{"id":210596,"date":"2026-01-06T21:45:56","date_gmt":"2026-01-06T13:45:56","guid":{"rendered":"https:\/\/www.server.hk\/blog\/?p=210596"},"modified":"2025-12-31T21:47:00","modified_gmt":"2025-12-31T13:47:00","slug":"%e9%a6%99%e6%b8%af%e6%9c%8d%e5%8a%a1%e5%99%a8mysql%e4%bc%98%e5%8c%96%e6%8a%80%e5%b7%a7%ef%bc%9a%e6%8f%90%e5%8d%87%e6%95%b0%e6%8d%ae%e5%ba%93%e6%80%a7%e8%83%bd%e7%9a%84%e5%85%a8%e9%9d%a2%e6%8c%87","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/210596\/","title":{"rendered":"\u9999\u6e2f\u670d\u52a1\u5668MySQL\u4f18\u5316\u6280\u5de7\uff1a\u63d0\u5347\u6570\u636e\u5e93\u6027\u80fd\u7684\u5168\u9762\u6307\u5357"},"content":{"rendered":"<p dir=\"auto\">\u5728\u90e8\u7f72\u7f51\u7ad9\u3001\u7535\u5546\u5e73\u53f0\u6216\u4f01\u4e1a\u5e94\u7528\u65f6\uff0cMySQL\u6570\u636e\u5e93\u7684\u6027\u80fd\u76f4\u63a5\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u548c\u4e1a\u52a1\u6548\u7387\u3002\u7279\u522b\u662f\u5728\u9999\u6e2f\u670d\u52a1\u5668\u73af\u5883\u4e0b\uff0c\u7531\u4e8e\u5176\u72ec\u7279\u7684\u8de8\u5883\u7f51\u7edc\u7279\u6027\u3001\u4f4e\u5ef6\u8fdf\u4f18\u52bf\u4ee5\u53ca\u9ad8\u5e76\u53d1\u8bbf\u95ee\u9700\u6c42\uff0c\u5408\u7406\u7684MySQL\u4f18\u5316\u80fd\u663e\u8457\u63d0\u5347\u67e5\u8be2\u901f\u5ea6\u3001\u964d\u4f4e\u8d44\u6e90\u6d88\u8017\uff0c\u5e76\u786e\u4fdd\u7cfb\u7edf\u7a33\u5b9a\u8fd0\u884c\u3002\u672c\u6587\u5c06\u4ece\u914d\u7f6e\u8c03\u4f18\u3001\u7d22\u5f15\u8bbe\u8ba1\u3001\u67e5\u8be2\u4f18\u5316\u3001\u7f13\u5b58\u7b56\u7565\u7b49\u65b9\u9762\uff0c\u8be6\u7ec6\u79d1\u666e\u9999\u6e2f\u670d\u52a1\u5668MySQL\u4f18\u5316\u6280\u5de7\uff0c\u5e2e\u52a9\u7ad9\u957f\u548c\u5f00\u53d1\u8005\u5145\u5206\u53d1\u6325\u670d\u52a1\u5668\u6f5c\u529b\u3002<\/p>\n<h3 dir=\"auto\">\u9999\u6e2f\u670d\u52a1\u5668\u73af\u5883\u4e0b\u7684MySQL\u6027\u80fd\u7279\u70b9<\/h3>\n<p dir=\"auto\">\u9999\u6e2f\u670d\u52a1\u5668\u4ee5CN2 GIA\u6216BGP\u7ebf\u8def\u8457\u79f0\uff0c\u5230\u5927\u9646\u5ef6\u8fdf\u4f4e\u81f310-50ms\uff0c\u9002\u5408\u9762\u5411\u4e9a\u592a\u7528\u6237\u7684\u6570\u636e\u5e93\u5e94\u7528\u3002\u4f46\u8de8\u5883\u8bbf\u95ee\u53ef\u80fd\u53d7\u7f51\u7edc\u6ce2\u52a8\u5f71\u54cd\uff0c\u9ad8\u5e76\u53d1\u573a\u666f\u4e0bMySQL\u6613\u51fa\u73b0\u6162\u67e5\u8be2\u3001\u8fde\u63a5\u8017\u5c3d\u6216IO\u74f6\u9888\u3002\u4f18\u5316\u524d\u9700\u4e86\u89e3\u670d\u52a1\u5668\u786c\u4ef6\uff1a\u5982Intel Xeon\u5904\u7406\u5668\u3001SSD\u56fa\u6001\u786c\u76d8\u548c\u5927\u5185\u5b58\u914d\u7f6e\uff0c\u80fd\u4e3aMySQL\u63d0\u4f9b\u5f3a\u52b2\u652f\u6491\u3002<\/p>\n<p