bb0\u5f55\u65e5\u5fd7\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u95ee\uff1a\u67e5\u8be2\u65e5\u5fd7\u7684\u6307\u4ee4\u6709\u54ea\u4e9b\uff1f<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u5b9e\u65f6\u7684\u67e5\u770b\u5bf9\u5e94\u65e5\u5fd7\u7684\u4fe1\u606f\u3002\uff08-f\u5b9e\u65f6\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#\u5b9e\u65f6\u67e5\u770b\u5bf9\u5e94\u65e5\u5fd7\u7684\u4fe1\u606f\ntail -f xxx.log\n#\u5b9e\u65f6\u67e5\u770b\u5bf9\u5e94\u65e5\u5fd7\u7684\u6307\u5b9a\u524d\u884c\u6570\u7684\u4fe1\u606f\ntail -n 100 -f xxx.log<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u6309\u884c\u53f7\u67e5\u8be2<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#\u67e5\u770b\u65e5\u5fd7\u5c3e100\u884c\u7684\u6570\u636e\ntail -n 100 xxx.log\n#\u67e5\u770b\u65e5\u5fd7\u524d100\u884c\u7684\u6570\u636e\nhead -n 100 xxx.log\n#\u67e5\u770b\u5bf9\u5e94\u533a\u95f4\u7684\u65e5\u5fd7\u4fe1\u606f,\u67e5\u770b\u5bf9\u5e94\u65e5\u5fd7100~200\u884c\u7684\u4fe1\u606f \uff08\u4f7f\u7528\u7ba1\u9053\u7b26\u8fdb\u884c\u8fde\u63a5\uff09\ncat -n xxx.log|tail -n +100|head -n 100<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u6309\u6307\u5b9a\u5173\u952e\u5b57\u8fdb\u884c\u67e5\u8be2<\/p>\n\n\n\n<pre 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2],"class_list":["post-235","post","type-post","status-publish","format-standard","hentry","category-text","tag-java"],"_links":{"self":[{"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/posts\/235","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/comments?post=235"}],"version-history":[{"count":2,"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/posts\/235\/revisions"}],"predecessor-version":[{"id":357,"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/posts\/235\/revisions\/357"}],"wp:attachment":[{"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/media?parent=235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/categories?post=235"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/tags?post=235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}