{"id":97082,"date":"2024-04-11T15:19:58","date_gmt":"2024-04-11T07:19:58","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/97082.html"},"modified":"2024-04-11T15:19:59","modified_gmt":"2024-04-11T07:19:59","slug":"%e6%95%b0%e6%8d%ae%e5%ba%93%e5%b9%b6%e5%8f%91%e6%8e%a7%e5%88%b6%e6%8a%80%e6%9c%af%e6%9c%89%e5%93%aa%e4%ba%9b","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/97082.html","title":{"rendered":"\u6570\u636e\u5e93\u5e76\u53d1\u63a7\u5236\u6280\u672f\u6709\u54ea\u4e9b"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/02172812\/04a824d9-4c93-4d7b-9ce1-9a2ca3bde292.webp\" alt=\"\u6570\u636e\u5e93\u5e76\u53d1\u63a7\u5236\u6280\u672f\u6709\u54ea\u4e9b\" \/><\/p>\n<p><p>\u5e76\u53d1\u63a7\u5236\u662f\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08DBMS\uff09\u4fdd\u8bc1\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u8fd0\u884c\u65f6\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u9694\u79bb\u6027\u7684\u673a\u5236\u548c\u6280\u672f\u3002\u4e3b\u8981\u7684\u6570\u636e\u5e93\u5e76\u53d1\u63a7\u5236\u6280\u672f\u5305\u62ec<strong>\u5c01\u9501\uff08Locking\uff09<\/strong>\u3001<strong>\u4e50\u89c2\u5e76\u53d1\u63a7\u5236\uff08Optimistic Concurrency Control, OCC\uff09<\/strong>\u3001<strong>\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\uff08Multiversion Concurrency Control, MVCC\uff09<\/strong>\u3001<strong>\u65f6\u95f4\u6233\u6392\u5e8f\uff08Timestamp Ordering\uff09<\/strong>\u3001\u4ee5\u53ca\u5feb\u7167\u9694\u79bb\uff08Snapshot Isolation\uff09\u7b49\u3002\u5728\u8fd9\u4e9b\u6280\u672f\u4e2d\uff0c<strong>\u5c01\u9501<\/strong>\u662f\u6700\u5e38\u89c1\u7684\u5e76\u53d1\u63a7\u5236\u673a\u5236\uff0c\u5b83\u901a\u8fc7\u5bf9\u6570\u636e\u9879\u52a0\u9501\u6765\u9650\u5236\u4e0d\u540c\u4e8b\u52a1\u5bf9\u6570\u636e\u7684\u5e76\u53d1\u8bbf\u95ee\uff0c\u786e\u4fdd\u5728\u4e00\u4e2a\u65f6\u95f4\u70b9\u53ea\u6709\u4e00\u4e2a\u4e8b\u52a1\u53ef\u4ee5\u5bf9\u6570\u636e\u8fdb\u884c\u5199\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u5c01\u9501\uff08LOCKING\uff09<\/h3>\n<\/p>\n<p><p>\u5c01\u9501\u6280\u672f\u901a\u8fc7\u5bf9\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u9879\u8fdb\u884c\u52a0\u9501\u6765\u63a7\u5236\u5bf9\u6570\u636e\u7684\u5e76\u53d1\u8bbf\u95ee\u3002\u5b83\u4e3b\u8981\u5305\u62ec\u5171\u4eab\u9501\uff08S Lock\uff09\u548c\u6392\u4ed6\u9501\uff08X