{"id":153791,"date":"2024-11-02T10:23:18","date_gmt":"2024-11-02T02:23:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/153791\/"},"modified":"2024-11-02T10:23:19","modified_gmt":"2024-11-02T02:23:19","slug":"%e5%b8%b6%e6%82%a8%e6%b7%b1%e5%85%a5%e4%ba%86%e8%a7%a3mysql%e5%a4%96%e9%83%a8%e9%8e%96%e5%ae%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/153791\/","title":{"rendered":"\u5e36\u60a8\u6df1\u5165\u4e86\u89e3Mysql\u5916\u90e8\u9396\u5b9a"},"content":{"rendered":"<h1 id=\"%e5%b8%b6%e6%82%a8%e6%b7%b1%e5%85%a5%e4%ba%86%e8%a7%a3mysql%e5%a4%96%e9%83%a8%e9%8e%96%e5%ae%9a-ajpzXcZLyO\">\u5e36\u60a8\u6df1\u5165\u4e86\u89e3MySQL\u5916\u90e8\u9396\u5b9a<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u9396\u5b9a\u662f\u4e00\u500b\u81f3\u95dc\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5c24\u5176\u662f\u5728\u591a\u7528\u6236\u74b0\u5883\u4e2d\u3002MySQL\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u9396\u5b9a\u6a5f\u5236\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMySQL\u4e2d\u7684\u5916\u90e8\u9396\u5b9a\uff0c\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7406\u89e3\u5176\u5de5\u4f5c\u539f\u7406\u53ca\u61c9\u7528\u5834\u666f\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%a4%96%e9%83%a8%e9%8e%96%e5%ae%9a%ef%bc%9f-ajpzXcZLyO\">\u4ec0\u9ebc\u662f\u5916\u90e8\u9396\u5b9a\uff1f<\/h2>\n<p>\u5916\u90e8\u9396\u5b9a\uff08External Locking\uff09\u662f\u6307\u5728\u6578\u64da\u5eab\u7cfb\u7d71\u5916\u90e8\u9032\u884c\u7684\u9396\u5b9a\u64cd\u4f5c\uff0c\u901a\u5e38\u7528\u65bc\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\u3002\u5728MySQL\u4e2d\uff0c\u5916\u90e8\u9396\u5b9a\u4e3b\u8981\u7528\u65bc\u9632\u6b62\u591a\u500b\u7528\u6236\u540c\u6642\u5c0d\u540c\u4e00\u6578\u64da\u9032\u884c\u4fee\u6539\uff0c\u5f9e\u800c\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u60c5\u6cc1\u767c\u751f\u3002<\/p>\n<h2 id=\"%e5%a4%96%e9%83%a8%e9%8e%96%e5%ae%9a%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86-ajpzXcZLyO\">\u5916\u90e8\u9396\u5b9a\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>\u5916\u90e8\u9396\u5b9a\u7684\u5de5\u4f5c\u539f\u7406\u4e3b\u8981\u4f9d\u8cf4\u65bc\u64cd\u4f5c\u7cfb\u7d71\u7684\u9396\u5b9a\u6a5f\u5236\u3002\u7576\u4e00\u500b\u7528\u6236\u9700\u8981\u5c0d\u6578\u64da\u9032\u884c\u4fee\u6539\u6642\uff0c\u7cfb\u7d71\u6703\u9996\u5148\u6aa2\u67e5\u8a72\u6578\u64da\u662f\u5426\u88ab\u5176\u4ed6\u7528\u6236\u9396\u5b9a\u3002\u5982\u679c\u672a\u88ab\u9396\u5b9a\uff0c\u5247\u8a72\u7528\u6236\u53ef\u4ee5\u7372\u5f97\u9396\u5b9a\u4e26\u9032\u884c\u64cd\u4f5c\uff1b\u5982\u679c\u5df2\u88ab\u9396\u5b9a\uff0c\u5247\u8a72\u7528\u6236\u9700\u8981\u7b49\u5f85\uff0c\u76f4\u5230\u9396\u5b9a\u88ab\u91cb\u653e\u3002<\/p>\n<h3 id=\"%e5%a4%96%e9%83%a8%e9%8e%96%e5%ae%9a%e7%9a%84%e9%a1%9e%e5%9e%8b-ajpzXcZLyO\">\u5916\u90e8\u9396\u5b9a\u7684\u985e\u578b<\/h3>\n<ul>\n<li><strong>\u5171\u4eab\u9396\uff08Shared Lock\uff09<\/strong>: \u5141\u8a31\u591a\u500b\u7528\u6236\u540c\u6642\u8b80\u53d6\u6578\u64da\uff0c\u4f46\u4e0d\u5141\u8a31\u4efb\u4f55\u7528\u6236\u4fee\u6539\u6578\u64da\u3002<\/li>\n<li><strong>\u6392\u4ed6\u9396\uff08Exclusive Lock\uff09<\/strong>: \u53ea\u5141\u8a31\u4e00\u500b\u7528\u6236\u5c0d\u6578\u64da\u9032\u884c\u8b80\u53d6\u548c\u4fee\u6539\uff0c\u5176\u4ed6\u7528\u6236\u7121\u6cd5\u8a2a\u554f\u8a72\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a4%96%e9%83%a8%e9%8e%96%e5%ae%9a%e7%9a%84%e5%af%a6%e7%8f%be-ajpzXcZLyO\">\u5916\u90e8\u9396\u5b9a\u7684\u5be6\u73fe<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u5916\u90e8\u9396\u5b9a\u901a\u5e38\u901a\u904e\u4f7f\u7528\u7279\u5b9a\u7684SQL\u8a9e\u53e5\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528\u6392\u4ed6\u9396\u4f86\u4fdd\u8b77\u6578\u64da\uff1a<\/p>\n<pre><code>START