{"id":10006599,"date":"2022-09-26T16:34:06","date_gmt":"2022-09-26T08:34:06","guid":{"rendered":"https:\/\/ityet.com\/?p=10006599"},"modified":"2022-09-26T16:34:06","modified_gmt":"2022-09-26T08:34:06","slug":"java-%e5%b9%b6%e5%8f%91%e7%bc%96%e7%a8%8b%e7%94%9f%e4%ba%a7%e5%ba%94%e7%94%a8%e5%9c%ba%e6%99%af%e5%8f%8a%e5%ae%9e%e6%88%98","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10006599","title":{"rendered":"Java \u5e76\u53d1\u7f16\u7a0b\u751f\u4ea7\u5e94\u7528\u573a\u666f\u53ca\u5b9e\u6218"},"content":{"rendered":"<h3>\u80cc\u666f\u4ecb\u7ecd<\/h3>\n<h4>\u4e3a\u4ec0\u4e48\u9700\u8981\u5b66\u4e60 Java \u5e76\u53d1\uff1f<\/h4>\n<h5>\u4ece\u63d0\u5347\u6027\u80fd\u89d2\u5ea6\u6765\u8bf4<\/h5>\n<ul>\n<li><strong>\u63d0\u5347\u4e86\u5bf9CPU\u7684\u4f7f\u7528\u6548\u7387<\/strong>\uff1a\u76ee\u524d\u751f\u4ea7\u7684\u670d\u52a1\u5668\u5927\u591a\u6570\u90fd\u662f\u591a\u6838\uff0c\u6807\u914d\u7684\u673a\u5668\u90fd\u662f 8C\/16G\u3002\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u5c06\u4e0d\u540c\u7684\u7ebf\u7a0b\u5206\u914d\u7ed9\u4e0d\u540c\u7684\u6838\u5fc3\u5904\u7406\uff0c\u7406\u8bba\u4e0a\uff0c\u6709\u591a\u5c11\u6838\u5fc3\u5c31\u6709\u591a\u5c11\u4e2a\u7ebf\u7a0b\u5e76\u884c\u6267\u884c\u3002\u5982\u679c\u6ca1\u6709\u5e76\u53d1\u7f16\u7a0b\uff0cCPU\u7684\u5229\u7528\u7387\u5c06\u6781\u5927\u7684\u6d6a\u8d39\uff0c\u5047\u8bbe\u5f53\u524d\u6b63\u5728\u5904\u7406\u8017\u65f6\u7684 I\/O \u64cd\u4f5c\uff0c\u90a3\u4e48\u6574\u4e2aCPU\u5c31\u4f1a\u5904\u4e8e\u963b\u585e\u7a7a\u95f2\u72b6\u6001\uff0c\u540e\u9762\u7684\u6307\u4ee4\u5fc5\u987b\u7b49\u5f85\u524d\u9762\u7684\u6267\u884c\u5b8c\u624d\u80fd\u7ee7\u7eed\u6267\u884c\u3002<\/li>\n<li><strong>\u964d\u4f4e\u670d\u52a1 RT<\/strong>\uff1a\u5927\u578b\u4e92\u8054\u7f51\u8bbf\u95ee\u91cf\u8f7b\u677e\u6bcf\u79d2\u8f7b\u677e\u8fc7\u4e07\uff0c\u5982\u679c\u6ca1\u6709\u5e76\u53d1\u5904\u7406\uff0c\u6240\u6709\u7684\u7528\u6237\u8bf7\u6c42\u90fd\u4f1a\u6392\u961f\u7b49\u5f85\uff0c\u90a3\u79cd\u4f53\u9a8c\u6548\u679c\u4f60\u80fd\u60f3\u8c61\u4e48\uff0c\u8fd9\u6837\u7684\u670d\u52a1\u80fd\u529b\u5982\u4f55\u80fd\u7559\u4f4f\u5ba2\u6237\uff1f\u6709\u4e86\u5e76\u53d1\u7f16\u7a0b\uff0c\u5145\u5206\u91ca\u653eCPU\u7b97\u529b\uff0c\u64cd\u4f5c\u7cfb\u7edf\u8ba9\u6bcf\u4e2a\u5ba2\u6237\u8f6e\u6d41\u4f7f\u7528CPU\u8ba1\u7b97\uff0c\u6bcf\u4e2a\u5ba2\u6237\u90fd\u80fd\u5f97\u5230\u5feb\u901f\u7684\u54cd\u5e94\u3002<\/li>\n<li><strong>\u5bb9\u9519\u7387\u9ad8<\/strong>\uff1a\u7ebf\u7a0b\u4e0e\u7ebf\u7a0b\u4e4b\u95f4\u7684\u6267\u884c\u4e0d\u4f1a\u76f8\u4e92\u5e72\u6270\uff0c\u67d0\u4e2a\u7ebf\u7a0b\u6267\u884c\u51fa\u73b0\u5f02\u5e38\u9000\u51fa\uff0c\u4e0d\u4f1a\u5bf9\u5176\u5b83\u7ebf\u7a0b\u9020\u6210\u5f71\u54cd\u3002<\/li>\n<\/ul>\n<h5>\u4ece\u5f00\u53d1\u8005\u89d2\u5ea6\u6765\u8bf4<\/h5>\n<ul>\n<li><strong>Java \u57fa\u7840\u9762\u8bd5\u5fc5\u8003\u5bdf\u6280\u80fd<\/strong>\uff1aJava \u5e76\u53d1\u9762\u8bd5\u95ee\u9898\u57fa\u672c\u5fc5\u51fa\u73b0\uff0c\u6709\u5927\u578b\u9879\u76ee\u7814\u53d1\u7ecf\u9a8c\u7684\u540c\u5b66\uff0c\u5904\u7406\u5e76\u53d1\u95ee\u9898\u591a\u7684\u540c\u5b66\uff0c\u5f80\u5f80\u4f1a\u88ab\u9752\u7750\u3002\u56e0\u4e3a\u8d8a\u662f\u590d\u6742\u7684\u7cfb\u7edf\uff0c\u5e76\u53d1\u8bf7\u6c42\u5c31\u8d8a\u591a\uff0c\u7b80\u5355\u7684\u4e1a\u52a1 + \u5e76\u53d1 = \u8fd9\u4e2a\u4e1a\u52a1\u4e0d\u7b80\u5355\u3002<\/li>\n<li><strong>\u5de5\u4f5c\u4e2d\u79bb\u4e0d\u5f00\u5e76\u53d1<\/strong>\uff1a\u591a\u7ebf\u7a0b\u80fd\u5145\u5206\u53d1\u6325CPU\u7684\u8ba1\u7b97\u529b\uff0c\u8fd9\u4f7f\u5f97\u6211\u4eec\u4e0d\u5f97\u4e0d\u4e86\u89e3\u5e76\u53d1\u7684\u539f\u7406\uff0c\u4ee5\u514d\u9020\u6210\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\uff0c\u7ed9\u751f\u4ea7\u5e26\u6765\u635f\u5931\u3002\u5e38\u7528\u7684\u4e2d\u95f4\u4ef6\u4e2d\u5927\u91cf\u8fd0\u7528\u4e86\u5e76\u53d1\u77e5\u8bc6\uff0c\u5982 