{"id":186714,"date":"2024-11-11T08:13:40","date_gmt":"2024-11-11T00:13:40","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186714\/"},"modified":"2024-11-11T08:13:41","modified_gmt":"2024-11-11T00:13:41","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%98%e9%8c%84%e9%8e%96%ef%bc%9a%e4%bf%9d%e8%ad%b7%e6%95%b8%e6%93%9a%e5%ae%89%e5%85%a8-%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%98%e9%8c%84%e9%8e%96%e5%ae%9a%e4%bf%a1%e6%81%af","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186714\/","title":{"rendered":"\u6578\u64da\u5eab\u8a18\u9304\u9396\uff1a\u4fdd\u8b77\u6578\u64da\u5b89\u5168 (\u6578\u64da\u5eab\u8a18\u9304\u9396\u5b9a\u4fe1\u606f)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%98%e9%8c%84%e9%8e%96%ef%bc%9a%e4%bf%9d%e8%ad%b7%e6%95%b8%e6%93%9a%e5%ae%89%e5%85%a8-HsYqQSNTHr\">\u6578\u64da\u5eab\u8a18\u9304\u9396\uff1a\u4fdd\u8b77\u6578\u64da\u5b89\u5168<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u81f3\u95dc\u91cd\u8981\u3002\u6578\u64da\u5eab\u8a18\u9304\u9396\uff08Record Locking\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u4fdd\u8b77\u6578\u64da\u5b89\u5168\u7684\u6280\u8853\uff0c\u80fd\u5920\u9632\u6b62\u6578\u64da\u5728\u591a\u500b\u7528\u6236\u6216\u9032\u7a0b\u540c\u6642\u8a2a\u554f\u6642\u51fa\u73fe\u885d\u7a81\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u6578\u64da\u5eab\u8a18\u9304\u9396\u7684\u6982\u5ff5\u3001\u985e\u578b\u53ca\u5176\u5728\u6578\u64da\u5b89\u5168\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n<h2 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id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%98%e9%8c%84%e9%8e%96%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86-HsYqQSNTHr\">\u6578\u64da\u5eab\u8a18\u9304\u9396\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>\u7576\u4e00\u500b\u7528\u6236\u5617\u8a66\u8a2a\u554f\u6578\u64da\u5eab\u4e2d\u7684\u8a18\u9304\u6642\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u6703\u6aa2\u67e5\u8a72\u8a18\u9304\u7684\u9396\u5b9a\u72c0\u614b\u3002\u5982\u679c\u8a72\u8a18\u9304\u5df2\u88ab\u9396\u5b9a\uff0c\u5247\u7528\u6236\u5c07\u6839\u64da\u9396\u7684\u985e\u578b\u88ab\u5141\u8a31\u6216\u62d2\u7d55\u8a2a\u554f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5728 SQL \u4e2d\u4f7f\u7528\u9396\u5b9a\uff1a<\/p>\n<pre><code>-- \u5171\u4eab\u9396\u793a\u4f8b\nBEGIN TRANSACTION;\nSELECT * FROM users WITH (HOLDLOCK) WHERE user_id = 1;\n\n-- \u6392\u4ed6\u9396\u793a\u4f8b\nBEGIN TRANSACTION;\nUPDATE users SET last_login = GETDATE() WHERE user_id = 1;\nCOMMIT;<\/code><\/pre>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%98%e9%8c%84%e9%8e%96%e7%9a%84%e5%84%aa%e5%8b%a2-HsYqQSNTHr\">\u6578\u64da\u5eab\u8a18\u9304\u9396\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u6578\u64da\u4e00\u81f4\u6027\uff1a<\/strong>\u901a\u904e\u9396\u5b9a\u6a5f\u5236\uff0c\u6578\u64da\u5eab\u80fd\u5920\u78ba\u4fdd\u5728\u591a\u7528\u6236\u74b0\u5883\u4e2d\u6578\u64da\u7684\u4e00\u81f4\u6027\uff0c\u907f\u514d\u6578\u64da\u885d\u7a81\u3002<\/li>\n<li><strong>\u6578\u64da\u5b8c\u6574\u6027\uff1a<\/strong>\u9396\u5b9a\u53ef\u4ee5\u9632\u6b62\u4e0d\u7576\u7684\u6578\u64da\u4fee\u6539\uff0c\u5f9e\u800c\u4fdd\u8b77\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u6027\u80fd\uff1a<\/strong>\u9069\u7576\u7684\u9396\u5b9a\u7b56\u7565\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u6e1b\u5c11\u56e0\u6578\u64da\u885d\u7a81\u800c\u5c0e\u81f4\u7684\u91cd\u8a66\u6b21\u6578\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%98%e9%8c%84%e9%8e%96%e7%9a%84%e6%8c%91%e6%88%b0-HsYqQSNTHr\">\u6578\u64da\u5eab\u8a18\u9304\u9396\u7684\u6311\u6230<\/h2>\n<p>\u5118\u7ba1\u6578\u64da\u5eab\u8a18\u9304\u9396\u5177\u6709\u591a\u7a2e\u512a\u52e2\uff0c\u4f46\u4e5f\u5b58\u5728\u4e00\u4e9b\u6311\u6230\u3002\u4f8b\u5982\uff0c\u904e\u5ea6\u9396\u5b9a\u53ef\u80fd\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\uff0c\u56e0\u70ba\u5176\u4ed6\u7528\u6236\u9700\u8981\u7b49\u5f85\u9396\u91cb\u653e\u3002\u6b64\u5916\uff0c\u6b7b\u9396\uff08Deadlock\uff09\u554f\u984c\u4e5f\u53ef\u80fd\u51fa\u73fe\uff0c\u9019\u662f\u6307\u5169\u500b\u6216\u591a\u500b\u9032\u7a0b\u4e92\u76f8\u7b49\u5f85\u5c0d\u65b9\u91cb\u653e\u9396\uff0c\u5c0e\u81f4\u7cfb\u7d71\u7121\u6cd5\u7e7c\u7e8c\u57f7\u884c\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-HsYqQSNTHr\">\u7d50\u8ad6<\/h2>\n<p>\u6578\u64da\u5eab\u8a18\u9304\u9396\u662f\u4e00\u7a2e\u91cd\u8981\u7684\u6280\u8853\uff0c\u80fd\u5920\u6709\u6548\u4fdd\u8b77\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u3002\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u7cfb\u7d71\u6642\uff0c\u5408\u7406\u4f7f\u7528\u9396\u5b9a\u6a5f\u5236\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u9632\u6b62\u6578\u64da\u885d\u7a81\u7684\u95dc\u9375\u3002\u96a8\u8457\u6578\u64da\u5eab\u6280\u8853\u7684\u767c\u5c55\uff0c\u5c0d\u65bc\u9396\u5b9a\u7b56\u7565\u7684\u7406\u89e3\u548c\u61c9\u7528\u5c07\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/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>\u4e86\u89e3\u6578\u64da\u5eab\u8a18\u9304\u9396\u7684\u529f\u80fd\uff0c\u5982\u4f55\u6709\u6548\u4fdd\u8b77\u6578\u64da\u5b89\u5168\uff0c\u9632\u6b62\u672a\u6388\u6b0a\u8a2a\u554f\u548c\u6578\u64da\u640d\u58de\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-186714","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186714","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=186714"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186714\/revisions"}],"predecessor-version":[{"id":186715,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186714\/revisions\/186715"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=186714"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=186714"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=186714"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}