{"id":75808,"date":"2024-10-16T01:24:17","date_gmt":"2024-10-15T17:24:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/75808\/"},"modified":"2024-10-16T01:24:17","modified_gmt":"2024-10-15T17:24:17","slug":"mysql-%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98%e8%ae%8a%e9%87%8f%e7%9a%84%e7%9b%b8%e9%97%9c%e8%a7%a3%e9%87%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/75808\/","title":{"rendered":"MySQL \u67e5\u8a62\u7de9\u5b58\u8b8a\u91cf\u7684\u76f8\u95dc\u89e3\u91cb"},"content":{"rendered":"<h1 id=\"mysql-%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98%e8%ae%8a%e9%87%8f%e7%9a%84%e7%9b%b8%e9%97%9c%e8%a7%a3%e9%87%8b-UbLnSnNiyN\">MySQL \u67e5\u8a62\u7de9\u5b58\u8b8a\u91cf\u7684\u76f8\u95dc\u89e3\u91cb<\/h1>\n<p>\u5728\u4f7f\u7528 MySQL \u6578\u64da\u5eab\u6642\uff0c\u67e5\u8a62\u7de9\u5b58\u662f\u4e00\u500b\u91cd\u8981\u7684\u6027\u80fd\u512a\u5316\u5de5\u5177\u3002\u5b83\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u7684\u57f7\u884c\u901f\u5ea6\uff0c\u7279\u5225\u662f\u5728\u91cd\u8907\u57f7\u884c\u76f8\u540c\u67e5\u8a62\u7684\u60c5\u6cc1\u4e0b\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e MySQL \u67e5\u8a62\u7de9\u5b58\u7684\u8b8a\u91cf\u53ca\u5176\u76f8\u95dc\u914d\u7f6e\uff0c\u5e6b\u52a9\u7528\u6236\u66f4\u597d\u5730\u7406\u89e3\u548c\u5229\u7528\u9019\u4e00\u529f\u80fd\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98%ef%bc%9f-UbLnSnNiyN\">\u4ec0\u9ebc\u662f\u67e5\u8a62\u7de9\u5b58\uff1f<\/h2>\n<p>\u67e5\u8a62\u7de9\u5b58\u662f MySQL \u63d0\u4f9b\u7684\u4e00\u7a2e\u6a5f\u5236\uff0c\u7528\u65bc\u5b58\u5132 SELECT \u67e5\u8a62\u7684\u7d50\u679c\u3002\u7576\u76f8\u540c\u7684\u67e5\u8a62\u518d\u6b21\u57f7\u884c\u6642\uff0cMySQL \u53ef\u4ee5\u76f4\u63a5\u5f9e\u7de9\u5b58\u4e2d\u8fd4\u56de\u7d50\u679c\uff0c\u800c\u7121\u9700\u91cd\u65b0\u57f7\u884c\u67e5\u8a62\u3002\u9019\u6a23\u4e0d\u50c5\u6e1b\u5c11\u4e86 CPU \u7684\u8ca0\u64d4\uff0c\u9084\u80fd\u964d\u4f4e\u78c1\u789f I\/O \u7684\u9700\u6c42\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86-UbLnSnNiyN\">\u67e5\u8a62\u7de9\u5b58\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>\u7576\u4e00\u500b\u67e5\u8a62\u88ab\u57f7\u884c\u6642\uff0cMySQL \u6703\u6aa2\u67e5\u8a72\u67e5\u8a62\u7684\u7d50\u679c\u662f\u5426\u5df2\u7d93\u5b58\u5728\u65bc\u7de9\u5b58\u4e2d\u3002\u5982\u679c\u5b58\u5728\uff0c\u5247\u76f4\u63a5\u8fd4\u56de\u7de9\u5b58\u7684\u7d50\u679c\uff1b\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5247\u57f7\u884c\u67e5\u8a62\u4e26\u5c07\u7d50\u679c\u5b58\u5165\u7de9\u5b58\u3002\u9019\u4e00\u904e\u7a0b\u6d89\u53ca\u5230\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li>\u67e5\u8a62\u57f7\u884c\u524