{"id":34161,"date":"2026-10-30T18:00:00","date_gmt":"2026-10-30T10:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=34161"},"modified":"2026-10-24T15:59:00","modified_gmt":"2026-10-24T07:59:00","slug":"shared-hosting-database-optimization","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/shared-hosting-database-optimization\/","title":{"rendered":"\u865a\u62df\u4e3b\u673a\u6570\u636e\u5e93\u8fde\u63a5\u6570\u8d85\u9650\u6392\u67e5\uff1a\u6162\u67e5\u8be2\u4e0e\u8fde\u63a5\u6c60\u4f18\u5316"},"content":{"rendered":"<h2>[\u865a\u62df\u4e3b\u673a](https:\/\/cn.hostease.com\/shared-hosting.html)\u62a5\u201c\u8fde\u63a5\u6570\u8d85\u9650\u201d\uff0c\u5148\u5206\u6e05\u662f\u54ea\u4e00\u79cd\u8d85\u9650<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/shared-hosting-database-optimization-cover.webp\" alt=\"\u6570\u636e\u5e93\u8fde\u63a5\u6570\u8d85\u9650\u793a\u610f\u56fe\uff1a\u5927\u91cf\u8bf7\u6c42\u6324\u5411\u6709\u9650\u7684\u6570\u636e\u5e93\u8fde\u63a5\u901a\u9053\" title=\"\u865a\u62df\u4e3b\u673a\u6570\u636e\u5e93\u8fde\u63a5\u6570\u8d85\u9650\u5c01\u9762\u56fe\"><\/p>\n<p>\u672c\u7bc7\u6307\u5357\u6559\u4f60\u5982\u4f55\u7528\u9762\u677f\u548c SQL \u4e24\u7aef\u786e\u8ba4\u81ea\u5df1\u649e\u7684\u5230\u5e95\u662f\u54ea\u4e00\u9053\u5899\uff0c\u518d\u7528\u8fde\u63a5\u6c60\u53c2\u6570\u4e0e\u6162\u67e5\u8be2\u4f18\u5316\u628a\u5cf0\u503c\u8fde\u63a5\u6570\u538b\u56de\u53bb\uff0c\u6574\u4e2a\u8fc7\u7a0b\u4e0d\u9700\u8981\u91cd\u542f\u6570\u636e\u5e93\u3002\u7f51\u7ad9\u7a81\u7136\u5927\u9762\u79ef\u8fd4\u56de 500 \u65f6\uff0c\u65e5\u5fd7\u91cc\u901a\u5e38\u53ea\u6709\u4e24\u6761\u62a5\u9519\uff1a<code>Too many connections<\/code> \u8bf4\u660e\u6574\u53f0\u6570\u636e\u5e93\u670d\u52a1\u5668\u540c\u65f6\u63a5\u5165\u7684\u5ba2\u6237\u7aef\u603b\u6570\u88ab\u6253\u6ee1\uff0c<code>max_user_connections<\/code> \u76f8\u5173\u62a5\u9519\u5219\u8bf4\u660e\u4f60\u8fd9\u4e2a\u6570\u636e\u5e93\u8d26\u53f7\u7684\u5e76\u53d1\u8fde\u63a5\u6570\u5df2\u7ecf\u7528\u5b8c\u3002\u4e24\u8005\u6307\u5411\u5b8c\u5168\u4e0d\u540c\u7684\u4e0a\u9650\uff0c\u5904\u7406\u52a8\u4f5c\u4e5f\u5b8c\u5168\u4e0d\u540c\uff0c\u5f88\u591a\u7ad9\u957f\u7684\u7b2c\u4e00\u53cd\u5e94\u662f\u201c\u6570\u636e\u5e93\u574f\u4e86\u201d\u6216\u8005\u201c\u8be5\u5347\u7ea7\u5957\u9910\u4e86\u201d\uff0c\u7ed3\u679c\u5f80\u5f80\u6539\u9519\u4e86\u5730\u65b9\u3002<\/p>\n<p>\u5148\u7ea0\u6b63\u4e00\u4e2a\u51e0\u4e4e\u6240\u6709\u4eba\u90fd\u8e29\u8fc7\u7684\u8bef\u89e3\uff1a\u8fde\u63a5\u6570\u4e0a\u9650\u4e0d\u662f\u201c\u7f51\u7ad9\u80fd\u540c\u65f6\u63a5\u5f85\u591a\u5c11\u8bbf\u5ba2\u201d\uff0c\u800c\u662f\u201c\u540c\u4e00\u65f6\u523b\u6709\u591a\u5c11\u6761\u6570\u636e\u5e93\u4f1a\u8bdd\u5904\u4e8e\u6253\u5f00\u72b6\u6001\u201d\u3002\u4e00\u6761\u4f1a\u8bdd\u4ece\u5efa\u7acb\u5230\u5173\u95ed\u53ef\u80fd\u53ea\u6301\u7eed\u51e0\u6beb\u79d2\uff0c\u4e5f\u53ef\u80fd\u4ee5 <code>Sleep<\/code> \u72b6\u6001\u6302\u6ee1 8 \u5c0f\u65f6\u2014\u2014MySQL \u7684 <code>wait_timeout<\/code> \u9ed8\u8ba4\u503c\u662f 28800 \u79d2\u3002\u53ea\u76ef\u7740\u8bbf\u95ee\u91cf\u6570\u5b57\u770b\uff0c\u6c38\u8fdc\u89e3\u91ca\u4e0d\u4e86\u4e3a\u4ec0\u4e48\u65e5 IP \u4e24\u5343\u7684\u5c0f\u7ad9\u4e5f\u80fd\u628a\u8fde\u63a5\u6570\u6253\u6ee1\u3002\u60f3\u628a\u8fd9\u6761\u94fe\u8def\u5f7b\u5e95\u641e\u6e05\uff0c\u5efa\u8bae\u5148\u8865\u4e00\u4e0b <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/mysql-slow-log-locate-sql\/\" title=\"MySQL \u6162\u67e5\u8be2\u65e5\u5fd7\u5b9a\u4f4d\u95ee\u9898 SQL\">\u6162\u67e5\u8be2\u65e5\u5fd7\u7684\u5b9a\u4f4d\u65b9\u6cd5<\/a>\uff0c\u56e0\u4e3a\u8fde\u63a5\u88ab\u957f\u671f\u5360\u7528\u7684\u5934\u53f7\u539f\u56e0\uff0c\u5f80\u5f80\u5c31\u662f\u67d0\u6761\u62d6\u4e86\u51e0\u79d2\u7684 SQL\u3002<\/p>\n<h2>\u56db\u5c42\u4e0a\u9650\u4e32\u8054\uff1a\u522b\u628a\u670d\u52a1\u5668\u603b\u91cf\u548c\u8d26\u53f7\u914d\u989d\u6df7\u4e3a\u4e00\u8c08<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/shared-hosting-database-optimization-limits.webp\" alt=\"\u5bf9\u6bd4\u793a\u610f\u56fe\uff1a\u5bbd\u901a\u9053\u7684\u670d\u52a1\u5668\u5168\u5c40\u4e0a\u9650\u4e0e\u7a84\u95e8\u6846\u7684\u5355\u8d26\u53f7\u914d\u989d\" title=\"\u670d\u52a1\u5668\u5168\u5c40\u8fde\u63a5\u4e0a\u9650\u4e0e\u8d26\u53f7\u914d\u989d\u5bf9\u6bd4\"><\/p>\n<p>\u6392\u67e5\u4e4b\u524d\u5fc5\u987b\u5148\u628a\u56db\u5c42\u9650\u5236\u62c6\u5f00\uff0c\u56e0\u4e3a\u5b83\u4eec\u5f52\u5c5e\u4e0d\u540c\u7684\u7ba1\u7406\u8005\uff0c\u80fd\u6539\u7684\u6743\u9650\u4e5f\u5b8c\u5168\u4e0d\u540c\u3002<\/p>\n<ul>\n<li><strong>max_connections<\/strong>\uff1a\u6570\u636e\u5e93\u670d\u52a1\u5668\u5168\u5c40\u5141\u8bb8\u7684\u6700\u5927\u5e76\u53d1\u4f1a\u8bdd\u6570\uff0cMySQL 8.0 \u9ed8\u8ba4 151\u3002\u5171\u4eab\u73af\u5883\u7684\u7528\u6237\u65e0\u6743\u4fee\u6539\u8fd9\u4e00\u9879\uff0c\u770b\u5230 1040 \u62a5\u9519\u8bf4\u660e\u6574\u53f0\u673a\u5668\u88ab\u6253\u6ee1\uff0c\u53ea\u80fd\u51cf\u5c11\u81ea\u8eab\u5360\u7528\u6216\u8054\u7cfb\u4e3b\u673a\u5546\u6838\u67e5\u3002<\/li>\n<li><strong>max_user_connections<\/strong>\uff1a\u5355\u4e2a\u6570\u636e\u5e93\u8d26\u53f7\u7684\u5e76\u53d1\u4e0a\u9650\uff0c\u865a\u62df\u4e3b\u673a\u901a\u5e38\u8bbe\u5728 10 \u5230 30 \u4e4b\u95f4\u3002\u62a5\u9519 1226 \u5c31\u662f\u649e\u4e86\u8fd9\u4e00\u5c42\uff0c\u95ee\u9898\u57fa\u672c\u90fd\u51fa\u5728\u81ea\u5df1\u7ad9\u70b9\u7684\u8fde\u63a5\u6cc4\u6f0f\u6216\u77ac\u65f6\u5e76\u53d1\u3002<\/li>\n<li><strong>PHP \u8fdb\u7a0b\u6570<\/strong>\uff1a\u6bcf\u4e2a PHP-FPM \u5b50\u8fdb\u7a0b\u5728\u540c\u4e00\u65f6\u523b\u6700\u591a\u6301\u6709\u4e00\u6761\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u6240\u4ee5 <code>pm.max_children<\/code> \u5b9e\u9645\u4e0a\u51b3\u5b9a\u4e86\u8fde\u63a5\u6570\u7684\u7406\u8bba\u4e0a\u9650\uff0c50 \u4e2a\u5b50\u8fdb\u7a0b\u5c31\u662f 50 \u6761\u6f5c\u5728\u8fde\u63a5\u3002<\/li>\n<li><strong>\u5e94\u7528\u8fde\u63a5\u6c60<\/strong>\uff1a\u7a0b\u5e8f\u4fa7\u590d\u7528\u8fde\u63a5\u7684\u5bb9\u5668\u3002\u6c60\u5b50\u4e0a\u9650\u5f00\u5f97\u6bd4\u6570\u636e\u5e93\u914d\u989d\u8fd8\u5927\uff0c\u7b49\u4e8e\u628a\u6392\u961f\u538b\u529b\u4ece\u6570\u636e\u5e93\u642c\u5230\u4e86\u62a5\u9519\u65e5\u5fd7\u91cc\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u56db\u5c42\u662f\u4e32\u8054\u5173\u7cfb\uff0c\u5b9e\u9645\u53ef\u7528\u503c\u7531\u6700\u7a84\u7684\u90a3\u4e00\u5c42\u51b3\u5b9a\u3002\u5047\u8bbe\u8d26\u53f7\u914d\u989d\u662f 20\u3001PHP \u5b50\u8fdb\u7a0b\u914d\u4e86 50\uff0c\u90a3\u4e48\u7b2c 21 \u4e2a\u5e76\u53d1\u8bf7\u6c42\u7acb\u523b\u5f00\u59cb\u62a5\u9519\uff0c\u5269\u4e0b\u7684 30 \u4e2a\u8fdb\u7a0b\u53ea\u662f\u5728\u6392\u961f\u5236\u9020\u5f02\u5e38\uff1b\u53cd\u8fc7\u6765\uff0c\u5982\u679c <code>pm.max_children<\/code> \u53ea\u6709 5\uff0c\u5373\u4fbf\u8d26\u53f7\u914d\u989d\u7ed9\u5230 30\uff0c\u4f60\u7684\u7ad9\u70b9\u4e5f\u53ea\u80fd\u540c\u65f6\u5904\u7406 5 \u4e2a\u52a8\u6001\u8bf7\u6c42\u3002\u6728\u6876\u6700\u77ed\u7684\u90a3\u5757\u677f\u5728\u54ea\u91cc\uff0c\u51b3\u5b9a\u4e86\u4f60\u8be5\u5148\u52a8\u54ea\u4e00\u4e2a\u53c2\u6570\uff0c\u6240\u4ee5\u4e0b\u9762\u5148\u505a\u5b9a\u4f4d\uff0c\u518d\u8c08\u8c03\u53c2\u3002<\/p>\n<h2>\u4e09\u7ec4\u547d\u4ee4\u5b9a\u4f4d\uff1a\u8c01\u5728\u5360\u7740\u8fde\u63a5\u4e0d\u653e<\/h2>\n<p>\u786e\u8ba4\u649e\u7684\u662f\u8d26\u53f7\u5c42\u4e0a\u9650\u4e4b\u540e\uff0c\u4e0b\u4e00\u6b65\u662f\u627e\u51fa\u5360\u7528\u8005\u3002\u865a\u62df\u4e3b\u673a\u4e00\u822c\u53ea\u63d0\u4f9b phpMyAdmin\uff0c\u90a3\u5c31\u76f4\u63a5\u5728 SQL \u7a97\u53e3\u4f9d\u6b21\u6267\u884c\u4e0b\u9762\u4e09\u6761\u67e5\u8be2\uff0c\u524d\u4e24\u6761\u770b\u6c34\u4f4d\uff0c\u7b2c\u4e09\u6761\u770b\u4e2a\u4f53\u3002<\/p>\n<ul>\n<li><code>SHOW STATUS LIKE 'Threads_connected';<\/code> \u2014\u2014 \u5f53\u524d\u6253\u5f00\u7684\u4f1a\u8bdd\u603b\u6570\uff0c\u8fde\u7eed\u91c7\u6837\u51e0\u6b21\u5c31\u80fd\u770b\u51fa\u5b83\u662f\u5426\u53ea\u6da8\u4e0d\u843d\u3002<\/li>\n<li><code>SHOW STATUS LIKE 'Max_used_connections';<\/code> \u2014\u2014 \u6570\u636e\u5e93\u542f\u52a8\u4ee5\u6765\u7684\u5cf0\u503c\u8fde\u63a5\u6570\uff0c\u9664\u4ee5\u8d26\u53f7\u914d\u989d\u8d85\u8fc7 80%\uff0c\u8bf4\u660e\u914d\u989d\u957f\u671f\u504f\u7d27\u3002<\/li>\n<li><code>SELECT ID, USER, HOST, TIME, STATE, LEFT(INFO,60) FROM information_schema.processlist WHERE COMMAND='Sleep' ORDER BY TIME DESC LIMIT 10;<\/code> \u2014\u2014 \u5217\u51fa\u6302\u8d77\u6700\u4e45\u7684\u7a7a\u95f2\u8fde\u63a5\uff0cTIME \u5355\u4f4d\u662f\u79d2\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/shared-hosting-database-optimization-architecture.webp\" alt=\"\u67b6\u6784\u793a\u610f\u56fe\uff1a\u7f51\u7ad9\u8fdb\u7a0b\u7ecf\u8fde\u63a5\u6c60\u8f6c\u53d1\u5230\u6570\u636e\u5e93\u7684\u5c42\u7ea7\u5173\u7cfb\" title=\"\u8fde\u63a5\u6c60\u4e0e\u6570\u636e\u5e93\u7684\u5c42\u7ea7\u67b6\u6784\"><\/p>\n<p>\u4e09\u6761\u67e5\u8be2\u7684\u7ed3\u679c\u7ec4\u5408\u8d77\u6765\uff0c\u57fa\u672c\u80fd\u9501\u5b9a\u95ee\u9898\u7c7b\u578b\u3002\u5982\u679c <code>Sleep<\/code> \u8fde\u63a5\u6570\u91cf\u591a\u3001TIME \u52a8\u8f84\u51e0\u767e\u79d2\uff0c\u8bf4\u660e\u7a0b\u5e8f\u6253\u5f00\u8fde\u63a5\u540e\u6ca1\u6709\u5f52\u8fd8\uff0c\u5178\u578b\u6765\u6e90\u662f\u6301\u4e45\u8fde\u63a5\u7684\u7a7a\u95f2\u8d85\u65f6\u8bbe\u5f97\u6bd4\u670d\u52a1\u5668 <code>wait_timeout<\/code> \u66f4\u957f\uff0c\u8fde\u63a5\u88ab\u670d\u52a1\u7aef\u5355\u65b9\u9762\u65ad\u5f00\u800c\u5ba2\u6237\u7aef\u6c60\u5b50\u91cc\u8fd8\u7559\u7740\u8bb0\u5f55\u3002\u5982\u679c Sleep \u5f88\u5c11\u4f46 <code>Threads_running<\/code> \u6301\u7eed\u504f\u9ad8\uff0c\u90a3\u8fde\u63a5\u6570\u53ea\u662f\u8868\u8c61\uff0c\u771f\u51f6\u662f\u6267\u884c\u6162\u7684\u67e5\u8be2\u5728\u5360\u5751\u3002\u81f3\u4e8e <code>Aborted_connects<\/code> \u6301\u7eed\u589e\u957f\uff0c\u901a\u5e38\u610f\u5473\u7740\u63e1\u624b\u5931\u8d25\u6216\u5bc6\u7801\u9519\u8bef\u88ab\u53cd\u590d\u91cd\u8bd5\uff0c\u4e0e\u6027\u80fd\u65e0\u5173\uff0c\u5148\u6392\u67e5\u914d\u7f6e\u548c\u51ed\u636e\u3002\u8fd9\u4e09\u79cd\u60c5\u51b5\u5bf9\u5e94\u4e09\u5957\u4fee\u6cd5\uff0c\u6df7\u7740\u6539\u53ea\u4f1a\u8ba9\u95ee\u9898\u66f4\u96be\u5b9a\u4f4d\u3002<\/p>\n<h2>\u6162\u67e5\u8be2\u5982\u4f55\u628a\u8fde\u63a5\u6570\u653e\u5927\u5341\u500d<\/h2>\n<p>\u7528\u4e00\u4e2a\u521d\u4e2d\u7b97\u672f\u5c31\u80fd\u8bf4\u660e\u8fde\u63a5\u6570\u4e3a\u4ec0\u4e48\u4f1a\u88ab\u6162\u67e5\u8be2\u6491\u7206\uff1a\u7a33\u6001\u5e76\u53d1\u8fde\u63a5\u6570\u7ea6\u7b49\u4e8e\u6bcf\u79d2\u67e5\u8be2\u6570\u4e58\u4ee5\u5355\u6761\u67e5\u8be2\u7684\u5e73\u5747\u8017\u65f6\u3002\u67d0\u7ad9\u9ad8\u5cf0\u671f 150 QPS\u3001\u5355\u6761\u67e5\u8be2\u5e73\u5747 40 \u6beb\u79d2\uff0c\u53ea\u9700\u8981 6 \u6761\u8fde\u63a5\u5c31\u80fd\u8f7b\u677e\u8dd1\u5b8c\uff1b\u4e00\u65e6\u67d0\u6761 SQL \u56e0\u4e3a\u7f3a\u7d22\u5f15\u4ece 40 \u6beb\u79d2\u9000\u5316\u5230 1.2 \u79d2\uff0c\u540c\u6837\u7684\u6d41\u91cf\u7acb\u523b\u9700\u8981 180 \u6761\u8fde\u63a5\uff0c\u914d\u989d 20 \u7684\u73af\u5883\u5728\u51e0\u79d2\u5185\u5c31\u4f1a\u5168\u7ebf\u62a5\u9519\u3002\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u201c\u8fde\u63a5\u6570\u8d85\u9650\u201d\u548c\u201c\u6162\u67e5\u8be2\u201d\u51e0\u4e4e\u603b\u662f\u540c\u65f6\u51fa\u73b0\uff0c\u800c\u5148\u770b\u8fde\u63a5\u6c34\u4f4d\u3001\u518d\u770b\u6162\u65e5\u5fd7\u7684\u987a\u5e8f\u4e0d\u80fd\u98a0\u5012\u3002<\/p>\n<p>\u5b9a\u4f4d\u6162 SQL \u7684\u52a8\u4f5c\u5e76\u4e0d\u590d\u6742\uff1a\u628a <code>long_query_time<\/code> \u4ece 1 \u79d2\u8d77\u6b65\uff0c\u7528 <code>EXPLAIN<\/code> \u67e5\u770b\u6267\u884c\u8ba1\u5212\u91cc type \u662f\u5426\u4e3a ALL\uff0c\u91cd\u70b9\u5904\u7406\u626b\u63cf\u884c\u6570\u8fdc\u5927\u4e8e\u8fd4\u56de\u884c\u6570\u7684\u8bed\u53e5\u3002\u5982\u679c\u95ee\u9898\u96c6\u4e2d\u5728\u8868\u635f\u574f\u3001\u5197\u4f59\u6570\u636e\u6216\u63d2\u4ef6\u7559\u4e0b\u7684\u7edf\u8ba1\u8868\u4e0a\uff0c\u5148\u505a\u4fee\u590d\u4e0e\u6e05\u7406\uff0c\u6548\u679c\u5e38\u5e38\u6bd4\u6269\u8fde\u63a5\u66f4\u76f4\u63a5\uff0c\u5177\u4f53\u547d\u4ee4\u53ef\u4ee5\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/wordpress-db-repair-wp-cli\/\" title=\"WordPress \u6570\u636e\u5e93\u4fee\u590d\u4e0e\u4f18\u5316\u5b9e\u64cd\">WordPress \u6570\u636e\u5e93\u4fee\u590d\u4e0e\u4f18\u5316<\/a>\u4e2d\u7684 WP-CLI \u4e0e phpMyAdmin \u6b65\u9aa4\u3002\u8fd8\u8981\u7559\u610f\u957f\u4e8b\u52a1\u548c MyISAM \u8868\u9501\uff1a\u4e00\u6761\u672a\u63d0\u4ea4\u7684\u4e8b\u52a1\u4f1a\u4e00\u76f4\u5360\u7740\u8fde\u63a5\uff0c\u9501\u7b49\u5f85\u5219\u4f1a\u628a\u66f4\u591a\u8bf7\u6c42\u5835\u5728\u540e\u9762\uff0c\u5f62\u6210\u8fde\u63a5\u6570\u96ea\u5d29\u3002<\/p>\n<h2>\u8fde\u63a5\u6c60\u600e\u4e48\u8c03\uff1a\u56db\u4e2a\u53c2\u6570\u51b3\u5b9a\u6210\u8d25<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/shared-hosting-database-optimization-pool.webp\" alt=\"\u793a\u610f\u56fe\uff1a\u8fde\u63a5\u88ab\u5faa\u73af\u590d\u7528\u56de\u8fde\u63a5\u6c60\u7684\u95ed\u73af\u8def\u5f84\" title=\"\u8fde\u63a5\u6c60\u590d\u7528\u8fde\u63a5\u7684\u95ed\u73af\u793a\u610f\"><\/p>\n<p>\u628a\u6162\u67e5\u8be2\u5904\u7406\u6389\u4e4b\u540e\uff0c\u5269\u4e0b\u7684\u5de5\u4f5c\u662f\u628a\u8fde\u63a5\u6570\u7a33\u7a33\u538b\u5728\u914d\u989d\u4ee5\u4e0b\u3002\u8fde\u63a5\u6c60\u7684\u4f5c\u7528\u662f\u590d\u7528\u800c\u4e0d\u662f\u6269\u5bb9\uff0c\u4e0b\u9762\u56db\u4e2a\u53c2\u6570\u51b3\u5b9a\u4e86\u5b83\u5230\u5e95\u662f\u5e2e\u5fd9\u8fd8\u662f\u6dfb\u4e71\u3002<\/p>\n<ul>\n<li><strong>\u6c60\u5b50\u4e0a\u9650\u53d6\u914d\u989d\u7684\u4e03\u6210<\/strong>\uff1a\u8d26\u53f7\u914d\u989d 