{"id":186,"date":"2026-03-12T11:00:28","date_gmt":"2026-03-12T03:00:28","guid":{"rendered":"https:\/\/h537.xyz\/?p=186"},"modified":"2026-03-12T11:00:28","modified_gmt":"2026-03-12T03:00:28","slug":"mysql%e4%b8%ad%e7%9a%84%e9%94%81","status":"publish","type":"post","link":"https:\/\/h537.xyz\/index.php\/2026\/03\/12\/mysql%e4%b8%ad%e7%9a%84%e9%94%81\/","title":{"rendered":"mysql\u4e2d\u7684\u9501"},"content":{"rendered":"\n<p>\u6628\u5929\u63d0\u5230\u4e86\u6570\u636e\u5e93\u7684\u56db\u79cd\u9694\u79bb\u7ea7\u522b\uff0c\u5b83\u7684\u5b9e\u73b0\u79bb\u4e0d\u5f00\u9501\u3002<\/p>\n\n\n\n<p>mysql\u7684\u9501\u6709\u4e09\u5927\u7c7b<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e00\u7c7b\uff1a\u5168\u5c40\u9501<\/h2>\n\n\n\n<p>\u5bf9\u6574\u4e2a\u6570\u636e\u5e93\u5b9e\u4f8b\u52a0\u9501\u3002\u6267\u884c\u540e\uff0c\u6574\u4e2a\u6570\u636e\u5e93\u4f1a\u8fdb\u5165<strong>\u53ea\u8bfb<\/strong>\u72b6\u6001<\/p>\n\n\n\n<p><strong>\u6267\u884c\u6548\u679c<\/strong>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6240\u6709\u5e93\u7684\u6240\u6709\u8868<\/strong>\u90fd\u88ab\u9501\u5b9a<\/li>\n\n\n\n<li>\u53ea\u80fd\u6267\u884c\u67e5\u8be2\uff08SELECT\uff09<\/li>\n\n\n\n<li><strong>\u963b\u585e<\/strong>\u6240\u6709\u66f4\u65b0\u64cd\u4f5c\uff08INSERT\u3001UPDATE\u3001DELETE\uff09\u3001DDL\uff08ALTER\u3001DROP\uff09\u3001\u4e8b\u52a1\u63d0\u4ea4<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u8981\u7528\u5168\u5c40\u9501\uff1f\u573a\u666f\uff1a\u5168\u5e93\u5907\u4efd\uff08\u903b\u8f91\u5907\u4efd\uff09<\/h4>\n\n\n\n<p>\u5168\u5c40\u9501\u7684\u4ee3\u4ef7\u975e\u5e38\u76f4\u63a5\uff1a<strong>\u4e1a\u52a1\u505c\u6446<\/strong>\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u52a0\u9501\u671f\u95f4\uff0c\u6240\u6709\u5199\u5165\u64cd\u4f5c\u90fd\u88ab\u963b\u585e<\/li>\n\n\n\n<li>\u5982\u679c\u662f\u7535\u5546\u7f51\u7ad9\uff0c\u7528\u6237\u65e0\u6cd5\u4e0b\u5355\u3001\u65e0\u6cd5\u652f\u4ed8<\/li>\n\n\n\n<li>\u5982\u679c\u662f\u793e\u4ea4\u5e94\u7528\uff0c\u7528\u6237\u65e0\u6cd5\u53d1\u5e16\u3001\u65e0\u6cd5\u70b9\u8d5e<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e8e\u662f\uff0c\u73b0\u4ee3\u6570\u636e\u5e93\u63d0\u4f9b\u4e86\u66f4\u4f18\u96c5\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/h3>\n\n\n\n<h3 class=\"wp-block-heading\">MySQL \u7684 &#8211;single-transaction \u53c2\u6570<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\">mysqldump --single-transaction --all-databases &gt; backup.sql<\/pre>\n\n\n\n<p><strong>\u539f\u7406<\/strong>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e0d\u542f\u7528\u5168\u5c40\u9501<\/li>\n\n\n\n<li>\u800c\u662f\u542f\u52a8\u4e00\u4e2a<strong>\u53ef\u91cd\u590d\u8bfb\u9694\u79bb\u7ea7\u522b<\/strong>\u7684\u957f\u4e8b\u52a1<\/li>\n\n\n\n<li>\u5229\u7528\u00a0<strong>MVCC \uff08\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\uff09<\/strong>\uff0c\u8bfb\u53d6\u8fd9\u4e2a\u4e8b\u52a1\u5f00\u59cb\u65f6\u7684\u6570\u636e\u5feb\u7167<\/li>\n\n\n\n<li>\u5907\u4efd\u8fc7\u7a0b\u4e2d\uff0c\u4e1a\u52a1\u66f4\u65b0\u53ef\u4ee5\u6b63\u5e38\u8fdb\u884c\uff08\u5199\u64cd\u4f5c\u521b\u5efa\u65b0\u7248\u672c\uff0c\u5907\u4efd\u8bfb\u8001\u7248\u672c\uff09<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e8c\u7c7b\uff1a\u8868\u7ea7\u9501\uff1a<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u8868\u9501<\/h3>\n\n\n\n<p>\u8868\u9501\u6709\u4e24\u79cd<\/p>\n\n\n\n<p><strong>\u8bfb\u9501 \uff08READ\uff09<\/strong>\uff1a\u6240\u6709\u4eba\u90fd\u53ef\u4ee5\u8bfb\uff0c\u4f46\u8c01\u90fd\u4e0d\u80fd\u5199\uff08\u5305\u62ec\u52a0\u9501\u8005\u81ea\u5df1\uff09<\/p>\n\n\n\n<p><strong>\u5199\u9501 \uff08WRITE\uff09<\/strong>\uff1a\u53ea\u6709\u52a0\u9501\u8005\u81ea\u5df1\u80fd\u8bfb\u5199\uff0c\u522b\u4eba\u5565\u90fd\u4e0d\u80fd\u5e72<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5143\u6570\u636e\u9501<\/h3>\n\n\n\n<p>\u662f\u4e00\u79cd<strong>\u81ea\u52a8\u7684\u3001\u9690\u5f0f\u7684<\/strong>\u9501\uff0c\u7528\u6765\u4fdd\u62a4<strong>\u8868\u7ed3\u6784<\/strong>\u4e0d\u88ab\u4fee\u6539\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e24\u79cd\u7c7b\u578b<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u7c7b\u578b<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u52a0\u9501\u65f6\u673a<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u4f5c\u7528<\/th><\/tr><\/thead><tbody><tr><td><strong>MDL\u8bfb\u9501<\/strong>&nbsp;\uff08\u5171\u4eab\uff09<\/td><td>\u6267\u884c SELECT\u3001UPDATE\u3001INSERT \u7b49 DML \u8bed\u53e5\u65f6<\/td><td>\u9632\u6b62\u6267\u884c DML \u65f6\u522b\u4eba\u6539\u8868\u7ed3\u6784<\/td><\/tr><tr><td><strong>MDL\u5199\u9501<\/strong>&nbsp;\uff08\u6392\u4ed6\uff09<\/td><td>\u6267\u884c ALTER\u3001DROP\u3001CREATE \u7b49 DDL \u8bed\u53e5\u65f6<\/td><td>\u9632\u6b62\u6539\u8868\u7ed3\u6784\u65f6\u522b\u4eba\u8fd8\u5728\u8bfb\u5199<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u610f\u5411\u9501<\/h3>\n\n\n\n<p>\u7528\u6765\u5feb\u901f\u5224\u65ad<strong>\u8868\u91cc\u6709\u6ca1\u6709\u884c\u9501<\/strong><\/p>\n\n\n\n<p>\u6ca1\u6709\u65f6<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><em>-- \u6709\u4eba\u8981\u5728 users \u8868\u4e0a\u52a0\u8868\u9501<\/em>\nLOCK TABLES users