{"id":14,"date":"2024-08-16T00:37:21","date_gmt":"2024-08-15T16:37:21","guid":{"rendered":"https:\/\/blog.witshang.com\/?p=14"},"modified":"2024-08-16T03:14:55","modified_gmt":"2024-08-15T19:14:55","slug":"%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3mysql-%e6%95%b0%e6%8d%ae%e5%ba%93%e4%ba%8b%e5%8a%a1%e4%b8%8e%e9%9a%94%e7%a6%bb%e7%ba%a7%e5%88%ab","status":"publish","type":"post","link":"https:\/\/blog.witshang.com\/index.php\/2024\/08\/16\/%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3mysql-%e6%95%b0%e6%8d%ae%e5%ba%93%e4%ba%8b%e5%8a%a1%e4%b8%8e%e9%9a%94%e7%a6%bb%e7%ba%a7%e5%88%ab\/","title":{"rendered":"\u6df1\u5165\u7406\u89e3mysql \u6570\u636e\u5e93\u4e8b\u52a1\u4e0e\u9694\u79bb\u7ea7\u522b"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u4e00. \u4ec0\u4e48\u662f\u4e8b\u52a1<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e8b\u52a1\uff08Transaction\uff09\uff1a\u8bbf\u95ee\u5e76\u53ef\u80fd\u66f4\u65b0\u6570\u636e\u5e93\u4e2d\u5404\u79cd\u6570\u636e\u9879\u7684\u4e00\u4e2a\u7a0b\u5e8f\u6267\u884c\u5355\u5143\uff08unit\uff09\uff0c\u5b83\u901a\u5e38\u7531\u9ad8\u7ea7\u6570\u636e\u5e93\u64cd\u7eb5\u8bed\u8a00\u6216\u7f16\u7a0b\u8bed\u8a00\uff08\u5982SQL\uff0cC++\u6216Java\uff09\u4e66\u5199\u7684\u7528\u6237\u7a0b\u5e8f\u7684\u6267\u884c\u6240\u5f15\u8d77\u3002\u5f53\u5728\u6570\u636e\u5e93\u4e2d\u66f4\u6539\u6570\u636e\u6210\u529f\u65f6\uff0c\u5728\u4e8b\u52a1\u4e2d\u66f4\u6539\u7684\u6570\u636e\u4fbf\u4f1a\u63d0\u4ea4\uff0c\u4e0d\u518d\u6539\u53d8\u3002\u5426\u5219\uff0c\u4e8b\u52a1\u5c31\u53d6\u6d88\u6216\u8005\u56de\u6eda\uff0c\u66f4\u6539\u65e0\u6548<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e8b\u52a1\u7684\u5c5e\u6027<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e8b\u52a1\u5fc5\u987b\u6ee1\u8db3\u56db\u4e2a\u5c5e\u6027\uff0c\u5373\u539f\u5b50\u6027\uff08Atomicity\uff09\u3001\u4e00\u81f4\u6027\uff08Consistency\uff09\u3001\u9694\u79bb\u6027\uff08Isolation\uff09\u3001\u6301\u4e45\u6027\uff08Durability\uff09\uff0c\u5373ACID\u56db\u79cd\u5c5e\u6027<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u539f\u5b50\u6027\uff08Atomicity\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u539f\u5b50\u6027\u662f\u6307\u4e8b\u52a1\u5305\u542b\u7684\u6240\u6709\u64cd\u4f5c\u8981\u4e48\u5168\u90e8\u6210\u529f\uff0c\u8981\u4e48\u5168\u90e8\u5931\u8d25\u56de\u6eda\uff0c\u8fd9\u548c\u524d\u9762\u4e24\u7bc7\u535a\u