{"id":200087,"date":"2025-05-06T09:29:05","date_gmt":"2025-05-06T01:29:05","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200087\/"},"modified":"2025-05-06T09:29:05","modified_gmt":"2025-05-06T01:29:05","slug":"%e4%bc%98%e5%8c%96mysql%e8%bf%9e%e6%8e%a5%e6%95%b0%e6%8e%a7%e5%88%b6%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200087\/","title":{"rendered":"\u4f18\u5316MySQL\u8fde\u63a5\u6570\u63a7\u5236\u7684\u65b9\u6cd5"},"content":{"rendered":"

<\/b> <\/p>\n

\u4f18\u5316MySQL\u8fde\u63a5\u6570\u63a7\u5236\u7684\u65b9\u6cd5<\/h1>\n

MySQL\u8fde\u63a5\u6570\u7ba1\u7406\u662f\u4f18\u5316\u6570\u636e\u5e93\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u7684\u5173\u952e\u3002\u968f\u7740\u8fde\u63a5\u6570\u7684\u589e\u52a0\uff0c\u7cfb\u7edf\u8d44\u6e90\u6d88\u8017\u4e5f\u4f1a\u968f\u4e4b\u589e\u5927\uff0c\u56e0\u6b64\u5408\u7406\u7ba1\u7406\u8fde\u63a5\u6570\u81f3\u5173\u91cd\u8981\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f18\u5316MySQL\u8fde\u63a5\u6570\u7ba1\u7406\uff0c\u5305\u62ec\u8c03\u6574\u914d\u7f6e\u3001\u63a7\u5236\u8fde\u63a5\u6570\u3001\u76d1\u63a7\u8fde\u63a5\u6570\u548c\u4f18\u5316\u67e5\u8be2\u6027\u80fd\u7b49\u65b9\u6cd5\u3002\u901a\u8fc7\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u8fde\u63a5\u6570\uff0c\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n

\u5982\u4f55\u4f18\u5316MySQL\u8fde\u63a5\u6570\u7ba1\u7406<\/p>\n

MySQL \u662f\u4e00\u79cd\u6d41\u884c\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u7f51\u7ad9\u548c\u5e94\u7528\u7a0b\u5e8f\u4e2d\u3002\u5728\u5b9e\u9645\u7684\u5e94\u7528\u8fc7\u7a0b\u4e2d\uff0cMySQL \u8fde\u63a5\u6570\u7ba1\u7406\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u95ee\u9898\uff0c\u5c24\u5176\u662f\u5728\u9ad8\u5e76\u53d1\u60c5\u51b5\u4e0b\uff0c\u5408\u7406\u7ba1\u7406\u8fde\u63a5\u6570\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f18\u5316 MySQL \u8fde\u63a5\u6570\u7ba1\u7406\uff0c\u5305\u62ec\u8be6\u7ec6\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

\u4e00\u3001\u7406\u89e3\u8fde\u63a5\u6570\u7ba1\u7406<\/p>\n

\u5728 MySQL \u4e2d\uff0c\u8fde\u63a5\u6570\u662f\u6307\u7cfb\u7edf\u80fd\u591f\u540c\u65f6\u8fde\u63a5\u5230 MySQL \u670d\u52a1\u5668\u7684\u5ba2\u6237\u7aef\u6570\u91cf\u3002\u6bcf\u4e2a\u8fde\u63a5\u90fd\u5360\u7528\u7cfb\u7edf\u8d44\u6e90\uff0c\u5305\u62ec\u5185\u5b58\u3001CPU \u548c\u7f51\u7edc\u7b49\u3002\u5f53\u8fde\u63a5\u6570\u8fc7\u591a\u65f6\uff0c\u4f1a\u5bfc\u81f4\u7cfb\u7edf\u8d44\u6e90\u4e0d\u8db3\u3001\u6027\u80fd\u4e0b\u964d\u751a\u81f3\u7cfb\u7edf\u5d29\u6e83\u3002\u56e0\u6b64\uff0c\u5408\u7406\u7ba1\u7406\u8fde\u63a5\u6570\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n

