{"id":190100,"date":"2024-11-12T09:46:22","date_gmt":"2024-11-12T01:46:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/190100\/"},"modified":"2024-11-12T09:46:24","modified_gmt":"2024-11-12T01:46:24","slug":"%e8%90%ac%e5%ad%97%e4%b9%be%e8%b2%a8%e7%b8%bd%e7%b5%90%ef%bc%9amysql%e5%84%aa%e5%8c%96%e5%8e%9f%e7%90%86%e5%ad%b8%e7%bf%92%ef%bc%8c%e9%80%99%e4%b8%80%e7%af%87%e5%b0%b1%e5%a4%a0%e4%ba%86%ef%bc%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/190100\/","title":{"rendered":"\u842c\u5b57\u4e7e\u8ca8\u7e3d\u7d50\uff1aMySQL\u512a\u5316\u539f\u7406\u5b78\u7fd2\uff0c\u9019\u4e00\u7bc7\u5c31\u5920\u4e86\uff01"},"content":{"rendered":"<h1 id=\"%e8%90%ac%e5%ad%97%e4%b9%be%e8%b2%a8%e7%b8%bd%e7%b5%90%ef%bc%9amysql%e5%84%aa%e5%8c%96%e5%8e%9f%e7%90%86%e5%ad%b8%e7%bf%92%ef%bc%8c%e9%80%99%e4%b8%80%e7%af%87%e5%b0%b1%e5%a4%a0%e4%ba%86%ef%bc%81-yrEkEcchnU\">\u842c\u5b57\u4e7e\u8ca8\u7e3d\u7d50\uff1aMySQL\u512a\u5316\u539f\u7406\u5b78\u7fd2\uff0c\u9019\u4e00\u7bc7\u5c31\u5920\u4e86\uff01<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cMySQL\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u95dc\u4fc2\u578b\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\u6027\u80fd\u6210\u70ba\u4e86\u958b\u767c\u8005\u548c\u7cfb\u7d71\u7ba1\u7406\u54e1\u9762\u81e8\u7684\u91cd\u8981\u6311\u6230\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMySQL\u7684\u512a\u5316\u539f\u7406\uff0c\u5e6b\u52a9\u8b80\u8005\u638c\u63e1\u95dc\u9375\u6280\u8853\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"1-%e7%90%86%e8%a7%a3mysql%e7%9a%84%e6%9e%b6%e6%a7%8b-yrEkEcchnU\">1. \u7406\u89e3MySQL\u7684\u67b6\u69cb<\/h2>\n<p>\u5728\u9032\u884cMySQL\u512a\u5316\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3\u5176\u57fa\u672c\u67b6\u69cb\u3002MySQL\u7684\u67b6\u69cb\u4e3b\u8981\u7531\u4ee5\u4e0b\u5e7e\u500b\u90e8\u5206\u7d44\u6210\uff1a<\/p>\n<ul>\n<li><strong>\u5ba2\u6236\u7aef<\/strong>\uff1a\u7528\u6236\u901a\u904e\u5ba2\u6236\u7aef\u767c\u9001\u67e5\u8a62\u8acb\u6c42\u3002<\/li>\n<li><strong>\u67e5\u8a62\u89e3\u6790\u5668<\/strong>\uff1a\u89e3\u6790SQL\u8a9e\u53e5\u4e26\u751f\u6210\u57f7\u884c\u8a08\u5283\u3002<\/li>\n<li><strong>\u512a\u5316\u5668<\/strong>\uff1a\u6839\u64da\u7d71\u8a08\u4fe1\u606f\u9078\u64c7\u6700\u4f73\u7684\u57f7\u884c\u8a08\u5283\u3002<\/li>\n<li><strong>\u57f7\u884c\u5f15\u64ce<\/strong>\uff1a\u8ca0\u8cac\u57f7\u884c\u67e5\u8a62\u4e26\u8fd4\u56de\u7d50\u679c\u3002<\/li>\n<li><strong>\u5b58\u5132\u5f15\u64ce<\/strong>\uff1a\u8ca0\u8cac\u6578\u64da\u7684\u5be6\u969b\u5b58\u5132\u548c\u6aa2\u7d22\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e6%9f%a5%e8%a9%a2%e5%84%aa%e5%8c%96-yrEkEcchnU\">2. \u67e5\u8a62\u512a\u5316<\/h2>\n<p>\u67e5\u8a62\u512a\u5316\u662fMySQL\u6027\u80fd\u8abf\u512a\u7684\u6838\u5fc3\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u67e5\u8a62\u512a\u5316\u6280\u5de7\uff1a<\/p>\n<h3 id=\"2-1-%e4%bd%bf%e7%94%a8%e7%b4%a2%e5%bc%95-yrEkEcchnU\">2.1 \u4f7f\u7528\u7d22\u5f15<\/h3>\n<p>\u7d22\u5f15\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u901a\u904e\u5728\u8868\u7684\u5217\u4e0a\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u52a0\u901f\u6578\u64da\u6aa2\u7d22\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>CREATE INDEX idx_name ON users(name);<\/code><\/pre>\n<p>\u7136\u800c\uff0c\u904e\u591a\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u5beb\u5165\u6027\u80fd\uff0c\u56e0\u6b64\u9700\u8981\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u9032\u884c\u5e73\u8861\u3002<\/p>\n<h3 id=\"2-2-%e9%81%bf%e5%85%8dselect-yrEkEcchnU\">2.2 \u907f\u514dSELECT *<\/h3>\n<p>\u4f7f\u7528SELECT *\u6703\u5c0e\u81f4\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u50b3\u8f38\uff0c\u61c9\u8a72\u660e\u78ba\u6307\u5b9a\u9700\u8981\u7684\u5217\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT name, email FROM users WHERE id = 1;<\/code><\/pre>\n<h3 