5ba2\u4ecb\u7ecd\u4e8b\u52a1\u7684\u529f\u80fd\u662f\u4e00\u6837\u7684\u6982\u5ff5\uff0c\u56e0\u6b64\u4e8b\u52a1\u7684\u64cd\u4f5c\u5982\u679c\u6210\u529f\u5c31\u5fc5\u987b\u8981\u5b8c\u5168\u5e94\u7528\u5230\u6570\u636e\u5e93\uff0c\u5982\u679c\u64cd\u4f5c\u5931\u8d25\u5219\u4e0d\u80fd\u5bf9\u6570\u636e\u5e93\u6709\u4efb\u4f55\u5f71\u54cd\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u4e00\u81f4\u6027\uff08Consistency\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u81f4\u6027\u662f\u6307\u4e8b\u52a1\u5fc5\u987b\u4f7f\u6570\u636e\u5e93\u4ece\u4e00\u4e2a\u4e00\u81f4\u6027\u72b6\u6001\u53d8\u6362\u5230\u53e6\u4e00\u4e2a\u4e00\u81f4\u6027\u72b6\u6001\uff0c\u4e5f\u5c31\u662f\u8bf4\u4e00\u4e2a\u4e8b\u52a1\u6267\u884c\u4e4b\u524d\u548c\u6267\u884c\u4e4b\u540e\u90fd\u5fc5\u987b\u5904\u4e8e\u4e00\u81f4\u6027\u72b6\u6001\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u62ff\u8f6c\u8d26\u6765\u8bf4\uff0c\u5047\u8bbe\u7528\u6237A\u548c\u7528\u6237B\u4e24\u8005\u7684\u94b1\u52a0\u8d77\u6765\u4e00\u5171\u662f5000\uff0c\u90a3\u4e48\u4e0d\u7ba1A\u548cB\u4e4b\u95f4\u5982\u4f55\u8f6c\u8d26\uff0c\u8f6c\u51e0\u6b21\u8d26\uff0c\u4e8b\u52a1\u7ed3\u675f\u540e\u4e24\u4e2a\u7528\u6237\u7684\u94b1\u76f8\u52a0\u8d77\u6765\u5e94\u8be5\u8fd8\u5f97\u662f5000\uff0c\u8fd9\u5c31\u662f\u4e8b\u52a1\u7684\u4e00\u81f4\u6027\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u9694\u79bb\u6027\uff08Isolation\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9694\u79bb\u6027\u662f\u5f53\u591a\u4e2a\u7528\u6237\u5e76\u53d1\u8bbf\u95ee\u6570\u636e\u5e93\u65f6\uff0c\u6bd4\u5982\u64cd\u4f5c\u540c\u4e00\u5f20\u8868\u65f6\uff0c\u6570\u636e\u5e93\u4e3a\u6bcf\u4e00\u4e2a\u7528\u6237\u5f00\u542f\u7684\u4e8b\u52a1\uff0c\u4e0d\u80fd\u88ab\u5176\u4ed6\u4e8b\u52a1\u7684\u64cd\u4f5c\u6240\u5e72\u6270\uff0c\u591a\u4e2a\u5e76\u53d1\u4e8b\u52a1\u4e4b\u95f4\u8981\u76f8\u4e92\u9694\u79bb\u3002\u5373\u8981\u8fbe\u5230\u8fd9\u4e48\u4e00\u79cd\u6548\u679c\uff1a\u5bf9\u4e8e\u4efb\u610f\u4e24\u4e2a\u5e76\u53d1\u7684\u4e8b\u52a1T1\u548cT2\uff0c\u5728\u4e8b\u52a1T1\u770b\u6765\uff0cT2\u8981\u4e48\u5728T1\u5f00\u59cb\u4e4b\u524d\u5c31\u5df2\u7ecf\u7ed3\u675f\uff0c\u8981\u4e48\u5728T1\u7ed3\u675f\u4e4b\u540e\u624d\u5f00\u59cb\uff0c\u8fd9\u6837\u6bcf\u4e2a\u4e8b\u52a1\u90fd\u611f\u89c9\u4e0d\u5230\u6709\u5176\u4ed6\u4e8b\u52a1\u5728\u5e76\u53d1\u5730\u6267\u884c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