{"id":39969,"date":"2025-05-26T22:01:11","date_gmt":"2025-05-26T14:01:11","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/39969.html"},"modified":"2025-05-26T22:01:11","modified_gmt":"2025-05-26T14:01:11","slug":"%e5%a6%82%e4%bd%95%e6%8f%90%e9%ab%98%e6%9c%8d%e5%8a%a1%e5%99%a8%e7%9a%84qps%e6%9d%a5%e5%ba%94%e5%af%b9618%e6%b4%bb%e5%8a%a8%e7%9a%84%e5%b9%b6%e5%8f%91%e6%b5%81%e9%87%8f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/39969.html","title":{"rendered":"\u5982\u4f55\u63d0\u9ad8\u670d\u52a1\u5668\u7684QPS\u6765\u5e94\u5bf9618\u6d3b\u52a8\u7684\u5e76\u53d1\u6d41\u91cf"},"content":{"rendered":"<p>\u3000\u3000\u5728\u7535\u5546\u884c\u4e1a&#xff0c;618\u5927\u4fc3\u662f\u7ee7\u53cc\u5341\u4e00\u4e4b\u540e\u6700\u91cd\u8981\u7684\u4e00\u6b21\u201c\u6d41\u91cf\u5927\u6218\u201d\u3002\u5927\u91cf\u7528\u6237\u5728\u77ed\u65f6\u95f4\u5185\u6d8c\u5165\u7f51\u7ad9\u4e0b\u5355\u3001\u62a2\u8d2d&#xff0c;\u670d\u52a1\u5668\u9762\u4e34\u524d\u6240\u672a\u6709\u7684\u5e76\u53d1\u538b\u529b\u3002QPS(Queries Per Second&#xff0c;\u5373\u6bcf\u79d2\u8bf7\u6c42\u6570)\u4f5c\u4e3a\u8861\u91cf\u670d\u52a1\u5668\u5904\u7406\u80fd\u529b\u7684\u91cd\u8981\u6307\u6807&#xff0c;\u76f4\u63a5\u5173\u7cfb\u5230\u7528\u6237\u4f53\u9a8c\u548c\u4e1a\u52a1\u6536\u5165\u3002\u672c\u6587\u5c06\u4ece\u6280\u672f\u67b6\u6784\u3001\u7cfb\u7edf\u8c03\u4f18\u3001\u8f6f\u786c\u8d44\u6e90\u914d\u7f6e\u7b49\u591a\u4e2a\u7ef4\u5ea6&#xff0c;\u6df1\u5165\u63a2\u8ba8\u5982\u4f55\u6709\u6548\u63d0\u9ad8\u670d\u52a1\u5668\u7684QPS&#xff0c;\u5e94\u5bf9618\u6d3b\u52a8\u5e26\u6765\u7684\u6d41\u91cf\u6d2a\u5cf0\u3002<\/p>\n<p>\u3000\u3000\u4e00\u3001\u7406\u89e3QPS\u4e0e\u5176\u5f71\u54cd\u56e0\u7d20<\/p>\n<p>\u3000\u3000QPS\u662f\u6307\u670d\u52a1\u5668\u6bcf\u79d2\u949f\u80fd\u591f\u5904\u7406\u7684\u8bf7\u6c42\u6570\u91cf&#xff0c;\u5176\u9ad8\u4f4e\u53d7\u591a\u4e2a\u5173\u952e\u56e0\u7d20\u5f71\u54cd&#xff1a;<\/p>\n<ul>\n<li>CPU\u5904\u7406\u80fd\u529b<\/li>\n<li>\u5e94\u7528\u903b\u8f91\u590d\u6742\u5ea6<\/li>\n<li>\u6570\u636e\u5e93\u54cd\u5e94\u901f\u5ea6<\/li>\n<li>\u7f51\u7edc\u5e26\u5bbd\u548c\u5ef6\u8fdf<\/li>\n<li>\u4e2d\u95f4\u4ef6(\u5982\u7f13\u5b58\u3001\u961f\u5217)\u7684\u914d\u7f6e<\/li>\n