{"id":3988,"date":"2025-07-28T21:14:40","date_gmt":"2025-07-28T13:14:40","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3988"},"modified":"2025-07-28T21:14:40","modified_gmt":"2025-07-28T13:14:40","slug":"%e7%ba%bf%e7%a8%8b%e6%b1%a0%e6%98%af%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e7%ba%bf%e7%a8%8b%e5%a4%8d%e7%94%a8%e7%9a%84%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/07\/28\/%e7%ba%bf%e7%a8%8b%e6%b1%a0%e6%98%af%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e7%ba%bf%e7%a8%8b%e5%a4%8d%e7%94%a8%e7%9a%84%ef%bc%9f\/","title":{"rendered":"\u7ebf\u7a0b\u6c60\u662f\u5982\u4f55\u5b9e\u73b0\u7ebf\u7a0b\u590d\u7528\u7684\uff1f"},"content":{"rendered":"\n<p>\u7ebf\u7a0b\u6c60\u4e4b\u6240\u4ee5\u80fd<strong>\u5b9e\u73b0\u7ebf\u7a0b\u590d\u7528<\/strong>\uff0c\u5173\u952e\u5728\u4e8e\u5b83<strong>\u7ef4\u62a4\u4e86\u4e00\u4e2a\u7ebf\u7a0b\u7684\u5bb9\u5668<\/strong>\uff0c\u5e76\u901a\u8fc7\u961f\u5217\u548c\u72b6\u6001\u63a7\u5236\uff0c\u5c06\u591a\u4e2a\u4efb\u52a1\u5206\u53d1\u7ed9\u6709\u9650\u7684\u7ebf\u7a0b\u6267\u884c\uff0c\u800c<strong>\u4e0d\u662f\u6bcf\u6b21\u90fd\u521b\u5efa\u65b0\u7ebf\u7a0b<\/strong>\u3002<\/p>\n\n\n\n<p>\u4e0b\u9762\u4ece\u6e90\u7801\u673a\u5236\u3001\u6838\u5fc3\u7ec4\u4ef6\u3001\u6267\u884c\u6d41\u7a0b\u548c\u793a\u4f8b\uff0c<strong>\u5168\u9762\u5256\u6790\u7ebf\u7a0b\u590d\u7528\u7684\u5b9e\u73b0\u539f\u7406<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u7ebf\u7a0b\u590d\u7528\u7684\u57fa\u672c\u601d\u60f3<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u6bcf\u4e2a\u4efb\u52a1\u90fd\u65b0\u5efa\u7ebf\u7a0b\uff0c\u5f00\u9500\u5927\uff0c\u9891\u7e41\u521b\u5efa\/\u9500\u6bc1\u4ee3\u4ef7\u9ad8\uff08CPU\u4e0a\u4e0b\u6587\u5207\u6362 + \u5185\u5b58\u7533\u8bf7\/\u91ca\u653e\uff09\u3002<\/li>\n\n\n\n<li><strong>\u7ebf\u7a0b\u6c60\u4e2d\u7ebf\u7a0b\u53ef\u590d\u7528<\/strong>\uff1a\u4efb\u52a1\u6267\u884c\u5b8c\u540e\u7ebf\u7a0b\u4e0d\u9500\u6bc1\uff0c\u800c\u662f\u56de\u5230\u6c60\u4e2d\u7b49\u5f85\u4e0b\u4e00\u4e2a\u4efb\u52a1\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\">\u4e8c\u3001\u6838\u5fc3\u7ec4\u4ef6\uff1a<code>ThreadPoolExecutor<\/code><\/h2>\n\n\n\n<p>Java \u4e2d\u7ebf\u7a0b\u6c60\u7684\u6838\u5fc3\u7c7b\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>java.util.concurrent.ThreadPoolExecutor<\/code><\/pre>\n\n\n\n<p>\u590d\u7528\u7684\u6838\u5fc3\u673a\u5236\u4e3b\u8981\u6d89\u53ca\u4ee5\u4e0b\u51e0\u4e2a\u6210\u5458\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5c5e\u6027\/\u7ec4\u4ef6<\/th><th>\u8bf4\u660e<\/th><\/tr><\/thead><tbody><tr><td><code>BlockingQueue&lt;Runnable&gt; workQueue<\/code><\/td><td>\u4efb\u52a1\u961f\u5217\uff0c\u5b58\u653e\u7b49\u5f85\u6267\u884c\u7684\u4efb\u52a1<\/td><\/tr><tr><td><code>Set&lt;Worker&gt; workers<\/code><\/td><td>\u6d3b\u8dc3\u7ebf\u7a0b\u96c6\u5408<\/td><\/tr><tr><td><code>Worker<\/code> \u7ebf\u7a0b\u5bf9\u8c61<\/td><td>\u5c01\u88c5\u4e86\u7ebf\u7a0b\u4e0e\u4efb\u52a1\u6267\u884c\u903b\u8f91<\/td><\/tr><tr><td><code>runWorker()<\/code> \u65b9\u6cd5<\/td><td>\u63a7\u5236\u7ebf\u7a0b\u5982\u4f55\u4e0d\u65ad\u4ece\u961f\u5217\u4e2d\u53d6\u4efb\u52a1\u5e76\u6267\u884c\uff08\u590d\u7528\u5173\u952e\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u7ebf\u7a0b\u590d\u7528\u6d41\u7a0b\u8be6\u89e3<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7ebf\u7a0b\u6c60\u590d\u7528\u7ebf\u7a0b\u7684\u8fc7\u7a0b\uff0c\u53ef\u4ee5\u7528\u4e00\u5f20\u56fe\u7406\u89e3\uff1a<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>   \u63d0\u4ea4\u4efb\u52a1\n      \u2193\ncorePoolSize\u662f\u5426\u6ee1\uff1f\u2500\u2192 \u521b\u5efa\u65b0\u7ebf\u7a0b\u6267\u884c\u4efb\u52a1\n      \u2193 \u5426\n   \u653e\u5165\u4efb\u52a1\u961f\u5217\n      \u2193\n\u7ebf\u7a0b\u6267\u884c\u5b8c\u4efb\u52a1\u540e\u4e0d\u4f1a\u9500\u6bc1\uff0c\u800c\u662f\uff1a\n      \u2192 \u518d\u6b21\u4ece\u4efb\u52a1\u961f\u5217\u4e2d\u53d6\u4efb\u52a1 \u2192 \u6267\u884c \u2192 \u7b49\u5f85\u4e0b\u4e00\u4efb\u52a1<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001\u6e90\u7801\u89e3\u6790\u5173\u952e\u7247\u6bb5\uff08\u7b80\u5316\uff09<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u6838\u5fc3\u903b\u8f91\uff1a\u7ebf\u7a0b\u4e0d\u4f1a\u9000\u51fa\uff0c\u4f1a\u5faa\u73af\u4ece\u961f\u5217\u53d6\u4efb\u52a1\nfinal void runWorker(Worker w) {\n    Thread t = w.thread;\n    Runnable task = w.firstTask;\n\n    while (task != null || (task = getTask()) != null) {\n        try {\n            task.run();  \/\/ \u590d\u7528\u7ebf\u7a0b\u6267\u884c\u4efb\u52a1\n        } finally {\n            task = null;\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><code>getTask()<\/code> \u65b9\u6cd5\u6838\u5fc3\u903b\u8f91\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5c1d\u8bd5\u4ece <code>BlockingQueue<\/code> \u4e2d\u62ff\u5230\u4efb\u52a1\uff08<code>poll()<\/code> \u6216 <code>take()<\/code>\uff09<\/li>\n\n\n\n<li>\u5982\u679c <code>keepAliveTime<\/code> \u5230\u671f\u4e14\u662f\u975e\u6838\u5fc3\u7ebf\u7a0b\uff0c\u5c31\u9000\u51fa\uff08\u56de\u6536\uff09<\/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\">\u4e94\u3001\u7ebf\u7a0b\u590d\u7528\u7684\u5173\u952e\u70b9<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u673a\u5236<\/th><th>\u8bf4\u660e<\/th><\/tr><\/thead><tbody><tr><td><strong>\u7ebf\u7a0b\u4e0d\u9500\u6bc1<\/strong><\/td><td><code>runWorker()<\/code> \u4e2d\u7ebf\u7a0b\u5faa\u73af\u53d6\u4efb\u52a1\uff0c\u4e0d\u7acb\u5373\u7ec8\u6b62<\/td><\/tr><tr><td><strong>\u4efb\u52a1\u6392\u961f\u7b49\u5f85<\/strong><\/td><td>\u4f7f\u7528\u961f\u5217\uff08\u5982 <code>LinkedBlockingQueue<\/code>\uff09\u7f13\u5b58\u4efb\u52a1<\/td><\/tr><tr><td><strong>\u7a7a\u95f2\u7ebf\u7a0b\u56de\u6536\u673a\u5236<\/strong><\/td><td>\u901a\u8fc7 <code>keepAliveTime<\/code> \u56de\u6536\u975e\u6838\u5fc3\u7ebf\u7a0b<\/td><\/tr><tr><td><strong>\u7ebf\u7a0b\u590d\u7528 vs \u91cd\u5efa<\/strong><\/td><td>\u5982\u679c\u7ebf\u7a0b\u5f02\u5e38\u4e2d\u65ad\uff0c\u7ebf\u7a0b\u6c60\u4f1a\u521b\u5efa\u65b0\u7684\u66ff\u4ee3\u7ebf\u7a0b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u516d\u3001\u4ee3\u7801\u5b9e\u8bc1\uff1a\u7ebf\u7a0bID\u9a8c\u8bc1\u590d\u7528<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>ExecutorService pool = Executors.newFixedThreadPool(2);\n\nRunnable task = () -&gt; {\n    