5173\u4e8e\u4e8b\u52a1\u7684\u9694\u79bb\u6027\u6570\u636e\u5e93\u63d0\u4f9b\u4e86\u591a\u79cd\u9694\u79bb\u7ea7\u522b\uff0c\u7a0d\u540e\u4f1a\u4ecb\u7ecd\u5230\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u6301\u4e45\u6027\uff08Durability\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6301\u4e45\u6027\u662f\u6307\u4e00\u4e2a\u4e8b\u52a1\u4e00\u65e6\u88ab\u63d0\u4ea4\u4e86\uff0c\u90a3\u4e48\u5bf9\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u7684\u6539\u53d8\u5c31\u662f\u6c38\u4e45\u6027\u7684\uff0c\u5373\u4fbf\u662f\u5728\u6570\u636e\u5e93\u7cfb\u7edf\u9047\u5230\u6545\u969c\u7684\u60c5\u51b5\u4e0b\u4e5f\u4e0d\u4f1a\u4e22\u5931\u63d0\u4ea4\u4e8b\u52a1\u7684\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\u6211\u4eec\u5728\u4f7f\u7528JDBC\u64cd\u4f5c\u6570\u636e\u5e93\u65f6\uff0c\u5728\u63d0\u4ea4\u4e8b\u52a1\u65b9\u6cd5\u540e\uff0c\u63d0\u793a\u7528\u6237\u4e8b\u52a1\u64cd\u4f5c\u5b8c\u6210\uff0c\u5f53\u6211\u4eec\u7a0b\u5e8f\u6267\u884c\u5b8c\u6210\u76f4\u5230\u770b\u5230\u63d0\u793a\u540e\uff0c\u5c31\u53ef\u4ee5\u8ba4\u5b9a\u4e8b\u52a1\u4ee5\u53ca\u6b63\u786e\u63d0\u4ea4\uff0c\u5373\u4f7f\u8fd9\u65f6\u5019\u6570\u636e\u5e93\u51fa\u73b0\u4e86\u95ee\u9898\uff0c\u4e5f\u5fc5\u987b\u8981\u5c06\u6211\u4eec\u7684\u4e8b\u52a1\u5b8c\u5168\u6267\u884c\u5b8c\u6210\uff0c\u5426\u5219\u5c31\u4f1a\u9020\u6210\u6211\u4eec\u770b\u5230\u63d0\u793a\u4e8b\u52a1\u5904\u7406\u5b8c\u6bd5\uff0c\u4f46\u662f\u6570\u636e\u5e93\u56e0\u4e3a\u6545\u969c\u800c\u6ca1\u6709\u6267\u884c\u4e8b\u52a1\u7684\u91cd\u5927\u9519\u8bef\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e8c. \u91cd\u70b9\u8bb2\u89e3\u4e8b\u52a1\u9694\u79bb\u6027<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u591a\u4e2a\u7ebf\u7a0b\u90fd\u5f00\u542f\u4e8b\u52a1\u64cd\u4f5c\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u65f6\uff0c\u6570\u636e\u5e93\u7cfb\u7edf\u8981\u80fd\u8fdb\u884c\u9694\u79bb\u64cd\u4f5c\uff0c\u4ee5\u4fdd\u8bc1\u5404\u4e2a\u7ebf\u7a0b\u83b7\u53d6\u6570\u636e\u7684\u51c6\u786e\u6027\uff0c\u5728\u4ecb\u7ecd\u6570\u636e\u5e93\u63d0\u4f9b\u7684\u5404\u79cd\u9694\u79bb\u7ea7\u522b\u4e4b\u524d\uff0c\u6211\u4eec\u5148\u770b\u770b\u5982\u679c\u4e0d\u8003\u8651\u4e8b\u52a1\u7684\u9694\u79bb\u6027\uff0c\u4f1a\u53d1\u751f\u7684\u51e0\u79cd\u95ee\u9898<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u810f\u8bfb<