{"id":168033,"date":"2024-11-06T08:57:23","date_gmt":"2024-11-06T00:57:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168033\/"},"modified":"2024-11-06T08:57:25","modified_gmt":"2024-11-06T00:57:25","slug":"%e8%81%8a%e4%b8%80%e8%81%8amysql%e7%9a%84%e5%85%b1%e4%ba%ab%e9%8e%96%e5%92%8c%e7%8d%a8%e5%8d%a0%e9%8e%96","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168033\/","title":{"rendered":"\u804a\u4e00\u804aMySQL\u7684\u5171\u4eab\u9396\u548c\u7368\u5360\u9396"},"content":{"rendered":"<h1 id=\"%e8%81%8a%e4%b8%80%e8%81%8amysql%e7%9a%84%e5%85%b1%e4%ba%ab%e9%8e%96%e5%92%8c%e7%8d%a8%e5%8d%a0%e9%8e%96-hdaZGjkvgY\">\u804a\u4e00\u804aMySQL\u7684\u5171\u4eab\u9396\u548c\u7368\u5360\u9396<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u9396\u7684\u4f7f\u7528\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u7684\u91cd\u8981\u6a5f\u5236\u3002MySQL\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u9396\u7684\u985e\u578b\uff0c\u5176\u4e2d\u6700\u5e38\u898b\u7684\u5c31\u662f\u5171\u4eab\u9396\u548c\u7368\u5360\u9396\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u5169\u7a2e\u9396\u7684\u7279\u6027\u3001\u4f7f\u7528\u5834\u666f\u53ca\u5176\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%85%b1%e4%ba%ab%e9%8e%96%ef%bc%9f-hdaZGjkvgY\">\u4ec0\u9ebc\u662f\u5171\u4eab\u9396\uff1f<\/h2>\n<p>\u5171\u4eab\u9396\uff08Shared Lock\uff09\u5141\u8a31\u591a\u500b\u4e8b\u52d9\u540c\u6642\u8b80\u53d6\u540c\u4e00\u8cc7\u6e90\uff0c\u4f46\u4e0d\u5141\u8a31\u4efb\u4f55\u4e8b\u52d9\u5c0d\u8a72\u8cc7\u6e90\u9032\u884c\u4fee\u6539\u3002\u9019\u610f\u5473\u8457\u5728\u4e00\u500b\u4e8b\u52d9\u6301\u6709\u5171\u4eab\u9396\u7684\u60c5\u6cc1\u4e0b\uff0c\u5176\u4ed6\u4e8b\u52d9\u4ecd\u7136\u53ef\u4ee5\u7372\u5f97\u5171\u4eab\u9396\u4f86\u8b80\u53d6\u8a72\u8cc7\u6e90\uff0c\u4f46\u7121\u6cd5\u7372\u5f97\u7368\u5360\u9396\u4f86\u9032\u884c\u5beb\u5165\u64cd\u4f5c\u3002<\/p>\n<h3 id=\"%e5%85%b1%e4%ba%ab%e9%8e%96%e7%9a%84%e7%89%b9%e6%80%a7-hdaZGjkvgY\">\u5171\u4eab\u9396\u7684\u7279\u6027<\/h3>\n<ul>\n<li>\u5141\u8a31\u591a\u500b\u4e8b\u52d9\u540c\u6642\u8b80\u53d6\u6578\u64da\u3002<\/li>\n<li>\u4e0d\u5141\u8a31\u5c0d\u6578\u64da\u9032\u884c\u4fee\u6539\uff0c\u76f4\u5230\u6240\u6709\u5171\u4eab\u9396\u88ab\u91cb\u653e\u3002<\/li>\n<li>\u9069\u5408\u65bc\u9700\u8981\u8b80\u53d6\u4f46\u4e0d\u9700\u8981\u4fee\u6539\u6578\u64da\u7684\u5834\u666f\u3002<\/li>\n<\/ul>\n<h3 id=\"%e5%85%b1%e4%ba%ab%e9%8e%96%e7%9a%84%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-hdaZGjkvgY\">\u5171\u4eab\u9396\u7684\u4f7f\u7528\u7bc4\u4f8b<\/h3>\n<pre><code>START TRANSACTION;\nSELECT * FROM users WHERE id = 1 LOCK IN SHARE MODE;\n-- \u5176\u4ed6\u4e8b\u52d9\u53ef\u4ee5\u540c\u6642\u8b80\u53d6users\u8868\uff0c\u4f46\u4e0d\u80fd\u4fee\u6539\nCOMMIT;<\/code><\/pre>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%8d%a8%e5%8d%a0%e9%8e%96%ef%bc%9f-hdaZGjkvgY\">\u4ec0\u9ebc\u662f\u7368\u5360\u9396\uff1f<\/h2>\n<p>\u7368\u5360\u9396\uff08Exclusive Lock\uff09\u5247\u662f\u5c0d\u8cc7\u6e90\u7684\u5b8c\u5168\u63a7\u5236\uff0c\u53ea\u6709\u6301\u6709\u8a72\u9396\u7684\u4e8b\u52d9\u53ef\u4ee5\u8b80\u53d6\u6216\u4fee\u6539\u8a72\u8cc7\u6e90\u3002\u7576\u4e00\u500b\u4e8b\u52d9\u7372\u5f97\u7368\u5360\u9396\u5f8c\uff0c\u5176\u4ed6\u4e8b\u52d9\u7121\u6cd5\u7372\u5f97\u4efb\u4f55\u985e\u578b\u7684\u9396\uff0c\u76f4\u5230\u8a72\u7368\u5360\u9396\u88ab\u91cb\u653e\u3002<\/p>\n<h3 