System.out.println(Thread.currentThread().getName() + \" \u6b63\u5728\u6267\u884c\u4efb\u52a1\");\n    try { Thread.sleep(1000); } catch (InterruptedException e) {}\n};\n\nfor (int i = 0; i &lt; 5; i++) {\n    pool.execute(task);\n}\n\npool.shutdown();<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u8f93\u51fa\u793a\u4f8b\uff1a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>pool-1-thread-1 \u6b63\u5728\u6267\u884c\u4efb\u52a1\npool-1-thread-2 \u6b63\u5728\u6267\u884c\u4efb\u52a1\npool-1-thread-1 \u6b63\u5728\u6267\u884c\u4efb\u52a1   \u2190 \u590d\u7528\npool-1-thread-2 \u6b63\u5728\u6267\u884c\u4efb\u52a1   \u2190 \u590d\u7528\npool-1-thread-1 \u6b63\u5728\u6267\u884c\u4efb\u52a1   \u2190 \u7ee7\u7eed\u590d\u7528<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7ebf\u7a0b ID \u4e0d\u53d8\uff0c\u8bf4\u660e\u7ebf\u7a0b\u88ab\u590d\u7528\uff0c\u6ca1\u6709\u91cd\u590d\u521b\u5efa\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e03\u3001\u53c2\u8003\u8d44\u6599<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/util\/concurrent\/ThreadPoolExecutor.html\">Java \u5b98\u65b9\u6587\u6863 &#8211; ThreadPoolExecutor<\/a><\/li>\n\n\n\n<li>\u300aJava \u5e76\u53d1\u7f16\u7a0b\u5b9e\u6218\u300b\u7b2c 8 \u7ae0\u7ebf\u7a0b\u6c60\u673a\u5236<\/li>\n\n\n\n<li> <a href=\"https:\/\/github.com\/openjdk\/jdk\/blob\/master\/src\/java.base\/share\/classes\/java\/util\/concurrent\/ThreadPoolExecutor.java\">Java Source Code \u2013 ThreadPoolExecutor<\/a><\/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\">\u516b\u3001\u603b\u7ed3\u4e00\u53e5\u8bdd<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>\u7ebf\u7a0b\u6c60\u590d\u7528\u7ebf\u7a0b\u7684\u672c\u8d28<\/strong>\uff1a\u7ebf\u7a0b\u6267\u884c\u5b8c\u4e00\u4e2a\u4efb\u52a1\u540e\u4e0d\u9000\u51fa\uff0c\u800c\u662f\u5faa\u73af\u4ece\u961f\u5217\u4e2d\u83b7\u53d6\u65b0\u4efb\u52a1\u6267\u884c\uff0c\u907f\u514d\u9891\u7e41\u521b\u5efa\u9500\u6bc1\uff0c\u63d0\u5347\u6027\u80fd\u548c\u8d44\u6e90\u5229\u7528\u7387\u3002<\/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>\u7ebf\u7a0b\u6c60\u4e4b\u6240\u4ee5\u80fd\u5b9e\u73b0\u7ebf\u7a0b\u590d\u7528\uff0c\u5173\u952e\u5728\u4e8e\u5b83\u7ef4\u62a4\u4e86\u4e00\u4e2a\u7ebf\u7a0b\u7684\u5bb9\u5668\uff0c\u5e76\u901a\u8fc7\u961f\u5217\u548c\u72b6\u6001\u63a7\u5236\uff0c\u5c06\u591a\u4e2a\u4efb\u52a1\u5206\u53d1\u7ed9\u6709\u9650\u7684\u7ebf\u7a0b\u6267 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3989,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86,68],"tags":[],"class_list":["post-3988","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java-","category-java"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3988","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=3988"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3988\/revisions"}],"predecessor-version":[{"id":3990,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3988\/revisions\/3990"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3989"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3988"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3988"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3988"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}