{"id":74577,"date":"2024-10-15T22:37:29","date_gmt":"2024-10-15T14:37:29","guid":{"rendered":"https:\/\/server.hk\/cnblog\/74577\/"},"modified":"2024-10-15T22:37:29","modified_gmt":"2024-10-15T14:37:29","slug":"mysql-mvcc%e5%af%a6%e7%8f%be%e5%8e%9f%e7%90%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/74577\/","title":{"rendered":"MySQL MVCC\u5be6\u73fe\u539f\u7406"},"content":{"rendered":"<h1 id=\"mysql-mvcc%e5%af%a6%e7%8f%be%e5%8e%9f%e7%90%86-rVCVZOmDMN\">MySQL MVCC\u5be6\u73fe\u539f\u7406<\/h1>\n<p>\u5728\u73fe\u4ee3\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cMySQL\u4ee5\u5176\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u80fd\u529b\u800c\u805e\u540d\u3002\u5176\u4e2d\uff0cMVCC\uff08\u591a\u7248\u672c\u4e26\u767c\u63a7\u5236\uff09\u662fMySQL\u7528\u4f86\u5be6\u73fe\u9ad8\u6548\u4e26\u767c\u8655\u7406\u7684\u4e00\u7a2e\u6280\u8853\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMySQL MVCC\u7684\u5be6\u73fe\u539f\u7406\u53ca\u5176\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n<h2 id=\"mvcc%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-rVCVZOmDMN\">MVCC\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>MVCC\u7684\u5168\u540d\u662f\u591a\u7248\u672c\u4e26\u767c\u63a7\u5236\uff0c\u5b83\u5141\u8a31\u591a\u500b\u7528\u6236\u540c\u6642\u8b80\u53d6\u548c\u5beb\u5165\u6578\u64da\uff0c\u800c\u4e0d\u6703\u76f8\u4e92\u5e72\u64fe\u3002\u9019\u7a2e\u6280\u8853\u7684\u6838\u5fc3\u5728\u65bc\u6bcf\u6b21\u6578\u64da\u7684\u4fee\u6539\u90fd\u6703\u751f\u6210\u4e00\u500b\u65b0\u7684\u7248\u672c\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u8986\u84cb\u539f\u6709\u6578\u64da\u3002\u9019\u6a23\uff0c\u8b80\u53d6\u64cd\u4f5c\u53ef\u4ee5\u5728\u4e0d\u9396\u5b9a\u6578\u64da\u7684\u60c5\u6cc1\u4e0b\u9032\u884c\uff0c\u5f9e\u800c\u63d0\u9ad8\u4e86\u7cfb\u7d71\u7684\u4e26\u767c\u6027\u80fd\u3002<\/p>\n<h2 id=\"mysql%e4%b8%ad%e7%9a%84mvcc%e5%af%a6%e7%8f%be-rVCVZOmDMN\">MySQL\u4e2d\u7684MVCC\u5be6\u73fe<\/h2>\n<p>\u5728MySQL\u4e2d\uff0cMVCC\u4e3b\u8981\u901a\u904e\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\u4f86\u5be6\u73fe\uff1a<\/p>\n<ul>\n<li><strong>\u7248\u672c\u865f<\/strong>\uff1a\u6bcf\u7576\u4e00\u689d\u8a18\u9304\u88ab\u4fee\u6539\u6642\uff0cMySQL\u6703\u70ba\u5176\u5206\u914d\u4e00\u500b\u65b0\u7684\u7248\u672c\u865f\u3002\u9019\u500b\u7248\u672c\u865f\u901a\u5e38\u662f\u4e8b\u52d9\u7684ID\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6bcf\u500b\u7248\u672c\u90fd\u662f\u552f\u4e00\u7684\u3002<\/li>\n<li><strong>\u96b1\u85cf\u5217<\/strong>\uff1aMySQL\u5728\u6bcf\u689d\u8a18\u9304\u4e2d\u6703\u96b1\u85cf\u5169\u500b\u984d\u5916\u7684\u5217\uff0c\u5206\u5225\u7528\u4f86\u5b58\u5132\u8a72\u8a18\u9304\u7684\u5275\u5efa\u7248\u672c\u548c\u522a\u9664\u7248\u672c\u3002\u9019\u6a23\uff0c\u7576\u4e00\u500b\u4e8b\u52d9\u67e5\u8a62\u6578\u64da\u6642\uff0c\u7cfb\u7d71\u53ef\u4ee5\u6839\u64da\u4e8b\u52d9\u7684\u7248\u672c\u865f\u4f86\u5224\u65b7\u54ea\u4e9b\u6578\u64da\u662f\u53ef\u898b\u7684\u3002<\/li>\n<li><strong>\u5feb\u7167\u8b80\u53d6<\/strong>\uff1a\u7576\u4e00\u500b\u4e8b\u52d9\u958b\u59cb\u6642\uff0c\u5b83\u6703\u7372\u53d6\u4e00\u500b\u5feb\u7167\uff0c\u9019\u500b\u5feb\u7167\u5305\u542b\u4e86\u7576\u524d\u53ef\u898b\u7684\u6578\u64da\u7248\u672c\u3002\u9019\u6a23\uff0c\u5373\u4f7f\u5176\u4ed6\u4e8b\u52d9\u5728\u9032\u884c\u5beb\u5165\u64cd\u4f5c\uff0c\u8a72\u4e8b\u52d9\u4ecd\u7136\u53ef\u4ee5\u57fa\u65bc\u5feb\u7167\u9032\u884c\u8b80\u53d6\uff0c\u5f9e\u800c\u907f\u514d\u4e86\u8b80\u53d6\u6642\u7684\u9396\u5b9a\u3002<\/li>\n<\/ul>\n<h2 