{"id":95142,"date":"2026-08-16T10:33:04","date_gmt":"2026-08-16T02:33:04","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/95142.html"},"modified":"2026-08-16T10:33:04","modified_gmt":"2026-08-16T02:33:04","slug":"%e6%95%b0%e6%8d%ae%e5%ba%93%e6%80%bb%e5%9c%a8%e9%ab%98%e5%b3%b0%e6%9c%9f%e5%80%92%e4%b8%8b%ef%bc%9f%e4%b8%80%e6%96%87%e5%bd%bb%e5%ba%95%e6%90%9e%e6%87%82%e8%bf%9e%e6%8e%a5%e6%b1%a0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/95142.html","title":{"rendered":"\u6570\u636e\u5e93\u603b\u5728\u9ad8\u5cf0\u671f\u201c\u5012\u4e0b\u201d\uff1f\u4e00\u6587\u5f7b\u5e95\u641e\u61c2\u8fde\u63a5\u6c60\u7684\u539f\u7406\u3001\u5b9e\u6218\u4e0e\u9677\u9631"},"content":{"rendered":"<\/p>\n<h4>\u76ee\u5f55<\/h4>\n<ul>\n<li>\n<ul>\n<li>1. \u4ec0\u4e48\u662f\u8fde\u63a5\u6c60&#xff1f;<\/li>\n<li>2. \u4e3a\u4ec0\u4e48\u5fc5\u987b\u7528\u8fde\u63a5\u6c60&#xff1f;<\/li>\n<li>\n<ul>\n<li>2.1 \u8fde\u63a5\u7684\u5efa\u7acb\u6bd4\u4f60\u60f3\u7684\u8981\u6602\u8d35<\/li>\n<li>2.2 \u4fdd\u62a4\u540e\u7aef\u8d44\u6e90\u4e0d\u88ab\u8017\u5c3d<\/li>\n<li>2.3 \u63d0\u5347\u54cd\u5e94\u901f\u5ea6<\/li>\n<li>2.4 \u4fbf\u4e8e\u5065\u5eb7\u7ba1\u7406\u4e0e\u91cd\u8fde<\/li>\n<li>2.5 \u771f\u5b9e\u573a\u666f\u538b\u529b\u5bf9\u6bd4&#xff1a;\u6709\u6c60\u4e0e\u65e0\u6c60\u7684\u6781\u9650\u53cd\u5dee<\/li>\n<\/ul>\n<\/li>\n<li>3. \u8fde\u63a5\u6c60\u7684\u6838\u5fc3\u5b9e\u73b0\u539f\u7406<\/li>\n<li>\n<ul>\n<li>3.1 \u4f20\u7edf\u6a21\u5f0f&#xff08;\u5982 PHP-FPM&#xff09;\u7684\u56f0\u5883<\/li>\n<li>3.2 \u4e3a\u4ec0\u4e48\u9700\u8981\u201c\u5e38\u9a7b\u5185\u5b58\u201d\u73af\u5883&#xff1f;<\/li>\n<li>3.3 \u8fde\u63a5\u6c60\u4e0e\u957f\u8fde\u63a5\u7684\u8fa9\u8bc1\u5173\u7cfb&#xff08;\u4e00\u4e2a\u5fc5\u987b\u5398\u6e05\u7684\u8bef\u533a&#xff09;<\/li>\n<li>3.4 \u957f\u8fde\u63a5\u4ec0\u4e48\u65f6\u5019\u771f\u6b63\u91ca\u653e&#xff1f;&#xff08;\u9ad8\u9891\u751f\u4ea7\u7591\u95ee&#xff09;<\/li>\n<li>3.5 \u8fde\u63a5\u6c60\u7684\u6838\u5fc3\u6570\u636e\u7ed3\u6784&#xff1a;\u961f\u5217&#xff08;\u5148\u8fdb\u5148\u51fa&#xff09;<\/li>\n<li>3.6 \u6df1\u5165\u7406\u89e3&#xff1a;\u961f\u5217\u4e2d\u5230\u5e95\u4fdd\u5b58\u7684\u662f\u4ec0\u4e48&#xff1f;&#xff08;\u9ad8\u9891\u7591\u95ee\u89e3\u6790&#xff09;<\/li>\n<li>3.7 \u963b\u585e\u961f\u5217\u4e0e\u534f\u7a0b\/\u7ebf\u7a0b\u8c03\u5ea6<\/li>\n<\/ul>\n<\/li>\n<li>4. PHP \u8fde\u63a5\u6c60\u5b9e\u6218\u793a\u4f8b&#xff08;\u57fa\u4e8e Swoole&#xff09;<\/li>\n<li>\n<ul>\n<li>4.1 \u81ea\u5b9a\u4e49 MySQL \u8fde\u63a5\u6c60&#xff08;\u5b8c\u6574\u4ee3\u7801&#xff09;<\/li>\n<li>4.2 \u57fa\u7840\u4f7f\u7528\u793a\u4f8b<\/li>\n<li>4.3 \u5173\u952e\u7ec6\u8282\u8bf4\u660e<\/li>\n<li>4.4 \u5b9e\u6218\u573a\u666f\u4e00&#xff1a;\u8d44\u91d1\u8f6c\u8d26\u4e8b\u52a1\u5904\u7406&#xff08;\u52a1\u5fc5\u6ce8\u610f\u91cd\u7f6e&#xff09;<\/li>\n<li>4.5 \u5b9e\u6218\u573a\u666f\u4e8c&#xff1a;\u8fde\u63a5\u6c60\u72b6\u6001\u76d1\u63a7\u4e0e\u52a8\u6001\u8c03\u4f18<\/li>\n<\/ul>\n<\/li>\n<li>5. \u5982\u679c\u4e0d\u7528 Swoole\/\u5e38\u9a7b\u5185\u5b58&#xff0c;\u8fd8\u6709\u5176\u4ed6\u65b9\u6848\u5417&#xff1f;<\/li>\n<li>\n<ul>\n<li>5.1 \u6301\u4e45\u8fde\u63a5&#xff08;\u4f20\u7edf PHP-FPM \/ \u8fdb\u7a0b\u6a21\u5f0f&#xff09;<\/li>\n<li>5.2 \u4ee3\u7406\u4e2d\u95f4\u4ef6&#xff08;\u5982 ProxySQL \/ PgBouncer&#xff09;<\/li>\n<li>5.3 \u5355\u8fdb\u7a0b\u811a\u672c\u7684\u7b80\u6613\u6c60&#xff08;\u4ec5\u4f9b\u5b66\u4e60&#xff09;<\/li>\n<li>5.4 \u4f20\u7edf\u8fdb\u7a0b\u6a21\u5f0f\u9879\u76ee\u7684\u5e94\u6025\u4f18\u5316\u65b9\u6848<\/li>\n<\/ul>\n<\/li>\n<li>6. \u751f\u4ea7\u73af\u5883\u8fde\u63a5\u6c60\u7684\u8fdb\u9636\u8981\u70b9<\/li>\n<li>7. \u603b\u7ed3<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u4e3a\u4ec0\u4e48\u4f60\u7684\u6570\u636e\u5e93\u603b\u5728\u9ad8\u5cf0\u671f\u201c\u5012\u4e0b\u201d&#xff1f;\u8fde\u63a5\u6c60\u53ef\u80fd\u662f\u4f60\u7f3a\u5931\u7684\u90a3\u5757\u62fc\u56fe\u3002\u8fde\u63a5\u6c60\u8fd9\u4e00\u5757\u5c0f\u9a6c\u5df2\u7ecf\u5fcd\u4f60\u5f88\u4e45\u4e86&#xff0c;\u7edd\u5bf9\u662f\u8fdb\u9636\u540e\u7aef\u5de5\u7a0b\u5e08\u5fc5\u5907\u3002\u54e6\u4e0d&#xff0c;\u73b0\u5728\u4f3c\u4e4e\u5df2\u7ecf\u4e0d\u80fd\u8fd9\u4e48\u79f0\u547c\u4e86&#xff0c;\u5e94\u8be5\u53ea\u6709\u5168\u6808\u5de5\u7a0b\u4e86&#xff0c;\u4e0d\u80fd\u5206\u524d\u540e\u7aef\u4e86&#xff5e;&#xff5e;<\/p>\n<hr \/>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260816023302-6a81215e3c26a.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>1. \u4ec0\u4e48\u662f\u8fde\u63a5\u6c60&#xff1f;<\/h3>\n<p>\u8fde\u63a5\u6c60&#xff08;Connection Pool&#xff09; \u662f\u4e00\u79cd\u8d44\u6e90\u590d\u7528\u7684\u8bbe\u8ba1\u6a21\u5f0f\u3002\u5b83\u5728\u5e94\u7528\u7a0b\u5e8f\u542f\u52a8\u6216\u8fd0\u884c\u671f\u95f4&#xff0c;\u9884\u5148\u521b\u5efa\u4e00\u7ec4\u5230\u5916\u90e8\u670d\u52a1&#xff08;\u5982\u6570\u636e\u5e93\u3001Redis\u3001HTTP API \u7b49&#xff09;\u7684\u8fde\u63a5&#xff0c;\u5e76\u5c06\u8fd9\u4e9b\u8fde\u63a5\u201c\u6c60\u5316\u201d\u7edf\u4e00\u7ba1\u7406\u3002\u5f53\u5e94\u7528\u9700\u8981\u8bbf\u95ee\u5916\u90e8\u670d\u52a1\u65f6&#xff0c;\u4e0d\u518d\u662f\u6bcf\u6b21\u65b0\u5efa\u8fde\u63a5&#xff0c;\u800c\u662f\u4ece\u6c60\u4e2d\u501f\u7528\u4e00\u4e2a\u7a7a\u95f2\u8fde\u63a5&#xff0c;\u4f7f\u7528\u5b8c\u6bd5\u540e\u5f52\u8fd8\u5230\u6c60\u4e2d&#xff0c;\u4f9b\u540e\u7eed\u8bf7\u6c42\u91cd\u7528\u3002<\/p>\n<p>\u6253\u4e2a\u901a\u4fd7\u7684\u6bd4\u65b9&#xff1a;\u8fde\u63a5\u6c60\u5c31\u50cf\u4e00\u5bb6\u5496\u5561\u5e97\u5e38\u5907\u7684\u51e0\u53f0\u5496\u5561\u673a\u3002\u6bcf\u6765\u4e00\u4f4d\u987e\u5ba2&#xff0c;\u5e97\u5458\u4e0d\u9700\u8981\u4e34\u65f6\u53bb\u4e70\u65b0\u673a\u5668&#xff0c;\u800c\u662f\u76f4\u63a5\u4ece\u67b6\u5b50\u4e0a\u53d6\u4e00\u53f0\u73b0\u6210\u7684&#xff0c;\u505a\u5b8c\u5496\u5561\u6d17\u5e72\u51c0\u653e\u56de\u539f\u5904&#xff0c;\u4e0b\u4e00\u4f4d\u987e\u5ba2\u7ee7\u7eed\u7528\u3002\u8fd9\u6837\u5c31\u907f\u514d\u4e86\u53cd\u590d\u201c\u91c7\u8d2d\u2014\u7838\u6389\u201d\u7684\u9ad8\u6602\u6210\u672c\u3002<\/p>\n<hr \/>\n<h3>2. \u4e3a\u4ec0\u4e48\u5fc5\u987b\u7528\u8fde\u63a5\u6c60&#xff1f;<\/h3>\n<h4>2.1 \u8fde\u63a5\u7684\u5efa\u7acb\u6bd4\u4f60\u60f3\u7684\u8981\u6602\u8d35<\/h4>\n<ul>\n<li>TCP \u4e09\u6b21\u63e1\u624b&#xff1a;\u7f51\u7edc\u5f80\u8fd4\u5ef6\u8fdf&#xff08;RTT&#xff09;\u3002<\/li>\n<li>SSL\/TLS \u52a0\u5bc6\u63e1\u624b&#xff1a;\u975e\u5bf9\u79f0\u52a0\u5bc6\u8fd0\u7b97&#xff0c;\u8017\u65f6\u6570\u5341\u6beb\u79d2\u3002<\/li>\n<li>\u6570\u636e\u5e93\u8ba4\u8bc1&#xff1a;\u7528\u6237\u540d\u5bc6\u7801\u9a8c\u8bc1&#xff0c;\u6743\u9650\u52a0\u8f7d\u3002<\/li>\n<li>\u4f1a\u8bdd\u521d\u59cb\u5316&#xff1a;\u8bbe\u7f6e\u5b57\u7b26\u96c6\u3001\u65f6\u533a\u3001\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\u7b49\u3002<\/li>\n<\/ul>\n<p>\u4e00\u6b21\u77ed\u8fde\u63a5\u53ef\u80fd\u8017\u8d39 50~200ms&#xff0c;\u5bf9\u4e8e\u9ad8\u5e76\u53d1&#xff08;\u5982 1000 QPS&#xff09;\u6765\u8bf4&#xff0c;CPU \u548c\u65f6\u95f4\u90fd\u6d6a\u8d39\u5728\u201c\u63e1\u624b\u201d\u800c\u975e\u201c\u4e1a\u52a1\u201d\u4e0a\u3002<\/p>\n<h4>2.2 \u4fdd\u62a4\u540e\u7aef\u8d44\u6e90\u4e0d\u88ab\u8017\u5c3d<\/h4>\n<p>\u6bcf\u4e2a\u6570\u636e\u5e93\u8fde\u63a5\u90fd\u8981\u5360\u7528\u5185\u5b58&#xff08;MySQL \u7ea6 2~5MB&#xff09;\u548c\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002\u5982\u679c\u4e0d\u52a0\u9650\u5236&#xff0c;\u5e76\u53d1\u8bf7\u6c42\u4e00\u591a&#xff0c;\u8fde\u63a5\u6570\u66b4\u6da8&#xff0c;\u6570\u636e\u5e93\u76f4\u63a5 OOM \u6216\u62d2\u7edd\u670d\u52a1\u3002\u8fde\u63a5\u6c60\u901a\u8fc7 \u6700\u5927\u8fde\u63a5\u6570 \u786c\u6027\u9650\u6d41&#xff0c;\u4fdd\u62a4\u540e\u7aef\u3002<\/p>\n<h4>2.3 \u63d0\u5347\u54cd\u5e94\u901f\u5ea6<\/h4>\n<p>\u6c60\u4e2d\u8fde\u63a5\u5373\u53d6\u5373\u7528&#xff0c;\u7701\u53bb\u5efa\u7acb\u65f6\u95f4&#xff0c;\u54cd\u5e94\u5ef6\u8fdf\u7a33\u5b9a\u964d\u4f4e\u3002<\/p>\n<h4>2.4 \u4fbf\u4e8e\u5065\u5eb7\u7ba1\u7406\u4e0e\u91cd\u8fde<\/h4>\n<p>\u8fde\u63a5\u6c60\u53ef\u4ee5\u5b9a\u671f\u63a2\u6d4b\u8fde\u63a5\u662f\u5426\u6709\u6548&#xff0c;\u81ea\u52a8\u5254\u9664\u6b7b\u8fde\u63a5\u5e76\u91cd\u5efa&#xff0c;\u907f\u514d\u5e94\u7528\u62ff\u5230\u201c\u65ad\u6389\u7684\u8fde\u63a5\u201d\u800c\u62a5\u9519\u3002<\/p>\n<h4>2.5 \u771f\u5b9e\u573a\u666f\u538b\u529b\u5bf9\u6bd4&#xff1a;\u6709\u6c60\u4e0e\u65e0\u6c60\u7684\u6781\u9650\u53cd\u5dee<\/h4>\n<p>\u5047\u8bbe\u6211\u4eec\u8981\u505a\u4e00\u4e2a\u56fe\u4e66\u79d2\u6740\u6d3b\u52a8&#xff0c;1 \u5206\u949f\u5185\u6d8c\u5165 2000 \u4e2a\u5e76\u53d1\u8bf7\u6c42\u67e5\u8be2\u5e93\u5b58\u5e76\u4e0b\u5355\u3002<\/p>\n<ul>\n<li>\u65e0\u8fde\u63a5\u6c60&#xff08;\u77ed\u8fde\u63a5\u6a21\u5f0f&#xff09;&#xff1a;\u6bcf\u4e2a\u8bf7\u6c42\u6267\u884c new PDO() -&gt; \u67e5\u8be2 -&gt; \u9500\u6bc1\u3002\u6570\u636e\u5e93\u77ac\u95f4\u6536\u5230 2000 \u4e2a\u5efa\u8fde\u8bf7\u6c42&#xff0c;CPU \u88ab\u63e1\u624b\u8ba1\u7b97\u5360\u6ee1&#xff0c;\u540c\u65f6 MySQL \u8fde\u63a5\u6570\u98d9\u5347\u81f3 2000&#043;&#xff08;\u8d85\u8fc7\u9ed8\u8ba4\u7684 max_connections&#061;151&#xff09;&#xff0c;\u6570\u636e\u5e93\u76f4\u63a5\u62a5\u9519 Too many connections&#xff0c;\u6d3b\u52a8\u9875\u9762\u767d\u5c4f&#xff0c;\u5bfc\u81f4\u5927\u91cf\u7528\u6237\u6295\u8bc9\u3002<\/li>\n<li>\u6709\u8fde\u63a5\u6c60&#xff08;\u6c60\u5927\u5c0f&#061;20&#xff09;&#xff1a;Swoole \u670d\u52a1\u542f\u52a8\u65f6\u9884\u5148\u5efa\u7acb\u597d 20 \u4e2a\u8fde\u63a5\u30022000 \u4e2a\u5e76\u53d1\u8bf7\u6c42\u5230\u6765\u65f6&#xff0c;\u6700\u591a\u53ea\u6709 20 \u4e2a\u8bf7\u6c42\u80fd\u540c\u65f6\u62ff\u5230\u8fde\u63a5\u6267\u884c SQL&#xff0c;\u5176\u4f59 1980 \u4e2a\u8bf7\u6c42\u7684\u534f\u7a0b\u5728 pop() \u5904\u6e29\u548c\u6302\u8d77\u3002\u968f\u7740\u524d 20 \u4e2a\u8bf7\u6c42\u6267\u884c\u5b8c\u6bd5\u5f52\u8fd8\u8fde\u63a5&#xff0c;\u540e\u7eed\u8bf7\u6c42\u4f9d\u6b21\u88ab\u5524\u9192\u3002\u6570\u636e\u5e93\u8fde\u63a5\u6570\u59cb\u7ec8\u7a33\u5b9a\u5728 20 \u4e2a&#xff0c;CPU \u5e73\u7a33&#xff0c;\u6d3b\u52a8\u867d\u7136\u7565\u5fae\u5ef6\u8fdf\u4f46\u7a33\u7a33\u625b\u4f4f&#xff0c;\u6ca1\u6709\u5d29\u6e83\u3002<\/li>\n<\/ul>\n<p>\u7ed3\u8bba&#xff1a;\u8fde\u63a5\u6c60\u5728\u7a81\u53d1\u6d41\u91cf\u4e0b\u4e0d\u662f\u201c\u52a0\u901f\u5668\u201d&#xff0c;\u800c\u662f\u201c\u5b89\u5168\u6c14\u56ca\u201d\u2014\u2014\u5b83\u7528\u6392\u961f\u673a\u5236\u53d6\u4ee3\u4e86\u8fde\u63a5\u98ce\u66b4&#xff0c;\u4fdd\u62a4\u4e86\u540e\u7aef\u6570\u636e\u5e93\u3002<\/p>\n<hr \/>\n<h3>3. \u8fde\u63a5\u6c60\u7684\u6838\u5fc3\u5b9e\u73b0\u539f\u7406<\/h3>\n<h4>3.1 \u4f20\u7edf\u6a21\u5f0f&#xff08;\u5982 PHP-FPM&#xff09;\u7684\u56f0\u5883<\/h4>\n<p>\u5728\u4f20\u7edf\u7684 Web \u6258\u7ba1\u6a21\u5f0f&#xff08;\u5982 PHP-FPM&#xff09;\u4e0b&#xff0c;\u6bcf\u4e2a\u8bf7\u6c42\u72ec\u7acb\u8fdb\u7a0b&#xff0c;\u8bf7\u6c42\u7ed3\u675f\u540e\u8fdb\u7a0b\u9500\u6bc1&#xff0c;\u6240\u6709\u8d44\u6e90&#xff08;\u5305\u62ec\u8fde\u63a5&#xff09;\u968f\u4e4b\u91ca\u653e\u3002\u8fdb\u7a0b\u95f4\u65e0\u6cd5\u5171\u4eab\u8fde\u63a5&#xff0c;\u56e0\u6b64\u65e0\u6cd5\u5b9e\u73b0\u4e00\u4e2a\u5168\u5c40\u7684\u8fde\u63a5\u6c60\u4f9b\u591a\u4e2a\u8bf7\u6c42\u590d\u7528\u3002 &#xff08;\u67d0\u4e9b\u8bed\u8a00\u63d0\u4f9b\u7684\u6301\u4e45\u8fde\u63a5&#xff0c;\u5982 PDO::ATTR_PERSISTENT&#xff0c;\u4ec5\u4ec5\u662f\u201c\u6bcf\u4e2a\u8fdb\u7a0b\u7f13\u5b58\u4e00\u4e2a\u8fde\u63a5\u201d&#xff0c;\u5e76\u975e\u771f\u6b63\u7684\u8fde\u63a5\u6c60\u3002&#xff09;<\/p>\n<h4>3.2 \u4e3a\u4ec0\u4e48\u9700\u8981\u201c\u5e38\u9a7b\u5185\u5b58\u201d\u73af\u5883&#xff1f;<\/h4>\n<p>\u771f\u6b63\u7684\u8fde\u63a5\u6c60\u5fc5\u987b\u5b58\u5728\u4e8e\u5e38\u9a7b\u5185\u5b58\u7684\u5e94\u7528\u8fdb\u7a0b\u4e2d&#xff08;\u5982 Java \u7684 Spring Boot\u3001Go \u7684 Http Server\u3001Swoole\/Workerman \u7b49&#xff09;\u3002\u53ea\u6709\u8fdb\u7a0b\u957f\u671f\u8fd0\u884c&#xff0c;\u624d\u80fd\u7ef4\u62a4\u8de8\u8bf7\u6c42\u7684\u8fde\u63a5\u590d\u7528\u3002\u5728\u8fd9\u4e9b\u73af\u5883\u4e0b&#xff0c;\u8fde\u63a5\u6c60\u7684\u5b9e\u73b0\u666e\u904d\u4f9d\u8d56 \u961f\u5217&#xff08;Queue&#xff09; \u7ed3\u6784\u3002<\/p>\n<h4>3.3 \u8fde\u63a5\u6c60\u4e0e\u957f\u8fde\u63a5\u7684\u8fa9\u8bc1\u5173\u7cfb&#xff08;\u4e00\u4e2a\u5fc5\u987b\u5398\u6e05\u7684\u8bef\u533a&#xff09;<\/h4>\n<p>\u7406\u89e3\u4e86\u201c\u5e38\u9a7b\u73af\u5883\u201d\u540e&#xff0c;\u4e00\u4e2a\u66f4\u6df1\u5c42\u6b21\u7684\u95ee\u9898\u6d6e\u73b0\u51fa\u6765&#xff1a;\u5b9e\u73b0\u8fde\u63a5\u6c60&#xff0c;\u4e3a\u4ec0\u4e48\u5fc5\u987b\u4f9d\u8d56\u4e8e\u957f\u8fde\u63a5&#xff1f;<\/p>\n<p>\u7b54\u6848\u975e\u5e38\u76f4\u63a5&#xff1a;\u8fde\u63a5\u6c60\u7684\u672c\u8d28\u662f\u201c\u590d\u7528\u201d&#xff0c;\u800c\u590d\u7528\u7684\u524d\u63d0\u662f\u8fde\u63a5\u201c\u4e0d\u65ad\u5f00\u201d\u3002<\/p>\n<li>\u4ece\u7269\u7406\u672c\u8d28\u770b&#xff1a;\u5982\u679c\u662f\u77ed\u8fde\u63a5&#xff0c;\u5f53\u5e94\u7528\u6267\u884c releaseConnection() \u5f52\u8fd8\u65f6&#xff0c;\u5e95\u5c42\u7684 TCP \u8fde\u63a5\u4f1a\u7acb\u5373\u6267\u884c\u56db\u6b21\u6325\u624b\u5f7b\u5e95\u9500\u6bc1\u3002\u65e2\u7136\u8fde\u63a5\u90fd\u4e0d\u5b58\u5728\u4e86&#xff0c;\u540e\u7eed\u8bf7\u6c42\u81ea\u7136\u65e0\u6cd5\u590d\u7528&#xff0c;\u8fde\u63a5\u6c60\u4e5f\u5c31\u5931\u53bb\u4e86\u610f\u4e49\u3002<\/li>\n<li>\u4ece\u5b9e\u73b0\u5f62\u6001\u770b&#xff1a;\u8fde\u63a5\u6c60\u4e4b\u6240\u4ee5\u80fd\u201c\u6c60\u5316\u201d&#xff0c;\u662f\u56e0\u4e3a\u5b83\u5c06\u8fde\u63a5\u5bf9\u8c61&#xff08;\u5982\u6570\u636e\u5e93\u9a71\u52a8\u5b9e\u4f8b&#xff09;\u4fdd\u5b58\u5728\u5185\u5b58\u961f\u5217\u4e2d&#xff0c;\u5e76\u4f7f\u5176\u7ef4\u6301\u5728 ESTABLISHED \u72b6\u6001\u3002\u53ea\u6709\u5f53\u8fde\u63a5\u4fdd\u6301\u201c\u6d3b\u8dc3\u4f46\u4e0d\u5fd9\u788c\u201d\u7684\u7a7a\u95f2\u957f\u8fde\u63a5\u72b6\u6001\u65f6&#xff0c;\u624d\u80fd\u88ab\u968f\u65f6\u5524\u9192\u5e76\u79fb\u4ea4\u7ed9\u4e0b\u4e00\u4e2a\u8bf7\u6c42\u3002<\/li>\n<p>\u5fc5\u987b\u533a\u5206&#xff1a;\u201c\u6301\u4e45\u8fde\u63a5\u201d\u4e0d\u7b49\u4e8e\u201c\u8fde\u63a5\u6c60\u201d \u5f88\u591a\u5f00\u53d1\u8005\u4f1a\u8bf4&#xff1a;\u201c\u6211\u7528\u8bed\u8a00\u7684\u6301\u4e45\u8fde\u63a5\u529f\u80fd&#xff08;\u4f8b\u5982 PHP \u7684 PDO::ATTR_PERSISTENT \u6216 Java \u7684\u67d0\u4e9b\u57fa\u7840\u9a71\u52a8&#xff09;\u4e0d\u4e5f\u662f\u957f\u8fde\u63a5\u5417&#xff1f;\u201d \u8fd9\u91cc\u5b58\u5728\u4e00\u4e2a\u7ecf\u5178\u7684\u8ba4\u77e5\u8bef\u533a&#xff1a;<\/p>\n<ul>\n<li>\u6301\u4e45\u8fde\u63a5&#xff08;\u8fdb\u7a0b\u7ea7\u7f13\u5b58&#xff09;&#xff1a;\u5b83\u786e\u5b9e\u662f\u957f\u8fde\u63a5&#xff0c;\u4f46\u5b83\u4ec5\u4ec5\u662f\u5f53\u524d\u5de5\u4f5c\u8fdb\u7a0b\u7684\u201c\u79c1\u6709\u8d22\u4ea7\u201d\u3002\u6bcf\u4e2a\u8fdb\u7a0b\u53ea\u80fd\u7f13\u5b58\u4e00\u4e2a\u8fde\u63a5&#xff0c;\u591a\u4e2a\u8fdb\u7a0b\u4e4b\u95f4\u76f8\u4e92\u9694\u79bb&#xff0c;\u65e0\u6cd5\u5b9e\u73b0\u201c\u96c6\u4e2d\u8c03\u5ea6\u201d\u548c\u201c\u603b\u91cf\u9650\u5236\u201d\u3002\u5b83\u65e0\u6cd5\u4fdd\u62a4\u6570\u636e\u5e93\u4e0d\u53d7\u6d77\u91cf\u8fdb\u7a0b\u6570\u7684\u51b2\u51fb\u3002<\/li>\n<li>\u8fde\u63a5\u6c60&#xff08;\u5e94\u7528\u7ea7\u5171\u4eab&#xff09;&#xff1a;\u5b83\u4e5f\u662f\u957f\u8fde\u63a5&#xff0c;\u4f46\u5b83\u662f\u8de8\u534f\u7a0b\/\u7ebf\u7a0b\u5171\u4eab\u7684\u3002\u901a\u8fc7\u961f\u5217\u5206\u53d1&#xff0c;\u5b83\u80fd\u5728 1000 \u4e2a\u5e76\u53d1\u4e2d\u4ec5\u590d\u7528 20 \u4e2a\u8fde\u63a5&#xff0c;\u8fd9\u624d\u662f\u4fdd\u62a4\u540e\u7aef\u7684\u5173\u952e\u3002<\/li>\n<\/ul>\n<p>\u957f\u8fde\u63a5\u7684\u9690\u6027\u6210\u672c&#xff1a;\u7f51\u7edc\u8d85\u65f6 \u7531\u4e8e\u8fde\u63a5\u4f1a\u957f\u671f\u9a7b\u7559&#xff0c;\u751f\u4ea7\u73af\u5883\u4e2d\u5fc5\u987b\u8b66\u60d5\u6570\u636e\u5e93\u7684\u8d85\u65f6\u7b56\u7565&#xff08;\u5982 MySQL \u7684 wait_timeout&#xff09;\u3002\u5982\u679c\u8fde\u63a5\u5728\u6c60\u4e2d\u95f2\u7f6e\u8fc7\u4e45&#xff0c;\u670d\u52a1\u7aef\u4f1a\u4e3b\u52a8\u65ad\u5f00\u3002\u82e5\u6b64\u65f6\u88ab\u501f\u7528&#xff0c;\u7a0b\u5e8f\u5c06\u62a5\u9519 gone away\u3002\u56e0\u6b64&#xff0c;\u6b63\u89c4\u7684\u8fde\u63a5\u6c60\u5fc5\u987b\u914d\u5907\u5fc3\u8df3\u4fdd\u6d3b\u673a\u5236&#xff08;\u5982\u6267\u884c SELECT 1&#xff09;\u548c\u81ea\u52a8\u91cd\u8fde\u7b56\u7565&#xff0c;\u786e\u4fdd\u501f\u51fa\u7684\u957f\u8fde\u63a5\u59cb\u7ec8\u5904\u4e8e\u201c\u6d3b\u6027\u201d\u72b6\u6001\u3002<\/p>\n<h4>3.4 \u957f\u8fde\u63a5\u4ec0\u4e48\u65f6\u5019\u771f\u6b63\u91ca\u653e&#xff1f;&#xff08;\u9ad8\u9891\u751f\u4ea7\u7591\u95ee&#xff09;<\/h4>\n<p>\u5728\u5398\u6e05\u4e86\u201c\u8fde\u63a5\u6c60\u5fc5\u987b\u4f9d\u8d56\u957f\u8fde\u63a5\u201d\u4e4b\u540e&#xff0c;\u4e00\u4e2a\u66f4\u76f4\u63a5\u7684\u751f\u4ea7\u95ee\u9898\u968f\u4e4b\u800c\u6765&#xff1a;\u8fd9\u4e9b\u957f\u8fde\u63a5\u4ec0\u4e48\u65f6\u5019\u624d\u771f\u6b63\u7269\u7406\u65ad\u5f00&#xff1f;\u662f\u7a0b\u5e8f\u4e3b\u52a8\u53d1\u8d77\u91ca\u653e\u6307\u4ee4\u5417&#xff1f;<\/p>\n<p>\u7b54\u6848\u662f&#xff1a;\u4f1a&#xff0c;\u800c\u4e14\u5fc5\u987b\u7531\u7a0b\u5e8f&#xff08;\u6216\u8fde\u63a5\u6c60\u7ba1\u7406\u5668&#xff09;\u4e3b\u52a8\u53d1\u8d77&#xff0c;\u4f46\u5b58\u5728 4 \u79cd\u622a\u7136\u4e0d\u540c\u7684\u573a\u666f\u3002 \u7edd\u4e0d\u80fd\u6307\u671b\u6570\u636e\u5e93\u670d\u52a1\u7aef\u5355\u65b9\u9762\u5e2e\u4f60\u7ba1\u7406\u3002<\/p>\n<p>\u9996\u5148\u8981\u533a\u5206\u4e00\u4e2a\u6781\u6613\u6df7\u6dc6\u7684\u6982\u5ff5&#xff1a;\u201c\u5f52\u8fd8\u201d \u548c \u201c\u91ca\u653e\u201d \u5728\u8fde\u63a5\u6c60\u8bed\u5883\u4e0b\u662f\u4e24\u4e2a\u5b8c\u5168\u4e0d\u540c\u7684\u52a8\u4f5c&#xff1a;<\/p>\n<ul>\n<li>\u5f52\u8fd8&#xff08;Release&#xff09;&#xff1a;\u8fde\u63a5\u4e0d\u65ad\u5f00&#xff0c;\u53ea\u662f\u5f52\u8fd8\u7ed9\u961f\u5217&#xff0c;\u4f9b\u5176\u4ed6\u8bf7\u6c42\u590d\u7528\u3002<\/li>\n<li>\u91ca\u653e&#xff08;Close \/ Destroy&#xff09;&#xff1a;\u8fde\u63a5\u5f7b\u5e95\u65ad\u5f00&#xff0c;\u9500\u6bc1 TCP \u8fde\u63a5\u548c\u6570\u636e\u5e93\u4f1a\u8bdd\u3002<\/li>\n<\/ul>\n<p>\u4e0b\u9762\u8be6\u8ff0\u957f\u8fde\u63a5\u771f\u6b63\u91ca\u653e\u7684\u56db\u79cd\u573a\u666f&#xff1a;<\/p>\n<hr \/>\n<p>\u573a\u666f\u4e00&#xff1a;\u7a0b\u5e8f\u4e3b\u52a8\u91ca\u653e&#xff08;\u6700\u89c4\u8303\u3001\u6700\u63a8\u8350&#xff09;<\/p>\n<p>\u8fd9\u662f\u6700\u7406\u60f3\u7684\u3001\u4e5f\u662f\u6b63\u89c4\u8fde\u63a5\u6c60\u5fc5\u987b\u5b9e\u73b0\u7684\u80fd\u529b\u3002<\/p>\n<ul>\n<li>\u89e6\u53d1\u65f6\u673a&#xff1a;\u5e94\u7528\u6b63\u5e38\u5173\u95ed&#xff08;\u5982\u670d\u52a1\u91cd\u542f\u3001\u53d1\u5e03\u65b0\u7248\u672c&#xff09;\u3001\u8fde\u63a5\u6c60\u4e3b\u52a8\u7f29\u5bb9\u3001\u6216\u8005\u68c0\u6d4b\u5230\u8be5\u8fde\u63a5\u5df2\u5931\u6548&#xff08;\u5982\u6267\u884c SELECT 1 \u5931\u8d25&#xff09;\u3002<\/li>\n<li>\u884c\u4e3a&#xff1a;\u7a0b\u5e8f\u663e\u5f0f\u8c03\u7528\u5e95\u5c42\u9a71\u52a8\u7684 close() \/ disconnect() \u65b9\u6cd5&#xff08;\u6216 unset($conn) \/ $conn &#061; null&#xff09;&#xff0c;\u5411\u6570\u636e\u5e93\u53d1\u9001 FIN \u5305&#xff0c;\u5b8c\u6210\u56db\u6b21\u6325\u624b\u3002<\/li>\n<li>\u4ee3\u7801\u4f53\u73b0&#xff08;PHP\/Swoole \u793a\u4f8b&#xff09;&#xff1a;<span class=\"token comment\">\/\/ \u5728\u8fde\u63a5\u6c60\u7684 close() \u65b9\u6cd5\u4e2d&#xff0c;\u904d\u5386\u961f\u5217\u5e76\u9010\u4e2a\u9500\u6bc1<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">close<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token keyword return-type\">void<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">pool<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">isEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token variable\">$conn<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">pool<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">pop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">unset<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$conn<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u89e6\u53d1 PDO \u5bf9\u8c61\u7684\u6790\u6784&#xff0c;\u5e95\u5c42\u4e3b\u52a8\u65ad\u5f00\u4f1a\u8bdd<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">pool<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>\u8fd9\u662f\u751f\u4ea7\u73af\u5883\u552f\u4e00\u8be5\u4f9d\u8d56\u7684\u65b9\u5f0f&#xff1a;Kubernetes \u6eda\u52a8\u66f4\u65b0\u6216 Supervisor \u91cd\u542f\u8fdb\u7a0b\u65f6&#xff0c;\u5fc5\u987b\u7531\u4e3b\u8fdb\u7a0b\u6355\u83b7\u4fe1\u53f7&#xff0c;\u4e3b\u52a8\u5173\u95ed\u8fde\u63a5\u6c60&#xff0c;\u4f18\u96c5\u91ca\u653e\u6240\u6709\u957f\u8fde\u63a5\u3002<\/li>\n<\/ul>\n<hr \/>\n<p>\u573a\u666f\u4e8c&#xff1a;\u8fde\u63a5\u6c60\u7b56\u7565\u4e3b\u52a8\u91ca\u653e&#xff08;\u8d85\u65f6\u6dd8\u6c70&#xff09;<\/p>\n<p>\u5373\u4fbf\u8fde\u63a5\u662f\u201c\u7a7a\u95f2\u201d\u4e14\u201c\u5065\u5eb7\u201d\u7684&#xff0c;\u4e3a\u4e86\u907f\u514d\u5806\u79ef\u548c\u5185\u5b58\u6cc4\u6f0f&#xff0c;\u8fde\u63a5\u6c60\u4e5f\u4f1a\u4e3b\u52a8\u91ca\u653e\u5b83\u4eec\u3002<\/p>\n<ul>\n<li>\u89e6\u53d1\u65f6\u673a&#xff1a;\u8fde\u63a5\u7a7a\u95f2\u65f6\u95f4\u8d85\u8fc7 idleTimeout&#xff08;\u5982 10 \u5206\u949f\u672a\u4f7f\u7528&#xff09;&#xff0c;\u6216\u8005\u8fde\u63a5\u603b\u5b58\u6d3b\u65f6\u95f4\u8d85\u8fc7 maxLifetime&#xff08;\u5982 8 \u5c0f\u65f6&#xff09;\u3002<\/li>\n<li>\u884c\u4e3a&#xff1a;\u8fde\u63a5\u6c60\u7684\u5185\u90e8\u5b9a\u65f6\u5668&#xff08;\u6216\u501f\u51fa\u65f6\u7684\u68c0\u67e5\u903b\u8f91&#xff09;\u53d1\u73b0\u8be5\u8fde\u63a5\u8d85\u9f84&#xff0c;\u4e3b\u52a8\u8c03\u7528 close() \u5c06\u5176\u9500\u6bc1&#xff0c;\u968f\u540e\u5728\u961f\u5217\u4e2d\u8865\u5efa\u4e00\u6761\u65b0\u8fde\u63a5\u3002<\/li>\n<li>\u73b0\u5b9e\u610f\u4e49&#xff1a;\u5373\u4f7f\u4f60\u4e0d\u91ca\u653e&#xff0c;MySQL \u7684 wait_timeout&#xff08;\u9ed8\u8ba4 8 \u5c0f\u65f6&#xff09;\u4e5f\u4f1a\u8e22\u6389\u5b83\u3002\u4f46\u8ba9\u6570\u636e\u5e93\u8e22\u6389\u4f60\u662f\u6781\u5176\u88ab\u52a8\u7684&#xff0c;\u56e0\u4e3a\u5e94\u7528\u4f1a\u62ff\u5230\u65ad\u8fde\u62a5\u9519&#xff08;gone away&#xff09;\u3002\u66f4\u597d\u7684\u505a\u6cd5\u662f\u7a0b\u5e8f\u4e3b\u52a8\u5728\u8d85\u65f6\u524d\u5237\u65b0\u8fde\u63a5\u3002<\/li>\n<\/ul>\n<hr \/>\n<p>\u573a\u666f\u4e09&#xff1a;\u6570\u636e\u5e93\u670d\u52a1\u7aef\u5355\u65b9\u9762\u5f3a\u5236\u91ca\u653e&#xff08;\u88ab\u52a8&#xff0c;\u6700\u5371\u9669&#xff09;<\/p>\n<p>\u8fd9\u662f\u4f60\u65e0\u6cd5\u63a7\u5236\u7684&#xff0c;\u4e14\u6781\u6613\u5f15\u53d1\u751f\u4ea7\u4e8b\u6545\u3002<\/p>\n<ul>\n<li>\u89e6\u53d1\u65f6\u673a&#xff1a;MySQL \u6267\u884c kill [connection_id]\u3001\u6570\u636e\u5e93\u4e3b\u4ece\u5207\u6362\u3001\u7f51\u7edc\u9632\u706b\u5899\u8d85\u65f6\u3001wait_timeout \u8fbe\u5230\u4e0a\u9650\u3002<\/li>\n<li>\u884c\u4e3a&#xff1a;\u670d\u52a1\u7aef\u76f4\u63a5\u53d1\u9001 RST \u5305\u5f3a\u5236\u7ec8\u6b62\u8fde\u63a5&#xff0c;\u5ba2\u6237\u7aef\u5b8c\u5168\u4e0d\u77e5\u60c5\u3002<\/li>\n<li>\u540e\u679c&#xff1a;\u8fde\u63a5\u6c60\u91cc\u7684\u961f\u5217\u8fd8\u4fdd\u5b58\u7740\u8fd9\u4e2a\u201c\u50f5\u5c38\u8fde\u63a5\u201d\u5bf9\u8c61\u3002\u4e0b\u4e00\u6b21\u8bf7\u6c42\u501f\u51fa\u5e76\u6267\u884c SQL \u65f6&#xff0c;\u4f1a\u7acb\u523b\u629b\u51fa MySQL server has gone away \u9519\u8bef\u3002<\/li>\n<li>\u5e94\u5bf9\u7b56\u7565&#xff1a;\u5fc5\u987b\u4f9d\u8d56\u6587\u7ae0\u7b2c 6 \u8282\u63d0\u5230\u7684\u5065\u5eb7\u68c0\u67e5\u2014\u2014\u501f\u51fa\u65f6\u5148\u6267\u884c select 1&#xff0c;\u63a2\u6d4b\u5230\u8fde\u63a5\u5df2\u6b7b&#xff0c;\u5219\u7531\u7a0b\u5e8f\u4e3b\u52a8\u91ca\u653e\u8be5\u50f5\u5c38\u5bf9\u8c61&#xff0c;\u65b0\u5efa\u8fde\u63a5\u66ff\u4ee3\u3002<\/li>\n<\/ul>\n<hr \/>\n<p>\u573a\u666f\u56db&#xff1a;\u8fdb\u7a0b\u5f02\u5e38\u5d29\u6e83&#xff08;\u64cd\u4f5c\u7cfb\u7edf\u56de\u6536&#xff09;<\/p>\n<ul>\n<li>\u89e6\u53d1\u65f6\u673a&#xff1a;PHP-FPM \u8fdb\u7a0b\u6b7b\u6389\u3001Swoole \u8fdb\u7a0b\u88ab kill -9 \u5f3a\u6740\u3001Java OOM \u5d29\u6e83\u3002<\/li>\n<li>\u884c\u4e3a&#xff1a;\u6b64\u65f6\u7a0b\u5e8f\u6765\u4e0d\u53ca\u6267\u884c close()\u3002\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u4f1a\u5728\u8fdb\u7a0b\u9000\u51fa\u65f6&#xff0c;\u81ea\u52a8\u6e05\u7406\u8be5\u8fdb\u7a0b\u6253\u5f00\u7684\u6240\u6709\u6587\u4ef6\u63cf\u8ff0\u7b26&#xff08;\u5305\u62ec Socket&#xff09;&#xff0c;\u5411\u6570\u636e\u5e93\u53d1\u9001 RST \u5305\u91ca\u653e\u8fde\u63a5\u3002<\/li>\n<li>\u540e\u679c&#xff1a;\u5bf9\u4e8e\u6570\u636e\u5e93\u6765\u8bf4&#xff0c;\u8fde\u63a5\u77ac\u95f4\u6d88\u5931&#xff0c;\u672a\u56de\u6eda\u7684\u4e8b\u52a1\u4f1a\u88ab\u81ea\u52a8\u56de\u6eda\u3002\u4f46\u8fd9\u662f\u4e00\u79cd\u4e0d\u4f18\u96c5\u7684\u91ca\u653e&#xff0c;\u5728\u65e5\u5fd7\u4e2d\u53ef\u80fd\u7559\u4e0b\u8b66\u544a&#xff08;\u5982 PHP Warning: Swoole\\\\Coroutine\\\\Channel::pop(): connection closed&#xff09;\u3002<\/li>\n<\/ul>\n<hr \/>\n<p>\u91ca\u653e\u65b9\u5f0f\u51b3\u65ad\u6e05\u5355<\/p>\n<table>\n<tr>\u91ca\u653e\u65b9\u5f0f\u4e3b\u52a8\/\u88ab\u52a8\u662f\u5426\u89c4\u8303\u751f\u4ea7\u73af\u5883\u4f9d\u8d56\u5ea6<\/tr>\n<tbody>\n<tr>\n<td align=\"left\">\u7a0b\u5e8f\u8c03\u7528 close()&#xff08;\u4f18\u96c5\u5173\u95ed&#xff09;<\/td>\n<td align=\"left\">\u4e3b\u52a8<\/td>\n<td align=\"left\">\u2705 \u6700\u4f73<\/td>\n<td align=\"left\">\u5fc5\u987b\u5b9e\u73b0<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">\u8fde\u63a5\u6c60\u8fbe\u5230 maxLifetime \u4e3b\u52a8\u9500\u6bc1<\/td>\n<td align=\"left\">\u4e3b\u52a8<\/td>\n<td align=\"left\">\u2705 \u826f\u597d<\/td>\n<td align=\"left\">\u5f3a\u70c8\u63a8\u8350\u914d\u7f6e<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">\u5065\u5eb7\u68c0\u67e5\u53d1\u73b0\u5931\u6548\u540e\u91cd\u5efa<\/td>\n<td align=\"left\">\u4e3b\u52a8&#xff08;\u8865\u6551&#xff09;<\/td>\n<td align=\"left\">\u2705 \u5fc5\u5907<\/td>\n<td align=\"left\">\u5fc5\u987b\u5b9e\u73b0<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">\u6570\u636e\u5e93 wait_timeout \u8d85\u65f6\u8e22\u6389<\/td>\n<td align=\"left\">\u88ab\u52a8<\/td>\n<td align=\"left\">\u274c \u5371\u9669<\/td>\n<td align=\"left\">\u7edd\u4e0d\u80fd\u4f9d\u8d56<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">\u8fdb\u7a0b kill -9 \u5d29\u6e83&#xff08;OS \u56de\u6536&#xff09;<\/td>\n<td align=\"left\">\u88ab\u52a8<\/td>\n<td align=\"left\">\u274c \u5f02\u5e38<\/td>\n<td align=\"left\">\u4eba\u5de5\u4ecb\u5165\u5904\u7406<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6700\u7ec8\u5efa\u8bae&#xff1a;\u6c38\u8fdc\u628a\u4f60\u7684\u957f\u8fde\u63a5\u5f53\u4f5c\u201c\u79df\u7684\u623f\u5b50\u201d\u2014\u2014\u4f60&#xff08;\u7a0b\u5e8f&#xff09;\u8d1f\u8d23\u5f52\u8fd8&#xff08;\u91ca\u653e&#xff09;&#xff0c;\u623f\u4e1c&#xff08;\u6570\u636e\u5e93&#xff09;\u53ea\u662f\u5728\u4f60\u4e0d\u9075\u5b88\u89c4\u5219\u65f6\u624d\u4f1a\u5f3a\u5236\u6e05\u9000\u3002\u5728\u5b9e\u9645\u7f16\u7801\u4e2d&#xff0c;\u5343\u4e07\u4e0d\u8981\u53ea\u4f9d\u8d56 