{"id":77356,"date":"2024-10-16T10:43:54","date_gmt":"2024-10-16T02:43:54","guid":{"rendered":"https:\/\/server.hk\/cnblog\/77356\/"},"modified":"2024-10-16T10:43:54","modified_gmt":"2024-10-16T02:43:54","slug":"mysql%e5%84%aa%e5%8c%96%e7%9a%84%e4%ba%94%e5%80%8b%e7%b6%ad%e5%ba%a6%ef%bc%8c%e4%bd%a0%e5%ad%b8%e6%9c%83%e4%ba%86%e5%97%8e%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/77356\/","title":{"rendered":"MySQL\u512a\u5316\u7684\u4e94\u500b\u7dad\u5ea6\uff0c\u4f60\u5b78\u6703\u4e86\u55ce\uff1f"},"content":{"rendered":"<h1 id=\"mysql%e5%84%aa%e5%8c%96%e7%9a%84%e4%ba%94%e5%80%8b%e7%b6%ad%e5%ba%a6%ef%bc%8c%e4%bd%a0%e5%ad%b8%e6%9c%83%e4%ba%86%e5%97%8e%ef%bc%9f-gdumhYFxtM\">MySQL\u512a\u5316\u7684\u4e94\u500b\u7dad\u5ea6\uff0c\u4f60\u5b78\u6703\u4e86\u55ce\uff1f<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cMySQL\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5982\u4f55\u6709\u6548\u5730\u512a\u5316MySQL\u6210\u70ba\u4e86\u958b\u767c\u8005\u548c\u7cfb\u7d71\u7ba1\u7406\u54e1\u7684\u91cd\u8981\u8ab2\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0eMySQL\u512a\u5316\u7684\u4e94\u500b\u7dad\u5ea6\uff0c\u5e6b\u52a9\u60a8\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u3002<\/p>\n<h2 id=\"1-%e6%9f%a5%e8%a9%a2%e5%84%aa%e5%8c%96-gdumhYFxtM\">1. \u67e5\u8a62\u512a\u5316<\/h2>\n<p>\u67e5\u8a62\u512a\u5316\u662fMySQL\u6027\u80fd\u63d0\u5347\u7684\u9996\u8981\u6b65\u9a5f\u3002\u901a\u904e\u5206\u6790\u67e5\u8a62\u8a9e\u53e5\uff0c\u60a8\u53ef\u4ee5\u627e\u51fa\u6027\u80fd\u74f6\u9838\u3002\u4f7f\u7528EXPLAIN\u8a9e\u53e5\u53ef\u4ee5\u5e6b\u52a9\u60a8\u4e86\u89e3\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff0c\u5f9e\u800c\u9032\u884c\u76f8\u61c9\u7684\u8abf\u6574\u3002<\/p>\n<pre><code>EXPLAIN SELECT * FROM users WHERE age &gt; 30;<\/code><\/pre>\n<p>\u5728\u67e5\u8a62\u4e2d\uff0c\u907f\u514d\u4f7f\u7528SELECT *\uff0c\u800c\u662f\u9078\u64c7\u5fc5\u8981\u7684\u5217\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u50b3\u8f38\u7684\u8ca0\u64d4\u3002\u6b64\u5916\uff0c\u78ba\u4fdd\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u7d22\u5f15\uff0c\u9019\u6a23\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002<\/p>\n<h2 id=\"2-%e7%b4%a2%e5%bc%95%e7%ae%a1%e7%90%86-gdumhYFxtM\">2. \u7d22\u5f15\u7ba1\u7406<\/h2>\n<p>\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u95dc\u9375\u3002\u6b63\u78ba\u7684\u7d22\u5f15\u53ef\u4ee5\u52a0\u901f\u6578\u64da\u6aa2\u7d22\uff0c\u4f46\u904e\u591a\u6216\u4e0d\u7576\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u5beb\u5165\u6027\u80fd\u3002\u5b9a\u671f\u6aa2\u67e5\u548c\u8abf\u6574\u7d22\u5f15\u662f\u5fc5\u8981\u7684\u3002<\/p>\n<ul>\n<li>\u4f7f\u7528UNIQUE\u7d22\u5f15\u4f86\u4fdd\u8b49\u6578\u64da\u7684\u552f\u4e00\u6027\u3002<\/li>\n<li>\u5c0d\u65bc\u7d93\u5e38\u7528\u65bc\u67e5\u8a62\u7684\u5217\uff0c\u8003\u616e\u4f7f\u7528\u8907\u5408\u7d22\u5f15\u3002<\/li>\n<li>\u5b9a\u671f\u4f7f\u7528OPTIMIZE TABLE\u547d\u4ee4\u4f86\u91cd\u5efa\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e9%85%8d%e7%bd%ae%e8%aa%bf%e6%95%b4-gdumhYFxtM\">3. \u914d\u7f6e\u8abf\u6574<\/h2>\n<p>MySQL\u7684\u914d\u7f6e\u5c0d\u6027\u80fd\u6709\u8457\u76f4\u63a5\u5f71\u97ff\u3002\u6839\u64da\u60a8\u7684\u786c\u4ef6\u74b0\u5883\u548c\u61c9\u7528\u9700\u6c42\uff0c\u8abf\u6574MySQL\u7684\u914d\u7f6e\u53c3\u6578\u662f\u5fc5\u8981\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u914d\u7f6e\u9805\u76ee\uff1a<\/p>\n<ul>\n<li><code>innodb_buffer_pool_size<\/code>\uff1a\u9019\u500b\u53c3\u6578\u6c7a\u5b9a\u4e86InnoDB\u5b58\u5132\u5f15\u64ce\u7684\u7de9\u885d\u6c60\u5927\u5c0f\uff0c\u901a\u5e38\u61c9\u8a2d\u7f6e\u70ba\u53ef\u7528\u5167\u5b58\u768470%-80%\u3002<\/li>\n<li><code>max_connections<\/code