MQ\u3001RPC\u7b49\uff0c\u5982\u679c\u4e0d\u719f\u6089\u539f\u7406\uff0c\u5982\u4f55\u80fd\u591f\u8c03\u4f18\u4e2d\u95f4\u4ef6\u7684\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h3>\u5e76\u53d1\u7f16\u7a0b\u4e1a\u52a1\u4e2d\u7684\u5b9e\u8df5<\/h3>\n<h4>\u5b9e\u8df5\u4e00\uff1a\u98ce\u63a7\u89c4\u5219\u5f15\u64ce\u2014\u2014\u7b56\u7565\u6267\u884c<\/h4>\n<p>\u4e92\u8054\u7f51\u4f01\u4e1a\u98ce\u63a7\u5b89\u5168\u90e8\u95e8\u6bcf\u65f6\u6bcf\u523b\u90fd\u9700\u8981\u548c\u9ed1\u7070\u4ea7\u5bf9\u6297\uff0c\u4fdd\u62a4\u4f01\u4e1a\u906d\u53d7\u4e0d\u5fc5\u8981\u7684\u7ecf\u6d4e\u635f\u5931\u3002\u98ce\u63a7\u7b56\u7565\u56e2\u961f\u5728\u5bf9\u6297\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6c89\u6dc0\u51fa\u4e00\u7cfb\u5217\u98ce\u9669\u8bc6\u522b\u7b56\u7565\uff0c\u7528\u4ee5\u68c0\u6d4b\u5f53\u524d\u4e1a\u52a1\u8bf7\u6c42\u4e2d\u5426\u5b58\u5728\u9ad8\u5371\u64cd\u4f5c\u3002<\/p>\n<p>\u98ce\u63a7\u5b89\u5168\u56e2\u961f\u9700\u8981\u8bc4\u4f30\u4e1a\u52a1\u5728\u8fd0\u884c\u6d41\u7a0b\u4e2d\uff0c\u662f\u5426\u5b58\u5728\u9ed1\u4ea7\u80fd\u591f\u83b7\u53d6\u5229\u76ca\u70b9\u7684\u5730\u65b9\uff0c\u5373\u201c<strong>\u98ce\u9669\u5361\u70b9<\/strong>\u201d\u3002\u8bc4\u4f30\u540e\uff0c\u9700\u8981\u4e1a\u52a1\u5728\u6bcf\u6b21\u6d41\u7a0b\u7ecf\u8fc7\u98ce\u9669\u5361\u70b9\u5904\uff0c\u9700\u900f\u4f20\u4e1a\u52a1\u4fe1\u606f\u7ed9\u98ce\u63a7\u670d\u52a1\uff0c\u98ce\u63a7\u670d\u52a1\u5728\u5f88\u591a\u65f6\u95f4\u5185\u8fdb\u884c\u5927\u91cf\u51b3\u7b56\u8ba1\u7b97\uff0c\u5e76\u8fd4\u56de\u4e1a\u52a1\u65b9\u51b3\u7b56\u7ed3\u679c\uff08ACCEPT-\u901a\u8fc7\/REVIEW-\u4eba\u5de5\uff0c\u9700\u8fdb\u4e00\u6b65\u4fe1\u606f\u786e\u8ba4\/REJECT-\u62d2\u7edd\uff0c\u9ad8\u5371\u64cd\u4f5c\uff09\u3002\u5982\u56fe\u5c55\u793a\u7684\u662f\u8425\u9500\u6d3b\u52a8\u2014\u2014\u88c2\u53d8\u7c7b\u6d3b\u52a8\u98ce\u9669\u5361\u70b9\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/bVc2oDZ\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><br \/>\u8425\u9500\u88c2\u53d8\u6d41\u7a0b\u98ce\u9669\u5361\u70b9\u56fe<\/p>\n<p>\u4e00\u6761\u4e1a\u52a1\u8bf7\u6c42\u8017\u65f6\u4e00\u822c\u5728  300 ~ 500 ms \u4e4b\u95f4\uff0c\u5982\u679c\u8d85\u8fc7\u8fd9\u4e2a\u533a\u95f4\uff0c\u53ef\u80fd\u5c31\u9700\u8981\u5b9a\u4f4d\u8c03\u4f18\u54ea\u4e2a\u8282\u70b9\u8017\u65f6\u9ad8\u4e86\u3002\u5927\u578b\u4e92\u8054\u7f51\u516c\u53f8\u7cfb\u7edf\u67b6\u6784\u6bd4\u8f83\u590d\u6742\uff0c\u5b8c\u6574\u7684\u4e1a\u52a1\u53ef\u80fd\u6709\u51e0\u5341\u751a\u81f3\u4e0a\u767e\u4e2a\u670d\u52a1\u7cfb\u7edf\uff0c\u4f60\u89e6\u53d1\u7684\u4e00\u6b21\u8bf7\u6c42\uff0c\u53ef\u80fd\u4e2d\u9014\u4f1a\u7ecf\u8fc7\u591a\u5c11\u670d\u52a1\u8d85\u8fc7\u4f60\u60f3\u8c61\u3002<\/p>\n<p>\u5982\u4e0a\u8ff0\uff0c\u4e1a\u52a1\u5bf9\u98ce\u63a7\u670d\u52a1\u7684\u6027\u80fd\u8981\u6c42\u5f88\u9ad8\uff0c\u4e00\u822c\u63a7\u5236\u5728 100 ms \u4ee5\u5185\u3002\u4f46\u98ce\u63a7\u5185\u90e8\u6392\u67e5\u4e1a\u52a1\u8bf7\u6c42\u6d89\u53ca\u5927\u91cf\u7b56\u7565\u548c\u89c4\u5219\uff0c\u5982\u4f55\u77ed\u65f6\u95f4\u5185\u6267\u884c\u5b8c\uff0c\u4e14\u53c8\u4e0d\u9609\u5272\u7b56\u7565\u5462\uff1f\u7b54\u6848\u662f\u5e76\u53d1\u53d8\u6210\u3002\u98ce\u63a7\u5185\u90e8\u5927\u91cf\u4f7f\u7528\u5e76\u53d1\uff0c\u4ee5\u6ee1\u8db3\u6d77\u91cf\u8bf7\u6c42\u548c\u8ba1\u7b97\u9700\u6c42\uff0c\u6211\u5c06\u4ee5\u7b56\u7565\u89c4\u5219\u7684\u6267\u884c\u6765\u4e3e\u4f8b\u5982\u4f55\u7f16\u5199\u7f16\u53d1\u53d8\u6210\u4ee3\u7801\u3002\u5982\u4e0b\u662f\u98ce\u63a7\u670d\u52a1\u4e00\u6b21\u8bf7\u6c42\u7684\u5927\u81f4\u6267\u884c\u6d41\u7a0b\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/bVc2oD0\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><br \/>\u98ce\u63a7\u6d41\u7a0b\u6267\u884c\u56fe<\/p>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u4e00\u6b21\u98ce\u63a7\u8bf7\u6c42\u7684\u5224\u5b9a\uff0c\u6d89\u53ca\u5927\u91cf\u7684\u89c4\u5219\u5224\u5b9a\uff0c\u6b64\u65f6\u5982\u679c\u6ca1\u6709\u5e76\u53d1\uff0c\u4f1a\u51fa\u73b0\u4ec0\u4e48\u6548\u679c\uff1f<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/bVc2oD1\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><br \/>\u4e32\u884c&#038;\u5e76\u884c\u6267\u884c\u89c4\u5219\u56fe<\/p>\n<p>\u5168\u90e8\u4e32\u884c\u6267\u884c\u7b56\u7565\u548c\u89c4\u5219\u7684\u8bdd\uff0c\u53ef\u80fd\u51e0\u79d2\u90fd\u4e0d\u5b9a\u80fd\u8ba1\u7b97\u51fa\u6765\uff0c\u6b64\u65f6\u6211\u4eec\u9700\u8981\u4f7f\u7528 Java \u5e76\u53d1\u6765\u6ee1\u8db3\u6027\u80fd\u9700\u6c42\u3002<br \/>\u6838\u5fc3\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"java\">public class RuleSessionExecutor {\n\n    \/\/ \u7ebf\u7a0b\u6c60\n    private final static ExecutorService executor = new ThreadPoolExecutor(\n            Runtime.getRuntime().availableProcessors() * 8,\n            Runtime.getRuntime().availableProcessors() * 8,\n            0L, TimeUnit.MILLISECONDS,\n            new LinkedBlockingQueue&lt;Runnable&gt;(),\n            new CustomerThreadFactory(&quot;rule-executor&quot;),\n            new ThreadPoolExecutor.AbortPolicy());\n\n    \/**\n     * \u89c4\u5219\u6267\u884c\n     * @param rules\n     *\/\n    public void execute(List&lt;CustomerSession&gt; rules) {\n        final CountDownLatch lock = new CountDownLatch(rules.size());\n        for (CustomerSession session : rules) {\n            try {\n                session.exec();\n            } catch (Throwable e) {\n\n            } finally {\n                lock.countDown();\n            }\n        }\n\n        try {\n            lock.await(50, TimeUnit.MILLISECONDS);\n        } catch (InterruptedException e) {\n            log.error(&quot;CountDownLatch error&quot;, e);\n        }\n    }\n}\n<\/code><\/pre>\n<p>\u6b64\u5904\u7528\u5230\u4e86 CountDownLatch \u5e76\u53d1\u5de5\u5177\u7c7b\uff0c\u4e0b\u6587\u4f1a\u4f7f\u7528\u4ecb\u7ecd\u3002<\/p>\n<h4>\u5b9e\u8df5\u4e8c\uff1a\u98ce\u63a7\u7279\u5f81\u5e73\u53f0\u7279\u5f81\u52a0\u8f7d<\/h4>\n<p>\u5982\u4e0a\u8ff0\u5b9e\u8df5\u4e00\uff0c\u5927\u91cf\u7684\u89c4\u5219\u6267\u884c\u524d\u9700\u8981\u5927\u91cf\u7684\u7279\u5f81\uff0c\u5982\u679c\u5728\u6bcf\u6761\u89c4\u5219\u6267\u884c\u5185\u83b7\u53d6\u7279\u5f81\uff0c\u53ef\u884c\uff0c\u4f46\u662f\u4f1a\u9020\u6210\u7279\u5f81\u7684\u91cd\u590d\u83b7\u53d6\u95ee\u9898\uff0c\u6d6a\u8d39\u4e86\u6027\u80fd\u3002\u4e3e\u4f8b\uff1a\u5982\u679c\u89c4\u5219\u4eba\u5458\u505a A\/B \u6d4b\u8bd5\uff0c\u4e24\u4e2a\u7b56\u7565\u5305\u6709\u4ea4\u96c6\u7684\u7279\u5f81\u7279\u522b\u591a\uff0c\u6b64\u65f6\u5982\u679c\u5728\u6bcf\u4e2a\u89c4\u5219\u5185\u83b7\u53d6\uff0c\u5c31\u7b49\u4e8e\u6709\u4ea4\u96c6\u7684\u7279\u5f81\u91cd\u590d\u8bbf\u95ee\u4e24\u6b21\uff0c\u8fd9\u79cd\u6d6a\u8d39\u662f\u6ca1\u5fc5\u8981\u7684\u3002\u6b64\u65f6\u6211\u4eec\u5728\u89c4\u5219\u6267\u884c\u524d\u5148\u83b7\u53d6\u5f53\u524d\u7b56\u7565\u5305\u4e0b\u6240\u6709\u7684\u53bb\u91cd\u7279\u5f81\uff0c\u7136\u540e\u83b7\u53d6\u6240\u6709\u7684\u7279\u5f81\u540e\uff0c\u518d\u53bb\u6267\u884c\u89c4\u5219\u3002<\/p>\n<p>\u90a3\u4e48\u6b64\u65f6\u7684\u95ee\u9898\u662f\uff0c\u5982\u4f55\u6279\u91cf\u7684\u53bb\u83b7\u53d6\u7279\u5f81\u5462\uff1f<br \/>\u7279\u5f81\u7684\u79cd\u7c7b\u5f88\u591a:<\/p>\n<ul>\n<li>\u8f93\u5165\u578b\uff1a\u4e0d\u8017\u65f6-\u8bf7\u6c42\u4e0a\u4e0b\u6587\u643a\u5e26\uff0c\u5982\u8ba2\u5355\u91d1\u989d<\/li>\n<li>\u884d\u751f\u578b\uff1a\u57fa\u672c\u4e0d\u8017\u65f6-\u57fa\u4e8e\u8f93\u5165\u578b\u7279\u5f81\u884d\u751f\uff0c\u5982\u4f9d\u636e\u7ecf\u7eac\u5ea6\u8ba1\u7b97\u8ddd\u79bb<\/li>\n<li>\u5b9e\u65f6\u7edf\u8ba1\u7279\u5f81\uff1a\u57fa\u672c\u4e0d\u8017\u65f6-\u611f\u5174\u8da3\u7684\u53ef\u4ee5\u5173\u6ce8\u6211\u6587\u7ae0 <a href=\"https:\/\/link.segmentfault.com\/?enc=sb1W8kZkKnbQbkW%2BIe3fOA%3D%3D.NmzqUqFgF%2BYknBR%2BHsnLAx4OV3m4NYpTvNCV5F9M7%2BrF7k9INBT8XhmKSvAUyFAMfWgd9UUhdXp3bQCT3hizF0PE4gaawxly2yHM0h0EAKfYwZMF0a2BJvKil0%2FCqQGy8ZwwR7PwCJ32W3RYZRi77W%2ByLnM%2FW0YL7ZFHd7vDwbP2DVdXimjM7i3QAgTEweFpEcCStJWL85YM2BIiYjmbtUlnahDRnpDpbKyOUYA0GDU%3D\" rel=\"nofollow\">Flink \u5728\u98ce\u63a7\u573a\u666f\u5b9e\u65f6\u7279\u5f81\u843d\u5730\u5b9e\u6218<\/a>\uff0c\u8be6\u7ec6\u4ecb\u7ecd<\/li>\n<li>\u67e5\u8be2\u7c7b\uff1a<strong>\u8017\u65f6<\/strong>-\u5982\u4f9d\u636e\u8ba2\u5355\u53f7\u8c03\u4e1a\u52a1 RPC \u63a5\u53e3\u83b7\u53d6\u8ba2\u5355\u660e\u7ec6\u4fe1\u606f\uff0c\u901a\u4fe1 + \u4e1a\u52a1\u672c\u8eab\u8017\u65f6<\/li>\n<li>\u5916\u90e8\u7c7b\uff1a<strong>\u8017\u65f6<\/strong>-\u5982\u7b2c\u4e09\u65b9\u98ce\u63a7\u516c\u53f8\u4ea7\u54c1\uff0c\u540c\u76fe\u3001IPIP\u7b49<\/li>\n<\/ul>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/bVc2oD2\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><br \/>\u7279\u5f81\u540c\u6b65\u83b7\u53d6 &#038; \u5f02\u6b65\u83b7\u53d6\u5bf9\u6bd4\u56fe<\/p>\n<p>\u663e\u7136\uff0c\u6211\u4eec\u9700\u8981\u5e76\u53d1\u6765\u652f\u6491\u6027\u80fd\uff0c\u6838\u5fc3\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"java\">public class DataSourceExecutor {\n\n    private final static ExecutorService executor = new ThreadPoolExecutor(\n            Runtime.getRuntime().availableProcessors() * 8,\n            Runtime.getRuntime().availableProcessors() * 8,\n            0L, TimeUnit.MILLISECONDS,\n            new LinkedBlockingQueue&lt;Runnable&gt;(),\n            new HamThreadFactory(&quot;ds-executor&quot;),\n            new ThreadPoolExecutor.AbortPolicy());\n\n    \/**\n     * \u7279\u5f81\u83b7\u53d6\n     *\n     * @param dataSources\n     *\/\n    public void execute(List&lt;DataSource&gt; dataSources) {\n        List&lt;CompletableFuture&gt; futures = Lists.newArrayList();\n        long timeout = ApolloConfig.getLongProperty(ApolloConfigKey.DS_TIMEOUT_OUTER_KEY, 150L);\n\n        for (DataSource ds : dataSources) {\n            timeout = ds.getExecutionTimeout() &gt; timeout ? ds.getExecutionTimeout() : timeout;\n\n            CompletableFuture&lt;Void&gt; future = CompletableFuture.runAsync(() -&gt; {\n                ds.execute();\n            }, executor);\n            futures.add(future);\n        }\n\n        CompletableFuture&lt;Void&gt; summaryFuture = CompletableFuture.allOf(futures.toArray(new CompletableFuture&lt;?