finally \u4e2d\u7684 releaseConnection&#xff08;\u8fd9\u4ec5\u662f\u5f52\u8fd8&#xff09;&#xff0c;\u4e00\u5b9a\u8981\u5728\u670d\u52a1\u5173\u95ed\u811a\u672c\u3001\u8fde\u63a5\u8fc7\u671f\u7b56\u7565\u548c\u5065\u5eb7\u68c0\u67e5\u5931\u8d25\u4e09\u4e2a\u73af\u8282&#xff0c;\u4e3b\u52a8\u8c03\u7528\u5e95\u5c42\u7684 close \u65b9\u6cd5&#xff0c;\u53ea\u6709\u8fd9\u6837&#xff0c;\u4f60\u624d\u80fd\u5f7b\u5e95\u907f\u514d\u8fde\u63a5\u6570\u6cc4\u6f0f\u548c\u670d\u52a1\u7aef\u5806\u79ef TIME_WAIT \u72b6\u6001\u7684\u7aef\u53e3\u3002<\/p>\n<hr \/>\n<p>\u8865\u5145\u8ffd\u95ee&#xff1a;\u5982\u679c\u7a0b\u5e8f\u4e00\u76f4\u4e0d\u4e3b\u52a8\u91ca\u653e&#xff0c;\u4f46\u4e5f\u4e0d\u53d1\u5fc3\u8df3&#xff0c;\u8fde\u63a5\u4f1a\u6c38\u8fdc\u4fdd\u6301\u5417&#xff1f;<\/p>\n<p>\u8fd9\u662f\u4e00\u4e2a\u975e\u5e38\u73b0\u5b9e\u7684\u62c5\u5fe7\u3002\u7b54\u6848\u662f&#xff1a;\u8fde\u63a5\u4e0d\u4f1a\u6c38\u8fdc\u4fdd\u6301&#xff0c;\u5b83\u5fc5\u5b9a\u4f1a\u5728\u4e00\u5b9a\u65f6\u95f4\u540e\u81ea\u52a8\u65ad\u5f00\u3002 \u5177\u4f53\u7531\u8c01\u65ad\u5f00\u3001\u591a\u4e45\u65ad\u5f00&#xff0c;\u53d6\u51b3\u4e8e\u4e09\u5c42\u8d85\u65f6\u673a\u5236\u7684\u5171\u540c\u4f5c\u7528\u3002\u4e0b\u9762\u6309\u201c\u65f6\u95f4\u5148\u540e\u201d\u548c\u201c\u5c42\u7ea7\u9ad8\u4f4e\u201d\u4e3a\u4f60\u62c6\u89e3&#xff1a;<\/p>\n<table>\n<tr>\u65f6\u95f4\u8282\u70b9\u89e6\u53d1\u8005\u884c\u4e3a\u5e94\u7528\u7a0b\u5e8f\u72b6\u6001<\/tr>\n<tbody>\n<tr>\n<td align=\"left\">15\u5206\u949f ~ 1\u5c0f\u65f6<\/td>\n<td align=\"left\">\u9632\u706b\u5899\/\u8d1f\u8f7d\u5747\u8861&#xff08;\u5982 AWS SLB\u3001HAProxy&#xff09;<\/td>\n<td align=\"left\">\u6e05\u9664\u4f1a\u8bdd\u8868&#xff0c;\u9759\u9ed8\u4e22\u5f03\u6570\u636e\u5305<\/td>\n<td align=\"left\">\u8fde\u63a5\u770b\u4f3c\u5b58\u5728&#xff0c;\u5b9e\u9645\u5df2\u201c\u6b7b\u201d<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">2\u5c0f\u65f6&#xff08;\u9ed8\u8ba4&#xff09;<\/td>\n<td align=\"left\">\u64cd\u4f5c\u7cfb\u7edf&#xff08;TCP Keepalive&#xff09;<\/td>\n<td align=\"left\">\u53d1\u51fa\u63a2\u6d4b\u5305&#xff0c;\u82e5\u672a\u56de\u5e94\u5219\u56de\u6536\u7aef\u53e3<\/td>\n<td align=\"left\">\u8c03\u7528 write() \u65f6\u6536\u5230 Broken pipe \u9519\u8bef<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">8\u5c0f\u65f6&#xff08;\u9ed8\u8ba4&#xff09;<\/td>\n<td align=\"left\">MySQL&#xff08;wait_timeout&#xff09;<\/td>\n<td align=\"left\">\u5355\u65b9\u9762\u53d1\u9001 RST \u5305\u5f3a\u884c\u65ad\u8fde<\/td>\n<td align=\"left\">\u6267\u884c SQL \u65f6\u6536\u5230 gone away \u9519\u8bef&#xff08;\u6700\u5e38\u89c1&#xff09;<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">\u6c38\u4e0d\u8d85\u65f6&#xff08;\u6781\u7aef&#xff09;<\/td>\n<td align=\"left\">\u53cc\u65b9\u64cd\u4f5c\u7cfb\u7edf\u90fd\u5173\u95ed Keepalive<\/td>\n<td align=\"left\">\u7406\u8bba\u4e0a ESTABLISHED \u72b6\u6001\u4f1a\u6c38\u8fdc\u5b58\u5728<\/td>\n<td align=\"left\">\u4f46\u8fd9\u4f1a\u8017\u5c3d\u6570\u636e\u5e93\u5185\u5b58&#xff0c;\u5c5e\u4e8e\u4e25\u91cd\u8fd0\u7ef4\u6545\u969c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6838\u5fc3\u7ed3\u8bba&#xff1a;<\/p>\n<ul>\n<li>\u5982\u679c\u7a0b\u5e8f\u65e2\u4e0d\u4e3b\u52a8\u91ca\u653e&#xff0c;\u4e5f\u4e0d\u53d1\u4efb\u4f55\u5fc3\u8df3\u5305&#xff0c;\u6700\u957f 8 \u5c0f\u65f6&#xff08;MySQL \u9ed8\u8ba4&#xff09;\u540e\u4e00\u5b9a\u4f1a\u88ab\u670d\u52a1\u7aef\u8e22\u6389\u3002<\/li>\n<li>\u5982\u679c\u7a0b\u5e8f\u6301\u7eed\u53d1\u9001\u5fc3\u8df3\u5305&#xff08;\u5982\u6bcf 5 \u5206\u949f SELECT 1&#xff09;&#xff0c;\u5219\u6240\u6709\u8d85\u65f6\u8ba1\u65f6\u5668\u90fd\u4f1a\u88ab\u91cd\u7f6e&#xff0c;\u8fd9\u6761\u957f\u8fde\u63a5\u7406\u8bba\u4e0a\u53ef\u4ee5\u65e0\u9650\u671f\u4fdd\u6301&#xff08;\u53ea\u8981\u53cc\u65b9\u4e0d\u91cd\u542f&#xff09;\u3002<\/li>\n<li>\u4f46\u5728\u751f\u4ea7\u73af\u5883\u4e2d&#xff0c;\u4f9d\u9760\u5fc3\u8df3\u201c\u7eed\u547d\u201d\u53ea\u662f\u6cbb\u6807&#xff0c;\u4e3b\u52a8\u91ca\u653e\u624d\u662f\u6cbb\u672c\u3002\u56e0\u4e3a\u4f60\u65e0\u6cd5\u63a7\u5236\u9632\u706b\u5899\u7b56\u7565\u3001\u6570\u636e\u5e93\u8fd0\u7ef4\u53d8\u66f4\u7b49\u5916\u90e8\u56e0\u7d20&#xff0c;\u552f\u4e00\u53ef\u9760\u7684\u65b9\u5f0f\u5c31\u662f\u7a0b\u5e8f\u4e3b\u52a8\u7ba1\u7406\u8fde\u63a5\u7684\u751f\u547d\u5468\u671f\u3002<\/li>\n<\/ul>\n<h4>3.5 \u8fde\u63a5\u6c60\u7684\u6838\u5fc3\u6570\u636e\u7ed3\u6784&#xff1a;\u961f\u5217&#xff08;\u5148\u8fdb\u5148\u51fa&#xff09;<\/h4>\n<p>\u4e00\u4e2a\u5178\u578b\u7684\u8fde\u63a5\u6c60\u5185\u90e8\u5305\u542b&#xff1a;<\/p>\n<ul>\n<li>\u4e00\u4e2a\u7a7a\u95f2\u8fde\u63a5\u961f\u5217&#xff08;\u5b58\u653e\u5f53\u524d\u53ef\u7528\u7684\u8fde\u63a5\u5bf9\u8c61&#xff09;\u3002<\/li>\n<li>\u5df2\u501f\u7528\u8fde\u63a5\u5217\u8868&#xff08;\u8bb0\u5f55\u54ea\u4e9b\u8fde\u63a5\u6b63\u5728\u88ab\u4f7f\u7528&#xff0c;\u4fbf\u4e8e\u7edf\u8ba1\u548c\u56de\u6536&#xff09;\u3002<\/li>\n<li>\u6700\u5927\u8fde\u63a5\u6570&#xff08;max_connections&#xff09;\u548c \u5f53\u524d\u603b\u8fde\u63a5\u6570\u3002<\/li>\n<\/ul>\n<p>\u501f\u51fa&#xff08;Borrow&#xff09;\u6d41\u7a0b&#xff1a;<\/p>\n<li>\u5e94\u7528\u8c03\u7528 getConnection()\u3002<\/li>\n<li>\u4ece\u7a7a\u95f2\u961f\u5217\u5934\u90e8 pop \u4e00\u4e2a\u8fde\u63a5\u3002\n<ul>\n<li>\u5982\u679c\u961f\u5217\u975e\u7a7a&#xff0c;\u76f4\u63a5\u8fd4\u56de\u8be5\u8fde\u63a5&#xff08;\u6807\u8bb0\u4e3a\u5df2\u501f\u7528&#xff09;\u3002<\/li>\n<li>\u5982\u679c\u961f\u5217\u4e3a\u7a7a&#xff1a;\n<ul>\n<li>\u82e5\u5f53\u524d\u603b\u8fde\u63a5\u6570 &lt; \u6700\u5927\u8fde\u63a5\u6570&#xff0c;\u5219 \u65b0\u5efa\u4e00\u4e2a\u8fde\u63a5&#xff0c;\u603b\u8ba1\u6570 &#043;1&#xff0c;\u8fd4\u56de\u3002<\/li>\n<li>\u82e5\u5df2\u8fbe\u4e0a\u9650&#xff0c;\u5219 \u963b\u585e\u7b49\u5f85&#xff08;\u5728\u534f\u7a0b\/\u7ebf\u7a0b\u6a21\u578b\u4e2d&#xff0c;\u5f53\u524d\u6267\u884c\u6d41\u6302\u8d77&#xff0c;\u76f4\u5230\u6709\u8fde\u63a5\u5f52\u8fd8&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\u8fd4\u56de\u8fde\u63a5\u7ed9\u4e1a\u52a1\u4ee3\u7801\u3002<\/li>\n<p>\u5f52\u8fd8&#xff08;Release&#xff09;\u6d41\u7a0b&#xff1a;<\/p>\n<li>\u5e94\u7528\u4f7f\u7528\u5b8c\u6bd5&#xff0c;\u8c03\u7528 releaseConnection($conn)\u3002<\/li>\n<li>\u5c06\u8fde\u63a5\u63a8\u5165\u7a7a\u95f2\u961f\u5217\u5c3e\u90e8&#xff08;push&#xff09;\u3002<\/li>\n<li>\u5982\u679c\u6709\u6b63\u5728\u7b49\u5f85\u7684\u534f\u7a0b\/\u7ebf\u7a0b&#xff0c;\u5524\u9192\u5176\u4e2d\u4e00\u4e2a&#xff08;\u7531\u961f\u5217\u673a\u5236\u81ea\u52a8\u5b8c\u6210&#xff09;\u3002<\/li>\n<p>\u8fd9\u79cd \u961f\u5217 &#043; \u963b\u585e\/\u5524\u9192 \u6a21\u578b&#xff0c;\u4fdd\u8bc1\u4e86\u8fde\u63a5\u7684\u516c\u5e73\u590d\u7528&#xff0c;\u4e14\u4e0d\u4f1a\u8d85\u51fa\u6700\u5927\u9650\u5236\u3002<\/p>\n<h4>3.6 \u6df1\u5165\u7406\u89e3&#xff1a;\u961f\u5217\u4e2d\u5230\u5e95\u4fdd\u5b58\u7684\u662f\u4ec0\u4e48&#xff1f;&#xff08;\u9ad8\u9891\u7591\u95ee\u89e3\u6790&#xff09;<\/h4>\n<p>\u5f88\u591a\u521d\u5b66\u8005\u521a\u63a5\u89e6\u8fde\u63a5\u6c60\u65f6&#xff0c;\u603b\u4f1a\u7591\u60d1&#xff1a;\u201c\u961f\u5217\u91cc\u4fdd\u5b58\u7684\u662f\u8fde\u63a5\u7684\u72b6\u6001&#xff08;\u7a7a\u95f2\/\u5fd9\u788c&#xff09;\u5417&#xff1f;\u201d<\/p>\n<p>\u7b54\u6848\u662f\u786e\u5b9a\u7684&#xff1a;\u961f\u5217\u4e2d\u4fdd\u5b58\u7684\u4e0d\u662f\u72b6\u6001\u6807\u8bb0&#xff0c;\u800c\u662f\u5b9e\u5b9e\u5728\u5728\u7684\u8fde\u63a5\u5bf9\u8c61&#xff08;\u5b9e\u4f8b\/\u8d44\u6e90&#xff09;\u672c\u8eab\u3002\u4ee5 Swoole \u4e3a\u4f8b&#xff0c;Channel \u4e2d\u8fdb\u8fdb\u51fa\u51fa\u7684\u5c31\u662f PDOPool \u5bf9\u8c61&#xff08;\u5b83\u5185\u90e8\u5c01\u88c5\u4e86\u5e95\u5c42\u7684 PDO \u8fde\u63a5&#xff09;\u3002<\/p>\n<p>\u90a3\u4e48\u8fde\u63a5\u7684\u72b6\u6001&#xff08;\u7a7a\u95f2\/\u5fd9\u788c&#xff09;\u662f\u5982\u4f55\u4f53\u73b0\u7684\u5462&#xff1f;\u7b54\u6848\u975e\u5e38\u5de7\u5999\u2014\u2014\u901a\u8fc7\u8fde\u63a5\u5bf9\u8c61\u662f\u5426\u5b58\u5728\u4e8e\u961f\u5217\u4e2d\u6765\u9690\u542b\u8868\u793a&#xff1a;<\/p>\n<ul>\n<li>\u7a7a\u95f2\u72b6\u6001&#xff08;Idle&#xff09;&#xff1a;\u8fde\u63a5\u5bf9\u8c61\u5728\u961f\u5217\u91cc\u3002\u5b83\u5b89\u9759\u5730\u7b49\u5f85\u7740&#xff0c;\u53ea\u8981\u8fd8\u5728\u961f\u5217\u4e2d&#xff0c;\u5c31\u4ee3\u8868\u5b83\u662f\u7a7a\u95f2\u7684\u3002<\/li>\n<li>\u5fd9\u788c\u72b6\u6001&#xff08;Busy&#xff09;&#xff1a;\u8fde\u63a5\u5bf9\u8c61\u4e0d\u5728\u961f\u5217\u91cc&#xff08;\u88ab pop() \u79fb\u51fa\u4e86&#xff09;\u3002\u6b64\u65f6\u5b83\u6b63\u88ab\u4e1a\u52a1\u4ee3\u7801\u6301\u6709&#xff0c;\u76f4\u5230\u4e1a\u52a1\u4ee3\u7801\u8c03\u7528 