d\uff0c\u6aa2\u67e5\u7de9\u5b58\u3002<\/li>\n<li>\u5982\u679c\u7de9\u5b58\u547d\u4e2d\uff0c\u8fd4\u56de\u7de9\u5b58\u7d50\u679c\u3002<\/li>\n<li>\u5982\u679c\u7de9\u5b58\u672a\u547d\u4e2d\uff0c\u57f7\u884c\u67e5\u8a62\u4e26\u5c07\u7d50\u679c\u5b58\u5165\u7de9\u5b58\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98%e7%9a%84%e8%ae%8a%e9%87%8f-UbLnSnNiyN\">\u67e5\u8a62\u7de9\u5b58\u7684\u8b8a\u91cf<\/h2>\n<p>MySQL \u63d0\u4f9b\u4e86\u4e00\u4e9b\u8b8a\u91cf\u4f86\u63a7\u5236\u67e5\u8a62\u7de9\u5b58\u7684\u884c\u70ba\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u91cd\u8981\u7684\u67e5\u8a62\u7de9\u5b58\u8b8a\u91cf\uff1a<\/p>\n<h3 id=\"1-query_cache_type-UbLnSnNiyN\">1. query_cache_type<\/h3>\n<p>\u9019\u500b\u8b8a\u91cf\u7528\u65bc\u8a2d\u7f6e\u67e5\u8a62\u7de9\u5b58\u7684\u985e\u578b\u3002\u5b83\u53ef\u4ee5\u8a2d\u7f6e\u70ba\u4ee5\u4e0b\u5e7e\u500b\u503c\uff1a<\/p>\n<ul>\n<li><code>0<\/code>\uff1a\u7981\u7528\u67e5\u8a62\u7de9\u5b58\u3002<\/li>\n<li><code>1<\/code>\uff1a\u555f\u7528\u67e5\u8a62\u7de9\u5b58\u3002<\/li>\n<li><code>2<\/code>\uff1a\u50c5\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528 SQL_NO_CACHE \u6642\u7981\u7528\u7de9\u5b58\u3002<\/li>\n<\/ul>\n<h3 id=\"2-query_cache_size-UbLnSnNiyN\">2. query_cache_size<\/h3>\n<p>\u9019\u500b\u8b8a\u91cf\u7528\u65bc\u8a2d\u7f6e\u67e5\u8a62\u7de9\u5b58\u7684\u5927\u5c0f\uff0c\u55ae\u4f4d\u70ba\u5b57\u7bc0\u3002\u5408\u7406\u7684\u8a2d\u7f6e\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4f46\u904e\u5927\u7684\u7de9\u5b58\u53ef\u80fd\u6703\u5c0e\u81f4\u5167\u5b58\u4e0d\u8db3\u3002<\/p>\n<h3 id=\"3-query_cache_limit-UbLnSnNiyN\">3. query_cache_limit<\/h3>\n<p>\u9019\u500b\u8b8a\u91cf\u7528\u65bc\u8a2d\u7f6e\u55ae\u500b\u67e5\u8a62\u7d50\u679c\u7684\u6700\u5927\u7de9\u5b58\u5927\u5c0f\u3002\u5982\u679c\u67e5\u8a62\u7d50\u679c\u8d85\u904e\u9019\u500b\u5927\u5c0f\uff0c\u5247\u4e0d\u6703\u88ab\u7de9\u5b58\u3002<\/p>\n<h3 id=\"4-query_cache_min_res_unit-UbLnSnNiyN\">4. query_cache_min_res_unit<\/h3>\n<p>\u9019\u500b\u8b8a\u91cf\u7528\u65bc\u8a2d\u7f6e\u67e5\u8a62\u7de9\u5b58\u4e2d\u6700\u5c0f\u7684\u55ae\u4f4d\u5927\u5c0f\u3002\u9019\u6709\u52a9\u65bc\u63d0\u9ad8\u5167\u5b58\u7684\u4f7f\u7528\u6548\u7387\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-UbLnSnNiyN\">\u67e5\u8a62\u7de9\u5b58\u7684\u512a\u7f3a\u9ede<\/h2>\n<p>\u96d6\u7136\u67e5\u8a62\u7de9\u5b58\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6027\u80fd\uff0c\u4f46\u4e5f\u6709\u5176\u7f3a\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u512a\u9ede\uff1a<\/strong>\u80fd\u5920\u52a0\u5feb\u91cd\u8907\u67e5\u8a62\u7684\u901f\u5ea6\uff0c\u6e1b\u5c11 CPU \u548c I\/O \u8ca0\u64d4\u3002<\/li>\n<li><strong>\u7f3a\u9ede\uff1a<\/strong>\u5728\u9ad8\u983b\u7387\u7684\u5beb\u5165\u64cd\u4f5c\u4e2d\uff0c\u7de9\u5b58\u53ef\u80fd\u6703\u983b\u7e41\u5931\u6548\uff0c\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e9%85%8d%e7%bd%ae%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98-UbLnSnNiyN\">\u5982\u4f55\u914d\u7f6e\u67e5\u8a62\u7de9\u5b58<\/h2>\n<p>\u8981\u914d\u7f6e\u67e5\u8a62\u7de9\u5b58\uff0c\u53ef\u4ee5\u5728 MySQL \u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u9032\u884c\u8a2d\u7f6e\uff0c\u6216\u4f7f\u7528 SQL \u8a9e\u53e5\u9032\u884c\u52d5\u614b\u4fee\u6539\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SET GLOBAL query_cache_type = 1;\nSET GLOBAL query_cache_size = 1048576; -- 1MB\nSET GLOBAL query_cache_limit = 1048576; -- 1MB\n<\/code><\/pre>\n<p>\u9019\u4e9b\u8a2d\u7f6e\u5c07\u555f\u7528\u67e5\u8a62\u7de9\u5b58\u4e26\u8a2d\u7f6e\u5176\u5927\u5c0f\u548c\u9650\u5236\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-UbLnSnNiyN\">\u7d50\u8ad6<\/h2>\n<p>MySQL \u67e5\u8a62\u7de9\u5b58\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002\u901a\u904e\u5408\u7406\u914d\u7f6e\u67e5\u8a62\u7de9\u5b58\u8b8a\u91cf\uff0c\u7528\u6236\u53ef\u4ee5\u5728\u7279\u5b9a\u7684\u61c9\u7528\u5834\u666f\u4e2d\u7372\u5f97\u66f4\u597d\u7684\u6027\u80fd\u8868\u73fe\u3002\u7136\u800c\uff0c\u4f7f\u7528\u67e5\u8a62\u7de9\u5b58\u6642\u4e5f\u9700\u8003\u616e\u5230\u5176\u6f5b\u5728\u7684\u7f3a\u9ede\uff0c\u7279\u5225\u662f\u5728\u9ad8\u983b\u5beb\u5165\u7684\u60c5\u6cc1\u4e0b\u3002\u4e86\u89e3\u9019\u4e9b\u8b8a\u91cf\u53ca\u5176\u914d\u7f6e\u65b9\u6cd5\uff0c\u5c07\u6709\u52a9\u65bc\u7528\u6236\u66f4\u6709\u6548\u5730\u7ba1\u7406 MySQL \u6578\u64da\u5eab\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u6578\u64da\u5eab\u7ba1\u7406\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3 MySQL \u67e5\u8a62\u7de9\u5b58\u8b8a\u91cf\u7684\u529f\u80fd\u8207\u8a2d\u5b9a\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\uff0c\u512a\u5316\u67e5\u8a62\u6548\u7387\uff0c\u78ba\u4fdd\u5feb\u901f\u97ff\u61c9\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-75808","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75808","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=75808"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75808\/revisions"}],"predecessor-version":[{"id":75809,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75808\/revisions\/75809"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=75808"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=75808"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=75808"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}