{"id":186190,"date":"2024-11-11T03:51:25","date_gmt":"2024-11-10T19:51:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186190\/"},"modified":"2024-11-11T03:51:26","modified_gmt":"2024-11-10T19:51:26","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%a6%e7%99%bc%e6%8e%a7%e5%88%b6%e4%bd%a0%e9%81%b8%e6%a8%82%e8%a7%80%e9%8e%96%e9%82%84%e6%98%af%e6%82%b2%e8%a7%80%e9%8e%96%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186190\/","title":{"rendered":"\u6578\u64da\u5eab\u4e26\u767c\u63a7\u5236\u4f60\u9078\u6a02\u89c0\u9396\u9084\u662f\u60b2\u89c0\u9396\uff1f"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%a6%e7%99%bc%e6%8e%a7%e5%88%b6%ef%bc%9a%e4%bd%a0%e9%81%b8%e6%93%87%e6%a8%82%e8%a7%80%e9%8e%96%e9%82%84%e6%98%af%e6%82%b2%e8%a7%80%e9%8e%96%ef%bc%9f-usGhAsGWZu\">\u6578\u64da\u5eab\u4e26\u767c\u63a7\u5236\uff1a\u4f60\u9078\u64c7\u6a02\u89c0\u9396\u9084\u662f\u60b2\u89c0\u9396\uff1f<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4e26\u767c\u63a7\u5236\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u7684\u91cd\u8981\u6280\u8853\u3002\u96a8\u8457\u591a\u7528\u6236\u74b0\u5883\u7684\u666e\u53ca\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u7684\u4e26\u767c\u8a2a\u554f\u6210\u70ba\u4e86\u958b\u767c\u8005\u548c\u7cfb\u7d71\u67b6\u69cb\u5e2b\u9762\u81e8\u7684\u4e00\u5927\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5169\u7a2e\u4e3b\u8981\u7684\u4e26\u767c\u63a7\u5236\u6a5f\u5236\uff1a\u6a02\u89c0\u9396\u548c\u60b2\u89c0\u9396\uff0c\u4e26\u5206\u6790\u5b83\u5011\u5404\u81ea\u7684\u512a\u7f3a\u9ede\u53ca\u9069\u7528\u5834\u666f\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%a8%82%e8%a7%80%e9%8e%96%ef%bc%9f-usGhAsGWZu\">\u4ec0\u9ebc\u662f\u6a02\u89c0\u9396\uff1f<\/h2>\n<p>\u6a02\u89c0\u9396\u662f\u4e00\u7a2e\u5047\u8a2d\u6578\u64da\u885d\u7a81\u4e0d\u6703\u767c\u751f\u7684\u4e26\u767c\u63a7\u5236\u7b56\u7565\u3002\u5728\u9019\u7a2e\u7b56\u7565\u4e0b\uff0c\u6578\u64da\u5eab\u5728\u57f7\u884c\u66f4\u65b0\u64cd\u4f5c\u6642\u4e0d\u6703\u7acb\u5373\u9396\u5b9a\u6578\u64da\uff0c\u800c\u662f\u5141\u8a31\u591a\u500b\u4e8b\u52d9\u540c\u6642\u8b80\u53d6\u6578\u64da\u3002\u7576\u4e8b\u52d9\u6e96\u5099\u63d0\u4ea4\u6642\uff0c\u7cfb\u7d71\u6703\u6aa2\u67e5\u5728\u6b64\u671f\u9593\u662f\u5426\u6709\u5176\u4ed6\u4e8b\u52d9\u5c0d\u8a72\u6578\u64da\u9032\u884c\u4e86\u4fee\u6539\u3002\u5982\u679c\u6709\uff0c\u5247\u7576\u524d\u4e8b\u52d9\u5c07\u88ab\u62d2\u7d55\uff0c\u4e26\u9700\u8981\u91cd\u65b0\u57f7\u884c\u3002<\/p>\n<h3 id=\"%e6%a8%82%e8%a7%80%e9%8e%96%e7%9a%84%e5%af%a6%e7%8f%be%e6%96%b9%e5%bc%8f-usGhAsGWZu\">\u6a02\u89c0\u9396\u7684\u5be6\u73fe\u65b9\u5f0f<\/h3>\n<p>\u6a02\u89c0\u9396\u901a\u5e38\u901a\u904e\u7248\u672c\u865f\u6216\u6642\u9593\u6233\u4f86\u5be6\u73fe\u3002\u6bcf\u7576\u6578\u64da\u88ab\u66f4\u65b0\u6642\uff0c\u7248\u672c\u865f\u6703\u81ea\u52d5\u589e\u52a0\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>UPDATE