<li>\u64cd\u4f5c\u7cfb\u7edf\u548c\u5185\u6838\u53c2\u6570<\/li>\n<\/ul>\n<p>\u3000\u3000\u5728618\u6d3b\u52a8\u4e2d&#xff0c;\u8bf7\u6c42\u7c7b\u578b\u5305\u62ec\u9875\u9762\u6d4f\u89c8\u3001\u5546\u54c1\u8be6\u60c5\u67e5\u8be2\u3001\u4e0b\u5355\u8bf7\u6c42\u3001\u652f\u4ed8\u8df3\u8f6c\u3001\u5e93\u5b58\u6838\u51cf\u7b49&#xff0c;\u6d89\u53ca\u94fe\u8def\u957f\u3001\u8bf7\u6c42\u9891\u7e41\u3001\u66f4\u65b0\u5bc6\u96c6&#xff0c;\u8fd9\u5bf9 QPS \u63d0\u51fa\u6781\u9ad8\u8981\u6c42\u3002<\/p>\n<p>\u3000\u3000\u4e8c\u3001\u524d\u7aef\u9650\u6d41&#xff1a;\u7f13\u89e3\u8bf7\u6c42\u6d2a\u5cf0\u7b2c\u4e00\u6b65<\/p>\n<p>\u3000\u3000\u9ad8\u5e76\u53d1\u5e76\u4e0d\u610f\u5473\u7740\u6240\u6709\u8bf7\u6c42\u90fd\u5fc5\u987b\u5b9e\u65f6\u5904\u7406\u3002\u9002\u5f53\u7684\u524d\u7aef\u9650\u6d41&#xff0c;\u53ef\u4ee5\u907f\u514d\u540e\u7aef\u88ab\u538b\u57ae&#xff1a;<\/p>\n<p>\u3000\u3000\u63a5\u53e3\u9650\u901f&#xff1a;\u4f7f\u7528Nginx\u3001Kong\u7b49\u53cd\u5411\u4ee3\u7406&#xff0c;\u5bf9\u6bcf\u4e2aIP\u6216\u7528\u6237\u5355\u4f4d\u65f6\u95f4\u8bf7\u6c42\u6570\u9650\u6d41;<\/p>\n<p>\u3000\u3000\u8bf7\u6c42\u6392\u961f&#xff1a;\u5c06\u77ac\u65f6\u8bf7\u6c42\u8fdb\u5165\u7b49\u5f85\u961f\u5217&#xff0c;\u7528\u6237\u4f53\u9a8c\u7a0d\u6709\u5ef6\u8fdf&#xff0c;\u4f46\u7cfb\u7edf\u7a33\u5b9a;<\/p>\n<p>\u3000\u3000\u6ed1\u52a8\u7a97\u53e3\u7b97\u6cd5&#xff1a;\u5bf9\u7528\u6237\u8bf7\u6c42\u9891\u6b21\u505a\u7b97\u6cd5\u7ea7\u63a7\u5236&#xff0c;\u9632\u6b62\u6076\u610f\u5237\u63a5\u53e3\u3002<\/p>\n<p>\u3000\u3000\u5b9e\u8df5\u5efa\u8bae&#xff1a;\u5982\u6dd8\u5b9d\u3001\u4eac\u4e1c\u4f1a\u5728\u5927\u4fc3\u79d2\u6740\u9875\u63d0\u524d\u52a0\u8f7d\u6570\u636e&#xff0c;\u5e76\u9650\u5236\u4e0b\u5355\u6309\u94ae\u5f00\u542f\u65f6\u95f4&#xff0c;\u6709\u6548\u5e73\u6ed1\u6d41\u91cf\u5165\u53e3\u3002<\/p>\n<p>\u3000\u3000\u4e09\u3001\u90e8\u7f72\u7f13\u5b58\u7cfb\u7edf&#xff1a;\u51cf\u5c11\u540e\u7aef\u538b\u529b<\/p>\n<p>\u3000\u3000\u7f13\u5b58\u662f\u63d0\u9ad8 QPS \u7684\u5173\u952e\u6280\u672f&#xff0c;\u4f18\u5148\u8003\u8651\u4ee5\u4e0b\u51e0\u7c7b\u7f13\u5b58\u7b56\u7565&#xff1a;<\/p>\n<p>\u3000\u30001. \u9875\u9762\u7ea7\u7f13\u5b58&#xff1a;\u5c06\u6574\u4e2a\u9759\u6001\u9875\u9762\u6216\u90e8\u5206\u6a21\u5757\u7f13\u5b58\u5230 