id=\"%e7%8d%a8%e5%8d%a0%e9%8e%96%e7%9a%84%e7%89%b9%e6%80%a7-hdaZGjkvgY\">\u7368\u5360\u9396\u7684\u7279\u6027<\/h3>\n<ul>\n<li>\u53ea\u5141\u8a31\u4e00\u500b\u4e8b\u52d9\u5c0d\u6578\u64da\u9032\u884c\u8b80\u53d6\u6216\u4fee\u6539\u3002<\/li>\n<li>\u5176\u4ed6\u4e8b\u52d9\u5728\u7372\u5f97\u7368\u5360\u9396\u4e4b\u524d\u5fc5\u9808\u7b49\u5f85\u3002<\/li>\n<li>\u9069\u5408\u65bc\u9700\u8981\u4fee\u6539\u6578\u64da\u7684\u5834\u666f\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%8d%a8%e5%8d%a0%e9%8e%96%e7%9a%84%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-hdaZGjkvgY\">\u7368\u5360\u9396\u7684\u4f7f\u7528\u7bc4\u4f8b<\/h3>\n<pre><code>START TRANSACTION;\nUPDATE users SET name = 'John' WHERE id = 1;\n-- \u5176\u4ed6\u4e8b\u52d9\u7121\u6cd5\u8b80\u53d6\u6216\u4fee\u6539users\u8868\nCOMMIT;<\/code><\/pre>\n<h2 id=\"%e5%85%b1%e4%ba%ab%e9%8e%96%e8%88%87%e7%8d%a8%e5%8d%a0%e9%8e%96%e7%9a%84%e6%af%94%e8%bc%83-hdaZGjkvgY\">\u5171\u4eab\u9396\u8207\u7368\u5360\u9396\u7684\u6bd4\u8f03<\/h2>\n<p>\u5171\u4eab\u9396\u548c\u7368\u5360\u9396\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u626e\u6f14\u8457\u4e0d\u540c\u7684\u89d2\u8272\u3002\u5171\u4eab\u9396\u9069\u5408\u65bc\u8b80\u53d6\u64cd\u4f5c\uff0c\u800c\u7368\u5360\u9396\u5247\u9069\u5408\u65bc\u5beb\u5165\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u5b83\u5011\u7684\u4e3b\u8981\u5340\u5225\uff1a<\/p>\n<table>\n<tr>\n<th>\u7279\u6027<\/th>\n<th>\u5171\u4eab\u9396<\/th>\n<th>\u7368\u5360\u9396<\/th>\n<\/tr>\n<tr>\n<td>\u5141\u8a31\u7684\u64cd\u4f5c<\/td>\n<td>\u8b80\u53d6<\/td>\n<td>\u8b80\u53d6\u548c\u5beb\u5165<\/td>\n<\/tr>\n<tr>\n<td>\u540c\u6642\u4e8b\u52d9\u6578\u91cf<\/td>\n<td>\u591a\u500b<\/td>\n<td>\u55ae\u500b<\/td>\n<\/tr>\n<tr>\n<td>\u5c0d\u5176\u4ed6\u4e8b\u52d9\u7684\u5f71\u97ff<\/td>\n<td>\u4e0d\u5f71\u97ff\u5176\u4ed6\u5171\u4eab\u9396<\/td>\n<td>\u963b\u6b62\u6240\u6709\u5176\u4ed6\u9396<\/td>\n<\/tr>\n<\/table>\n<h2 id=\"%e7%b5%90%e8%ab%96-hdaZGjkvgY\">\u7d50\u8ad6<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u7406\u89e3\u5171\u4eab\u9396\u548c\u7368\u5360\u9396\u7684\u904b\u4f5c\u65b9\u5f0f\u5c0d\u65bc\u8a2d\u8a08\u9ad8\u6548\u7684\u6578\u64da\u5eab\u61c9\u7528\u81f3\u95dc\u91cd\u8981\u3002\u9078\u64c7\u5408\u9069\u7684\u9396\u985e\u578b\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u4e26\u767c\u6027\uff0c\u4e26\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u7121\u8ad6\u662f\u9032\u884c\u8b80\u53d6\u9084\u662f\u5beb\u5165\u64cd\u4f5c\uff0c\u5408\u7406\u4f7f\u7528\u9019\u4e9b\u9396\u90fd\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7ba1\u7406\u6578\u64da\u5eab\u8cc7\u6e90\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u6216\u8005\u9700\u8981\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u8a0eMySQL\u4e2d\u7684\u5171\u4eab\u9396\u8207\u7368\u5360\u9396\uff0c\u4e86\u89e3\u5b83\u5011\u7684\u529f\u80fd\u3001\u4f7f\u7528\u5834\u666f\u53ca\u5c0d\u6578\u64da\u4e00\u81f4\u6027\u7684\u5f71\u97ff\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-168033","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168033","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=168033"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168033\/revisions"}],"predecessor-version":[{"id":168034,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168033\/revisions\/168034"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=168033"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=168033"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=168033"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}