>\uff1a\u6839\u64da\u61c9\u7528\u7684\u4e26\u767c\u9700\u6c42\uff0c\u9069\u7576\u8abf\u6574\u6700\u5927\u9023\u63a5\u6578\u3002<\/li>\n<li><code>query_cache_size<\/code>\uff1a\u5c0d\u65bc\u8b80\u53d6\u983b\u7e41\u7684\u61c9\u7528\uff0c\u555f\u7528\u67e5\u8a62\u7de9\u5b58\u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88-gdumhYFxtM\">4. \u6578\u64da\u5eab\u8a2d\u8a08<\/h2>\n<p>\u826f\u597d\u7684\u6578\u64da\u5eab\u8a2d\u8a08\u662f\u6027\u80fd\u512a\u5316\u7684\u57fa\u790e\u3002\u9075\u5faa\u6b63\u898f\u5316\u539f\u5247\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u5197\u9918\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u9069\u5ea6\u7684\u53cd\u6b63\u898f\u5316\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u8a2d\u8a08\u6642\u61c9\u8003\u616e\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u5408\u7406\u5283\u5206\u8868\u7d50\u69cb\uff0c\u907f\u514d\u904e\u5927\u7684\u8868\u3002<\/li>\n<li>\u4f7f\u7528\u5408\u9069\u7684\u6578\u64da\u985e\u578b\uff0c\u6e1b\u5c11\u5b58\u5132\u7a7a\u9593\u3002<\/li>\n<li>\u8003\u616e\u4f7f\u7528\u5206\u5340\u8868\u4f86\u7ba1\u7406\u5927\u6578\u64da\u96c6\u3002<\/li>\n<\/ul>\n<h2 id=\"5-%e7%9b%a3%e6%8e%a7%e8%88%87%e8%aa%bf%e8%a9%a6-gdumhYFxtM\">5. \u76e3\u63a7\u8207\u8abf\u8a66<\/h2>\n<p>\u6301\u7e8c\u7684\u76e3\u63a7\u548c\u8abf\u8a66\u662f\u78ba\u4fddMySQL\u6027\u80fd\u7684\u95dc\u9375\u3002\u4f7f\u7528\u5de5\u5177\u5982MySQL Enterprise Monitor\u6216\u7b2c\u4e09\u65b9\u76e3\u63a7\u5de5\u5177\uff0c\u53ef\u4ee5\u5be6\u6642\u8ddf\u8e64\u6578\u64da\u5eab\u6027\u80fd\u6307\u6a19\uff0c\u53ca\u6642\u767c\u73fe\u554f\u984c\u3002<\/p>\n<ul>\n<li>\u76e3\u63a7\u6162\u67e5\u8a62\u65e5\u8a8c\uff0c\u627e\u51fa\u6027\u80fd\u74f6\u9838\u3002<\/li>\n<li>\u5b9a\u671f\u6aa2\u67e5\u7cfb\u7d71\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1\uff0c\u5982CPU\u3001\u5167\u5b58\u548c\u78c1\u789fI\/O\u3002<\/li>\n<li>\u4f7f\u7528\u6027\u80fd\u6a21\u5f0f\uff08Performance Schema\uff09\u4f86\u5206\u6790\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-gdumhYFxtM\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u7684\u512a\u5316\u662f\u4e00\u500b\u591a\u7dad\u5ea6\u7684\u904e\u7a0b\uff0c\u6d89\u53ca\u67e5\u8a62\u512a\u5316\u3001\u7d22\u5f15\u7ba1\u7406\u3001\u914d\u7f6e\u8abf\u6574\u3001\u6578\u64da\u5eab\u8a2d\u8a08\u4ee5\u53ca\u76e3\u63a7\u8207\u8abf\u8a66\u7b49\u65b9\u9762\u3002\u901a\u904e\u9019\u4e9b\u65b9\u6cd5\uff0c\u60a8\u53ef\u4ee5\u986f\u8457\u63d0\u5347\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u7684\u9ad8\u6548\u904b\u884c\u3002\u5982\u679c\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u652f\u6301\u6216\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8003\u616e\u6211\u5011\u7684<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u70ba\u60a8\u7684\u6578\u64da\u5eab\u63d0\u4f9b\u7a69\u5b9a\u7684\u904b\u884c\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL\u512a\u5316\u7684\u4e94\u500b\u95dc\u9375\u7dad\u5ea6\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\uff0c\u8b93\u4f60\u7684\u61c9\u7528\u904b\u884c\u66f4\u6d41\u66a2\uff0c\u4f60\u5b78\u6703\u4e86\u55ce\uff1f<\/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-77356","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/77356","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=77356"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/77356\/revisions"}],"predecessor-version":[{"id":77357,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/77356\/revisions\/77357"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=77356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=77356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=77356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}