users SET name = '\u65b0\u540d\u5b57', version = version + 1 WHERE id = 1 AND version = 2;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u53ea\u6709\u7576\u7248\u672c\u865f\u70ba2\u6642\uff0c\u66f4\u65b0\u624d\u6703\u6210\u529f\u3002\u5982\u679c\u5728\u6b64\u671f\u9593\u7248\u672c\u865f\u5df2\u7d93\u6539\u8b8a\uff0c\u5247\u66f4\u65b0\u5c07\u5931\u6557\u3002<\/p>\n<h3 id=\"%e6%a8%82%e8%a7%80%e9%8e%96%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-usGhAsGWZu\">\u6a02\u89c0\u9396\u7684\u512a\u7f3a\u9ede<\/h3>\n<ul>\n<li><strong>\u512a\u9ede\uff1a<\/strong>\u9069\u5408\u8b80\u53d6\u64cd\u4f5c\u9060\u591a\u65bc\u5beb\u5165\u64cd\u4f5c\u7684\u5834\u666f\uff0c\u56e0\u70ba\u5b83\u4e0d\u6703\u9396\u5b9a\u6578\u64da\uff0c\u5f9e\u800c\u63d0\u9ad8\u4e86\u7cfb\u7d71\u7684\u4e26\u767c\u6027\u80fd\u3002<\/li>\n<li><strong>\u7f3a\u9ede\uff1a<\/strong>\u5728\u9ad8\u5beb\u5165\u885d\u7a81\u7684\u60c5\u6cc1\u4e0b\uff0c\u4e8b\u52d9\u91cd\u8a66\u7684\u6b21\u6578\u53ef\u80fd\u6703\u589e\u52a0\uff0c\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%82%b2%e8%a7%80%e9%8e%96%ef%bc%9f-usGhAsGWZu\">\u4ec0\u9ebc\u662f\u60b2\u89c0\u9396\uff1f<\/h2>\n<p>\u60b2\u89c0\u9396\u5247\u662f\u76f8\u53cd\u7684\u7b56\u7565\uff0c\u5b83\u5047\u8a2d\u6578\u64da\u885d\u7a81\u6703\u7d93\u5e38\u767c\u751f\uff0c\u56e0\u6b64\u5728\u8b80\u53d6\u6216\u66f4\u65b0\u6578\u64da\u6642\u6703\u7acb\u5373\u9396\u5b9a\u8a72\u6578\u64da\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5728\u4e00\u500b\u4e8b\u52d9\u5b8c\u6210\u4e4b\u524d\uff0c\u5176\u4ed6\u4e8b\u52d9\u7121\u6cd5\u8a2a\u554f\u8a72\u6578\u64da\u3002<\/p>\n<h3 id=\"%e6%82%b2%e8%a7%80%e9%8e%96%e7%9a%84%e5%af%a6%e7%8f%be%e6%96%b9%e5%bc%8f-usGhAsGWZu\">\u60b2\u89c0\u9396\u7684\u5be6\u73fe\u65b9\u5f0f<\/h3>\n<p>\u60b2\u89c0\u9396\u901a\u5e38\u901a\u904e\u6578\u64da\u5eab\u7684\u9396\u5b9a\u6a5f\u5236\u4f86\u5be6\u73fe\uff0c\u4f8b\u5982\u4f7f\u7528 SQL \u7684 <code>SELECT FOR UPDATE<\/code> \u8a9e\u53e5\uff1a<\/p>\n<pre><code>BEGIN;\nSELECT * FROM users WHERE id = 1 FOR UPDATE;\nUPDATE users SET name = '\u65b0\u540d\u5b57' WHERE id = 1;\nCOMMIT;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u7576\u9078\u64c7\u7528\u6236\u6642\uff0c\u8a72\u884c\u6578\u64da\u6703\u88ab\u9396\u5b9a\uff0c\u76f4\u5230\u4e8b\u52d9\u5b8c\u6210\u3002<\/p>\n<h3 