push() \u5f52\u8fd8&#xff0c;\u5b83\u624d\u4f1a\u91cd\u65b0\u56de\u5230\u961f\u5217\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u79cd\u8bbe\u8ba1\u65e0\u9700\u989d\u5916\u7ef4\u62a4\u590d\u6742\u7684\u9501\u6216\u5e76\u53d1\u72b6\u6001\u8868&#xff0c;\u5229\u7528\u961f\u5217\u201c\u5b58\u5728\u5373\u7a7a\u95f2&#xff0c;\u4e0d\u5728\u5373\u5fd9\u788c\u201d\u7684\u7279\u6027&#xff0c;\u5929\u7136\u5b9e\u73b0\u4e86\u72b6\u6001\u7ba1\u7406\u3002\u4f46\u8bf7\u6ce8\u610f&#xff1a;\u8fde\u63a5\u6c60\u53ea\u7ba1\u201c\u642c\u8fd0\u201d\u5bf9\u8c61&#xff0c;\u4e0d\u8d1f\u8d23\u201c\u6e05\u6d17\u201d\u5bf9\u8c61\u5185\u90e8\u7684\u4e1a\u52a1\u72b6\u6001&#xff08;\u5982\u672a\u63d0\u4ea4\u7684\u4e8b\u52a1\u3001\u4fee\u6539\u540e\u7684\u5b57\u7b26\u96c6&#xff09;\u3002\u56e0\u6b64&#xff0c;\u5982\u679c\u4f60\u7684\u4e1a\u52a1\u5f00\u542f\u4e86\u4e8b\u52a1&#xff0c;\u52a1\u5fc5\u5728 finally \u5757\u4e2d\u5f52\u8fd8\u8fde\u63a5\u524d\u6267\u884c rollback&#xff0c;\u4fdd\u8bc1\u5f52\u8fd8\u7684\u8fde\u63a5\u662f\u201c\u5e72\u5e72\u51c0\u51c0\u201d\u7684&#xff0c;\u5426\u5219\u4e0b\u4e00\u4e2a\u8bf7\u6c42\u4f1a\u5e26\u7740\u4e0a\u4e00\u4e2a\u4e8b\u52a1\u64cd\u4f5c&#xff0c;\u5bfc\u81f4\u4e25\u91cd\u7684\u6570\u636e\u9519\u4e71\u3002<\/p>\n<h4>3.7 \u963b\u585e\u961f\u5217\u4e0e\u534f\u7a0b\/\u7ebf\u7a0b\u8c03\u5ea6<\/h4>\n<p>\u5728 Swoole \u4e2d&#xff0c;Swoole\\\\Coroutine\\\\Channel \u662f\u4e00\u4e2a\u534f\u7a0b\u5b89\u5168\u7684\u961f\u5217&#xff0c;\u5b83\u7684 pop() \u65b9\u6cd5\u5728\u961f\u5217\u4e3a\u7a7a\u65f6\u4f1a\u81ea\u52a8\u6302\u8d77\u5f53\u524d\u534f\u7a0b&#xff0c;\u76f4\u5230\u6709\u6570\u636e\u53ef\u8bfb&#xff1b;push() \u5219\u4f1a\u5524\u9192\u7b49\u5f85\u7684\u534f\u7a0b\u3002\u8fd9\u6b63\u662f\u8fde\u63a5\u6c60\u963b\u585e\u7b49\u5f85\u7684\u5929\u7136\u5b9e\u73b0&#xff0c;\u65e0\u9700\u624b\u52a8\u5199\u9501\u6216\u6761\u4ef6\u53d8\u91cf\u3002\u5728 Java \u4e2d&#xff0c;LinkedBlockingQueue \u7684 take() \u65b9\u6cd5\u626e\u6f14\u4e86\u5b8c\u5168\u76f8\u540c\u7684\u89d2\u8272\u3002<\/p>\n<hr \/>\n<h3>4. PHP \u8fde\u63a5\u6c60\u5b9e\u6218\u793a\u4f8b&#xff08;\u57fa\u4e8e Swoole&#xff09;<\/h3>\n<h4>4.1 \u81ea\u5b9a\u4e49 MySQL \u8fde\u63a5\u6c60&#xff08;\u5b8c\u6574\u4ee3\u7801&#xff09;<\/h4>\n<p><span class=\"token delimiter important\">&lt;?php<\/span><br \/>\n<span class=\"token keyword\">use<\/span> <span class=\"token package\">Swoole<span class=\"token punctuation\">\\\\<\/span>Coroutine<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">use<\/span> <span class=\"token package\">Swoole<span class=\"token punctuation\">\\\\<\/span>Coroutine<span class=\"token punctuation\">\\\\<\/span>Channel<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">use<\/span> <span class=\"token package\">Swoole<span class=\"token punctuation\">\\\\<\/span>Database<span class=\"token punctuation\">\\\\<\/span>PDOConfig<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">use<\/span> <span class=\"token package\">Swoole<span class=\"token punctuation\">\\\\<\/span>Database<span class=\"token punctuation\">\\\\<\/span>PDOPool<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name-definition class-name\">MySQLPool<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token class-name type-declaration\">Channel<\/span> <span class=\"token variable\">$pool<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword type-declaration\">array<\/span> <span class=\"token variable\">$config<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword type-declaration\">int<\/span> <span class=\"token variable\">$maxConnections<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword type-declaration\">int<\/span> <span class=\"token variable\">$currentConnections<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">__construct<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword type-hint\">array<\/span> <span class=\"token variable\">$config<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword type-hint\">int<\/span> <span class=\"token variable\">$maxConnections<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">config<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token variable\">$config<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">maxConnections<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token variable\">$maxConnections<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">pool<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Channel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$maxConnections<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u9884\u70ed&#xff1a;\u9884\u5148\u521b\u5efa\u8fde\u63a5\u586b\u6ee1\u961f\u5217<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token variable\">$i<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token variable\">$i<\/span> <span class=\"token operator\">&lt;<\/span> <span class=\"token variable\">$maxConnections<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token variable\">$i<\/span><span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">pool<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">createConnection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">currentConnections<\/span><span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">createConnection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token class-name return-type\">PDOPool<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token variable\">$pdoConfig<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">PDOConfig<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token operator\">-&gt;<\/span><span class=\"token function\">withHost<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">config<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string single-quoted-string\">&#039;host&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token operator\">-&gt;<\/span><span class=\"token function\">withPort<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">config<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string single-quoted-string\">&#039;port&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token operator\">-&gt;<\/span><span class=\"token function\">withDbName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">config<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string single-quoted-string\">&#039;database&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token operator\">-&gt;<\/span><span class=\"token function\">withCharset<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">config<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string single-quoted-string\">&#039;charset&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">??<\/span> <span class=\"token string single-quoted-string\">&#039;utf8mb4&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token operator\">-&gt;<\/span><span class=\"token function\">withUsername<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">config<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string single-quoted-string\">&#039;username&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token operator\">-&gt;<\/span><span class=\"token function\">withPassword<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">config<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string single-quoted-string\">&#039;password&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">PDOPool<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$pdoConfig<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u4ece\u6c60\u4e2d\u501f\u7528\u8fde\u63a5&#xff08;\u534f\u7a0b\u5b89\u5168&#xff0c;\u81ea\u52a8\u963b\u585e\u7b49\u5f85&#xff09;<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">getConnection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token class-name return-type\">PDOPool<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u6ce8\u610f&#xff1a;\u5b9e\u9645\u751f\u4ea7\u4e2d\u6b64\u5904\u5e94\u589e\u52a0\u5065\u5eb7\u68c0\u67e5&#xff08;\u5982 ping&#xff09;<\/span><br \/>\n        <span class=\"token variable\">$conn<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">pool<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">pop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token variable\">$conn<\/span> <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token constant\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name class-name-fully-qualified\"><span class=\"token punctuation\">\\\\<\/span>RuntimeException<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string single-quoted-string\">&#039;Failed to get connection from pool&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token variable\">$conn<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u5f52\u8fd8\u8fde\u63a5\u5230\u6c60\u4e2d<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">releaseConnection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name type-declaration\">PDOPool<\/span> <span class=\"token variable\">$conn<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token keyword