id=\"2-3-%e4%bd%bf%e7%94%a8join%e8%80%8c%e9%9d%9e%e5%ad%90%e6%9f%a5%e8%a9%a2-yrEkEcchnU\">2.3 \u4f7f\u7528JOIN\u800c\u975e\u5b50\u67e5\u8a62<\/h3>\n<p>\u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528JOIN\u6bd4\u5b50\u67e5\u8a62\u66f4\u9ad8\u6548\u3002\u4ee5\u4e0b\u662f\u4e00\u500bJOIN\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT u.name, o.amount \nFROM users u \nJOIN orders o ON u.id = o.user_id;<\/code><\/pre>\n<h2 id=\"3-%e9%85%8d%e7%bd%ae%e5%84%aa%e5%8c%96-yrEkEcchnU\">3. \u914d\u7f6e\u512a\u5316<\/h2>\n<p>MySQL\u7684\u914d\u7f6e\u5c0d\u6027\u80fd\u5f71\u97ff\u6df1\u9060\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u95dc\u9375\u914d\u7f6e\u9805\uff1a<\/p>\n<h3 id=\"3-1-%e8%aa%bf%e6%95%b4%e7%b7%a9%e8%a1%9d%e5%8d%80%e5%a4%a7%e5%b0%8f-yrEkEcchnU\">3.1 \u8abf\u6574\u7de9\u885d\u5340\u5927\u5c0f<\/h3>\n<p>\u9069\u7576\u8abf\u6574InnoDB Buffer Pool\u7684\u5927\u5c0f\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u4e00\u822c\u5efa\u8b70\u5c07\u5176\u8a2d\u7f6e\u70ba\u53ef\u7528\u5167\u5b58\u768470%-80%\u3002<\/p>\n<pre><code>SET GLOBAL innodb_buffer_pool_size = 2 * 1024 * 1024 * 1024; -- 2GB<\/code><\/pre>\n<h3 id=\"3-2-%e8%aa%bf%e6%95%b4%e9%80%a3%e6%8e%a5%e6%95%b8%e9%87%8f-yrEkEcchnU\">3.2 \u8abf\u6574\u9023\u63a5\u6578\u91cf<\/h3>\n<p>\u6839\u64da\u61c9\u7528\u9700\u6c42\u8abf\u6574max_connections\u53c3\u6578\uff0c\u4ee5\u907f\u514d\u904e\u591a\u7684\u9023\u63a5\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n<pre><code>SET GLOBAL max_connections = 200;<\/code><\/pre>\n<h2 id=\"4-%e7%9b%a3%e6%8e%a7%e8%88%87%e5%88%86%e6%9e%90-yrEkEcchnU\">4. \u76e3\u63a7\u8207\u5206\u6790<\/h2>\n<p>\u6301\u7e8c\u76e3\u63a7MySQL\u6027\u80fd\u662f\u512a\u5316\u7684\u95dc\u9375\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u5de5\u5177\u9032\u884c\u6027\u80fd\u5206\u6790\uff1a<\/p>\n<ul>\n<li><strong>MySQL EXPLAIN<\/strong>\uff1a\u5206\u6790\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\u3002<\/li>\n<li><strong>\u6162\u67e5\u8a62\u65e5\u8a8c<\/strong>\uff1a\u8a18\u9304\u57f7\u884c\u6642\u9593\u8d85\u904e\u6307\u5b9a\u6642\u9593\u7684\u67e5\u8a62\u3002<\/li>\n<li><strong>\u6027\u80fd\u6a21\u5f0f<\/strong>\uff1a\u63d0\u4f9b\u8a73\u7d30\u7684\u6027\u80fd\u6307\u6a19\u548c\u7d71\u8a08\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<h2 id=\"5-%e7%b8%bd%e7%b5%90-yrEkEcchnU\">5. \u7e3d\u7d50<\/h2>\n<p>MySQL\u7684\u512a\u5316\u662f\u4e00\u500b\u7d9c\u5408\u6027\u7684\u904e\u7a0b\uff0c\u6d89\u53ca\u67e5\u8a62\u512a\u5316\u3001\u914d\u7f6e\u8abf\u6574\u548c\u6027\u80fd\u76e3\u63a7\u7b49\u591a\u500b\u65b9\u9762\u3002\u901a\u904e\u7406\u89e3MySQL\u7684\u67b6\u69cb\u3001\u638c\u63e1\u67e5\u8a62\u512a\u5316\u6280\u5de7\u3001\u5408\u7406\u914d\u7f6e\u53c3\u6578\u4ee5\u53ca\u6301\u7e8c\u76e3\u63a7\u6027\u80fd\uff0c\u958b\u767c\u8005\u548c\u7cfb\u7d71\u7ba1\u7406\u54e1\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684MySQL\u6578\u64da\u5eab\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u548c\u512a\u5316\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0eMySQL\u512a\u5316\u539f\u7406\uff0c\u63d0\u4f9b\u5168\u9762\u7684\u4e7e\u8ca8\u7e3d\u7d50\uff0c\u52a9\u4f60\u5feb\u901f\u638c\u63e1\u95dc\u9375\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\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-190100","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/190100","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=190100"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/190100\/revisions"}],"predecessor-version":[{"id":190101,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/190100\/revisions\/190101"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=190100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=190100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=190100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}