id=\"%e6%82%b2%e8%a7%80%e9%8e%96%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-usGhAsGWZu\">\u60b2\u89c0\u9396\u7684\u512a\u7f3a\u9ede<\/h3>\n<ul>\n<li><strong>\u512a\u9ede\uff1a<\/strong>\u9069\u5408\u5beb\u5165\u64cd\u4f5c\u983b\u7e41\u7684\u5834\u666f\uff0c\u56e0\u70ba\u5b83\u80fd\u5920\u6709\u6548\u9632\u6b62\u6578\u64da\u885d\u7a81\u3002<\/li>\n<li><strong>\u7f3a\u9ede\uff1a<\/strong>\u53ef\u80fd\u5c0e\u81f4\u6027\u80fd\u74f6\u9838\uff0c\u7279\u5225\u662f\u5728\u9ad8\u4e26\u767c\u74b0\u5883\u4e2d\uff0c\u56e0\u70ba\u9396\u5b9a\u6703\u963b\u6b62\u5176\u4ed6\u4e8b\u52d9\u8a2a\u554f\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%81%b8%e6%93%87%e6%a8%82%e8%a7%80%e9%8e%96%e9%82%84%e6%98%af%e6%82%b2%e8%a7%80%e9%8e%96%ef%bc%9f-usGhAsGWZu\">\u9078\u64c7\u6a02\u89c0\u9396\u9084\u662f\u60b2\u89c0\u9396\uff1f<\/h2>\n<p>\u9078\u64c7\u6a02\u89c0\u9396\u9084\u662f\u60b2\u89c0\u9396\u53d6\u6c7a\u65bc\u5177\u9ad4\u7684\u61c9\u7528\u5834\u666f\u548c\u9700\u6c42\u3002\u5982\u679c\u7cfb\u7d71\u4e2d\u8b80\u53d6\u64cd\u4f5c\u9060\u591a\u65bc\u5beb\u5165\u64cd\u4f5c\uff0c\u4e14\u6578\u64da\u885d\u7a81\u7684\u53ef\u80fd\u6027\u8f03\u4f4e\uff0c\u5247\u6a02\u89c0\u9396\u53ef\u80fd\u662f\u66f4\u597d\u7684\u9078\u64c7\u3002\u76f8\u53cd\uff0c\u5982\u679c\u5beb\u5165\u64cd\u4f5c\u983b\u7e41\u4e14\u6578\u64da\u885d\u7a81\u7684\u98a8\u96aa\u8f03\u9ad8\uff0c\u5247\u60b2\u89c0\u9396\u53ef\u80fd\u66f4\u70ba\u5408\u9069\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-usGhAsGWZu\">\u7d50\u8ad6<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e26\u767c\u63a7\u5236\u4e2d\uff0c\u6a02\u89c0\u9396\u548c\u60b2\u89c0\u9396\u5404\u6709\u5176\u512a\u7f3a\u9ede\uff0c\u9078\u64c7\u5408\u9069\u7684\u9396\u5b9a\u7b56\u7565\u5c0d\u65bc\u7cfb\u7d71\u6027\u80fd\u548c\u6578\u64da\u4e00\u81f4\u6027\u81f3\u95dc\u91cd\u8981\u3002\u958b\u767c\u8005\u61c9\u6839\u64da\u5177\u9ad4\u7684\u696d\u52d9\u9700\u6c42\u548c\u4f7f\u7528\u5834\u666f\u4f86\u505a\u51fa\u660e\u667a\u7684\u9078\u64c7\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">VPS<\/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>\u63a2\u7d22\u6578\u64da\u5eab\u4e26\u767c\u63a7\u5236\u4e2d\u7684\u6a02\u89c0\u9396\u8207\u60b2\u89c0\u9396\uff0c\u4e86\u89e3\u5404\u81ea\u512a\u7f3a\u9ede\uff0c\u5e6b\u52a9\u4f60\u9078\u64c7\u6700\u9069\u5408\u7684\u89e3\u6c7a\u65b9\u6848\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-186190","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186190","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=186190"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186190\/revisions"}],"predecessor-version":[{"id":186191,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186190\/revisions\/186191"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=186190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=186190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=186190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}