CDN \u6216 Nginx \u4e0a&#xff0c;\u5927\u5e45\u964d\u4f4e\u670d\u52a1\u5668\u538b\u529b\u3002<\/p>\n<p>\u3000\u30002. \u6570\u636e\u7f13\u5b58&#xff1a;\u5bf9\u9891\u7e41\u8bbf\u95ee\u4f46\u4e0d\u5e38\u53d8\u66f4\u7684\u5546\u54c1\u6570\u636e\u3001\u4ef7\u683c\u3001\u8bc4\u8bba\u7b49&#xff0c;\u4f7f\u7528 Redis \u7f13\u5b58\u3002<\/p>\n<p>\u3000\u30003. \u672c\u5730\u7f13\u5b58&#xff1a;\u5982Guava Cache(Java)\u7b49\u5c06\u70ed\u70b9\u6570\u636e\u7f13\u5b58\u81f3\u672c\u5730\u5185\u5b58\u4e2d&#xff0c;\u907f\u514d\u6bcf\u6b21\u8c03\u7528\u6570\u636e\u5e93\u3002<\/p>\n<p>\u3000\u30004. \u5206\u5e03\u5f0f\u7f13\u5b58\u67b6\u6784&#xff1a;\u5927\u578b\u5e73\u53f0\u5e94\u91c7\u7528 Redis Cluster \u6216 Memcached \u5206\u5e03\u5f0f\u7f13\u5b58&#xff0c;\u5e76\u505a\u597d\u6301\u4e45\u5316\u4e0e\u5bb9\u707e\u8bbe\u8ba1\u3002<\/p>\n<p>\u3000\u3000\u56db\u3001\u4f7f\u7528\u5f02\u6b65\u5904\u7406\u673a\u5236\u62c6\u5206\u8bf7\u6c42\u94fe<\/p>\n<p>\u3000\u3000\u90e8\u5206\u8bf7\u6c42(\u5982\u4e0b\u5355\u540e\u53d1\u9001\u77ed\u4fe1\u3001\u79ef\u5206\u8bb0\u5f55)\u4e0d\u9700\u8981\u5b9e\u65f6\u54cd\u5e94&#xff0c;\u5b8c\u5168\u53ef\u4ee5\u91c7\u7528\u5f02\u6b65\u5904\u7406&#xff1a;<\/p>\n<p>\u3000\u3000\u4f7f\u7528 \u6d88\u606f\u961f\u5217(\u5982Kafka\u3001RabbitMQ)\u8fdb\u884c\u8bf7\u6c42\u524a\u5cf0;<\/p>\n<p>\u3000\u3000\u4e0b\u5355\u4e3b\u6d41\u7a0b\u53ea\u8d1f\u8d23\u751f\u6210\u8ba2\u5355\u7f16\u53f7\u548c\u5e93\u5b58\u5360\u7528&#xff0c;\u5176\u4ed6\u5f02\u6b65\u5b8c\u6210;<\/p>\n<p>\u3000\u3000\u5206\u5e03\u5f0f\u4efb\u52a1\u8c03\u5ea6\u6846\u67b6(\u5982xxl-job)\u5b9a\u671f\u5904\u7406\u975e\u6838\u5fc3\u6d41\u7a0b\u3002<\/p>\n<p>\u3000\u3000\u597d\u5904&#xff1a;\u51cf\u5c11\u4e3b\u94fe\u8def\u5904\u7406\u65f6\u95f4&#xff0c;\u63d0\u5347\u603b\u4f53QPS\u54cd\u5e94\u80fd\u529b\u3002<\/p>\n<p>\u3000\u3000\u4e94\u3001\u6570\u636e\u5e93\u5c42\u4f18\u5316&#xff1a;\u8ba9QPS\u4e0d\u88ab\u201c\u6162SQL\u201d\u62d6\u6b7b<\/p>\n<p>\u3000\u3000\u6570\u636e\u5e93\u5f80\u5f80\u662f\u9ad8\u5e76\u53d1\u7cfb\u7edf\u7684\u74f6\u9888\u6240\u5728\u3002\u63d0\u5347QPS\u5fc5\u987b\u4f18\u5316DB\u8bbf\u95ee\u6548\u7387&#xff1a;<\/p>\n<p>\u3000\u30001. \u8bfb\u5199\u5206\u79bb&#xff1a;\u4f7f\u7528\u4e00\u4e3b\u591a\u4ece\u67b6\u6784&#xff0c;\u8bfb\u8bf7\u6c42\u5206\u644a\u81f3\u591a\u4e2a\u4ece\u5e93&#xff0c;\u5927\u5e45\u63d0\u5347\u541e\u5410\u91cf\u3002<\/p>\n<p>\u3000\u30002. \u5782\u76f4\u5206\u8868 \/ \u6c34\u5e73\u5206\u5e93&#xff1a;\u6839\u636e\u4e1a\u52a1\u5b57\u6bb5\u8fdb\u884c\u903b\u8f91\u62c6\u8868\u3001\u5206\u5e93&#xff0c;\u63d0\u9ad8\u67e5\u8be2\u901f\u5ea6&#xff0c;\u907f\u514d\u5355\u8868\u53d8\u5927\u5bfc\u81f4\u626b\u63cf\u7f13\u6162\u3002<\/p>\n<p>\u3000\u30003. \u4f7f\u7528\u8fde\u63a5\u6c60&#xff1a;\u5982Druid\u3001HikariCP&#xff0c;\u907f\u514d\u9891\u7e41\u5efa\u7acb\/\u91ca\u653e\u8fde\u63a5&#xff0c;\u964d\u4f4e\u5ef6\u8fdf\u3002<\/p>\n<p>\u3000\u30004. \u51cf\u5c11\u4e8b\u52a1\u8303\u56f4&#xff1a;\u8d8a\u5c0f\u7684\u4e8b\u52a1\u7c92\u5ea6&#xff0c;\u8d8a\u77ed\u7684\u9501\u5b9a\u65f6\u95f4&#xff0c;\u53ef\u63d0\u9ad8\u5e76\u53d1\u5904\u7406\u80fd\u529b\u3002<\/p>\n<p>\u3000\u30005. \u589e\u52a0\u7d22\u5f15\u4e0e\u6162SQL\u6392\u67e5&#xff1a;\u5408\u7406\u4f7f\u7528\u8054\u5408\u7d22\u5f15&#xff0c;\u5b9a\u671f\u5206\u6790\u6162\u67e5\u8be2\u65e5\u5fd7(EXPLAIN &#043; profile\u5206\u6790)\u662f\u5173\u952e\u3002<\/p>\n<p>\u3000\u3000\u516d\u3001\u670d\u52a1\u5668\u786c\u4ef6\u914d\u7f6e\u4e0e\u96c6\u7fa4\u90e8\u7f72\u4f18\u5316<\/p>\n<p>\u3000\u30001. \u4f7f\u7528\u591a\u6838\u9ad8\u9891CPU&#xff1a;\u5355\u8bf7\u6c42\u6027\u80fd\u74f6\u9888\u4e3b\u8981\u53d7CPU\u5f71\u54cd&#xff0c;\u5efa\u8bae\u9009\u62e93.0GHz\u4ee5\u4e0a\u4e3b\u9891\u7684\u7269\u7406\u6216\u4e91\u670d\u52a1\u5668\u3002<\/p>\n<p>\u3000\u30002. \u5145\u8db3\u5185\u5b58&#xff1a;\u5185\u5b58\u7528\u4e8e\u7f13\u5b58\u3001\u6570\u636e\u5e93\u3001Java GC\u56de\u6536\u533a\u7b49&#xff0c;\u5e94\u4fdd\u8bc1\u5728\u9ad8\u5cf0\u671f\u95f4\u65e0OOM\u98ce\u9669\u3002<\/p>\n<p>\u3000\u30003. SSD\u786c\u76d8\u66ff\u4ee3HDD&#xff1a;IO\u54cd\u5e94\u901f\u5ea6\u66f4\u5feb&#xff0c;\u5c24\u5176\u5bf9\u6570\u636e\u5e93\u5199\u5165\u6027\u80fd\u63d0\u5347\u660e\u663e\u3002<\/p>\n<p>\u3000\u30004. \u5e26\u5bbd\u4e0e\u7f51\u5361\u4f18\u5316&#xff1a;\u4f7f\u7528\u5343\u5146\u4ee5\u4e0a\u7f51\u5361\u4e0e\u72ec\u4eab\u5e26\u5bbd\u7ebf\u8def&#xff0c;\u907f\u514d\u7f51\u7edc\u62e5\u585e\u3002<\/p>\n<p>\u3000\u30005. \u591a\u673a\u8d1f\u8f7d\u5747\u8861&#xff1a;\u5229\u7528LVS\u3001Nginx\u6216\u4e91\u8d1f\u8f7d\u5747\u8861 