Lock\uff09\u3002\u5171\u4eab\u9501\u5141\u8bb8\u4e8b\u52a1\u8bfb\u53d6\u4e00\u4e2a\u6570\u636e\u9879\uff0c\u800c\u5f53\u4e8b\u52a1\u60f3\u8981\u4fee\u6539\u6570\u636e\u9879\u65f6\uff0c\u5fc5\u987b\u9996\u5148\u83b7\u5f97\u6392\u4ed6\u9501\u3002\u8fd9\u79cd\u673a\u5236\u786e\u4fdd\u4e86\u4e0d\u4f1a\u6709\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u4fee\u6539\u540c\u4e00\u4e2a\u6570\u636e\u9879\u3002<\/p>\n<\/p>\n<p><p>\u5c01\u9501\u6280\u672f\u4e2d\u91cd\u8981\u7684\u662f\u4e24\u9636\u6bb5\u9501\u5b9a\u534f\u8bae\uff082PL\uff09\uff1a\u4e8b\u52a1\u5728\u7ed3\u675f\u4e4b\u524d\u4e0d\u80fd\u91ca\u653e\u4efb\u4f55\u9501\uff0c\u540c\u65f6\u5728\u83b7\u53d6\u6700\u540e\u4e00\u4e2a\u9501\u540e\uff0c\u4e0d\u518d\u83b7\u5f97\u65b0\u7684\u9501\u3002\u8fd9\u6837\u53ef\u4ee5\u9632\u6b62\u6b7b\u9501\u7684\u4ea7\u751f\uff0c\u5e76\u786e\u4fdd\u4e8b\u52a1\u5e8f\u5217\u5316\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u4e50\u89c2\u5e76\u53d1\u63a7\u5236\uff08OPTIMISTIC CONCURRENCY CONTROL, OCC\uff09<\/h3>\n<\/p>\n<p><p>\u4e50\u89c2\u5e76\u53d1\u63a7\u5236\u662f\u57fa\u4e8e\u8fd9\u6837\u4e00\u4e2a\u5047\u8bbe\uff1a\u51b2\u7a81\u60c5\u5f62\u53d1\u751f\u7684\u6982\u7387\u5f88\u4f4e\uff0c\u56e0\u6b64\u4e8b\u52a1\u53ef\u4ee5\u5728\u6ca1\u6709\u9501\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u3002\u5728\u63d0\u4ea4\u64cd\u4f5c\u524d\uff0c\u4f1a\u8fdb\u884c\u68c0\u67e5\u4ee5\u786e\u4fdd\u81ea\u4e8b\u52a1\u5f00\u59cb\u4ee5\u6765\u6570\u636e\u6ca1\u6709\u88ab\u5176\u4ed6\u4e8b\u52a1\u6240\u66f4\u6539\u3002\u5982\u679c\u68c0\u6d4b\u5230\u51b2\u7a81\uff0c\u5219\u4e8b\u52a1\u56de\u6eda\u5e76\u91cd\u65b0\u5f00\u59cb\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u5408\u8bfb\u64cd\u4f5c\u591a\u4e8e\u5199\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n<p><p>OCC\u901a\u5e38\u6709\u4e09\u4e2a\u9636\u6bb5\uff1a<strong>\u8bfb\u9636\u6bb5<\/strong>\u3001<strong>\u9a8c\u8bc1\u9636\u6bb5<\/strong>\u548c<strong>\u5199\u9636\u6bb5<\/strong>\u3002\u5728\u8bfb\u9636\u6bb5\uff0c\u4e8b\u52a1\u8bb0\u5f55\u6570\u636e\u9879\u7684\u65e7\u7248\u548c\u65b0\u7248\u3002\u9a8c\u8bc1\u9636\u6bb5\u68c0\u67e5\u4e8b\u52a1\u8d77\u59cb\u70b9\u4ee5\u6765\u662f\u5426\u6709\u5176\u4ed6\u4e8b\u52a1\u66f4\u6539\u4e86\u6570\u636e\u9879\u3002\u5982\u679c\u53d1\u73b0\u66f4\u6539\uff0c\u5219\u4e8b\u52a1\u56de\u6eda\u3002\u5426\u5219\uff0c\u5728\u5199\u9636\u6bb5\u66f4\u65b0\u6570\u636e\u5e93\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\uff08MULTIVERSION CONCURRENCY