&gt;[]{}));\n        try {\n            summaryFuture.get(timeout, TimeUnit.MILLISECONDS);\n        } catch (InterruptedException | ExecutionException | TimeoutException e) {\n            log.error(&quot;DataSource exec error&quot;, e);\n        }\n    }\n}\n<\/code><\/pre>\n<p>\u548c\u89c4\u5219\u7684\u6279\u91cf\u6267\u884c\u5927\u540c\u5c0f\u5f02\uff0c\u5355\u6b64\u5904\u7528\u5230\u4e86 Java 8 CompletableFuture \u5e76\u53d1\u5de5\u5177\u7c7b\uff0c\u529f\u80fd\u4e0a\u6709\u6240\u589e\u5f3a\uff0c\u4e0b\u6587\u4f1a\u4f7f\u7528\u4ecb\u7ecd\u3002<\/p>\n<h4>\u5b9e\u8df5\u4e09\uff1a\u5206\u5e03\u5f0f\u4efb\u52a1\u8dd1\u6279<\/h4>\n<p>\u5b9a\u65f6\u4efb\u52a1\u5e94\u8be5\u662f\u5de5\u4f5c\u4e2d\u5f88\u5e38\u89c1\u7684\u9700\u6c42\u4e86\uff0c\u5982\u8ba2\u5355\u72b6\u6001\u6d41\u8f6c\u68c0\u6d4b\u3001\u5bf9\u8d26\u7b49\u3002\u4efb\u52a1\u4e00\u822c\u90fd\u662f\u8dd1\u6279\u7684\uff0c\u5373\u5305\u542b\u591a\u4e2a\u5b50\u4efb\u52a1\uff0c\u8be5\u573a\u666f\u5f88\u9002\u5408\u7ebf\u7a0b\u6c60\u4efb\u52a1\u961f\u5217\u5e76\u53d1\u6267\u884c\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/bVc2oD6\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><br \/>\u4efb\u52a1\u961f\u5217\u7ebf\u7a0b\u6c60\u56fe<\/p>\n<p>\u6838\u5fc3\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"java\">public void execute(List&lt;Task&gt; tasks) {\n    tasks.forEach(t -&gt; {\n\n        executor.execute(() -&gt; {\n            try {\n                log.info(&quot;task id: {} begin exec&quot;, t.getId());\n                t.execute();\n            } catch (Throwable e) {\n                log.error(String.format(&quot;task execute error, uid: %s&quot;, t.getId()), e);\n            } finally {\n                log.info(&quot;task id: {} end exec&quot;, t.getId());\n            }\n        });\n\n    });\n}<\/code><\/pre>\n<h3>\u5e76\u53d1\u7f16\u7a0b\u5e38\u7528\u5de5\u5177\u7c7b<\/h3>\n<h4>\u7ebf\u7a0b\u6c60<\/h4>\n<p><strong>\u7ebf\u7a0b\u6c60<\/strong>\uff08\u82f1\u8bed\uff1athread pool\uff09\uff1a\u4e00\u79cd\u7ebf\u7a0b\u4f7f\u7528\u6a21\u5f0f\u3002\u7ebf\u7a0b\u8fc7\u591a\u4f1a\u5e26\u6765\u8c03\u5ea6\u5f00\u9500\uff0c\u8fdb\u800c\u5f71\u54cd\u7f13\u5b58\u5c40\u90e8\u6027\u548c\u6574\u4f53\u6027\u80fd\u3002\u800c\u7ebf\u7a0b\u6c60\u7ef4\u62a4\u7740\u591a\u4e2a\u7ebf\u7a0b\uff0c\u7b49\u5f85\u7740\u76d1\u7763\u7ba1\u7406\u8005\u5206\u914d\u53ef\u5e76\u53d1\u6267\u884c\u7684\u4efb\u52a1\u3002\u8fd9\u907f\u514d\u4e86\u5728\u5904\u7406\u77ed\u65f6\u95f4\u4efb\u52a1\u65f6\u521b\u5efa\u4e0e\u9500\u6bc1\u7ebf\u7a0b\u7684\u4ee3\u4ef7\u3002\u7ebf\u7a0b\u6c60\u4e0d\u4ec5\u80fd\u591f\u4fdd\u8bc1\u5185\u6838\u7684\u5145\u5206\u5229\u7528\uff0c\u8fd8\u80fd\u9632\u6b62\u8fc7\u5206\u8c03\u5ea6\u3002\u53ef\u7528\u7ebf\u7a0b\u6570\u91cf\u5e94\u8be5\u53d6\u51b3\u4e8e\u53ef\u7528\u7684\u5e76\u53d1\u5904\u7406\u5668\u3001\u5904\u7406\u5668\u5185\u6838\u3001\u5185\u5b58\u3001\u7f51\u7edcsockets\u7b49\u7684\u6570\u91cf\u30101\u3011\u3002<\/p>\n<p>J.U.C\u63d0\u4f9b\u7684\u7ebf\u7a0b\u6c60\uff1aThreadPoolExecutor\u7c7b\uff0c\u5e2e\u52a9\u5f00\u53d1\u4eba\u5458\u7ba1\u7406\u7ebf\u7a0b\u5e76\u65b9\u4fbf\u5730\u6267\u884c\u5e76\u884c\u4efb\u52a1\u3002\u4e86\u89e3\u5e76\u5408\u7406\u4f7f\u7528\u7ebf\u7a0b\u6c60\uff0c\u662f\u4e00\u4e2a\u5f00\u53d1\u4eba\u5458\u5fc5\u4fee\u7684\u57fa\u672c\u529f\u3002<\/p>\n<p><strong>\u4efb\u52a1\u8c03\u5ea6<\/strong><br \/>\u5f53\u7528\u6237\u63d0\u4ea4\u4e86\u4efb\u52a1\uff0c\u4efb\u52a1\u7684\u751f\u547d\u5468\u671f\u5c06\u6709\u7ebf\u7a0b\u6c60\u7ba1\u63a7\u3002\u7ebf\u7a0b\u6c60\u5185\u90e8\u5b9e\u9645\u4e0a\u6784\u5efa\u4e86\u4e00\u4e2a\u751f\u4ea7\u8005\/\u6d88\u8d39\u8005\u6a21\u5f0f\uff0c\u7ebf\u7a0b\u4e0e\u4efb\u52a1\u662f\u89e3\u8026\u7684\uff0c\u6ca1\u6709\u5f3a\u5173\u8054\u6027\uff0c\u8fd9\u6709\u5229\u4e8e\u4efb\u52a1\u7684\u7f13\u51b2&#038;\u590d\u7528\u3002\u4e86\u89e3\u7ebf\u7a0b\u6c60\u7684\u7b2c\u4e00\u6b65\u5fc5\u987b\u77e5\u9053\u4efb\u52a1\u7684\u8fd0\u884c\u673a\u5236\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/bVc2oD8\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><br \/>\u4efb\u52a1\u6267\u884c\u56fe<\/p>\n<p><strong>\u4efb\u52a1\u961f\u5217<\/strong><br \/>\u7ebf\u7a0b\u6c60\u7684\u672c\u8d28\u662f\u5bf9\u4efb\u52a1\u548c\u7ebf\u7a0b\u7684\u7ba1\u7406\uff0c\u800c\u505a\u5230\u8fd9\u4e00\u70b9\u7684\u5173\u952e\u662f\u89e3\u8026\u4efb\u52a1\u548c\u7ebf\u7a0b\uff0c\u4e0d\u8ba9\u4e24\u8005\u76f4\u63a5\u5173\u8054\uff0c\u624d\u80fd\u505a\u5230\u540e\u7eed\u7684\u5408\u7406\u5206\u914d\u5de5\u4f5c\u3002\u7ebf\u7a0b\u6c60\u4e2d\u662f\u4ee5\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u6a21\u5f0f\uff0c\u901a\u8fc7\u4e00\u4e2a\u963b\u585e\u961f\u5217\u6765\u5b9e\u73b0\u7684\u3002\u963b\u585e\u961f\u5217\u7f13\u5b58\u4efb\u52a1\uff0c\u5de5\u4f5c\u7ebf\u7a0b\u4ece\u963b\u585e\u961f\u5217\u4e2d\u83b7\u53d6\u4efb\u52a1\u3002<\/p>\n<p>\u963b\u585e\u961f\u5217\uff08BlockingQueue\uff09\u5728\u961f\u5217\u7684\u57fa\u7840\u4e0a\u65b0\u589e\u4e24\u4e2a\u7279\u6027\u3002<\/p>\n<ul>\n<li>\u961f\u5217\u4e3a\u7a7a\u65f6\uff0c\u83b7\u53d6\u5143\u7d20\u7684\u7ebf\u7a0b\u4f1a\u7b49\u5f85\u961f\u5217\u53d8\u4e3a\u975e\u7a7a<\/li>\n<li>\u961f\u5217\u6ee1\u65f6\uff0c\u5b58\u50a8\u5143\u7d20\u7684\u7ebf\u7a0b\u4f1a\u7b49\u5f85\u961f\u5217\u53ef\u7528<\/li>\n<\/ul>\n<p>\u963b\u585e\u961f\u5217\u5e38\u7528\u4e8e\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u7684\u573a\u666f\uff0c\u751f\u4ea7\u8005\u662f\u5f80\u961f\u5217\u91cc\u6dfb\u52a0\u5143\u7d20\u7684\u7ebf\u7a0b\uff0c\u6d88\u8d39\u8005\u662f\u4ece\u961f\u5217\u91cc\u62ff\u5143\u7d20\u7684\u7ebf\u7a0b\u3002\u963b\u585e\u961f\u5217\u5c31\u662f\u751f\u4ea7\u8005\u5b58\u653e\u5143\u7d20\u7684\u5bb9\u5668\uff0c\u800c\u6d88\u8d39\u8005\u4e5f\u53ea\u4ece\u5bb9\u5668\u91cc\u62ff\u5143\u7d20\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/bVc2oD9\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><br \/>\u963b\u585e\u961f\u5217\u793a\u610f\u56fe<\/p>\n<p>\u963b\u585e\u961f\u5217\u5982\u4e0b\u8868\u53ef\u9009\u62e9\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>ArrayBlockingQueue<\/th>\n<th>\u6709\u754c\uff1b\u6570\u7ec4\u5b9e\u73b0\uff1bFIFO\uff1b<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>LinkedBlockingQueue<\/td>\n<td>\u6709\u754c\uff08\u9ed8\u8ba4\u957f\u5ea6Integer.MAX_VALUE\uff0c\u4e0d\u5c0f\u5fc3\u5c31\u4f1a\u5185\u5b58\u6ea2\u51fa\uff09\uff1b\u94fe\u8868\u5b9e\u73b0\uff1bFIFO\uff1b<\/td>\n<\/tr>\n<tr>\n<td>PriorityBlockingQueue<\/td>\n<td>\u65e0\u754c\uff1b\u5e73\u8861\u4e8c\u53c9\u6811\u5b9e\u73b0\uff1b\u6392\u5e8f<\/td>\n<\/tr>\n<tr>\n<td>DelayQueue<\/td>\n<td>\u540cPriorityBlockingQueue\uff1b\u5bf9\u8c61\u53ea\u80fd\u5728\u5176\u5230\u671f\u65f6\u624d\u80fd\u4ece\u961f\u5217\u4e2d\u53d6\u8d70<\/td>\n<\/tr>\n<tr>\n<td>SynchronousQueue<\/td>\n<td>\u4e0d\u5b58\u50a8\u5143\u7d20\uff1b\u6ca1\u4e00\u4e2aput\u64cd\u4f5c\u9700\u7b49\u5f85take\u64cd\u4f5c<\/td>\n<\/tr>\n<tr>\n<td>LinkedTransferQueue<\/td>\n<td>\u6709\u754c\uff1b\u4f18\u52bf\u5728\u4e8e\u76f8\u5bf9LinkedBlockingQueue\u964d\u4f4e\u4e86\u9501\u7684\u7c92\u5ea6\uff0c\u6027\u80fd\u66f4\u9ad8<\/td>\n<\/tr>\n<tr>\n<td>LinkedBlockingDeque<\/td>\n<td>\u76f8\u5bf9LinkedBlockingQueue\u5b9e\u73b0\u53cc\u7aef\u963b\u585e\uff1b\u9501\u7c92\u5ea6\u964d\u4f4e\uff0c\u6027\u80fd\u8f83\u597d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u4efb\u52a1\u62d2\u7edd<\/strong><br \/>\u7ebf\u7a0b\u6c60\u81ea\u6211\u4fdd\u62a4\u7194\u65ad\u90e8\u5206\uff0c\u5f53\u4efb\u52a1\u6709\u754c\u7f13\u5b58\u961f\u5217\u5df2\u6ee1\uff0c\u8bc1\u660e\u7ebf\u7a0b\u6c60\u5df2\u7ecf\u8d85\u8d1f\u8377\u8fd0\u8f6c\uff0c\u5904\u7406\u4e0d\u8fc7\u6765\u4e86\u3002\u6b64\u65f6\u9700\u8981\u62d2\u7edd\u65b0\u8fdb\u4efb\u52a1\uff0c\u91c7\u7528\u8bbe\u7f6e\u7684\u62d2\u63a5\u7b56\u7565\uff0c\u4ee5\u4fdd\u62a4\u7ebf\u7a0b\u6c60\u3002<\/p>\n<p>\u7528\u6237\u53ef\u4ee5\u9009\u62e9JDK\u63d0\u4f9b\u7684\u56db\u79cd\u62d2\u7edd\u7b56\u7565\uff0c\u6216\u8005\u81ea\u5b9a\u4e49\u5b9e\u73b0RejectedExecutionHandler\u63a5\u53e3\u5373\u53ef<\/p>\n<table>\n<thead>\n<tr>\n<th>ThreadPoolExecutor.AbortPolicy()<\/th>\n<th>\u4e22\u5f03\u4efb\u52a1\u5e76\u629b\u51faRejectedExecutionException\u5f02\u5e38\uff1b\u7ebf\u7a0b\u6c60\u9ed8\u8ba4\u62d2\u7edd\u7b56\u7565\uff1b\u5173\u952e\u4e1a\u52a1\u5e94\u4f7f\u7528\u6b64\u5f02\u5e38\u7b56\u7565\uff0c\u4ee5\u4e86\u89e3\u7ebf\u7a0b\u6c60\u7684