WRITE\uff1b\n\n<em>-- \u6570\u636e\u5e93\u9700\u8981\u68c0\u67e5\uff1ausers \u8868\u91cc\u6709\u6ca1\u6709\u884c\u88ab\u9501\u4f4f\uff1f<\/em>\n<em>-- \u5fc5\u987b\u626b\u63cf\u6574\u5f20\u8868\u7684\u6240\u6709\u884c\uff0c\u770b\u6709\u6ca1\u6709 X\u9501 \u2192 \u592a\u6162\u4e86\uff01<\/em><\/pre>\n\n\n\n<p>\u6709\u4e86\u4e4b\u540e<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><em>-- \u4e8b\u52a1A\u7ed9\u67d0\u4e00\u884c\u52a0\u884c\u9501\uff08X\u9501\uff09\u65f6\uff0c\u540c\u65f6\u81ea\u52a8\u7ed9 users \u8868\u52a0\u4e00\u4e2a\"\u610f\u5411\u6392\u4ed6\u9501\"<\/em><br><em>-- \u8fd9\u4e2a\u610f\u5411\u9501\u53ea\u662f\u4e00\u4e2a\"\u6807\u5fd7\"\uff0c\u4e0d\u963b\u585e\u4efb\u4f55\u4eba<\/em><br><br><em>-- \u4e8b\u52a1B\u60f3\u52a0\u8868\u9501\u65f6\uff0c\u4e00\u770b users \u8868\u6709\u610f\u5411\u9501\uff0c\u5c31\u77e5\u9053\uff1a\"\u54e6\uff0c\u8868\u91cc\u6709\u884c\u88ab\u9501\u4e86\uff0c\u6211\u5f97\u7b49\u7740\"<\/em><br><em>-- \u4e0d\u7528\u626b\u63cf\u5168\u8868\uff01<\/em><\/pre>\n\n\n\n<h5 class=\"wp-block-heading\">\u6ce8\u610f\uff0c\u5143\u6570\u636e\u9501\u548c\u610f\u5411\u9501\u90fd\u662f\u81ea\u52a8\u52a0\u7684<\/h5>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u884c\u7ea7\u9501<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u884c\u9501<\/h3>\n\n\n\n<p>\u6700\u57fa\u7840\u7684\u9501\uff0c<strong>\u9501\u4f4f\u7d22\u5f15\u4e0a\u7684\u67d0\u4e00\u6761\u8bb0\u5f55<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7279\u70b9<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u9501\u7684\u662f\u7d22\u5f15\uff0c\u4e0d\u662f\u6570\u636e\u884c\u672c\u8eab<\/strong><\/li>\n\n\n\n<li>\u5373\u4f7f\u8868\u6ca1\u6709\u7d22\u5f15\uff0cInnoDB \u4e5f\u4f1a\u521b\u5efa\u9690\u85cf\u7684\u805a\u7c07\u7d22\u5f15<\/li>\n\n\n\n<li>\u6240\u4ee5<strong>\u884c\u9501\u603b\u662f\u9501\u5728\u7d22\u5f15\u4e0a<\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u95f4\u9699\u9501<\/h3>\n\n\n\n<p><strong>\u9501\u4f4f\u4e00\u4e2a\u8303\u56f4\uff0c\u4f46\u4e0d\u9501\u8bb0\u5f55\u672c\u8eab<\/strong>\u3002\u8fd9\u662f InnoDB \u5728\u53ef\u91cd\u590d\u8bfb\u7ea7\u522b\u4e0b\u89e3\u51b3<strong>\u5e7b\u8bfb<\/strong>\u7684\u6b66\u5668\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e34\u952e\u9501<\/h3>\n\n\n\n<p><strong>\u884c\u9501 + \u95f4\u9699\u9501<\/strong>\u7684\u7ec4\u5408\uff0c\u9501\u4f4f&#8221;\u4e00\u4e2a\u533a\u95f4 + \u53f3\u7aef\u70b9&#8221;<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ed3\u8bed<\/h2>\n\n\n\n<p>\u65e2\u7136mysql\u5728\u9009\u62e9\u4e86\u9694\u79bb\u7ea7\u522b\u4e4b\u540e\u4f1a\u81ea\u52a8\u52a0\u9501\uff0c\u90a3\u4e3a\u4ec0\u4e48\u8fd8\u8981\u5b66\u4e60\u6570\u636e\u5e93\u7684\u9501\u5462\uff1f<\/p>\n\n\n\n<p>\u81ea\u52a8\u52a0\u9501\u7684\u7b56\u7565\u662f&#8221;\u4fdd\u5b88\u7684&#8221;\uff0c\u4e86\u89e3\u4e86\u9501\u4e4b\u540e\uff0c<strong>\u53ef\u4ee5\u5728&#8221;\u5b89\u5168&#8221;\u548c&#8221;\u6027\u80fd&#8221;\u4e4b\u95f4\u505a\u6743\u8861<\/strong>\uff0c\u4f46\u81ea\u52a8\u52a0\u9501\u53ea\u4f1a\u9009\u62e9&#8221;\u5b89\u5168&#8221;\u3002<\/p>\n\n\n\n<p>\u540c\u6837\u7684\u4e1a\u52a1\uff0c\u4e0d\u540c\u7684\u8bbe\u8ba1\u3002<strong>\u4e0d\u4e86\u89e3\u9501<\/strong>\uff1a\u88ab\u6570\u636e\u5e93\u7275\u7740\u8d70\uff0c\u95ee\u9898\uff1a\u9ad8\u5e76\u53d1\u4e0b\u6027\u80fd\u5dee\uff0c\u5bb9\u6613\u6b7b\u9501\u3002<strong>\u4e86\u89e3\u9501<\/strong>\uff1a\u4e3b\u52a8\u8bbe\u8ba1<\/p>\n\n\n\n<p>\u4e0d\u4e86\u89e3\u9501\uff0c\u4f60\u662f\u5728<strong>\u4f7f\u7528<\/strong>\u6570\u636e\u5e93\uff1b\u4e86\u89e3\u9501\uff0c\u4f60\u662f\u5728<strong>\u9a7e\u9a6d<\/strong>\u6570\u636e\u5e93\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6628\u5929\u63d0\u5230\u4e86\u6570\u636e\u5e93\u7684\u56db\u79cd\u9694\u79bb\u7ea7\u522b\uff0c\u5b83\u7684\u5b9e\u73b0\u79bb\u4e0d\u5f00\u9501\u3002 mysql\u7684\u9501\u6709\u4e09\u5927\u7c7b \u7b2c\u4e00\u7c7b\uff1a\u5168\u5c40\u9501 \u5bf9\u6574\u4e2a\u6570\u636e\u5e93\u5b9e\u4f8b\u52a0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":191,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-186","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology"],"_links":{"self":[{"href":"https:\/\/h537.xyz\/index.php\/wp-json\/wp\/v2\/posts\/186","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/h537.xyz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/h537.xyz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/h537.xyz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/h537.xyz\/index.php\/wp-json\/wp\/v2\/comments?post=186"}],"version-history":[{"count":4,"href":"https:\/\/h537.xyz\/index.php\/wp-json\/wp\/v2\/posts\/186\/revisions"}],"predecessor-version":[{"id":190,"href":"https:\/\/h537.xyz\/index.php\/wp-json\/wp\/v2\/posts\/186\/revisions\/190"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/h537.xyz\/index.php\/wp-json\/wp\/v2\/media\/191"}],"wp:attachment":[{"href":"https:\/\/h537.xyz\/index.php\/wp-json\/wp\/v2\/media?parent=186"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/h537.xyz\/index.php\/wp-json\/wp\/v2\/categories?post=186"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/h537.xyz\/index.php\/wp-json\/wp\/v2\/tags?post=186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}