CONTROL, MVCC\uff09<\/h3>\n<\/p>\n<p><p>MVCC\u901a\u8fc7\u4e3a\u6bcf\u4e2a\u4e8b\u52a1\u67e5\u8be2\u7684\u6bcf\u4e2a\u6570\u636e\u9879\u7ef4\u62a4\u591a\u4e2a\u7248\u672c\u6765\u5b9e\u73b0\u5e76\u53d1\u63a7\u5236\u3002\u8fd9\u6837\uff0c\u8bfb\u4e8b\u52a1\u4e0d\u5fc5\u7b49\u5f85\u5199\u4e8b\u52a1\u7684\u5b8c\u6210\uff0c\u4ece\u800c\u53ef\u4ee5\u51cf\u5c11\u7b49\u5f85\u65f6\u95f4\u548c\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd\u3002\u6bcf\u4e2a\u7248\u672c\u90fd\u6709\u4e00\u4e2a\u65f6\u95f4\u6233\uff0c\u4ee5\u786e\u4fdd\u4e8b\u52a1\u770b\u5230\u6709\u6548\u7684\u6570\u636e\u526f\u672c\u3002<\/p>\n<\/p>\n<p><p>\u5728MVCC\u4e2d\uff0c\u5f53\u4e8b\u52a1\u66f4\u65b0\u6570\u636e\u65f6\uff0c\u5e76\u4e0d\u76f4\u63a5\u8986\u5199\u65e7\u6570\u636e\uff0c\u800c\u662f\u521b\u5efa\u4e00\u4e2a\u65b0\u7248\u672c\u3002\u8fd9\u6837\uff0c\u8bfb\u4e8b\u52a1\u53ef\u4ee5\u7ee7\u7eed\u8bbf\u95ee\u65e7\u7248\u672c\u7684\u6570\u636e\uff0c\u786e\u4fdd\u8bfb\u5199\u64cd\u4f5c\u4e4b\u95f4\u7684\u9694\u79bb\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u65f6\u95f4\u6233\u6392\u5e8f\uff08TIMESTAMP ORDERING\uff09<\/h3>\n<\/p>\n<p><p>\u65f6\u95f4\u6233\u6392\u5e8f\u6280\u672f\u4e3a\u6bcf\u4e2a\u4e8b\u52a1\u5206\u914d\u4e00\u4e2a\u552f\u4e00\u7684\u65f6\u95f4\u6233\u3002\u6240\u6709\u6570\u636e\u5e93\u64cd\u4f5c\u90fd\u6839\u636e\u4e8b\u52a1\u7684\u65f6\u95f4\u6233\u6765\u6267\u884c\uff0c\u786e\u4fdd\u6570\u636e\u5e93\u5728\u903b\u8f91\u4e0a\u4e25\u683c\u6309\u4e8b\u52a1\u65f6\u95f4\u6233\u7684\u987a\u5e8f\u5e8f\u5217\u5316\u3002\u5982\u679c\u4e00\u4e2a\u4e8b\u52a1\u5c1d\u8bd5\u665a\u4e8e\u5176\u5b83\u4e8b\u52a1\u800c\u8fdb\u884c\u5199\u64cd\u4f5c\uff0c\u90a3\u4e48\u5b83\u4f1a\u88ab\u56de\u6eda\u3002<\/p>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u6838\u5fc3\u601d\u60f3\u662f\u6839\u636e\u4e8b\u52a1\u5f00\u59cb\u7684\u65f6\u95f4\u6765\u51b3\u5b9a\u4f18\u5148\u7ea7\uff0c\u800c\u4e0d\u662f\u4f9d\u9760\u52a0\u9501\u6216\u8005\u5176\u4ed6\u540c\u6b65\u673a\u5236\u3002<\/p>\n<\/p>\n<p><h3>\u4e94\u3001\u5feb\u7167\u9694\u79bb\uff08SNAPSHOT ISOLATION\uff09<\/h3>\n<\/p>\n<p><p>\u5feb\u7167\u9694\u79bb\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\u673a\u5236\u3002\u5728\u5feb\u7167\u9694\u79bb\u4e0b\uff0c\u4e8b\u52a1\u5728\u5f00\u59cb\u65f6\u83b7\u5f97\u6570\u636e\u5e93\u4e00\u4e2a\u4e00\u81f4\u6027\u7684\u5feb\u7167\u3002\u8fd9\u4e2a\u5feb\u7167\u4fdd\u6301\u4e0d\u53d8\uff0c\u5373\u4f7f\u5176\u4ed6\u4e8b\u52a1\u6b63\u5728\u5e76\u53d1\u5730\u66f4\u65b0\u6570\u636e\u5e93\u3002<\/p>\n<\/p>\n<p><p>\u5feb\u7167\u9694\u79bb\u907f\u514d\u4e86\u957f\u671f\u5c01\u9501\u548c\u8bfb\u53d6\u6570\u636e\u65f6\u7684\u4e0d\u4e00\u81f4\u60c5\u51b5\u3002\u8fd9\u6837\u7684\u9694\u79bb