id=\"mvcc%e7%9a%84%e5%b7%a5%e4%bd%9c%e6%b5%81%e7%a8%8b-rVCVZOmDMN\">MVCC\u7684\u5de5\u4f5c\u6d41\u7a0b<\/h2>\n<p>\u4ee5\u4e0b\u662fMVCC\u5728MySQL\u4e2d\u5de5\u4f5c\u7684\u57fa\u672c\u6d41\u7a0b\uff1a<\/p>\n<pre><code>\n1. \u7576\u4e00\u500b\u4e8b\u52d9\u958b\u59cb\u6642\uff0c\u7cfb\u7d71\u6703\u8a18\u9304\u4e0b\u8a72\u4e8b\u52d9\u7684\u7248\u672c\u865f\u3002\n2. \u7576\u4e8b\u52d9\u57f7\u884c\u8b80\u53d6\u64cd\u4f5c\u6642\uff0c\u7cfb\u7d71\u6703\u6839\u64da\u4e8b\u52d9\u7684\u7248\u672c\u865f\u67e5\u627e\u53ef\u898b\u7684\u6578\u64da\u7248\u672c\u3002\n3. \u7576\u4e8b\u52d9\u57f7\u884c\u5beb\u5165\u64cd\u4f5c\u6642\uff0c\u7cfb\u7d71\u6703\u5275\u5efa\u4e00\u500b\u65b0\u7684\u6578\u64da\u7248\u672c\uff0c\u4e26\u66f4\u65b0\u96b1\u85cf\u5217\u4e2d\u7684\u7248\u672c\u865f\u3002\n4. \u7576\u4e8b\u52d9\u63d0\u4ea4\u6642\uff0c\u65b0\u7684\u6578\u64da\u7248\u672c\u6703\u88ab\u6a19\u8a18\u70ba\u53ef\u898b\uff0c\u5176\u4ed6\u4e8b\u52d9\u5c07\u80fd\u5920\u770b\u5230\u9019\u500b\u7248\u672c\u3002\n5. \u7576\u4e8b\u52d9\u56de\u6efe\u6642\uff0c\u7cfb\u7d71\u6703\u5c07\u6578\u64da\u6062\u5fa9\u5230\u4e4b\u524d\u7684\u72c0\u614b\uff0c\u4e26\u522a\u9664\u65b0\u5275\u5efa\u7684\u7248\u672c\u3002\n<\/code><\/pre>\n<h2 id=\"mvcc%e7%9a%84%e5%84%aa%e5%8b%a2-rVCVZOmDMN\">MVCC\u7684\u512a\u52e2<\/h2>\n<p>MVCC\u5728MySQL\u4e2d\u7684\u61c9\u7528\u5e36\u4f86\u4e86\u591a\u500b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u63d0\u9ad8\u4e26\u767c\u6027<\/strong>\uff1a\u7531\u65bc\u8b80\u53d6\u64cd\u4f5c\u4e0d\u9700\u8981\u9396\u5b9a\u6578\u64da\uff0c\u9019\u4f7f\u5f97\u591a\u500b\u4e8b\u52d9\u53ef\u4ee5\u540c\u6642\u9032\u884c\uff0c\u5f9e\u800c\u63d0\u9ad8\u4e86\u7cfb\u7d71\u7684\u6574\u9ad4\u6027\u80fd\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u6b7b\u9396<\/strong>\uff1aMVCC\u7684\u8a2d\u8a08\u4f7f\u5f97\u8b80\u53d6\u548c\u5beb\u5165\u64cd\u4f5c\u4e4b\u9593\u7684\u885d\u7a81\u6e1b\u5c11\uff0c\u5f9e\u800c\u964d\u4f4e\u4e86\u6b7b\u9396\u7684\u53ef\u80fd\u6027\u3002<\/li>\n<li><strong>\u5feb\u7167\u9694\u96e2<\/strong>\uff1aMVCC\u63d0\u4f9b\u4e86\u4e00\u7a2e\u5feb\u7167\u9694\u96e2\u7684\u6a5f\u5236\uff0c\u9019\u4f7f\u5f97\u4e8b\u52d9\u80fd\u5920\u5728\u4e0d\u5f71\u97ff\u5176\u4ed6\u4e8b\u52d9\u7684\u60c5\u6cc1\u4e0b\u9032\u884c\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-rVCVZOmDMN\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u7684MVCC\u6280\u8853\u662f\u5176\u9ad8\u6548\u4e26\u767c\u63a7\u5236\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\uff0c\u901a\u904e\u7248\u672c\u7ba1\u7406\u548c\u5feb\u7167\u8b80\u53d6\u7b49\u6a5f\u5236\uff0c\u5be6\u73fe\u4e86\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u80fd\u529b\u3002\u9019\u4f7f\u5f97MySQL\u5728\u8655\u7406\u5927\u91cf\u4e26\u767c\u8acb\u6c42\u6642\uff0c\u80fd\u5920\u4fdd\u6301\u826f\u597d\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\u5834\u666f\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> 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