SLB \u5bf9\u8bf7\u6c42\u8fdb\u884c\u8f6e\u8be2\u8c03\u5ea6&#xff0c;\u63d0\u9ad8\u6574\u4f53QPS\u80fd\u529b\u3002<\/p>\n<p>\u3000\u3000\u4e03\u3001\u7cfb\u7edf\u5185\u6838\u8c03\u4f18<\/p>\n<p>\u3000\u3000\u670d\u52a1\u5668\u5185\u6838\u53c2\u6570\u76f4\u63a5\u5f71\u54cd\u7cfb\u7edf\u6700\u5927\u5e76\u53d1\u8fde\u63a5\u6570\u548c\u7f51\u7edcIO\u80fd\u529b&#xff1a;<\/p>\n<p># \u589e\u52a0\u6700\u5927\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570<br \/>\nulimit -n 65535<\/p>\n<p># \u4fee\u6539\/etc\/sysctl.conf<br \/>\nnet.core.somaxconn &#061; 65535<br \/>\nnet.ipv4.tcp_max_syn_backlog &#061; 8192<br \/>\nnet.ipv4.tcp_tw_reuse &#061; 1<br \/>\nnet.ipv4.ip_local_port_range &#061; 1024 65535<\/p>\n<p>\u3000\u3000\u5e76\u914d\u5408\u591a\u8fdb\u7a0b\u6a21\u578b(\u5982Node.js cluster&#xff0c;Nginx worker_processes)\u5145\u5206\u5229\u7528\u591a\u6838CPU\u3002<\/p>\n<p>\u3000\u3000\u516b\u3001\u5e94\u7528\u670d\u52a1\u4ee3\u7801\u5c42\u4f18\u5316<\/p>\n<p>\u3000\u3000\u4ee3\u7801\u5c42\u4f18\u5316\u76f4\u63a5\u5f71\u54cd\u4e1a\u52a1\u5904\u7406\u901f\u5ea6&#xff1a;<\/p>\n<p>\u3000\u3000\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u540c\u6b65\u64cd\u4f5c(\u5982IO\u3001\u7b49\u5f85\u64cd\u4f5c);<\/p>\n<p>\u3000\u3000\u4f7f\u7528\u8fde\u63a5\u6c60\u3001\u7ebf\u7a0b\u6c60\u3001\u5f02\u6b65\u8c03\u7528\u673a\u5236(\u5982Java CompletableFuture);<\/p>\n<p>\u3000\u3000\u5c06\u70ed\u70b9\u529f\u80fd\u6a21\u5757\u505a\u72ec\u7acb\u670d\u52a1(\u5982\u62a2\u8d2d\u670d\u52a1\u5355\u72ec\u90e8\u7f72);<\/p>\n<p>\u3000\u3000\u4f7f\u7528\u8f7b\u91cf\u7ea7Web\u6846\u67b6&#xff0c;\u5982Go\u8bed\u8a00\u7684Gin&#xff0c;Java\u4e2d\u7684Vert.x&#xff0c;\u6027\u80fd\u4f18\u4e8e\u4f20\u7edfSpring\u6846\u67b6\u3002<\/p>\n<p>\u3000\u3000\u5e94\u5bf9618\u8fd9\u7c7b\u5927\u578b\u4fc3\u9500\u6d3b\u52a8\u7684\u9ad8\u5e76\u53d1\u6d41\u91cf&#xff0c;\u63d0\u5347QPS\u5e76\u975e\u5355\u9760\u201c\u52a0\u914d\u7f6e\u201d\u80fd\u89e3\u51b3&#xff0c;\u800c\u662f\u9700\u8981\u67b6\u6784\u3001\u7f13\u5b58\u3001\u6570\u636e\u5e93\u3001\u786c\u4ef6\u3001\u5185\u6838\u3