\u7ea7\u522b\u9002\u5408\u62a5\u8868\u548c\u5206\u6790\uff0c\u8fd9\u4e9b\u64cd\u4f5c\u901a\u5e38\u8bfb\u53d6\u5927\u91cf\u6570\u636e\u800c\u4e0d\u671f\u671b\u5b9e\u65f6\u7684\u66f4\u65b0\u3002<\/p>\n<\/p>\n<p><p>\u5e76\u53d1\u63a7\u5236\u6280\u672f\u4fdd\u8bc1\u6570\u636e\u5e93\u7cfb\u7edf\u5728\u5904\u7406\u591a\u4e2a\u5e76\u53d1\u4e8b\u52a1\u65f6\u7684\u6b63\u786e\u6027\u4e0e\u6548\u7387\uff0c\u662f\u6570\u636e\u5e93\u6027\u80fd\u4f18\u5316\u7684\u5173\u952e\u90e8\u5206\u3002\u4e0d\u540c\u7684\u6280\u672f\u9002\u5e94\u4e0d\u540c\u7684\u5e94\u7528\u573a\u666f\uff0c\u5b83\u4eec\u6709\u81ea\u5df1\u7684\u4f18\u52bf\u548c\u9650\u5236\u3002\u6570\u636e\u5e93\u7ba1\u7406\u5458\u6216\u7cfb\u7edf\u8bbe\u8ba1\u5e08\u9700\u8981\u6839\u636e\u5b9e\u9645\u9700\u6c42\uff0c\u9009\u62e9\u6700\u5408\u9002\u7684\u5e76\u53d1\u63a7\u5236\u6280\u672f\u4ee5\u4f18\u5316\u6570\u636e\u5e93\u6027\u80fd\u548c\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. \u4ec0\u4e48\u662f\u6570\u636e\u5e93\u5e76\u53d1\u63a7\u5236\u6280\u672f\uff1f<\/strong><\/p>\n<p>\u6570\u636e\u5e93\u5e76\u53d1\u63a7\u5236\u6280\u672f\u662f\u4e00\u79cd\u7528\u4e8e\u5904\u7406\u591a\u4e2a\u5e76\u53d1\u4e8b\u52a1\u6267\u884c\u65f6\u53ef\u80fd\u51fa\u73b0\u7684\u51b2\u7a81\u548c\u6570\u636e\u4e0d\u4e00\u81f4\u6027\u95ee\u9898\u7684\u65b9\u6cd5\u3002\u5b83\u65e8\u5728\u786e\u4fdd\u591a\u4e2a\u4e8b\u52a1\u53ef\u4ee5\u540c\u65f6\u8bbf\u95ee\u6570\u636e\u5e93\uff0c\u800c\u4e0d\u4f1a\u5bfc\u81f4\u6570\u636e\u635f\u574f\u6216\u4e22\u5931\u3002<\/p>\n<p><strong>2. \u5e38\u89c1\u7684\u6570\u636e\u5e93\u5e76\u53d1\u63a7\u5236\u6280\u672f\u6709\u54ea\u4e9b\uff1f<\/strong><\/p>\n<p>\u5e38\u89c1\u7684\u6570\u636e\u5e93\u5e76\u53d1\u63a7\u5236\u6280\u672f\u5305\u62ec\u9501\u548c\u5e76\u53d1\u63a7\u5236\u7b97\u6cd5\u3002<\/p>\n<ul>\n<li>\u9501\u662f\u4e00\u79cd\u57fa\u672c\u7684\u5e76\u53d1\u63a7\u5236\u6280\u672f\uff0c\u5b83\u901a\u8fc7\u7ed9\u6570\u636e\u8d44\u6e90\u52a0\u9501\uff0c\u9650\u5236\u5176\u4ed6\u4e8b\u52a1\u5bf9\u8be5\u8d44\u6e90\u7684\u8bbf\u95ee\u3002\u5e38\u89c1\u7684\u9501\u5305\u62ec\u5171\u4eab\u9501\u548c\u6392\u4ed6\u9501\u3002<\/li>\n<li>\u5e76\u53d1\u63a7\u5236\u7b97\u6cd5\u662f\u4e00\u79cd\u66f4\u9ad8\u7ea7\u7684\u6280\u672f\uff0c\u7528\u4e8e\u89e3\u51b3\u591a\u4e2a\u4e8b\u52a1\u4e4b\u95f4\u7684\u51b2\u7a81\u548c\u6570\u636e\u4e00\u81f4\u6027\u95ee\u9898\u3002\u5e38\u89c1\u7684\u7b97\u6cd5\u5305\u62ec\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\uff08MVCC\uff09\u3001\u65f6\u95f4\u6233\u6392\u5e8f\uff08Timestamp