TRANSACTION;\nSELECT * FROM your_table WHERE id = 1 FOR UPDATE;\n-- \u5728\u6b64\u9032\u884c\u6578\u64da\u4fee\u6539\nUPDATE your_table SET column_name = 'new_value' WHERE id = 1;\nCOMMIT;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u4f7f\u7528\u4e86<code>FOR UPDATE<\/code>\u8a9e\u53e5\u4f86\u7372\u53d6\u6392\u4ed6\u9396\uff0c\u78ba\u4fdd\u5728\u4e8b\u52d9\u5b8c\u6210\u4e4b\u524d\uff0c\u5176\u4ed6\u7528\u6236\u7121\u6cd5\u5c0d\u8a72\u884c\u6578\u64da\u9032\u884c\u4fee\u6539\u3002<\/p>\n<h2 id=\"%e5%a4%96%e9%83%a8%e9%8e%96%e5%ae%9a%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-ajpzXcZLyO\">\u5916\u90e8\u9396\u5b9a\u7684\u512a\u7f3a\u9ede<\/h2>\n<h3 id=\"%e5%84%aa%e9%bb%9e-ajpzXcZLyO\">\u512a\u9ede<\/h3>\n<ul>\n<li>\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\uff1a\u5916\u90e8\u9396\u5b9a\u53ef\u4ee5\u6709\u6548\u9632\u6b62\u6578\u64da\u5728\u591a\u7528\u6236\u74b0\u5883\u4e2d\u7684\u4e0d\u4e00\u81f4\u6027\u3002<\/li>\n<li>\u9748\u6d3b\u6027\uff1a\u7528\u6236\u53ef\u4ee5\u6839\u64da\u9700\u8981\u9078\u64c7\u4e0d\u540c\u985e\u578b\u7684\u9396\u5b9a\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%bc%ba%e9%bb%9e-ajpzXcZLyO\">\u7f3a\u9ede<\/h3>\n<ul>\n<li>\u6027\u80fd\u5f71\u97ff\uff1a\u9396\u5b9a\u53ef\u80fd\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\uff0c\u7279\u5225\u662f\u5728\u9ad8\u4e26\u767c\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n<li>\u6b7b\u9396\u98a8\u96aa\uff1a\u4e0d\u7576\u7684\u9396\u5b9a\u7ba1\u7406\u53ef\u80fd\u5c0e\u81f4\u6b7b\u9396\uff0c\u5f71\u97ff\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-ajpzXcZLyO\">\u7d50\u8ad6<\/h2>\n<p>\u5916\u90e8\u9396\u5b9a\u5728MySQL\u4e2d\u662f\u4e00\u500b\u91cd\u8981\u7684\u6a5f\u5236\uff0c\u7528\u65bc\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528\u5171\u4eab\u9396\u548c\u6392\u4ed6\u9396\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u591a\u7528\u6236\u74b0\u5883\u4e2d\u7684\u6578\u64da\u8a2a\u554f\u3002\u7136\u800c\uff0c\u4f7f\u7528\u5916\u90e8\u9396\u5b9a\u6642\u4e5f\u9700\u8b39\u614e\uff0c\u4ee5\u907f\u514d\u6027\u80fd\u554f\u984c\u548c\u6b7b\u9396\u60c5\u6cc1\u7684\u767c\u751f\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u6216\u5176\u4ed6\u6280\u8853\u554f\u984c\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u9084\u662f\u5176\u4ed6 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u63d0\u4f9b\u5c08\u696d\u7684\u652f\u6301\u548c\u5e6b\u52a9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u4e86\u89e3MySQL\u5916\u90e8\u9396\u5b9a\u7684\u6982\u5ff5\u3001\u985e\u578b\u53ca\u5176\u5c0d\u6578\u64da\u5eab\u6027\u80fd\u7684\u5f71\u97ff\uff0c\u52a9\u60a8\u512a\u5316\u6578\u64da\u7ba1\u7406\u7b56\u7565\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-153791","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153791","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=153791"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153791\/revisions"}],"predecessor-version":[{"id":153792,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153791\/revisions\/153792"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=153791"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=153791"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=153791"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}