return-type\">void<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">pool<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$conn<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u6267\u884c\u67e5\u8be2&#xff08;\u81ea\u52a8\u501f\/\u8fd8&#xff09;<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">query<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword type-hint\">string<\/span> <span class=\"token variable\">$sql<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword type-hint\">array<\/span> <span class=\"token variable\">$params<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token keyword return-type\">array<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token variable\">$conn<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">getConnection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token variable\">$stmt<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token variable\">$conn<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">prepare<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$sql<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token variable\">$stmt<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">execute<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$params<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token variable\">$stmt<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">fetchAll<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">finally<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">releaseConnection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$conn<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/**<br \/>\n     * \u5173\u95ed\u6c60&#xff08;\u91ca\u653e\u6240\u6709\u8fde\u63a5&#xff09;<br \/>\n     *\/<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">close<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token keyword return-type\">void<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">pool<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">isEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token variable\">$conn<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">pool<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">pop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">unset<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$conn<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">pool<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>4.2 \u57fa\u7840\u4f7f\u7528\u793a\u4f8b<\/h4>\n<p><span class=\"token comment\">\/\/ \u5728 Swoole \u534f\u7a0b\u5bb9\u5668\u4e2d\u8fd0\u884c<\/span><br \/>\n<span class=\"token function\">Coroutine<span class=\"token punctuation\">\\\\<\/span>run<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">function<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token variable\">$config<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n        <span class=\"token string single-quoted-string\">&#039;host&#039;<\/span>     <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token string single-quoted-string\">&#039;127.0.0.1&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string single-quoted-string\">&#039;port&#039;<\/span>     <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token number\">3306<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string single-quoted-string\">&#039;database&#039;<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token string single-quoted-string\">&#039;test&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string single-quoted-string\">&#039;username&#039;<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token string single-quoted-string\">&#039;root&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string single-quoted-string\">&#039;password&#039;<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token string single-quoted-string\">&#039;secret&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string single-quoted-string\">&#039;charset&#039;<\/span>  <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token string single-quoted-string\">&#039;utf8mb4&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token variable\">$pool<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">MySQLPool<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$config<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token variable\">$coroutines<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token variable\">$i<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token variable\">$i<\/span> <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token variable\">$i<\/span><span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token variable\">$coroutines<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name static-context\">Coroutine<\/span><span class=\"token operator\">::<\/span><span class=\"token function\">create<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">function<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">use<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token variable\">$pool<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token variable\">$result<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token variable\">$pool<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">query<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string single-quoted-string\">&#039;SELECT * FROM users WHERE id &#061; ?&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token function\">rand<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">echo<\/span> <span class=\"token string double-quoted-string\">&#034;Result: &#034;<\/span> <span class=\"token operator\">.<\/span> <span class=\"token function\">json_encode<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$result<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">.<\/span> <span class=\"token constant\">PHP_EOL<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token class-name static-context\">Coroutine<\/span><span class=\"token operator\">::<\/span><span class=\"token function\">join<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$coroutines<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token variable\">$pool<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h4>4.3 \u5173\u952e\u7ec6\u8282\u8bf4\u660e<\/h4>\n<ul>\n<li>Channel \u5bb9\u91cf&#xff1a;\u8bbe\u4e3a maxConnections&#xff0c;\u4fdd\u8bc1\u961f\u5217\u6700\u591a\u5b58\u653e\u8fd9\u4e9b\u8fde\u63a5\u3002<\/li>\n<li>\u963b\u585e\u7b49\u5f85&#xff1a;\u5f53\u5e76\u53d1\u8bf7\u6c42\u6570\u8d85\u8fc7\u8fde\u63a5\u6570\u65f6&#xff0c;pop() \u4f1a\u6302\u8d77\u534f\u7a0b&#xff0c;\u4e0d\u4f1a\u6d88\u8017 CPU \u81ea\u65cb\u3002<\/li>\n<li>\u907f\u514d\u8fde\u63a5\u6cc4\u6f0f&#xff1a;\u52a1\u5fc5\u5728 finally \u5757\u4e2d\u5f52\u8fd8\u8fde\u63a5&#xff0c;\u5426\u5219\u8fde\u63a5\u4f1a\u201c\u4e22\u5931\u201d&#xff0c;\u5bfc\u81f4\u6c60\u9010\u6e10\u8017\u5c3d\u3002<\/li>\n<li>\u5065\u5eb7\u68c0\u67e5&#xff08;\u672a\u5c55\u793a&#xff09;&#xff1a;\u53ef\u5728 getConnection \u4e2d\u589e\u52a0 ping \u68c0\u6d4b&#xff0c;\u82e5\u8fde\u63a5\u5931\u6548\u5219\u91cd\u5efa\u3002<\/li>\n<\/ul>\n<h4>4.4 \u5b9e\u6218\u573a\u666f\u4e00&#xff1a;\u8d44\u91d1\u8f6c\u8d26\u4e8b\u52a1\u5904\u7406&#xff08;\u52a1\u5fc5\u6ce8\u610f\u91cd\u7f6e&#xff09;<\/h4>\n<p>\u5728\u5b9e\u9645\u4e1a\u52a1\u4e2d&#xff0c;\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u5f00\u542f\u4e8b\u52a1\u3002\u4e0b\u9762\u4ee5\u7528\u6237 A \u5411 B \u8f6c\u8d26\u4e3a\u4f8b&#xff0c;\u5c55\u793a\u8fde\u63a5\u6c60\u5728\u4e8b\u52a1\u4e2d\u7684\u6807\u51c6\u5199\u6cd5&#xff1a;<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">transferMoney<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name type-declaration\">MySQLPool<\/span> <span class=\"token variable\">$pool<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword type-hint\">int<\/span> <span class=\"token variable\">$from<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword type-hint\">int<\/span> <span class=\"token variable\">$to<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword type-hint\">float<\/span> <span class=\"token variable\">$amount<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token keyword return-type\">void<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token variable\">$conn<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token variable\">$pool<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">getConnection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <\/p>\n<p>    <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token variable\">$conn<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">beginTransaction<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token variable\">$conn<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">prepare<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string single-quoted-string\">&#039;UPDATE accounts SET balance &#061; balance &#8211; ? WHERE id &#061; ?