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u810f\u8bfb\u662f\u6307\u5728\u4e00\u4e2a\u4e8b\u52a1\u5904\u7406\u8fc7\u7a0b\u91cc\u8bfb\u53d6\u4e86\u53e6\u4e00\u4e2a\u672a\u63d0\u4ea4\u7684\u4e8b\u52a1\u4e2d\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u4e00\u4e2a\u4e8b\u52a1\u6b63\u5728\u591a\u6b21\u4fee\u6539\u67d0\u4e2a\u6570\u636e\uff0c\u800c\u5728\u8fd9\u4e2a\u4e8b\u52a1\u4e2d\u8fd9\u591a\u6b21\u7684\u4fee\u6539\u90fd\u8fd8\u672a\u63d0\u4ea4\uff0c\u8fd9\u65f6\u4e00\u4e2a\u5e76\u53d1\u7684\u4e8b\u52a1\u6765\u8bbf\u95ee\u8be5\u6570\u636e\uff0c\u5c31\u4f1a\u9020\u6210\u4e24\u4e2a\u4e8b\u52a1\u5f97\u5230\u7684\u6570\u636e\u4e0d\u4e00\u81f4\u3002\u4f8b\u5982\uff1a\u7528\u6237A\u5411\u7528\u6237B\u8f6c\u8d26100\u5143\uff0c\u5bf9\u5e94SQL\u547d\u4ee4\u5982\u4e0b<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">update account set money=money+100 where name=\u2019B\u2019; (\u6b64\u65f6A\u901a\u77e5B)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">update account set money=money &#8211; 100 where name=\u2019A\u2019;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u53ea\u6267\u884c\u7b2c\u4e00\u6761SQL\u65f6\uff0cA\u901a\u77e5B\u67e5\u770b\u8d26\u6237\uff0cB\u53d1\u73b0\u786e\u5b9e\u94b1\u5df2\u5230\u8d26\uff08\u6b64\u65f6\u5373\u53d1\u751f\u4e86\u810f\u8bfb\uff09\uff0c\u800c\u4e4b\u540e\u65e0\u8bba\u7b2c\u4e8c\u6761SQL\u662f\u5426\u6267\u884c\uff0c\u53ea\u8981\u8be5\u4e8b\u52a1\u4e0d\u63d0\u4ea4\uff0c\u5219\u6240\u6709\u64cd\u4f5c\u90fd\u5c06\u56de\u6eda\uff0c\u90a3\u4e48\u5f53B\u4ee5\u540e\u518d\u6b21\u67e5\u770b\u8d26\u6237\u65f6\u5c31\u4f1a\u53d1\u73b0\u94b1\u5176\u5b9e\u5e76\u6ca1\u6709\u8f6c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u4e0d\u53ef\u91cd\u590d\u8bfb<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u53ef\u91cd\u590d\u8bfb\u662f\u6307\u5728\u5bf9\u4e8e\u6570\u636e\u5e93\u4e2d\u7684\u67d0\u4e2a\u6570\u636e\uff0c\u4e00\u4e2a\u4e8b\u52a1\u8303\u56f4\u5185\u591a\u6b21\u67e5\u8be2\u5374\u8fd4\u56de\u4e86\u4e0d\u540c\u7684\u6570\u636e\u503c\uff0c\u8fd9\u662f\u7531\u4e8e\u5728\u67e5\u8be2\u95f4\u9694\uff0c\u88ab\u53e6\u4e00\u4e2a\u4e8b\u52a1\u4fee\u6539\u5e76\u63d0\u4ea4\u4e86\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\u4e8b\u52a1T1\u5728\u8bfb\u53d6\u67d0\u4e00\u6570\u636e\uff0c\u800c\u4e8b\u52a1T2\u7acb\u9a6c\u4fee\u6539\u4e86\u8fd9\u4e2a\u6570\u636e\u5e76\u4e14\u63d0\u4ea4\u4e8b\u52a1\u7ed9\u6570\u636e\u5e93\