001\u4ee3\u7801\u3001\u76d1\u63a7\u7b49\u591a\u4e2a\u7ef4\u5ea6\u534f\u540c\u4f18\u5316\u3002\u53ea\u6709\u5728\u6280\u672f\u4f53\u7cfb\u8db3\u591f\u5b8c\u5907\u3001\u6d41\u7a0b\u7ba1\u7406\u89c4\u8303\u3001\u5bb9\u707e\u673a\u5236\u5b8c\u5584\u7684\u524d\u63d0\u4e0b&#xff0c;\u624d\u80fd\u771f\u6b63\u625b\u4f4f\u767e\u4e07\u7ea7\u8bf7\u6c42\u6d2a\u5cf0&#xff0c;\u5b9e\u73b0\u4e1a\u52a1\u7cfb\u7edf\u7684\u7a33\u5b9a\u4e0e\u9ad8\u53ef\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb1k\u6b21\uff0c\u70b9\u8d5e10\u6b21\uff0c\u6536\u85cf6\u6b21\u3002\u672c\u6587\u5c06\u4ece\u6280\u672f\u67b6\u6784\u3001\u7cfb\u7edf\u8c03\u4f18\u3001\u8f6f\u786c\u8d44\u6e90\u914d\u7f6e\u7b49\u591a\u4e2a\u7ef4\u5ea6\uff0c\u6df1\u5165\u63a2\u8ba8\u5982\u4f55\u6709\u6548\u63d0\u9ad8\u670d\u52a1\u5668\u7684QPS\uff0c\u5e94\u5bf9618\u6d3b\u52a8\u5e26\u6765\u7684\u6d41\u91cf\u6d2a\u5cf0\u3002\u5e94\u5bf9618\u8fd9\u7c7b\u5927\u578b\u4fc3\u9500\u6d3b\u52a8\u7684\u9ad8\u5e76\u53d1\u6d41\u91cf\uff0c\u63d0\u5347QPS\u5e76\u975e\u5355\u9760\u201c\u52a0\u914d\u7f6e\u201d\u80fd\u89e3\u51b3\uff0c\u800c\u662f\u9700\u8981\u67b6\u6784\u3001\u7f13\u5b58\u3001\u6570\u636e\u5e93\u3001\u786c\u4ef6\u3001\u5185\u6838\u3001\u4ee3\u7801\u3001\u76d1\u63a7\u7b49\u591a\u4e2a\u7ef4\u5ea6\u534f\u540c\u4f18\u5316\u3002\u5728618\u6d3b\u52a8\u4e2d\uff0c\u8bf7\u6c42\u7c7b\u578b\u5305\u62ec\u9875\u9762\u6d4f\u89c8\u3001\u5546\u54c1\u8be6\u60c5\u67e5\u8be2\u3001\u4e0b\u5355\u8bf7\u6c42\u3001\u652f\u4ed8\u8df3\u8f6c\u3001\u5e93\u5b58\u6838\u51cf\u7b49\uff0c\u6d89\u53ca\u94fe\u8def\u957f\u3001\u8bf7\u6c42\u9891\u7e41\u3001\u66f4\u65b0\u5bc6\u96c6\uff0c\u8fd9\u5bf9 QPS \u63d0\u51fa\u6781\u9ad8\u8981\u6c42\u30022. \u6570\u636e\u7f13\u5b58\uff1a\u5bf9\u9891\u7e41\u8bbf\u95ee\u4f46\u4e0d\u5e38\u53d8\u66f4\u7684\u5546\u54c1\u6570\u636e\u3001\u4ef7\u683c\u3001\u8bc4\u8bba\u7b49\uff0c\u4f7f\u7528 Redis \u7f13\u5b58\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99,43,44],"topic":[],"class_list":["post-39969","post","type-post","status-publish","format-standard","hentry","category-server","tag-java","tag-43","tag-44"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - 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