&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">execute<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token variable\">$amount<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token variable\">$from<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token variable\">$conn<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">prepare<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string single-quoted-string\">&#039;UPDATE accounts SET balance &#061; balance &#043; ? WHERE id &#061; ?&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">execute<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token variable\">$amount<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token variable\">$to<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token variable\">$conn<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">commit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">echo<\/span> <span class=\"token string double-quoted-string\">&#034;\u8f6c\u8d26\u6210\u529f\\\\n&#034;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name class-name-fully-qualified\"><span class=\"token punctuation\">\\\\<\/span>Throwable<\/span> <span class=\"token variable\">$e<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token variable\">$conn<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">rollBack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">echo<\/span> <span class=\"token string double-quoted-string\">&#034;\u8f6c\u8d26\u5931\u8d25: &#034;<\/span> <span class=\"token operator\">.<\/span> <span class=\"token variable\">$e<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">getMessage<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">.<\/span> <span class=\"token string double-quoted-string\">&#034;\\\\n&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">throw<\/span> <span class=\"token variable\">$e<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">finally<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u3010\u6781\u5176\u91cd\u8981\u3011\u5f52\u8fd8\u4e4b\u524d\u786e\u4fdd\u4e8b\u52a1\u5df2\u7ed3\u675f&#xff0c;\u9632\u6b62\u6c61\u67d3\u4e0b\u4e00\u4e2a\u8bf7\u6c42<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token variable\">$conn<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">inTransaction<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token variable\">$conn<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">rollBack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token variable\">$pool<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">releaseConnection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$conn<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8840\u6cea\u6559\u8bad&#xff1a;\u5f88\u591a\u7ebf\u4e0a\u4e8b\u6545\u5c31\u662f\u56e0\u4e3a\u5f00\u53d1\u8005\u5728 catch \u4e2d return \u4e86&#xff0c;\u5374\u5fd8\u8bb0\u5199 finally \u4e2d\u7684 rollBack \u548c releaseConnection&#xff0c;\u5bfc\u81f4\u8fde\u63a5\u6c60\u91cc\u7684\u8fde\u63a5\u5168\u88ab\u672a\u63d0\u4ea4\u7684\u4e8b\u52a1\u201c\u6c61\u67d3\u201d&#xff0c;\u6700\u7ec8\u9020\u6210\u6570\u636e\u5e93\u6b7b\u9501\u6216\u6570\u636e\u9519\u4e71\u3002<\/p>\n<h4>4.5 \u5b9e\u6218\u573a\u666f\u4e8c&#xff1a;\u8fde\u63a5\u6c60\u72b6\u6001\u76d1\u63a7\u4e0e\u52a8\u6001\u8c03\u4f18<\/h4>\n<p>\u751f\u4ea7\u73af\u5883\u4e2d&#xff0c;\u6211\u4eec\u9700\u8981\u65f6\u523b\u77e5\u9053\u8fde\u63a5\u6c60\u7684\u8d1f\u8f7d\u60c5\u51b5&#xff1a;<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">getPoolInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token keyword return-type\">array<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token variable\">$idleCount<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">pool<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">length<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token variable\">$activeCount<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">currentConnections<\/span> <span class=\"token operator\">&#8211;<\/span> <span class=\"token variable\">$idleCount<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n        <span class=\"token string single-quoted-string\">&#039;total_connections&#039;<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">currentConnections<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string single-quoted-string\">&#039;idle_connections&#039;<\/span>  <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token variable\">$idleCount<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string single-quoted-string\">&#039;active_connections&#039;<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token variable\">$activeCount<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string single-quoted-string\">&#039;max_connections&#039;<\/span>   <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">maxConnections<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string single-quoted-string\">&#039;queue_usage&#039;<\/span>       <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token function\">round<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$activeCount<\/span> <span class=\"token operator\">\/<\/span> <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">maxConnections<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">.<\/span> <span class=\"token string single-quoted-string\">&#039;%&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5b9a\u65f6\u76d1\u63a7<\/span><br \/>\n<span class=\"token function\">Coroutine<span class=\"token punctuation\">\\\\<\/span>run<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">function<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">use<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token variable\">$pool<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token constant boolean\">true<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name static-context\">Coroutine<\/span><span class=\"token operator\">::<\/span><span class=\"token function\">sleep<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token variable\">$info<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token variable\">$pool<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">getPoolInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">echo<\/span> <span class=\"token string double-quoted-string\">&#034;\u8fde\u63a5\u6c60\u72b6\u6001: &#034;<\/span> <span class=\"token operator\">.<\/span> <span class=\"token function\">json_encode<\/span><span class=\"token punctuation\">(<\/span><span class=\"token variable\">$info<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">.<\/span> <span class=\"token constant\">PHP_EOL<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token variable\">$info<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string single-quoted-string\">&#039;active_connections&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token variable\">$info<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string single-quoted-string\">&#039;max_connections&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">error_log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string double-quoted-string\">&#034;\u8b66\u544a&#xff1a;\u8fde\u63a5\u6c60\u5df2\u8017\u5c3d&#xff0c;\u8bf7\u6c42\u53ef\u80fd\u6b63\u5728\u6392\u961f\u7b49\u5f85&#xff01;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h3>5. \u5982\u679c\u4e0d\u7528 Swoole\/\u5e38\u9a7b\u5185\u5b58&#xff0c;\u8fd8\u6709\u5176\u4ed6\u65b9\u6848\u5417&#xff1f;<\/h3>\n<h4>5.1 \u6301\u4e45\u8fde\u63a5&#xff08;\u4f20\u7edf PHP-FPM \/ \u8fdb\u7a0b\u6a21\u5f0f&#xff09;<\/h4>\n<p><span class=\"token variable\">$pdo<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">PDO<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string single-quoted-string\">&#039;mysql:host&#061;&#8230;;dbname&#061;&#8230;&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string single-quoted-string\">&#039;user&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string single-quoted-string\">&#039;pass&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n    <span class=\"token class-name static-context\">PDO<\/span><span class=\"token operator\">::<\/span><span class=\"token constant\">ATTR_PERSISTENT<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token constant