{"id":187204,"date":"2024-11-11T12:19:18","date_gmt":"2024-11-11T04:19:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187204\/"},"modified":"2024-11-11T12:19:19","modified_gmt":"2024-11-11T04:19:19","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%ba%8b%e5%8b%99%e7%b3%bb%e5%88%97%ef%bc%8dmysql%e8%b7%a8%e8%a1%8c%e4%ba%8b%e5%8b%99%e6%a8%a1%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187204\/","title":{"rendered":"\u6578\u64da\u5eab\u4e8b\u52d9\u7cfb\u5217\uff0dMySQL\u8de8\u884c\u4e8b\u52d9\u6a21\u578b"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%ba%8b%e5%8b%99%e7%b3%bb%e5%88%97%ef%bc%8dmysql%e8%b7%a8%e8%a1%8c%e4%ba%8b%e5%8b%99%e6%a8%a1%e5%9e%8b-gxJRqPKliq\">\u6578\u64da\u5eab\u4e8b\u52d9\u7cfb\u5217\uff0dMySQL\u8de8\u884c\u4e8b\u52d9\u6a21\u578b<\/h1>\n<p>\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5f0f\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4e8b\u52d9\u7ba1\u7406\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002MySQL\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u4e8b\u52d9\u652f\u6301\uff0c\u7279\u5225\u662f\u5728\u8de8\u884c\u4e8b\u52d9\u6a21\u578b\u65b9\u9762\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMySQL\u7684\u8de8\u884c\u4e8b\u52d9\u6a21\u578b\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\uff0c\u4ee5\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u9019\u4e00\u6982\u5ff5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e4%ba%8b%e5%8b%99%ef%bc%9f-gxJRqPKliq\">\u4ec0\u9ebc\u662f\u4e8b\u52d9\uff1f<\/h2>\n<p>\u4e8b\u52d9\u662f\u4e00\u7d44\u64cd\u4f5c\u7684\u96c6\u5408\uff0c\u9019\u4e9b\u64cd\u4f5c\u8981\u9ebc\u5168\u90e8\u6210\u529f\uff0c\u8981\u9ebc\u5168\u90e8\u5931\u6557\u3002\u9019\u4e00\u7279\u6027\u88ab\u7a31\u70ba\u539f\u5b50\u6027\uff08Atomicity\uff09\u3002\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u4e8b\u52d9\u901a\u5e38\u6d89\u53ca\u591a\u500bSQL\u8a9e\u53e5\u7684\u57f7\u884c\uff0c\u9019\u4e9b\u8a9e\u53e5\u5fc5\u9808\u5728\u4e00\u500b\u908f\u8f2f\u55ae\u5143\u4e2d\u5b8c\u6210\u3002MySQL\u652f\u6301ACID\uff08\u539f\u5b50\u6027\u3001\u4e00\u81f4\u6027\u3001\u9694\u96e2\u6027\u3001\u6301\u4e45\u6027\uff09\u7279\u6027\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u53ef\u9760\u6027\u3002<\/p>\n<h2 id=\"%e8%b7%a8%e8%a1%8c%e4%ba%8b%e5%8b%99%e6%a8%a1%e5%9e%8b%e7%9a%84%e6%a6%82%e5%bf%b5-gxJRqPKliq\">\u8de8\u884c\u4e8b\u52d9\u6a21\u578b\u7684\u6982\u5ff5<\/h2>\n<p>\u8de8\u884c\u4e8b\u52d9\u6a21\u578b\u662f\u6307\u5728\u4e00\u500b\u4e8b\u52d9\u4e2d\u5c0d\u591a\u500b\u884c\u9032\u884c\u64cd\u4f5c\u7684\u80fd\u529b\u3002\u9019\u5728\u8655\u7406\u8907\u96dc\u7684\u6578\u64da\u66f4\u65b0\u6642\u5c24\u70ba\u91cd\u8981\uff0c\u4f8b\u5982\u5728\u96fb\u5b50\u5546\u52d9\u5e73\u53f0\u4e2d\uff0c\u7576\u7528\u6236\u4e0b\u55ae\u6642\uff0c\u53ef\u80fd\u9700\u8981\u540c\u6642\u66f4\u65b0\u591a\u500b\u8868\u683c\u4e2d\u7684\u591a\u884c\u6578\u64da\u3002MySQL\u901a\u904e\u4f7f\u7528\u4e8b\u52d9\u4f86\u78ba\u4fdd\u9019\u4e9b\u64cd\u4f5c\u7684\u5b8c\u6574\u6027\u3002<\/p>\n<h3 id=\"mysql%e4%b8%ad%e7%9a%84%e4%ba%8b%e5%8b%99%e6%94%af%e6%8c%81-gxJRqPKliq\">MySQL\u4e2d\u7684\u4e8b\u52d9\u652f\u6301<\/h3>\n<p>MySQL\u652f\u6301\u4e8b\u52d9\u7684\u5b58\u5132\u5f15\u64ce\u4e3b\u8981\u662fInnoDB\u3002InnoDB\u63d0\u4f9b\u4e86\u884c\u7d1a\u9396\u5b9a\uff0c\u9019\u4f7f\u5f97\u8de8\u884c\u4e8b\u52d9\u7684\u57f7\u884c\u66f4\u52a0\u9ad8\u6548\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684\u4e8b\u52d9\u64cd\u4f5c\uff1a<\/p>\n<pre><code>START TRANSACTION;  -- \u958b\u59cb\u4e8b\u52d9\nUPDATE products SET stock = stock - 1 WHERE product_id = 1;  -- \u66f4\u65b0\u7522\u54c1\u5eab\u5b58\nUPDATE orders SET status = 'confirmed' WHERE order_id = 123;  -- \u66f4\u65b0\u8a02\u55ae\u72c0\u614b\nCOMMIT;  -- \u63d0\u4ea4\u4e8b\u52d9\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u555f\u52d5\u4e00\u500b\u4e8b\u52d9\uff0c\u7136\u5f8c\u5c0d\u5169\u500b\u4e0d\u540c\u7684\u8868\u9032\u884c\u66f4\u65b0\u64cd\u4f5c\uff0c\u6700\u5f8c\u63d0\u4ea4\u4e8b\u52d9\u3002\u5982\u679c\u5728\u57f7\u884c\u904e\u7a0b\u4e2d\u51fa\u73fe\u932f\u8aa4\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528ROLLBACK\u547d\u4ee4\u4f86\u64a4\u92b7\u6240\u6709\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e8%b7%a8%e8%a1%8c%e4%ba%8b%e5%8b%99%e7%9a%84%e6%8c%91%e6%88%b0-gxJRqPKliq\">\u8de8\u884c\u4e8b\u52d9\u7684\u6311\u6230<\/h2>\n<p>\u5118\u7ba1MySQL\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u4e8b\u52d9\u652f\u6301\uff0c\u4f46\u5728\u5be6\u73fe\u8de8\u884c\u4e8b\u52d9\u6642\u4ecd\u7136\u9762\u81e8\u4e00\u4e9b\u6311\u6230\u3002\u4f8b\u5982\uff0c\u6b7b\u9396\u662f\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\uff0c\u7576\u5169\u500b\u6216\u591a\u500b\u4e8b\u52d9\u76f8\u4e92\u7b49\u5f85\u5c0d\u65b9\u91cb\u653e\u9396\u6642\uff0c\u5c31\u6703\u767c\u751f\u6b7b\u9396\u3002\u70ba\u4e86\u907f\u514d\u6b7b\u9396\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u63aa\u65bd\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u4e8b\u52d9\u7684\u57f7\u884c\u9806\u5e8f\u4e00\u81f4\u3002<\/li>\n<li>\u4f7f\u7528\u8f03\u77ed\u7684\u4e8b\u52d9\uff0c\u6e1b\u5c11\u9396\u7684\u6301\u6709\u6642\u9593\u3002<\/li>\n<li>\u5b9a\u671f\u6aa2\u67e5\u548c\u8655\u7406\u6b7b\u9396\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e6%a1%88%e4%be%8b-gxJRqPKliq\">\u5be6\u969b\u61c9\u7528\u6848\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u7c21\u55ae\u7684\u96fb\u5b50\u5546\u52d9\u7cfb\u7d71\uff0c\u7576\u7528\u6236\u4e0b\u55ae\u6642\uff0c\u6211\u5011\u9700\u8981\u540c\u6642\u66f4\u65b0\u7522\u54c1\u5eab\u5b58\u548c\u8a02\u55ae\u72c0\u614b\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>START TRANSACTION;\n\n-- \u6aa2\u67e5\u5eab\u5b58\nSELECT stock FROM products WHERE product_id = 1 FOR UPDATE;\n\n-- \u5047\u8a2d\u5eab\u5b58\u8db3\u5920\nUPDATE products SET stock = stock - 1 WHERE product_id = 1;\nUPDATE orders SET status = 'confirmed' WHERE order_id = 123;\n\nCOMMIT;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u9996\u5148\u6aa2\u67e5\u7522\u54c1\u7684\u5eab\u5b58\uff0c\u7136\u5f8c\u9032\u884c\u66f4\u65b0\u64cd\u4f5c\u3002\u4f7f\u7528FOR UPDATE\u8a9e\u53e5\u53ef\u4ee5\u9396\u5b9a\u9078\u4e2d\u7684\u884c\uff0c\u9632\u6b62\u5176\u4ed6\u4e8b\u52d9\u540c\u6642\u4fee\u6539\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-gxJRqPKliq\">\u7d50\u8ad6<\/h2>\n<p>MySQL\u7684\u8de8\u884c\u4e8b\u52d9\u6a21\u578b\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u5de5\u5177\u4f86\u7ba1\u7406\u8907\u96dc\u7684\u6578\u64da\u64cd\u4f5c\u3002\u901a\u904e\u6b63\u78ba\u4f7f\u7528\u4e8b\u52d9\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\uff0c\u5f9e\u800c\u63d0\u9ad8\u61c9\u7528\u7a0b\u5f0f\u7684\u53ef\u9760\u6027\u3002\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u7406\u89e3\u548c\u61c9\u5c0d\u8de8\u884c\u4e8b\u52d9\u7684\u6311\u6230\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u6578\u64da\u5eab\u548c\u4f3a\u670d\u5668\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\uff0c\u6211\u5011\u63d0\u4f9b\u5404\u7a2e <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u5e6b\u52a9\u60a8\u69cb\u5efa\u7a69\u5b9a\u7684\u61c9\u7528\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL\u8de8\u884c\u4e8b\u52d9\u6a21\u578b\uff0c\u4e86\u89e3\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u6709\u6548\u7ba1\u7406\u548c\u8655\u7406\u591a\u884c\u4e8b\u52d9\uff0c\u63d0\u5347\u6578\u64da\u4e00\u81f4\u6027\u8207\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-187204","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187204","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=187204"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187204\/revisions"}],"predecessor-version":[{"id":187205,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187204\/revisions\/187205"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187204"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187204"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}