ordering\uff09\u548c\u57fa\u4e8e\u5feb\u7167\u7684\u5e76\u53d1\u63a7\u5236\uff08Snapshot isolation\uff09\u7b49\u3002<\/li>\n<\/ul>\n<p><strong>3. \u5982\u4f55\u9009\u62e9\u5408\u9002\u7684\u6570\u636e\u5e93\u5e76\u53d1\u63a7\u5236\u6280\u672f\uff1f<\/strong><\/p>\n<p>\u9009\u62e9\u5408\u9002\u7684\u6570\u636e\u5e93\u5e76\u53d1\u63a7\u5236\u6280\u672f\u9700\u8981\u8003\u8651\u591a\u4e2a\u56e0\u7d20\uff0c\u4f8b\u5982\u4e1a\u52a1\u9700\u6c42\u3001\u6570\u636e\u89c4\u6a21\u548c\u7cfb\u7edf\u6027\u80fd\u7b49\u3002<\/p>\n<ul>\n<li>\u5982\u679c\u7cfb\u7edf\u9700\u8981\u8f83\u9ad8\u7684\u5e76\u53d1\u6027\u80fd\uff0c\u53ef\u4ee5\u9009\u62e9\u8f83\u4e3a\u7b80\u5355\u7684\u9501\u673a\u5236\u3002\u5171\u4eab\u9501\u9002\u5408\u8bfb\u591a\u5199\u5c11\u7684\u573a\u666f\uff0c\u800c\u6392\u4ed6\u9501\u9002\u5408\u5199\u591a\u8bfb\u5c11\u7684\u573a\u666f\u3002<\/li>\n<li>\u5982\u679c\u7cfb\u7edf\u5bf9\u6570\u636e\u4e00\u81f4\u6027\u8981\u6c42\u8f83\u9ad8\uff0c\u53ef\u4ee5\u9009\u62e9\u66f4\u9ad8\u7ea7\u7684\u5e76\u53d1\u63a7\u5236\u7b97\u6cd5\u3002MVCC\u53ef\u4ee5\u63d0\u4f9b\u8f83\u597d\u7684\u5e76\u53d1\u6027\u80fd\u548c\u6570\u636e\u4e00\u81f4\u6027\uff0c\u800cSnapshot isolation\u5219\u53ef\u4ee5\u63d0\u4f9b\u66f4\u9ad8\u7684\u9694\u79bb\u6027\u548c\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<p>\u7efc\u5408\u8003\u8651\u4e1a\u52a1\u9700\u6c42\u548c\u7cfb\u7edf\u6027\u80fd\uff0c\u9009\u62e9\u9002\u5408\u7684\u5e76\u53d1\u63a7\u5236\u6280\u672f\u662f\u4fdd\u8bc1\u6570\u636e\u5e93\u5e76\u53d1\u6027\u548c\u6570\u636e\u4e00\u81f4\u6027\u7684\u5173\u952e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5e76\u53d1\u63a7\u5236\u662f\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08DBMS\uff09\u4fdd\u8bc1\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u8fd0\u884c\u65f6\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u9694\u79bb\u6027\u7684\u673a\u5236\u548c\u6280\u672f\u3002\u4e3b\u8981\u7684\u6570\u636e\u5e93\u5e76\u53d1\u63a7 [&hellip;]","protected":false},"author":3,"featured_media":97083,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/97082"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=97082"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/97082\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/97083"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=97082"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=97082"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=97082"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}