{"id":3660,"date":"2025-04-26T18:57:06","date_gmt":"2025-04-26T10:57:06","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3660"},"modified":"2025-04-26T18:57:06","modified_gmt":"2025-04-26T10:57:06","slug":"%e7%ba%bf%e7%a8%8b%e6%b1%a0%e5%b8%b8%e8%a7%81%e9%94%99%e8%af%af%e4%bd%bf%e7%94%a8%e5%9c%ba%e6%99%af","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/04\/26\/%e7%ba%bf%e7%a8%8b%e6%b1%a0%e5%b8%b8%e8%a7%81%e9%94%99%e8%af%af%e4%bd%bf%e7%94%a8%e5%9c%ba%e6%99%af\/","title":{"rendered":"\u7ebf\u7a0b\u6c60\u5e38\u89c1\u9519\u8bef\u4f7f\u7528\u573a\u666f"},"content":{"rendered":"\n<p>\u672c\u7ae0\u8282\u9488\u5bf9<strong>\u7ebf\u7a0b\u6c60\u5e38\u89c1\u9519\u8bef\u4f7f\u7528\u573a\u666f\u4ee5\u53ca\u89e3\u6cd5\u505a\u4e86\u7b80\u5355\u7684\u603b\u7ed3<\/strong>\uff0c\u9762\u8bd5\u65f6\u5982\u679c\u8bb2\u5230\u8fd9\u91cc\uff0c<strong>\u7edd\u5bf9\u662f\u9ad8\u7ea7\u9009\u624b\u6c34\u5e73<\/strong>\uff01<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u274c 1. \u4f7f\u7528 Executors \u5de5\u5382\u65b9\u6cd5\u521b\u5efa\u7ebf\u7a0b\u6c60\uff08\u6781\u5bb9\u6613\u8e29\u5751\uff09<\/h2>\n\n\n\n<p>\u6bd4\u5982\u8fd9\u4e9b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Executors.newFixedThreadPool()\nExecutors.newSingleThreadExecutor()\nExecutors.newCachedThreadPool()\nExecutors.newScheduledThreadPool()<\/code><\/pre>\n\n\n\n<p><strong>\u95ee\u9898\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u4e9b\u65b9\u6cd5\u521b\u5efa\u7684\u7ebf\u7a0b\u6c60<strong>\u9ed8\u8ba4\u53c2\u6570\u4e0d\u5408\u7406<\/strong>\u3002<\/li>\n\n\n\n<li>\u6bd4\u5982\uff1a<\/li>\n\n\n\n<li><code>newFixedThreadPool()<\/code> \u548c <code>newSingleThreadExecutor()<\/code> \u2192 <strong>\u963b\u585e\u961f\u5217\u662f\u65e0\u9650\u957f LinkedBlockingQueue<\/strong> \u2794 <strong>\u4efb\u52a1\u5806\u79ef<\/strong> \u2794 <strong>\u5185\u5b58\u7206\u70b8<\/strong><\/li>\n\n\n\n<li><code>newCachedThreadPool()<\/code> \u2192 <strong>\u7ebf\u7a0b\u6570\u51e0\u4e4e\u65e0\u9650\u6269\u5c55<\/strong> \u2794 <strong>CPU\u3001\u5185\u5b58\u8017\u5c3d<\/strong> \u2794 <strong>\u7cfb\u7edf\u5d29\u6e83<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u2705 <strong>\u6b63\u786e\u505a\u6cd5\uff1a<\/strong><br><strong>\u63a8\u8350\u81ea\u5df1\u624b\u52a8 new ThreadPoolExecutor()\uff0c\u5408\u7406\u8bbe\u7f6e\u53c2\u6570\u3002<\/strong><\/p>\n\n\n\n<p>\u6bd4\u5982\ud83d\udc47<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ThreadPoolExecutor executor = new ThreadPoolExecutor(\n    corePoolSize,   \/\/ \u6838\u5fc3\u7ebf\u7a0b\u6570\n    maximumPoolSize, \/\/ \u6700\u5927\u7ebf\u7a0b\u6570\n    keepAliveTime,   \/\/ \u7a7a\u95f2\u7ebf\u7a0b\u5b58\u6d3b\u65f6\u95f4\n    TimeUnit.SECONDS,\n    new LinkedBlockingQueue&lt;&gt;(queueCapacity), \/\/ \u6709\u754c\u961f\u5217\uff0c\u9632\u6b62\u5806\u79ef\n    Executors.defaultThreadFactory(),\n    new ThreadPoolExecutor.AbortPolicy() \/\/ \u62d2\u7edd\u7b56\u7565\n);<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u274c 2. \u6838\u5fc3\u7ebf\u7a0b\u6570\u3001\u6700\u5927\u7ebf\u7a0b\u6570\u3001\u961f\u5217\u5bb9\u91cf\u53c2\u6570\u914d\u7f6e\u968f\u4fbf\u5199<\/h2>\n\n\n\n<p><strong>\u95ee\u9898\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u914d\u5f97\u592a\u5c0f \u2794 \u7ebf\u7a0b\u6c60\u5fd9\u4e0d\u8fc7\u6765\uff0c\u4efb\u52a1\u5927\u91cf\u6392\u961f\uff0c\u7cfb\u7edf\u54cd\u5e94\u6162\u3002<\/li>\n\n\n\n<li>\u914d\u5f97\u592a\u5927 \u2794 \u5360\u6ee1CPU\u3001\u5185\u5b58\uff0c\u5bfc\u81f4\u7cfb\u7edf\u5176\u4ed6\u7ebf\u7a0b\u997f\u6b7b\uff0c\u7cfb\u7edf\u6302\u6389\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u2705 <strong>\u6b63\u786e\u505a\u6cd5\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6839\u636e\u5b9e\u9645\u4e1a\u52a1\u7c7b\u578b\u8c03\u4f18\u3002<\/strong><\/li>\n\n\n\n<li>IO\u5bc6\u96c6\u578b\u4efb\u52a1\uff08\u6bd4\u5982\u7f51\u7edc\u901a\u4fe1\u3001\u6570\u636e\u5e93\u67e5\u8be2\uff09 \u2794 \u6838\u5fc3\u7ebf\u7a0b\u6570\u53ef\u4ee5\u8bbe\u7f6e\u4e3a CPU \u6838\u5fc3\u6570 \u00d7 2<\/li>\n\n\n\n<li>CPU\u5bc6\u96c6\u578b\u4efb\u52a1\uff08\u6bd4\u5982\u5927\u91cf\u8ba1\u7b97\uff09 \u2794 \u6838\u5fc3\u7ebf\u7a0b\u6570\u53ef\u4ee5\u8bbe\u7f6e\u4e3a CPU \u6838\u5fc3\u6570 + 1<\/li>\n\n\n\n<li>\u961f\u5217\u8bbe\u7f6e\u5408\u7406\u5927\u5c0f\uff0c\u4e0d\u8981\u592a\u5927\u4e5f\u4e0d\u8981\u65e0\u9650\u5927\u3002<\/li>\n\n\n\n<li>\u6700\u5927\u7ebf\u7a0b\u6570 = \u6838\u5fc3\u7ebf\u7a0b\u6570 + \u6269\u5c55\u4fdd\u62a4\u7ebf\u7a0b\u6570\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u274c 3. \u4e0d\u8bbe\u7f6e\u5408\u7406\u7684\u62d2\u7edd\u7b56\u7565<\/h2>\n\n\n\n<p><strong>\u95ee\u9898\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9ed8\u8ba4\u62d2\u7edd\u7b56\u7565\u662f <code>AbortPolicy()<\/code> \u2794 \u76f4\u63a5\u629b\u5f02\u5e38\uff0c\u5f88\u591a\u4eba\u5ffd\u7565\u4e86\u5bfc\u81f4\u5e94\u7528\u5d29\u6e83\u3002<\/li>\n\n\n\n<li>\u5176\u4ed6\u62d2\u7edd\u7b56\u7565\uff08\u6bd4\u5982 CallerRunsPolicy\uff09\u4e5f\u6709\u526f\u4f5c\u7528\uff0c\u6bd4\u5982\u53ef\u80fd\u5bfc\u81f4\u4e3b\u7ebf\u7a0b\u4e5f\u53bb\u6267\u884c\u4efb\u52a1\uff0c\u964d\u4f4e\u541e\u5410\u91cf\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u2705 <strong>\u6b63\u786e\u505a\u6cd5\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6839\u636e\u573a\u666f\u9009\u62e9\u5408\u7406\u7684\u62d2\u7edd\u7b56\u7565\uff1a<\/li>\n\n\n\n<li>\u9ad8\u5b9e\u65f6\u6027\u573a\u666f\uff08\u79d2\u6740\u7cfb\u7edf\uff09 \u2794 <code>DiscardOldestPolicy()<\/code>\uff0c\u4e22\u5f03\u65e7\u4efb\u52a1<\/li>\n\n\n\n<li>\u975e\u6838\u5fc3\u4e1a\u52a1 \u2794 <code>DiscardPolicy()<\/code>\uff0c\u76f4\u63a5\u4e22\u5f03<\/li>\n\n\n\n<li>\u6838\u5fc3\u4e1a\u52a1 \u2794 <code>CallerRunsPolicy()<\/code>\uff0c\u8ba9\u8c03\u7528\u65b9\u81ea\u5df1\u6267\u884c\uff08\u8981\u5c0f\u5fc3\u4e3b\u7ebf\u7a0b\u88ab\u5361\u4f4f\uff09<\/li>\n\n\n\n<li><strong>\u52a0\u4e0a\u62a5\u8b66\u76d1\u63a7<\/strong>\uff0c\u7ebf\u7a0b\u6c60\u89e6\u53d1\u62d2\u7edd\u65f6\u4e00\u5b9a\u8981\u8bb0\u5f55\u65e5\u5fd7\u3001\u62a5\u8b66\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u274c 4. \u7ebf\u7a0b\u6c60\u6570\u91cf\u592a\u5c11\uff0c\u5bfc\u81f4\u5927\u91cf\u6392\u961f\u8d85\u65f6<\/h2>\n\n\n\n<p><strong>\u95ee\u9898\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6838\u5fc3\u7ebf\u7a0b\u6570\u592a\u4f4e\uff0c\u4efb\u52a1\u6267\u884c\u6162\uff0c\u7528\u6237\u8bf7\u6c42\u8d85\u65f6\uff0c\u7cfb\u7edf\u4e0d\u53ef\u7528\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u2705 <strong>\u6b63\u786e\u505a\u6cd5\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6839\u636e\u5b9e\u9645\u7684\u4efb\u52a1\u91cf\u548c\u6027\u80fd\u6d4b\u8bd5\u6570\u636e\uff0c\u52a8\u6001\u8c03\u8282\u7ebf\u7a0b\u6c60\u5927\u5c0f\uff0c\u4fdd\u8bc1\u4efb\u52a1\u5728\u53ef\u63a5\u53d7\u7684\u65f6\u95f4\u5185\u5b8c\u6210\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u274c 5. \u591a\u4e2a\u4e1a\u52a1\u5171\u4eab\u4e00\u4e2a\u7ebf\u7a0b\u6c60\uff08\u7ebf\u7a0b\u6c60\u8d44\u6e90\u4e89\u62a2\uff09<\/h2>\n\n\n\n<p><strong>\u95ee\u9898\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e0d\u540c\u4e1a\u52a1\u6df7\u5728\u4e00\u4e2a\u7ebf\u7a0b\u6c60\u91cc\uff0c\u5bb9\u6613\u4e92\u76f8\u5f71\u54cd\u3002<\/li>\n\n\n\n<li>\u6bd4\u5982\u6162\u67e5\u8be2\u4e1a\u52a1\u628a\u6574\u4e2a\u7ebf\u7a0b\u6c60\u5361\u4f4f\uff0c\u5bfc\u81f4\u9ad8\u4f18\u5148\u7ea7\u4e1a\u52a1\u4e5f\u6267\u884c\u4e0d\u4e86\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u2705 <strong>\u6b63\u786e\u505a\u6cd5\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4e1a\u52a1\u9694\u79bb<\/strong>\uff1a\u91cd\u8981\u4e1a\u52a1\u548c\u6b21\u8981\u4e1a\u52a1\u4f7f\u7528\u4e0d\u540c\u7684\u7ebf\u7a0b\u6c60\uff0c\u907f\u514d\u4e92\u76f8\u5f71\u54cd\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u603b\u7ed3\u4e00\u7248\u4e07\u80fd\u6536\u5c3e\uff08\u53ef\u76f4\u63a5\u5728\u9762\u8bd5\u7ed3\u5c3e\u7528\uff09<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>&#8220;\u7ebf\u7a0b\u6c60\u867d\u7136\u80fd\u5927\u5e45\u63d0\u5347\u7cfb\u7edf\u6027\u80fd\u548c\u8d44\u6e90\u5229\u7528\u7387\uff0c\u4f46\u5982\u679c\u53c2\u6570\u914d\u7f6e\u4e0d\u5408\u7406\u3001\u62d2\u7edd\u7b56\u7565\u5904\u7406\u4e0d\u5f53\u6216\u8005\u4e1a\u52a1\u6ca1\u6709\u9694\u79bb\uff0c\u5c31\u5f88\u5bb9\u6613\u5bfc\u81f4\u7cfb\u7edf\u96ea\u5d29\u3002\u6240\u4ee5\u5b9e\u9645\u5f00\u53d1\u4e2d\u8981\u6839\u636e\u4e1a\u52a1\u7279\u70b9\u7cbe\u7ec6\u5316\u8c03\u4f18\u7ebf\u7a0b\u6c60\u914d\u7f6e\uff0c\u5e76\u914d\u5408\u76d1\u63a7\u4e0e\u62a5\u8b66\u673a\u5236\uff0c\u4fdd\u969c\u7cfb\u7edf\u7a33\u5b9a\u8fd0\u884c\u3002&#8221;<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u7ae0\u8282\u9488\u5bf9\u7ebf\u7a0b\u6c60\u5e38\u89c1\u9519\u8bef\u4f7f\u7528\u573a\u666f\u4ee5\u53ca\u89e3\u6cd5\u505a\u4e86\u7b80\u5355\u7684\u603b\u7ed3\uff0c\u9762\u8bd5\u65f6\u5982\u679c\u8bb2\u5230\u8fd9\u91cc\uff0c\u7edd\u5bf9\u662f\u9ad8\u7ea7\u9009\u624b\u6c34\u5e73\uff01 \u274c 1. \u4f7f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3661,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[],"class_list":["post-3660","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java-"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3660","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3660"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3660\/revisions"}],"predecessor-version":[{"id":3662,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3660\/revisions\/3662"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3661"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3660"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3660"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3660"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}