20 \u65f6\u628a\u6c60\u5b50\u5f00\u5230 12 \u5230 14\uff0c\u5269\u4e0b\u7684\u4f59\u91cf\u7559\u7ed9\u5907\u4efd\u3001\u9762\u677f\u64cd\u4f5c\u548c\u5b9a\u65f6\u4efb\u52a1\uff0c\u907f\u514d\u540e\u53f0\u8dd1\u4e00\u6b21\u5bfc\u51fa\u5c31\u628a\u524d\u53f0\u6324\u6b7b\u3002<\/li>\n<li><strong>\u7a7a\u95f2\u56de\u6536\u5fc5\u987b\u77ed\u4e8e wait_timeout<\/strong>\uff1a\u670d\u52a1\u5668\u9ed8\u8ba4 28800 \u79d2\u610f\u5473\u7740\u50f5\u6b7b\u8fde\u63a5\u80fd\u6302 8 \u5c0f\u65f6\uff0c\u628a\u6c60\u7684\u7a7a\u95f2\u8d85\u65f6\u8bbe\u6210 60 \u5230 120 \u79d2\uff0c\u5e76\u5728\u53d6\u51fa\u8fde\u63a5\u65f6\u505a\u4e00\u6b21\u63a2\u6d3b\uff0c\u53ef\u4ee5\u907f\u5f00 MySQL server has gone away \u8fd9\u7c7b\u62a5\u9519\u3002<\/li>\n<li><strong>PHP \u4fa7\u5f00\u542f\u8fdb\u7a0b\u5185\u590d\u7528<\/strong>\uff1amysqli \u5728\u4e3b\u673a\u540d\u524d\u52a0 <code>p:<\/code> \u524d\u7f00\uff08\u5982 <code>p:localhost<\/code>\uff09\uff0c\u6216 PDO \u8bbe\u7f6e <code>PDO::ATTR_PERSISTENT =&gt; true<\/code>\uff0c\u4e24\u8005\u90fd\u4f1a\u590d\u7528\u540c\u4e00\u8fdb\u7a0b\u5185\u7684\u8fde\u63a5\uff0c\u7701\u6389\u6bcf\u6b21\u8bf7\u6c42\u7684\u63e1\u624b\u5f00\u9500\u3002<\/li>\n<li><strong>\u540c\u6b65\u4e0b\u8c03 PHP \u5b50\u8fdb\u7a0b<\/strong>\uff1a<code>pm.max_children<\/code> \u4e0e\u6c60\u4e0a\u9650\u4e4b\u548c\u4e0d\u5e94\u8d85\u8fc7\u8d26\u53f7\u914d\u989d\uff0c\u591a\u51fa\u6765\u7684\u8fdb\u7a0b\u53ea\u4f1a\u6392\u961f\u5236\u9020 1226 \u62a5\u9519\u3002<\/li>\n<\/ul>\n<p>\u5f00\u542f\u6301\u4e45\u8fde\u63a5\u524d\u8981\u6e05\u695a\u5b83\u7684\u526f\u4f5c\u7528\uff1a\u8fde\u63a5\u5728\u8fdb\u7a0b\u7ea7\u88ab\u590d\u7528\uff0c\u4e0a\u4e00\u6b21\u8bf7\u6c42\u672a\u63d0\u4ea4\u7684\u4e8b\u52a1\u3001\u672a\u91cd\u7f6e\u7684\u4f1a\u8bdd\u53d8\u91cf\u4f1a\u5e26\u5230\u4e0b\u4e00\u6b21\u8bf7\u6c42\u3002\u4f9d\u8d56 <code>SET<\/code> \u4fee\u6539\u4f1a\u8bdd\u53c2\u6570\u7684\u63d2\u4ef6\uff0c\u5fc5\u987b\u5728\u5f52\u8fd8\u8fde\u63a5\u524d\u663e\u5f0f\u590d\u4f4d\uff0c\u5426\u5219\u4f1a\u51fa\u73b0\u201c\u67d0\u4e2a\u7528\u6237\u7684\u8bbe\u7f6e\u4e32\u5230\u522b\u4eba\u9875\u9762\u4e0a\u201d\u7684\u8be1\u5f02\u95ee\u9898\u3002\u5171\u4eab\u73af\u5883\u91cc\u66f4\u7a33\u59a5\u7684\u8def\u5f84\u662f\u964d\u4f4e\u6570\u636e\u5e93\u8bbf\u95ee\u9891\u6b21\u2014\u2014\u9875\u9762\u7f13\u5b58\u548c\u5bf9\u8c61\u7f13\u5b58\u628a QPS \u76f4\u63a5\u780d\u6389\u4e00\u4e2a\u6570\u91cf\u7ea7\uff0c\u6bd4\u5728\u8fde\u63a5\u6570\u4e0a\u62a0\u7ec6\u8282\u6536\u76ca\u5927\u5f97\u591a\u3002<\/p>\n<p>Hostease \u7684\u865a\u62df\u4e3b\u673a\u9762\u677f\u5728\u6570\u636e\u5e93\u7ba1\u7406\u9875\u4f1a\u663e\u793a\u5f53\u524d\u8fde\u63a5\u6570\u4e0e\u8d26\u53f7\u914d\u989d\uff0c\u8c03\u53c2\u4e4b\u524d\u5148\u5728\u90a3\u91cc\u6838\u5bf9\u771f\u5b9e\u4e0a\u9650\uff0c\u522b\u6309\u7f51\u4e0a\u7684\u9ed8\u8ba4\u503c\u76f2\u8c03\u3002\u5f53\u8fde\u63a5\u6c34\u4f4d\u957f\u671f\u8d34\u7740\u914d\u989d\u3001\u6162\u67e5\u8be2\u5df2\u7ecf\u6e05\u7406\u5e72\u51c0\u3001\u7f13\u5b58\u4e5f\u4e0a\u4e86\uff0c\u4ecd\u7136\u5728\u9ad8\u5cf0\u671f\u62a5\u9519\uff0c\u8bf4\u660e\u74f6\u9888\u662f\u5171\u4eab\u8d44\u6e90\u672c\u8eab\uff0c\u8fd9\u65f6\u5019\u8be5\u8003\u8651\u628a\u7ad9\u70b9\u642c\u5230\u72ec\u4eab\u8d44\u6e90\u7684\u73af\u5883\uff0c\u8fc1\u79fb\u6b65\u9aa4\u53ef\u4ee5\u53c2\u8003<a href=\"https:\/\/cn.hostease.com\/blog\/tutorials\/shared-hosting-migration-cloud-server\/\" title=\"\u865a\u62df\u4e3b\u673a\u8fc1\u79fb\u5230\u4e91\u670d\u52a1\u5668\u7684\u64cd\u4f5c\u6e05\u5355\">\u4ece\u865a\u62df\u4e3b\u673a\u8fc1\u79fb\u5230\u4e91\u670d\u52a1\u5668\uff08\u6309\u9700\u5206\u914d\u8ba1\u7b97\u8d44\u6e90\u7684\u4e91\u7aef\u4e3b\u673a\uff09<\/a>\uff0c\u9009\u578b\u601d\u8def\u4e0a<a href=\"https:\/\/cn.hostease.com\/blog\/guides\/shared-hosting-vps-dedicated-server\/\" title=\"\u5171\u4eab\u4e3b\u673a\u3001VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09\u4e0e\u72ec\u7acb\u670d\u52a1\u5668\u600e\u4e48\u9009\">\u5171\u4eab\u4e3b\u673a\u4e0e\u72ec\u4eab\u65b9\u6848\u7684\u51b3\u7b56\u65b9\u6cd5<\/a>\u7ed9\u51fa\u4e86\u6309\u6d41\u91cf\u548c\u6280\u672f\u80fd\u529b\u5339\u914d\u7684\u5224\u65ad\u6846\u67b6\u3002<\/p>\n<h2>\u603b\u7ed3\u4e0e\u884c\u52a8\u5efa\u8bae<\/h2>\n<p>\u56de\u987e\u6574\u6761\u6392\u67e5\u94fe\u8def\uff1a\u5148\u7528 <code>Threads_connected<\/code> \u4e0e <code>Max_used_connections<\/code> \u786e\u8ba4\u6c34\u4f4d\uff0c\u518d\u7528 information_schema \u627e\u51fa\u957f\u65f6\u95f4 <code>Sleep<\/code> \u7684\u8fde\u63a5\uff0c\u533a\u5206\u662f\u8fde\u63a5\u6cc4\u6f0f\u8fd8\u662f\u6162\u67e5\u8be2\u5360\u5751\uff1b\u6162\u67e5\u8be2\u6309\u201c\u5f00\u65e5\u5fd7 \u2192 EXPLAIN \u2192 \u52a0\u7d22\u5f15\u6216\u6539\u5199\u201d\u7684\u95ed\u73af\u5904\u7406\uff0c\u8fde\u63a5\u6c60\u5219\u628a\u4e0a\u9650\u538b\u5230\u914d\u989d\u7684\u4e03\u6210\u3001\u7a7a\u95f2\u56de\u6536\u8bbe\u5230 120 \u79d2\u4ee5\u5185\uff0c\u5e76\u8ba9 PHP \u5b50\u8fdb\u7a0b\u6570\u4e0e\u6c60\u4e0a\u9650\u4e4b\u548c\u4e0d\u8d85\u8fc7\u914d\u989d\u3002\u56db\u6b65\u505a\u5b8c\uff0c\u7edd\u5927\u591a\u6570\u201c\u8fde\u63a5\u6570\u8d85\u9650\u201d\u90fd\u4f1a\u4ece\u6bcf\u5929\u62a5\u9519\u53d8\u6210\u5076\u53d1\u544a\u8b66\u3002<\/p>\n<p>\u5efa\u8bae\u628a\u5b83\u505a\u6210\u6708\u5ea6\u4f8b\u884c\u68c0\u67e5\uff1a\u6708\u521d\u91c7\u6837\u4e00\u6b21\u5cf0\u503c\u8fde\u63a5\u6570\uff0c\u5bf9\u6bd4\u4e0a\u6708\u7684\u6162\u67e5\u8be2\u6e05\u5355\u662f\u5426\u6536\u655b\uff0c\u987a\u624b\u786e\u8ba4\u7a7a\u95f2\u8fde\u63a5\u7684\u6700\u957f\u5b58\u6d3b\u65f6\u95f4\u6709\u6ca1\u6709\u5f02\u5e38\u589e\u957f\u3002\u5982\u679c\u4f60\u9700\u8981\u957f\u671f\u89c2\u5bdf\u6c34\u4f4d\uff0c\u53ef\u4ee5\u8003\u8651\u5728\u76d1\u63a7\u91cc\u52a0\u4e00\u6761 <code>Threads_connected<\/code> \u66f2\u7ebf\uff0c\u8d85\u8fc7\u914d\u989d 70% \u5c31\u63d0\u524d\u9884\u8b66\uff0c\u6bd4\u7b49\u7528\u6237\u62a5 500 \u66f4\u5212\u7b97\u3002\u865a\u62df\u4e3b\u673a\u5957\u9910\u7684\u6570\u636e\u5e93\u8fde\u63a5\u914d\u989d\u4e0e\u8d44\u6e90\u89c4\u683c\u53ef\u4ee5\u5728<a href=\"https:\/\/cn.hostease.com\/shared-hosting.html\" title=\"Hostease \u865a\u62df\u4e3b\u673a\u4ea7\u54c1\u4e0e\u914d\u7f6e\">\u865a\u62df\u4e3b\u673a\u4ea7\u54c1\u9875<\/a>\u6838\u5bf9\uff0c\u5347\u7ea7\u524d\u5148\u786e\u8ba4\u73b0\u6709\u8fde\u63a5\u662f\u5426\u771f\u7684\u7528\u6ee1\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u865a\u62df\u4e3b\u673a\u62a5 Too many connections \u8be5\u4ece\u54ea\u67e5\uff1f\u672c\u6587\u5206\u6e05 max_connections \u4e0e max_user_connections \u7684\u533a\u522b\uff0c\u7528 SHOW PROCESSLIST \u627e\u51fa\u957f\u65f6\u95f4 Sleep \u7684\u8fde\u63a5\uff0c\u518d\u7528\u6c60\u53c2\u6570\u548c\u6162\u67e5\u8be2\u4f18\u5316\u628a\u5cf0\u503c\u8fde\u63a5\u6570\u538b\u56de\u53bb\uff0c\u9644\u53ef\u590d\u5236\u7684\u9a8c\u8bc1\u547d\u4ee4\u3002<\/p>\n","protected":false},"author":2,"featured_media":34157,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3822],"tags":[5437,545,5436,5375,5438],"class_list":["post-34161","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","tag-maxuserconnections","tag-mysql","tag-5436","tag-5375","tag-5438"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/shared-hosting-database-optimization-cover.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/34161","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=34161"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/34161\/revisions"}],"predecessor-version":[{"id":34162,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/34161\/revisions\/34162"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/34157"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=34161"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=34161"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=34161"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}