dir=\"auto\">\u4f8b\u5982\uff0c\u9ad8\u914d\u9999\u6e2f\u670d\u52a1\u5668\u914d\u590732GB\u5185\u5b58\u548c\u591a\u6838CPU\u65f6\uff0cMySQL\u7684InnoDB\u7f13\u51b2\u6c60\u53ef\u5145\u5206\u5229\u7528\u5185\u5b58\u7f13\u5b58\u6570\u636e\uff0c\u51cf\u5c11\u78c1\u76d8IO\u3002\u5b9e\u9645\u6d4b\u8bd5\u663e\u793a\uff0c\u5728\u9999\u6e2f\u670d\u52a1\u5668\u4e0a\u8fd0\u884cMySQL\uff0c\u5408\u7406\u4f18\u5316\u540e\u67e5\u8be2\u54cd\u5e94\u65f6\u95f4\u53ef\u7f29\u77ed40%\u4ee5\u4e0a\uff0c\u7279\u522b\u662f\u5728\u7535\u5546\u8ba2\u5355\u67e5\u8be2\u6216\u7528\u6237\u6570\u636e\u4ea4\u4e92\u573a\u666f\u4e2d\u6548\u679c\u663e\u8457\u3002\u540c\u65f6\uff0c\u514d\u5907\u6848\u7279\u6027\u8ba9\u6570\u636e\u5e93\u5feb\u901f\u4e0a\u7ebf\uff0c\u907f\u514d\u56fd\u5185\u670d\u52a1\u5668\u5907\u6848\u5ef6\u8bef\u3002<\/p>\n<h3 dir=\"auto\">MySQL\u6838\u5fc3\u914d\u7f6e\u53c2\u6570\u4f18\u5316<\/h3>\n<p dir=\"auto\">MySQL\u6027\u80fd\u4f18\u5316\u9996\u5148\u4ecemy.cnf\u914d\u7f6e\u6587\u4ef6\u5165\u624b\uff0c\u9488\u5bf9\u9999\u6e2f\u670d\u52a1\u5668\u7684\u5185\u5b58\u548cIO\u7279\u6027\u8c03\u6574\u5173\u952e\u53c2\u6570\u3002<\/p>\n<p dir=\"auto\">\u9996\u8981\u53c2\u6570\u662finnodb_buffer_pool_size\uff0c\u8fd9\u662fInnoDB\u5b58\u50a8\u5f15\u64ce\u7684\u6570\u636e\u548c\u7d22\u5f15\u7f13\u5b58\u533a\u3002\u63a8\u8350\u8bbe\u7f6e\u4e3a\u7269\u7406\u5185\u5b58\u768470%-80%\uff0c\u598216GB\u5185\u5b58\u670d\u52a1\u5668\u8bbe\u4e3a12GB\uff0c32GB\u5185\u5b58\u8bbe\u4e3a24GB\u3002\u8fd9\u80fd\u5927\u5e45\u63d0\u5347\u7f13\u5b58\u547d\u4e2d\u7387\uff0c\u907f\u514d\u9891\u7e41\u78c1\u76d8\u8bfb\u53d6\u3002\u5728\u9999\u6e2f\u670d\u52a1\u5668SSD\u786c\u76d8\u73af\u5883\u4e0b\uff0c\u8be5\u8bbe\u7f6e\u53ef\u4f7f\u8bfb\u64cd\u4f5c\u5ef6\u8fdf\u964d\u4f4e30%-50%\u3002<\/p>\n<p dir=\"auto\">\u5176\u4ed6\u91cd\u8981\u53c2\u6570\u5305\u62ec\uff1a<\/p>\n<ul dir=\"auto\">\n<li>innodb_log_file_size\uff1a\u5efa\u8bae\u8bbe\u4e3a512MB-1GB\uff0c\u9ad8\u5199\u5165\u8d1f\u8f7d\u65f6\u63d0\u5347\u4e8b\u52a1\u541e\u5410\u91cf\u3002<\/li>\n<li>innodb_flush_log_at_trx_commit\uff1a\u8bbe\u4e3a2\uff08\u975e\u5173\u952e\u4e1a\u52a1\uff09\u53ef\u63d0\u9ad8\u5199\u5165\u6027\u80fd\uff0c\u4f46\u9700\u6743\u8861\u6570\u636e\u5b89\u5168\u3002<\/li>\n<li>query_cache_size\uff1a\u867dMySQL 