\u5065\u5eb7\u72b6\u51b5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>ThreadPoolExecutor.CallerRunsPolicy()<\/td>\n<td>\u7531\u4e3b\u7ebf\u7a0b\u53bb\u6267\u884c\u5f53\u524d\u4efb\u52a1<\/td>\n<\/tr>\n<tr>\n<td>ThreadPoolExecutor.DiscardOldestPolicy()<\/td>\n<td>\u4e22\u5f03\u8001\u4efb\u52a1\uff0c\u91cd\u65b0\u63d0\u4ea4\u4efb\u52a1\uff1b\u751f\u4ea7\u4e0d\u5efa\u8bae\u4f7f\u7528\uff0c\u6709\u98ce\u9669<\/td>\n<\/tr>\n<tr>\n<td>ThreadPoolExecutor.DiscardPolicy()<\/td>\n<td>\u4e22\u5f03\u4efb\u52a1&#038;\u4e0d\u629b\u51fa\u5f02\u5e38\uff1b\u751f\u4ea7\u4e0d\u5efa\u8bae\u4f7f\u7528\uff0c\u4e0d\u6613\u53d1\u73b0\u95ee\u9898<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>CountDownLatch\u2014\u2014\u540c\u6b65\u8ba1\u6570\u5668<\/h4>\n<p>CountDownLatch\u5185\u90e8\u4f7f\u7528\u8ba1\u6570\u5668\u5b9e\u73b0\uff0c\u521d\u59cb\u5316\u65f6\u8ba1\u6570\u5668\u6570\u91cf\u7b49\u4e8e\u9700\u8981\u5904\u7406\u7684\u7b49\u5f85\u7ebf\u7a0b\u6570\u91cf\uff0c\u5f53\u6bcf\u4e2a\u7ebf\u7a0b\u6267\u884c\u5b8c\u6bd5\u540e\u9700\u8981\u5c06\u8ba1\u6570\u5668\u51cf\u4e00\uff0c\u5f53\u8ba1\u6570\u5668\u52300\u540e\uff0c\u4ee3\u8868\u9700\u8981\u7b49\u5f85\u6267\u884c\u7684\u7ebf\u7a0b\u5df2\u5168\u90e8\u6267\u884c\u5b8c\u6bd5\uff0c\u6b64\u65f6\u4f1a\u5524\u9192\u4e3b\u7ebf\u7a0b\u7ee7\u7eed\u6267\u884c\u4e3b\u7ebf\u4efb\u52a1\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/bVc2oEa\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><br \/>CountDownLatch\u6d41\u7a0b\u56fe<\/p>\n<p>\u5e38\u7528\u573a\u666f\uff1a<\/p>\n<ul>\n<li>1\u7b49N\uff1a\u7ed3\u5408\u7ebf\u7a0b\u6c60\u91ca\u653eCPU\u7b97\u529b\uff0c\u5982\u9996\u9875\u590d\u6742\u4fe1\u606f\u6d41\u6210\u7cbe\uff0c\u53ef\u4ee5\u5206\u5e03\u52a0\u8f7d\u5404\u6a21\u5757\u4fe1\u606f\uff0c\u8ba1\u6570\u7ed3\u675f\u540e\u5728\u4ea4\u7531\u4e3b\u7ebf\u7a0b\u7ed3\u6784\u5316\u6570\u636e\u8fd4\u56de<\/li>\n<li>\u6700\u574f\u5339\u914d\uff1a\u54ea\u4e00\u4e2a\u7ebf\u7a0b\u6267\u884c\u5b8c\u6bd5\uff0c\u53ef\u4ee5\u7acb\u5373\u91ca\u653ecnt\u6570\u91cf\u81f30\uff0c\u901a\u77e5\u4e3b\u7ebf\u7a0b\u6267\u884c<\/li>\n<\/ul>\n<p>\u6838\u5fc3\u4ee3\u7801\uff1a<\/p>\n<pre><code class=\"java\">public void demo() {\n    List&lt;Task&gt; tasks = ...\n    final CountDownLatch countDownLatch = new CountDownLatch(10);\n    tasks.forEach(task -&gt; {\n\n        try {\n            \/\/ \u81ea\u5df1\u7684\u5b50\u7ebf\u7a0b\u903b\u8f91\n        } catch (Throwable e) {\n            \/\/ \u6709\u65f6 Exception \u63a5\u4e0d\u5230\u7684\u5f02\u5e38\uff0c\u5efa\u8bae\u7528 Throwable\n        } finally {\n            countDownLatch.countDown();\n        }\n\n    });\n\n    try {\n        countDownLatch.await(100, TimeUnit.MILLISECONDS);\n    } catch (InterruptedException e) {\n        log.error(&quot;countDownLatch InterruptedException&quot;, e);\n    }\n\n}<\/code><\/pre>\n<h4>CompletableFuture<\/h4>\n<p>Java \u5728 1.8 \u7248\u672c\u63d0\u4f9b\u4e86 CompletableFuture \u6765\u652f\u6301\u5f02\u6b65\u7f16\u7a0b\uff0cCompletableFuture \u7684\u529f\u80fd\u7740\u5b9e\u8ba9\u4eba\u611f\u5230\u9707\u64bc\u3002\u4ed6\u7684\u590d\u6742\u5ea6\u5e94\u8be5\u4e5f\u662f\u6211\u89c1\u8fc7\u7684\u6700\u590d\u6742\u4e4b\u4e00\u4e86\u3002<\/p>\n<p>\u6211\u4eec\u770b\u4e2a\u4f8b\u5b50\u6765\u76f4\u89c2\u611f\u53d7\u4e0b CompletableFurure \u7684\u5a01\u529b<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/bVc2oEb\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><br \/>CompletableFuture \u4e4b\u897f\u7ea2\u67ff\u7092\u86cb<\/p>\n<pre><code class=\"java\">\/\/ \u6b65\u9aa4\u4e00\uff1a\u51c6\u5907\u897f\u7ea2\u67ff\nCompletableFuture&lt;String&gt; f1 =\n  CompletableFuture.supplyAsync(() -&gt; {\n    System.out.println(&quot;\u6d17\u897f\u7ea2\u67ff&quot;);\n\n    System.out.println(&quot;\u5207\u5b83&quot;);\n\n    return &quot;\u5207\u597d\u7684\u897f\u7ea2\u67ff&quot;;\n  });\n\n\/\/ \u6b65\u9aa4\u4e8c\uff1a\u51c6\u5907\u9e21\u86cb\nCompletableFuture&lt;String&gt; f2 =\n  CompletableFuture.supplyAsync(() -&gt; {\n    System.out.println(&quot;\u6d17\u9e21\u86cb&quot;);\n\n    System.out.println(&quot;\u714e\u9e21\u86cb&quot;);\n\n    return &quot;\u714e\u597d\u7684\u9e21\u86cb&quot;;\n  });\n\/\/ \u6b65\u9aa4\u4e09\uff1a\u7092\u9e21\u86cb\nCompletableFuture&lt;String&gt; f3 =\n  f1.thenCombine(f2, (__, tf) -&gt; {\n    System.out.println(&quot;\u7206\u7092&quot;);\n    return &quot;\u897f\u7ea2\u67ff\u7092\u9e21\u86cb&quot;;\n  });\n\n\/\/ \u7b49\u5f85\u4efb\u52a1 3 \u6267\u884c\u7ed3\u679c\nSystem.out.println(f3.join());<\/code><\/pre>\n<p>CompletableFuture \u65e8\u5728\u89e3\u51b3\u591a\u7ebf\u7a0b\u4e4b\u95f4\u7684\u590d\u6742\u5b9e\u73b0\u903b\u8f91\uff0c\u5982\u4e0a\u6240\u793a\uff0c\u5176\u5b9e\u90fd\u662f\u53ea\u5305\u542b\u4e86\u4e1a\u52a1\u5b9e\u73b0\u7684\u903b\u8f91\uff0c\u5e76\u53d1\u7f16\u7a0b\u7684\u903b\u8f91\u5df2\u7ecf\u88ab Lamda \u7f16\u7a0b\u5de7\u5999\u7684\u89c4\u907f\u4e86\u3002\u5373\u7528\u6700\u5c11\u7684\u4ee3\u7801\u5e72\u6700\u786c\u7684\u4e8b\uff0c\u5f88\u5b8c\u7f8e\u3002<\/p>\n<p>\u6b64\u5904\u4e0d\u5bf9 CompletableFuture \u4f5c\u8be6\u7ec6\u7684\u63cf\u8ff0\uff0c\u5982\u679c\u611f\u5174\u8da3\u53ef\u4ee5\u5173\u6ce8\u6211\uff0c\u56e0\u4e3a CompletableFuture \u5b9e\u73b0\u5373\u4f7f\u7528\u4e00\u7bc7\u6587\u7ae0\u90fd\u4e0d\u4e00\u5b9a\u80fd\u8bf4\u5b8c\u3002<\/p>\n<h3>\u5e38\u89c1\u5e76\u53d1\u95ee\u9898\u53ca\u89e3\u51b3<\/h3>\n<h4>\u6b7b\u9501&#038;\u5b9a\u4f4d<\/h4>\n<p>\u6b7b\u9501\uff08deadlock\uff09\uff0c\u5f53\u4e24\u4e2a\u4ee5\u4e0a\u7684\u8fd0\u7b97\u5355\u5143\uff0c\u53cc\u65b9\u90fd\u5728\u7b49\u5f85\u5bf9\u65b9\u505c\u6b62\u6267\u884c\uff0c\u4ee5\u83b7\u53d6\u7cfb\u7edf\u8d44\u6e90\uff0c\u4f46\u662f\u6ca1\u6709\u4e00\u65b9\u63d0\u524d\u9000\u51fa\u65f6\uff0c\u5c31\u79f0\u4e3a\u6b7b\u9501\u3002\u30101\u3011<\/p>\n<p>\u6b7b\u9501\u7684\u56db\u4e2a\u6761\u4ef6\u662f\uff1a<\/p>\n<ul>\n<li><strong>\u7981\u6b62\u62a2\u5360<\/strong>\uff08no preemption\uff09\uff1a\u7cfb\u7edf\u8d44\u6e90\u4e0d\u80fd\u88ab\u5f3a\u5236\u4ece\u4e00\u4e2a\u8fdb\u7a0b\u4e2d\u9000\u51fa\u3002<\/li>\n<li><strong>\u6301\u6709\u548c\u7b49\u5f85<\/strong>\uff08hold and wait\uff09\uff1a\u4e00\u4e2a\u8fdb\u7a0b\u53ef\u4ee5\u5728\u7b49\u5f85\u65f6\u6301\u6709\u7cfb\u7edf\u8d44\u6e90\u3002<\/li>\n<li><strong>\u4e92\u65a5<\/strong>\uff08mutual exclusion\uff09\uff1a\u8d44\u6e90\u53ea\u80fd\u540c\u65f6\u5206\u914d\u7ed9\u4e00\u4e2a\u884c\u7a0b\uff0c\u65e0\u6cd5\u591a\u4e2a\u884c\u7a0b\u5171\u4eab\u3002<\/li>\n<li>\n<p><strong>\u5faa\u73af\u7b49\u5f85<\/strong>\uff08circular waiting\uff09\uff1a\u4e00\u7cfb\u5217\u8fdb\u7a0b\u4e92\u76f8\u6301\u6709\u5176\u4ed6\u8fdb\u7a0b\u6240\u9700\u8981\u7684\u8d44\u6e90\u3002<\/p>\n<p><strong>\u5b9a\u4f4d<\/strong><\/p>\n<pre><code class=\"shell\">jps\njstack pid\n\n\n\/\/ \u4e0a\u9762\u7684\u4fe1\u606f\u622a\u53d6\n\nFound one Java-level deadlock:\n=============================\n&quot;Thread-1&quot;:\nwaiting to lock monitor 0x00007fcc68023f58 (object 0x0000000795ea0c00, a java.lang.Object),\nwhich is held by &quot;Thread-0&quot;\n&quot;Thread-0&quot;:\nwaiting to lock monitor 0x00007fcc68022ab8 (object 0x0000000795ea0c10, a java.lang.Object),\nwhich is held by &quot;Thread-1&quot;\n<\/code><\/pre>\n<p>jps \u5b9a\u4f4d\u8fd0\u884c\u7684 java \u7a0b\u5e8f\uff0c\u7136\u540e\u5229\u7528 jstack pid \u6253\u5370\u7ebf\u7a0b\u4fe1\u606f\uff0c\u62c9\u5012\u6700\u4e0b\u9762\u5f88\u660e\u663e\u53d1\u73b0\u6709\u63d0\u793a deadlock\uff0c\u518d\u4f9d\u636e\u7ebf\u7a0b\u53f7 0x00007fcc68023f58 \u5bfb\u627e\u5230\u5bf9\u5e94\u7684\u7ebf\u7a0b\u5373\u53ef\u5206\u6790\u662f\u54ea\u4e00\u6bb5\u4ee3\u7801\u5f15\u53d1\u7684\u95ee\u9898\u3002<\/p>\n<\/li>\n<\/ul>\n<h4>\u6027\u80fd\u8c03\u4f18<\/h4>\n<p>Java \u5e76\u53d1\u591a\u7ebf\u7a0b\u7f16\u7a0b\uff0c\u6211\u4eec\u9996\u9009\u7684\u5de5\u5177\u4e00\u5b9a\u662f\u7ebf\u7a0b\u6c60\u3002\u7ebf\u7a0b\u6c60\u4f7f\u7528\u9762\u4e34\u7684\u6838\u5fc3\u7684\u95ee\u9898\u5728\u4e8e\uff1a<strong>\u7ebf\u7a0b\u6c60\u7684\u53c2\u6570\u5e76\u4e0d\u597d\u914d\u7f6e\uff01<\/strong><\/p>\n<p>\u4f60\u662f\u5426\u4f1a\u4e5f\u9047\u5230\u8fc7\u6309\u7167\u7ecf\u9a8c\u53bb\u9884\u4f30\u7ebf\u4e0a\u67d0\u4e2a\u573a\u666f\u7ebf\u7a0b\u6c60\u6700\u5c0f\u6d3b\u8dc3\u7ebf\u7a0b\u548c\u6700\u5927\u6d3b\u8dc3\u7ebf\u7a0b\u6570\u4e0d\u51c6\u6216\u5931\u8bef\u3002\u4e8b\u5b9e\u4e0a\u5e76\u65e0\u7ebf\u7a0b\u6c60\u901a\u7528\u7684\u8ba1\u7b97\u516c\u5f0f\uff0c\u56e0\u4e3a\u4e00\u53f0\u673a\u5668\u4e0a\u5e76\u4e0d\u662f\u53ea\u6709\u4f60\u7684\u4e00\u4e2a\u670d\u52a1\uff0c\u4e14\u4e00\u4e2a\u670d\u52a1\u5185\u5e76\u4e0d\u662f\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u6c60\uff0c\u5982\u679c\u6309\u7167 I\/O\u5bc6\u96c6 \u6216\u8005 CPU\u5bc6\u96c6 \u9884\u4f30\uff0c\u8fd8\u662f\u514d\u4e0d\u4e86\u53cd\u590d\u8c03\u8bd5\u7684\u82e6\u3002<\/p>\n<p>\u90a3\u4e48\u6211\u4eec\u662f\u5426\u53ef\u4ee5\u5c06\u4fee\u6539\u7ebf\u7a0b\u6c60\u53c2\u6570\u7684\u6210\u672c\u964d\u4e0b\u6765\uff0c\u8fd9\u6837\u81f3\u5c11\u53ef\u4ee5\u53d1\u751f\u6545\u969c\u7684\u65f6\u5019\u53ef\u4ee5\u5feb\u901f\u8c03\u6574\u4ece\u800c\u7f29\u77ed\u6545\u969c\u6062\u590d\u7684\u65f6\u95f4\u5462\uff1f<\/p>\n<p>\u672c\u7bc7\u4e0d\u4f1a\u591a\u8bb2\u52a8\u6001\u7ebf\u7a0b\u6c60\u7684\u67b6\u6784\u8bbe\u8ba1\uff0c\u611f\u5174\u8da3\u7684\u53ef\u4ee5\u5173\u6ce8\u6211\uff0c\u540e\u7eed\u4f1a\u53d1\u6587\uff0c\u6b64\u5904\u53ea\u7ed9\u51fa\u4e00\u4e2a\u5927\u6982\u7684\u601d\u8def\uff1a<\/p>\n<ul>\n<li>\u52a8\u6001\u8c03\u53c2\uff1a\u652f\u6301\u7ebf\u7a0b\u6c60\u6838\u5fc3\u53c2\u6570\u52a8\u6001\u8c03\u6574\uff0c\u6700\u5c0f\/\u6700\u5927\u6838\u5fc3\u7ebf\u7a0b\u6570<\/li>\n<li>\u4efb\u52a1\u76d1\u63a7\uff1a\u4e3b\u8981\u76d1\u63a7\u963b\u585e\u961f\u5217\u5806\u79ef \u548c \u5355\u6b21\u7ebf\u7a0b\u6267\u884c\u8017\u65f6 95 99 \u7ebf<\/li>\n<li>\u544a\u8b66\uff1a\u6709\u6f5c\u5728\u538b\u529b\u53ca\u65f6\u9884\u8b66\u4fee\u6b63<\/li>\n<li>\u64cd\u4f5c\u901a\u77e5&#038;\u9274\u6743\uff1a\u751f\u4ea7\u64cd\u4f5c\u5f88\u5371\u9669\uff0c\u9700\u8c28\u614e<\/li>\n<\/ul>\n<h4>\u5b8c\u5584\u76d1\u63a7<\/h4>\n<p>\u4efb\u4f55\u7cfb\u7edf\u7684\u8fd0\u884c\u90fd\u79bb\u4e0d\u5f00\u76d1\u63a7\uff0c\u53ea\u662f\u9897\u7c92\u5ea6\u7c97\u7ec6\u7684\u95ee\u9898\uff0c\u5e76\u53d1\u573a\u666f\uff0c\u6211\u4eec\u5c24\u5176\u9700\u8981\u5173\u6ce8\u670d\u52a1\u7ebf\u7a0b\u7684\u76d1\u63a7\u72b6\u51b5\uff0c\u5c24\u5176\u662f\u6d3b\u8dc3\u7ebf\u7a0b\u6570\u3001\u961f\u5217\u5806\u79ef\u957f\u5ea6\u3001\u5e73\u5747\u8017\u65f6\u3001\u541e\u5410\u91cf\u7b49\u91cd\u8981\u6307\u6807\u3002\u53d1\u751f\u9884\u8b66\u65f6\u80fd\u53ca\u65f6\u901a\u77e5\u76f8\u5e94\u7684\u5f00\u53d1\u4eba\u5458\u964d\u7ea7\u5904\u7406\uff0c\u4ea6\u53ef\u81ea\u52a8\u7194\u65ad\uff0c\u4fdd\u62a4\u4e3b\u670d\u52a1\u3002<\/p>\n<h3>\u5f80\u671f\u7cbe\u5f69<\/h3>\n<blockquote><p>\u4e2a\u4eba\u6280\u672f\u535a\u5ba2\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=81k9%2FQdVqFKd%2FbVNj9KSYQ%3D%3D.RIITNmVWbS7lNpzVT0o5Ix9I%2FAUp%2F8wkLPT3C%2BluzP0%3D\" rel=\"nofollow\">https:\/\/jifuwei.github.io\/<\/a><br \/>\u516c\u4f17\u53f7\uff1a\u662f\u5495\u5495\u9e21<\/p><\/blockquote>\n<ul>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=18IZEC1kZx%2BvVm02IcHOHA%3D%3D.B20rKN5v%2FUVV%2B0D1aLxsqHT0KZjA0lYnz9umM3SJ%2FonurQmpA6BAV%2B6MNRciygFfYxsfzAjK4bSSEQ25junwy9yZoqqRxVtJd1I5xW%2F%2FrUUZIH1Uy%2BheXTnpIkICTconyUgYXUq%2BthzefC8U37%2Bd0ygIoamQOnoDwq7DWH0uAyg4cW79MIvVcqXfaMfi5oW90Z5bjIVVCtq5xKpDhmGulg%3D%3D\" rel=\"nofollow\">\u6027\u80fd\u8c03\u4f18\u2014\u2014\u5c0f\u5c0f\u7684log\u5927\u5927\u7684\u5751<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=mIIJSNEa%2BqRnHPG2lCmBgA%3D%3D.J1Vzgj5oJgxia3TYwTfCq7sbYnQnzAk90dBCGuRpyHgxrikxC8wa%2FI1G79GwkgxcpeGZJ84KtIBtxF7xF7Oy7AYXAGz2oqYmP4KVZxu859bNXAKqimkuZ67zet8sJDOO%2FF1EON7mDWtkn7OUTxs2apnrHWo05qXqlUHt%2BgaRQiKJjrvz6%2FXzr%2Bh4vye%2FRP26\" rel=\"nofollow\">\u6027\u80fd\u4f18\u5316\u5fc5\u5907\u2014\u2014\u706b\u7130\u56fe<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=Bei77DO9hb1MyzuXKPh6gg%3D%3D.Xv7LGloGdEKOrr8jR8DgL17qi5VObDb2AyWqvfSXbtqOPa4U9HvHxk1pN6LwKL8Hd3kOK4axievJG37%2FNj2L%2BuMnHwrTmiN2prVeqIkqeAVrRzsyilqauh%2FZ49uCSXykK%2F9%2F7KQPsJnxEhcRYHX7H6XlydeVmDkyaiud2tEkNFg6P77f5XLY6YrNeOtvIzF62G6v1UaQgc%2BPHtoNm9Z5PNFC0w2TI4MBeXzCq7uWPb4%3D\" rel=\"nofollow\">Flink \u5728\u98ce\u63a7\u573a\u666f\u5b9e\u65f6\u7279\u5f81\u843d\u5730\u5b9e\u6218<\/a><\/li>\n<\/ul>\n<blockquote><p>\u672c\u6587\u53c2\u4e0e\u4e86<a href=\"https:\/\/segmentfault.com\/a\/1190000042453662\">\u601d\u5426\u6280\u672f\u5f81\u6587<\/a>\uff0c\u6b22\u8fce\u6b63\u5728\u9605\u8bfb\u7684\u4f60\u4e5f\u52a0\u5165\u3002<\/p><\/blockquote>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000042478066\">https:\/\/segmentfault.com\/a\/1190000042478066<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u80cc\u666f\u4ecb\u7ecd 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[&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[],"class_list":["post-10006599","post","type-post","status-publish","format-standard","hentry"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006599","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10006599"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006599\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10006599"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10006599"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10006599"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}