boolean\">true<\/span><span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<ul>\n<li>\u539f\u7406&#xff1a;\u6bcf\u4e2a\u5de5\u4f5c\u8fdb\u7a0b\u4f1a\u7f13\u5b58\u4e00\u4e2a\u8fde\u63a5\u5bf9\u8c61&#xff0c;\u8bf7\u6c42\u7ed3\u675f\u540e\u4e0d\u5173\u95ed&#xff0c;\u4f9b\u8be5\u8fdb\u7a0b\u7684\u4e0b\u4e00\u4e2a\u8bf7\u6c42\u590d\u7528\u3002<\/li>\n<li>\u5c40\u9650&#xff1a;\u65e0\u6cd5\u63a7\u5236\u603b\u8fde\u63a5\u6570&#xff08;\u6bcf\u4e2a\u8fdb\u7a0b\u4e00\u4e2a&#xff09;&#xff0c;\u5982\u679c\u8fdb\u7a0b\u6570\u5f88\u591a&#xff08;\u5982 100 \u4e2a&#xff09;&#xff0c;\u6570\u636e\u5e93\u8fde\u63a5\u6570\u4ecd\u7136\u5931\u63a7&#xff1b;\u4e14\u4e0d\u540c\u8fdb\u7a0b\u4e0d\u5171\u4eab\u8fde\u63a5\u3002<\/li>\n<\/ul>\n<h4>5.2 \u4ee3\u7406\u4e2d\u95f4\u4ef6&#xff08;\u5982 ProxySQL \/ PgBouncer&#xff09;<\/h4>\n<ul>\n<li>\u5e94\u7528\u76f4\u8fde ProxySQL&#xff08;\u672c\u5730\u6216\u8fdc\u7a0b&#xff09;&#xff0c;ProxySQL \u7ef4\u62a4\u5230\u771f\u5b9e\u6570\u636e\u5e93\u7684\u8fde\u63a5\u6c60\u3002<\/li>\n<li>\u4f18\u52bf&#xff1a;\u5bf9\u5e94\u7528\u900f\u660e&#xff0c;\u9002\u7528\u4e8e\u4efb\u4f55\u8bed\u8a00\u73af\u5883&#xff08;Java\u3001Python\u3001PHP \u90fd\u884c&#xff09;\u3002<\/li>\n<li>\u7f3a\u70b9&#xff1a;\u589e\u52a0\u4e00\u5c42\u7f51\u7edc\u5f00\u9500&#xff0c;\u9700\u8981\u989d\u5916\u8fd0\u7ef4\u3002<\/li>\n<\/ul>\n<h4>5.3 \u5355\u8fdb\u7a0b\u811a\u672c\u7684\u7b80\u6613\u6c60&#xff08;\u4ec5\u4f9b\u5b66\u4e60&#xff09;<\/h4>\n<p>\u9002\u7528\u4e8e CLI \u4efb\u52a1\u6216\u5355\u5143\u6d4b\u8bd5&#xff0c;\u4f46\u65e0\u6cd5\u8de8\u8bf7\u6c42\u5171\u4eab\u3002<\/p>\n<h4>5.4 \u4f20\u7edf\u8fdb\u7a0b\u6a21\u5f0f\u9879\u76ee\u7684\u5e94\u6025\u4f18\u5316\u65b9\u6848<\/h4>\n<p>\u5982\u679c\u4f60\u65e0\u6cd5\u5c06\u9879\u76ee\u8fc1\u79fb\u5230\u5e38\u9a7b\u5185\u5b58\u6a21\u5f0f&#xff0c;\u4f46\u9762\u4e34\u6570\u636e\u5e93\u8fde\u63a5\u6570\u8fc7\u9ad8\u7684\u95ee\u9898&#xff0c;\u53ef\u4ee5\u5c1d\u8bd5\u4ee5\u4e0b\u201c\u59a5\u534f\u201d\u65b9\u6848&#xff1a;<\/p>\n<li>\u964d\u4f4e\u5de5\u4f5c\u8fdb\u7a0b\u6570&#xff1a;\u5c06\u8fdb\u7a0b\u6570\u4ece 100 \u964d\u4f4e\u5230 30~50&#xff0c;\u727a\u7272\u5c11\u91cf\u5e76\u53d1\u80fd\u529b\u6362\u53d6\u6570\u636e\u5e93\u5b89\u5168\u3002<\/li>\n<li>\u5f00\u542f\u6301\u4e45\u8fde\u63a5 &#043; \u4e25\u683c\u63a7\u5236\u8fdb\u7a0b\u6570&#xff1a;\u8ba9\u6570\u636e\u5e93\u8fde\u63a5\u6570\u4e25\u683c\u7b49\u4e8e\u8fdb\u7a0b\u6570&#xff0c;\u4e0d\u518d\u968f\u8bf7\u6c42\u6570\u6ce2\u52a8\u3002<\/li>\n<li>\u8c03\u6574\u6570\u636e\u5e93\u8d85\u65f6&#xff1a;\u9002\u5f53\u964d\u4f4e wait_timeout \u548c interactive_timeout&#xff0c;\u8ba9\u6570\u636e\u5e93\u66f4\u5feb\u56de\u6536\u50f5\u6b7b\u8fde\u63a5\u3002<\/li>\n<li>\u5f15\u5165\u672c\u5730\u4ee3\u7406&#xff1a;\u90e8\u7f72 ProxySQL \u6216 PgBouncer&#xff0c;\u901a\u8fc7 Unix Socket \u8fde\u63a5&#xff0c;\u8fd9\u662f\u6700\u63a5\u8fd1\u201c\u771f\u8fde\u63a5\u6c60\u201d\u7684\u4f20\u7edf\u65b9\u6848\u3002<\/li>\n<hr \/>\n<h3>6. \u751f\u4ea7\u73af\u5883\u8fde\u63a5\u6c60\u7684\u8fdb\u9636\u8981\u70b9<\/h3>\n<table>\n<tr>\u5173\u6ce8\u70b9\u89e3\u51b3\u65b9\u6848<\/tr>\n<tbody>\n<tr>\n<td>\u8fde\u63a5\u8d85\u65f6<\/td>\n<td>\u8bbe\u7f6e pop() \u8d85\u65f6\u65f6\u95f4&#xff0c;\u907f\u514d\u5e94\u7528\u65e0\u9650\u7b49\u5f85\u5bfc\u81f4\u96ea\u5d29\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u8fde\u63a5\u5065\u5eb7\u68c0\u67e5<\/td>\n<td>\u5b9a\u671f\u6267\u884c SELECT 1 \u6216 PING&#xff0c;\u5931\u8d25\u5219\u91cd\u5efa\u8fde\u63a5\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u8fde\u63a5\u6cc4\u6f0f\u68c0\u6d4b<\/td>\n<td>\u8bb0\u5f55\u501f\u7528\u65f6\u95f4\u6233&#xff0c;\u82e5\u5f52\u8fd8\u8d85\u65f6\u5219\u5f3a\u5236\u56de\u6536\u5e76\u544a\u8b66\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u52a8\u6001\u6269\u7f29\u5bb9<\/td>\n<td>\u6839\u636e\u8d1f\u8f7d\u81ea\u52a8\u8c03\u6574\u8fde\u63a5\u6570&#xff08;\u4f46\u4e00\u822c\u56fa\u5b9a\u6700\u5927\u503c\u5373\u53ef&#xff09;\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u8bfb\u5199\u5206\u79bb<\/td>\n<td>\u7ef4\u62a4\u591a\u4e2a\u6c60&#xff08;\u4e3b\u5e93\u6c60\u3001\u4ece\u5e93\u6c60&#xff09;&#xff0c;\u8def\u7531\u4e0d\u540c SQL\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u8fde\u63a5\u91cd\u7f6e<\/td>\n<td>\u5f52\u8fd8\u524d\u6267\u884c rollBack \u5e76\u91cd\u7f6e\u5b57\u7b26\u96c6&#xff0c;\u786e\u4fdd\u8fde\u63a5\u6e05\u6d01\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h3>7. \u603b\u7ed3<\/h3>\n<ul>\n<li>\u8fde\u63a5\u6c60\u662f\u63d0\u5347\u6027\u80fd\u3001\u4fdd\u62a4\u540e\u7aef\u7684\u5173\u952e\u7ec4\u4ef6&#xff0c;\u5c24\u5176\u9002\u5408\u9ad8\u5e76\u53d1\u573a\u666f\u3002<\/li>\n<li>\u6838\u5fc3\u539f\u7406&#xff1a;\u7528\u961f\u5217&#xff08;\u5148\u8fdb\u5148\u51fa&#xff09;\u7ba1\u7406\u7a7a\u95f2\u8fde\u63a5&#xff0c;\u501f\u51fa\u65f6\u51fa\u961f&#xff0c;\u5f52\u8fd8\u65f6\u5165\u961f&#xff0c;\u6ee1\u989d\u65f6\u963b\u585e\u7b49\u5f85&#xff0c;\u5b9e\u73b0\u590d\u7528\u4e0e\u9650\u6d41\u3002<\/li>\n<li>\u957f\u8fde\u63a5\u672c\u8d28&#xff1a;\u8fde\u63a5\u6c60\u5fc5\u987b\u5efa\u7acb\u5728\u957f\u8fde\u63a5\u4e4b\u4e0a&#xff0c;\u4f46\u5b83\u533a\u522b\u4e8e\u201c\u8fdb\u7a0b\u7ea7\u6301\u4e45\u8fde\u63a5\u201d&#xff0c;\u5b83\u662f\u201c\u5e94\u7528\u7ea7\u5171\u4eab\u201d\u4e14\u5177\u5907\u603b\u91cf\u63a7\u5236\u548c\u96c6\u4e2d\u8c03\u5ea6\u80fd\u529b\u3002\u540c\u65f6\u5fc5\u987b\u914d\u5907\u5fc3\u8df3\u673a\u5236\u6765\u5e94\u5bf9\u7f51\u7edc\u8d85\u65f6\u3002<\/li>\n<li>\u957f\u8fde\u63a5\u91ca\u653e&#xff1a;\u7a0b\u5e8f\u5fc5\u987b\u4e3b\u52a8\u8c03\u7528 close() \u6765\u91ca\u653e\u957f\u8fde\u63a5&#xff0c;\u7edd\u4e0d\u80fd\u4f9d\u8d56\u6570\u636e\u5e93\u8d85\u65f6\u8e22\u6389\u6216\u8fdb\u7a0b\u5d29\u6e83\u56de\u6536\u3002\u89c4\u8303\u7684\u8fde\u63a5\u6c60\u5e94\u5728\u4f18\u96c5\u5173\u95ed\u3001\u8d85\u65f6\u6dd8\u6c70\u3001\u5065\u5eb7\u68c0\u67e5\u5931\u8d25\u4e09\u4e2a\u73af\u8282\u4e3b\u52a8\u91ca\u653e\u3002\u5982\u679c\u7a0b\u5e8f\u65e2\u4e0d\u4e3b\u52a8\u91ca\u653e\u4e5f\u4e0d\u53d1\u5fc3\u8df3&#xff0c;\u8fde\u63a5\u4f1a\u5728 15 \u5206\u949f\u5230 8 \u5c0f\u65f6\u5185\u88ab\u9632\u706b\u5899\u3001\u64cd\u4f5c\u7cfb\u7edf\u6216\u6570\u636e\u5e93\u9010\u5c42\u5f3a\u5236\u65ad\u5f00\u3002<\/li>\n<li>\u961f\u5217\u5b58\u50a8\u672c\u8d28&#xff1a;\u961f\u5217\u4e2d\u5b58\u653e\u7684\u662f\u8fde\u63a5\u5bf9\u8c61\u672c\u4f53&#xff0c;\u800c\u975e\u72b6\u6001\u6807\u8bb0&#xff1b;\u8fde\u63a5\u72b6\u6001\u901a\u8fc7\u201c\u662f\u5426\u5b58\u5728\u4e8e\u961f\u5217\u4e2d\u201d\u6765\u9690\u542b\u8868\u8fbe\u3002<\/li>\n<li>\u4e0d\u8981\u8fc7\u65e9\u4f18\u5316&#xff1a;\u5982\u679c\u4f60\u7684\u4e1a\u52a1 QPS \u4f4e\u4e8e 100&#xff0c;\u4e14\u6570\u636e\u5e93\u8fde\u63a5\u6570\u7a33\u5b9a&#xff0c;\u6301\u4e45\u8fde\u63a5\u6216\u7b80\u5355\u4ee3\u7406\u53ef\u80fd\u8db3\u591f\u3002\u4f46\u5f53\u4f60\u5f00\u59cb\u6536\u5230\u201cToo many connections\u201d\u9519\u8bef\u65f6&#xff0c;\u8fde\u63a5\u6c60\u5c31\u662f\u6551\u547d\u826f\u836f\u3002<\/li>\n<\/ul>\n<p>\u6280\u672f\u9009\u578b\u8981\u7ed3\u5408\u4f60\u7684\u5b9e\u9645\u90e8\u7f72\u67b6\u6784\u3002\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u5e2e\u4f60\u5f7b\u5e95\u641e\u61c2\u8fde\u63a5\u6c60&#xff0c;\u5199\u51fa\u66f4\u5065\u58ee\u7684\u5e94\u7528\u3002<\/p>\n<hr \/>\n<p>\u5ef6\u4f38\u9605\u8bfb<\/p>\n<ul>\n<li>Swoole \u5b98\u65b9\u6587\u6863&#xff1a;Database<\/li>\n<li>ProxySQL \u5b98\u65b9\u6587\u6863<\/li>\n<li>PDO \u6301\u4e45\u8fde\u63a5\u8be6\u89e3<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u5f551. \u4ec0\u4e48\u662f\u8fde\u63a5\u6c60&#xff1f;2. \u4e3a\u4ec0\u4e48\u5fc5\u987b\u7528\u8fde\u63a5\u6c60&#xff1f;2.1 \u8fde\u63a5\u7684\u5efa\u7acb\u6bd4\u4f60\u60f3\u7684\u8981\u6602\u8d352.2 \u4fdd\u62a4\u540e\u7aef\u8d44\u6e90\u4e0d\u88ab\u8017\u5c3d2.3 \u63d0\u5347\u54cd\u5e94\u901f\u5ea62.4 \u4fbf\u4e8e\u5065\u5eb7\u7ba1\u7406\u4e0e\u91cd\u8fde2.5 \u771f\u5b9e\u573a\u666f\u538b\u529b\u5bf9\u6bd4&#xff1a;\u6709\u6c60\u4e0e\u65e0\u6c60\u7684\u6781\u9650\u53cd\u5dee3. \u8fde\u63a5\u6c60\u7684\u6838\u5fc3\u5b9e\u73b0\u539f\u74063.1 \u4f20\u7edf\u6a21\u5f0f&#xff08;\u5982 PHP-FPM&#xff09;\u7684\u56f0\u58833.2 \u4e3a\u4ec0\u4e48\u9700\u8981\u201c\u5e38\u9a7b\u5185\u5b58\u201d\u73af\u5883&#xff1f;3.3 \u8fde\u63a5\u6c60\u4e0e\u957f\u8fde\u63a5\u7684\u8fa9\u8bc1\u5173\u7cfb&#xff08;\u4e00\u4e2a\u5fc5\u987b\u5398\u6e05\u7684\u8bef\u533a&#xff09;3.4<\/p>\n","protected":false},"author":2,"featured_media":95141,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[10908,10336,10907,2140,100,188],"topic":[],"class_list":["post-95142","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-pool","tag-10336","tag-10907","tag-swoole","tag-100","tag-188"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u6570\u636e\u5e93\u603b\u5728\u9ad8\u5cf0\u671f\u201c\u5012\u4e0b\u201d\uff1f\u4e00\u6587\u5f7b\u5e95\u641e\u61c2\u8fde\u63a5\u6c60\u7684\u539f\u7406\u3001\u5b9e\u6218\u4e0e\u9677\u9631 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" 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