8.0\u540e\u9010\u6b65\u5e9f\u5f03\uff0c\u4f46\u65e7\u7248\u672c\u53ef\u9002\u5ea6\u542f\u7528\uff0c\u7ed3\u5408\u9999\u6e2f\u4f4e\u5ef6\u8fdf\u7f51\u7edc\u51cf\u5c11\u91cd\u590d\u67e5\u8be2\u5f00\u9500\u3002<\/li>\n<li>max_connections\uff1a\u6839\u636e\u5e76\u53d1\u9700\u6c42\u8bbe\u4e3a1000-3000\uff0c\u907f\u514d\u201cToo many connections\u201d\u9519\u8bef\u3002<\/li>\n<\/ul>\n<p dir=\"auto\">\u9488\u5bf9\u9999\u6e2f\u670d\u52a1\u5668\u7684\u7f51\u7edc\u7279\u6027\uff0c\u589e\u52a0net_read_timeout\u548cnet_write_timeout\u81f360-120\u79d2\uff0c\u5e94\u5bf9\u5076\u53d1\u8de8\u5883\u5ef6\u8fdf\u3002\u4f18\u5316\u540e\uff0c\u9999\u6e2f\u670d\u52a1\u5668MySQL\u5728\u9ad8\u5cf0\u671f\u7a33\u5b9a\u6027\u663e\u8457\u63d0\u5347\u3002<\/p>\n<h3 dir=\"auto\">\u7d22\u5f15\u8bbe\u8ba1\u4e0e\u67e5\u8be2\u8bed\u53e5\u4f18\u5316<\/h3>\n<p dir=\"auto\">\u7d22\u5f15\u662fMySQL\u6027\u80fd\u63d0\u5347\u7684\u6838\u5fc3\u3002\u4f7f\u7528EXPLAIN\u5206\u6790\u6267\u884c\u8ba1\u5212\uff0c\u68c0\u67e5type\u5b57\u6bb5\u662f\u5426\u4e3aALL\uff08\u5168\u8868\u626b\u63cf\uff09\uff0c\u82e5\u51fa\u73b0\u9700\u7acb\u5373\u6dfb\u52a0\u7d22\u5f15\u3002<\/p>\n<p dir=\"auto\">\u6700\u4f73\u5b9e\u8df5\uff1a<\/p>\n<ul dir=\"auto\">\n<li>\u4e3aWHERE\u3001JOIN\u3001ORDER BY\u548cGROUP BY\u5e38\u7528\u5b57\u6bb5\u521b\u5efa\u5355\u5217\u6216\u590d\u5408\u7d22\u5f15\uff0c\u907f\u514d\u5197\u4f59\u7d22\u5f15\u3002<\/li>\n<li>\u4f18\u5148\u4f7f\u7528\u8986\u76d6\u7d22\u5f15\uff0c\u53ea\u67e5\u8be2\u7d22\u5f15\u5b57\u6bb5\u51cf\u5c11\u56de\u8868\u3002<\/li>\n<li>\u907f\u514dSELECT *\uff0c\u6307\u5b9a\u6240\u9700\u5217\uff0c\u7279\u522b\u662f\u5728\u9999\u6e2f\u670d\u52a1\u5668\u8de8\u5883\u4f20\u8f93\u65f6\u51cf\u5c11\u7f51\u7edc\u8d1f\u8f7d\u3002<\/li>\n<li>\u7528EXPLAIN\u68c0\u67e5Extra\u5b57\u6bb5\uff0c\u82e5\u51fa\u73b0Using filesort\u6216Using temporary\uff0c\u53ef\u901a\u8fc7\u7d22\u5f15\u4f18\u5316\u6392\u5e8f\u548c\u4e34\u65f6\u8868\u3002<\/li>\n<\/ul>\n<p dir=\"auto\">\u5728\u9999\u6e2f\u670d\u52a1\u5668\u9ad8\u5e76\u53d1\u573a\u666f\uff0c\u5982SEO\u7ad9\u7fa4\u6216\u7535\u5546\u5e94\u7528\uff0c\u5408\u7406\u7d22\u5f15\u53ef\u5c06\u6162\u67e5\u8be2\u6bd4\u4f8b\u964d\u4f4e80%\u3002\u5206\u9875\u67e5\u8be2\u907f\u514d\u5927OFFSET\uff0c\u4f7f\u7528\u201c\u8bb0\u4f4f\u4e0a\u6b21ID\u201d\u65b9\u5f0f\u4f18\u5316\u3002<\/p>\n<h3 dir=\"auto\">\u7f13\u5b58\u673a\u5236\u4e0e\u6162\u67e5\u8be2\u5904\u7406<\/h3>\n<p dir=\"auto\">\u7f13\u5b58\u662f\u7f13\u89e3\u6570\u636e\u5e93\u538b\u529b\u7684\u6709\u6548\u624b\u6bb5\u3002\u5f00\u542f\u6162\u67e5\u8be2\u65e5\u5fd7\uff08slow_query_log=1\uff09\uff0c\u8bbe\u7f6elong_query_time\u4e3a1\u79d2\uff0c\u7ed3\u5408pt-query-digest\u5de5\u5177\u5206\u6790\u65e5\u5fd7\uff0c\u5b9a\u4f4d\u74f6\u9888\u67e5\u8be2\u3002<\/p>\n<p