\u4e8c\u3001\u4f18\u5316\u8fde\u63a5\u6570\u914d\u7f6e<\/p>\n

    \n
  1. \u8c03\u6574 max_connections \u53c2\u6570\uff1a\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cMySQL \u7684 max_connections \u53c2\u6570\u8bbe\u7f6e\u8f83\u5c0f\uff0c\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u914d\u7f6e\u6587\u4ef6\u6765\u589e\u52a0\u8fde\u63a5\u6570\u9650\u5236\u3002\u627e\u5230 my.cnf \u6216 my.ini \u6587\u4ef6\uff0c\u4fee\u6539\u5176\u4e2d\u7684 max_connections \u53c2\u6570\u503c\u3002\u4f8b\u5982\uff1a<\/li>\n<\/ol>\n
    max_connections = 1000<\/pre>\n
      \n
    1. \u63a7\u5236\u8fde\u63a5\u6570\uff1a\u9664\u4e86\u589e\u52a0\u8fde\u63a5\u6570\u9650\u5236\uff0c\u8fd8\u53ef\u4ee5\u901a\u8fc7\u63a7\u5236\u5ba2\u6237\u7aef\u8fde\u63a5\u6570\u91cf\u6765\u907f\u514d\u8fde\u63a5\u6570\u8fc7\u591a\u3002\u53ef\u4ee5\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u8bbe\u7f6e\u8fde\u63a5\u6c60\u6765\u7ba1\u7406\u8fde\u63a5\uff0c\u786e\u4fdd\u6bcf\u4e2a\u8fde\u63a5\u90fd\u5f97\u5230\u6709\u6548\u91ca\u653e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684 PHP \u8fde\u63a5\u6c60\u793a\u4f8b\uff1a<\/li>\n<\/ol>\n
      $dsn = 'mysql:host=localhost;dbname=test';\n$username = 'username';\n$password = 'password';\n\n$pdo = new PDO($dsn, $username, $password);\n\n\/\/ \u6267\u884c\u67e5\u8be2\n$stmt = $pdo->query('SELECT * FROM users');\n\n\/\/ \u5173\u95ed\u8fde\u63a5\n$pdo = null;<\/pre>\n
      \u4e09\u3001\u76d1\u63a7\u8fde\u63a5\u6570<\/p>\n
        \n
      1. \u4f7f\u7528 SHOW STATUS \u547d\u4ee4\u6765\u76d1\u63a7\u8fde\u63a5\u6570\uff1a\u53ef\u4ee5\u901a\u8fc7 MySQL \u7684 SHOW STATUS \u547d\u4ee4\u6765\u5b9e\u65f6\u76d1\u63a7\u8fde\u63a5\u6570\u3002\u5728 MySQL \u63a7\u5236\u53f0\u4e2d\u8f93\u5165\u4ee5\u4e0b\u547d\u4ee4\u5373\u53ef\u67e5\u770b\u5f53\u524d\u8fde\u63a5\u6570\u60c5\u51b5\uff1a<\/li>\n<\/ol>\n
        SHOW STATUS LIKE 'Threads_connected';<\/pre>\n
          \n
        1. \u4f7f\u7528\u76d1\u63a7\u5de5\u5177\uff1a\u9664\u4e86\u76f4\u63a5\u5728 MySQL \u63a7\u5236\u53f0\u4e2d\u67e5\u770b\u8fde\u63a5\u6570\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u76d1\u63a7\u5de5\u5177\u6765\u76d1\u63a7\u6574\u4e2a\u7cfb\u7edf\u7684\u8fde\u63a5\u6570\u60c5\u51b5\u3002\u5e38\u7528\u7684\u76d1\u63a7\u5de5\u5177\u5305\u62ec Zabbix\u3001Nagios \u7b49\u3002<\/li>\n<\/ol>\n
          \u56db\u3001\u4f18\u5316\u67e5\u8be2\u6027\u80fd<\/p>\n
            \n
          1. \u907f\u514d\u957f\u65f6\u95f4\u5360\u7528\u8fde\u63a5\u800c\u4e0d\u91ca\u653e\uff1a\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u8981\u53ca\u65f6\u91ca\u653e\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u907f\u514d\u957f\u65f6\u95f4\u5360\u7528\u8fde\u63a5\u800c\u4e0d\u91ca\u653e\uff0c\u5bfc\u81f4\u8fde\u63a5\u6570\u4e0d\u8db3\u3002\u53ef\u4ee5\u4f7f\u7528 try-catch-finally \u7ed3\u6784\u6765\u786e\u4fdd\u5728\u5f02\u5e38\u53d1\u751f\u65f6\u4e5f\u80fd\u6b63\u786e\u91ca\u653e\u8fde\u63a5\u3002<\/li>\n
          2. \u5408\u7406\u8bbe\u8ba1 SQL \u67e5\u8be2\u8bed\u53e5\uff1a\u8bbe\u8ba1\u9ad8\u6548\u7684 SQL \u67e5\u8be2\u8bed\u53e5\u53ef\u4ee5\u51cf\u5c11\u5bf9\u6570\u636e\u5e93\u7684\u8bbf\u95ee\u6b21\u6570\uff0c\u51cf\u8f7b\u6570\u636e\u5e93\u8d1f\u62c5\uff0c\u4ece\u800c\u964d\u4f4e\u8fde\u63a5\u6570\u7684\u4f7f\u7528\u3002\u907f\u514d\u5728\u5faa\u73af\u4e2d\u6267\u884c SQL \u67e5\u8be2\uff0c\u5c3d\u91cf\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u67e5\u8be2\u64cd\u4f5c\u3002<\/li>\n<\/ol>\n
            \u4e94\u3001\u603b\u7ed3<\/p>\n
            \u5408\u7406\u7ba1\u7406 MySQL \u7684\u8fde\u63a5\u6570\u5bf9\u7cfb\u7edf\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u81f3\u5173\u91cd\u8981\u3002\u901a\u8fc7\u8c03\u6574\u8fde\u63a5\u6570\u914d\u7f6e\u3001\u63a7\u5236\u8fde\u63a5\u6570\u3001\u76d1\u63a7\u8fde\u63a5\u6570\u548c\u4f18\u5316\u67e5\u8be2\u6027\u80fd\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u8fde\u63a5\u6570\u7684\u6709\u6548\u7ba1\u7406\u3002\u5e0c\u671b\u672c\u6587\u4ecb\u7ecd\u7684\u65b9\u6cd5\u80fd\u591f\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u4f18\u5316 MySQL \u8fde\u63a5\u6570\u7ba1\u7406\uff0c\u5728\u9ad8\u5e76\u53d1\u73af\u5883\u4e0b\u63d0\u5347\u7cfb\u7edf\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n
            \u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\u4e3b\u673a\u5b9d\u8d1d\uff01\u66f4\u591a\u5173\u4e8e\u6570\u636e\u5e93\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u3002<\/p>\n
            \n
            \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
            \u4f18\u5316MySQL\u8fde\u63a5\u6570\u63a7\u5236\u7684\u65b9\u6cd5 ...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-200087","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200087","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=200087"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200087\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200087"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200087"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200087"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}