dir=\"auto\">\u63a8\u8350\u7ed3\u5408Redis\u7f13\u5b58\u70ed\u70b9\u6570\u636e\uff0c\u5728\u9999\u6e2f\u670d\u52a1\u5668\u90e8\u7f72\u4e3b\u4ece\u590d\u5236\u65f6\uff0c\u5229\u7528Redis\u8de8\u533a\u57df\u540c\u6b65\u529f\u80fd\u63d0\u5347\u547d\u4e2d\u7387\u3002InnoDB\u7f13\u51b2\u6c60\u7ed3\u5408\u670d\u52a1\u5668\u5927\u5185\u5b58\uff08\u598232GB\u914d\u7f6e\uff09\uff0c\u53ef\u7f13\u5b58\u5927\u90e8\u5206\u70ed\u6570\u636e\uff0c\u51cf\u5c11IO\u3002<\/p>\n<p dir=\"auto\">\u5bf9\u4e8e\u8de8\u5883\u4e1a\u52a1\uff0c\u67e5\u8be2\u4f18\u5316\u9700\u8003\u8651\u7f51\u7edc\u5f80\u8fd4\uff1a\u6279\u91cf\u64cd\u4f5c\u66ff\u4ee3\u5faa\u73af\u5355\u6761\u67e5\u8be2\uff0c\u51cf\u5c11RTT\u5f71\u54cd\u3002\u5b9e\u9645\u6848\u4f8b\u663e\u793a\uff0c\u4f18\u5316\u540e\u9999\u6e2f\u670d\u52a1\u5668MySQL\u5728\u5927\u9646\u7528\u6237\u8bbf\u95ee\u65f6\uff0c\u54cd\u5e94\u65f6\u95f4\u4ece300ms\u964d\u81f380ms\u3002<\/p>\n<h3 dir=\"auto\">\u786c\u4ef6\u4e0e\u9002\u7528\u573a\u666f\u4f18\u5316\u5efa\u8bae<\/h3>\n<p dir=\"auto\">\u9999\u6e2f\u670d\u52a1\u5668\u7684SSD\u786c\u76d8\u548c\u9ad8\u6838CPU\u662fMySQL\u4f18\u5316\u7684\u786c\u4ef6\u57fa\u7840\u3002\u9009\u62e9\u914d\u5907240GB\u4ee5\u4e0aSSD\u7684\u5957\u9910\uff0c\u786e\u4fdd\u9ad8IOPS\u652f\u6301InnoDB\u968f\u673a\u8bfb\u5199\u3002\u591a\u6838\u5904\u7406\u5668\uff08\u5982E5-2660 8\u6838\uff09\u9002\u5408\u9ad8\u5e76\u53d1\u67e5\u8be2\u3002<\/p>\n<p dir=\"auto\">\u9002\u7528\u573a\u666f\uff1a<\/p>\n<ul dir=\"auto\">\n<li>\u5c0f\u578b\u7f51\u7ad9\u6216\u535a\u5ba2\uff1a8GB-16GB\u5185\u5b58\u5957\u9910\uff0c\u57fa\u7840\u914d\u7f6e\u4f18\u5316\u5373\u53ef\u3002<\/li>\n<li>\u7535\u5546\u6216\u4e2d\u578b\u5e94\u7528\uff1a\u4f18\u5148CN2 GIA\u7ebf\u8def\uff0c32GB\u5185\u5b58\u9ad8\u914d\uff0c\u91cd\u70b9\u8c03\u4f18\u7f13\u51b2\u6c60\u3002<\/li>\n<li>\u9ad8\u8d1f\u8f7d\u6570\u636e\u5e93\uff1a\u7ad9\u7fa4\u670d\u52a1\u5668\u591aIP\u914d\u7f6e\uff0c\u7ed3\u5408\u5206\u533a\u8868\u548c\u8bfb\u5199\u5206\u79bb\u3002<\/li>\n<\/ul>\n<p dir=\"auto\">\u5b9a\u671f\u4f7f\u7528OPTIMIZE TABLE\u788e\u7247\u6574\u7406\uff0c\u76d1\u63a7Performance Schema\uff0c\u786e\u4fdd\u957f\u671f\u7a33\u5b9a\u3002<\/p>\n<h3 dir=\"auto\">\u7ed3\u8bed\uff1a\u5145\u5206\u53d1\u6325\u9999\u6e2f\u670d\u52a1\u5668MySQL\u6f5c\u529b<\/h3>\n<p 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