uff0c\u4e8b\u52a1T1\u518d\u6b21\u8bfb\u53d6\u8be5\u6570\u636e\u5c31\u5f97\u5230\u4e86\u4e0d\u540c\u7684\u7ed3\u679c\uff0c\u53d1\u9001\u4e86\u4e0d\u53ef\u91cd\u590d\u8bfb\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u53ef\u91cd\u590d\u8bfb\u548c\u810f\u8bfb\u7684\u533a\u522b\u662f\uff0c\u810f\u8bfb\u662f\u67d0\u4e00\u4e8b\u52a1\u8bfb\u53d6\u4e86\u53e6\u4e00\u4e2a\u4e8b\u52a1\u672a\u63d0\u4ea4\u7684\u810f\u6570\u636e\uff0c\u800c\u4e0d\u53ef\u91cd\u590d\u8bfb\u5219\u662f\u8bfb\u53d6\u4e86\u524d\u4e00\u4e8b\u52a1\u63d0\u4ea4\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4e0d\u53ef\u91cd\u590d\u8bfb\u5e76\u4e0d\u662f\u95ee\u9898\uff0c\u6bd4\u5982\u6211\u4eec\u591a\u6b21\u67e5\u8be2\u67d0\u4e2a\u6570\u636e\u5f53\u7136\u4ee5\u6700\u540e\u67e5\u8be2\u5f97\u5230\u7684\u7ed3\u679c\u4e3a\u4e3b\u3002\u4f46\u5728\u53e6\u4e00\u4e9b\u60c5\u51b5\u4e0b\u5c31\u6709\u53ef\u80fd\u53d1\u751f\u95ee\u9898\uff0c\u4f8b\u5982\u5bf9\u4e8e\u540c\u4e00\u4e2a\u6570\u636eA\u548cB\u4f9d\u6b21\u67e5\u8be2\u5c31\u53ef\u80fd\u4e0d\u540c\uff0cA\u548cB\u5c31\u53ef\u80fd\u6253\u8d77\u6765\u4e86\u2026\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u865a\u8bfb(\u5e7b\u8bfb)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e7b\u8bfb\u662f\u4e8b\u52a1\u975e\u72ec\u7acb\u6267\u884c\u65f6\u53d1\u751f\u7684\u4e00\u79cd\u73b0\u8c61\u3002\u4f8b\u5982\u4e8b\u52a1T1\u5bf9\u4e00\u4e2a\u8868\u4e2d\u6240\u6709\u7684\u884c\u7684\u67d0\u4e2a\u6570\u636e\u9879\u505a\u4e86\u4ece\u201c1\u201d\u4fee\u6539\u4e3a\u201c2\u201d\u7684\u64cd\u4f5c\uff0c\u8fd9\u65f6\u4e8b\u52a1T2\u53c8\u5bf9\u8fd9\u4e2a\u8868\u4e2d\u63d2\u5165\u4e86\u4e00\u884c\u6570\u636e\u9879\uff0c\u800c\u8fd9\u4e2a\u6570\u636e\u9879\u7684\u6570\u503c\u8fd8\u662f\u4e3a\u201c1\u201d\u5e76\u4e14\u63d0\u4ea4\u7ed9\u6570\u636e\u5e93\u3002\u800c\u64cd\u4f5c\u4e8b\u52a1T1\u7684\u7528\u6237\u5982\u679c\u518d\u67e5\u770b\u521a\u521a\u4fee\u6539\u7684\u6570\u636e\uff0c\u4f1a\u53d1\u73b0\u8fd8\u6709\u4e00\u884c\u6ca1\u6709\u4fee\u6539\uff0c\u5176\u5b9e\u8fd9\u884c\u662f\u4ece\u4e8b\u52a1T2\u4e2d\u6dfb\u52a0\u7684\uff0c\u5c31\u597d\u50cf\u4ea7\u751f\u5e7b\u89c9\u4e00\u6837\uff0c\u8fd9\u5c31\u662f\u53d1\u751f\u4e86\u5e7b\u8bfb\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e7b\u8bfb\u548c\u4e0d\u53ef\u91cd\u590d\u8bfb\u90fd\u662f\u8bfb\u53d6\u4e86\u53e6\u4e00\u6761\u5df2\u7ecf\u63d0\u4ea4\u7684\u4e8b\u52a1\uff08\u8fd9\u70b9\u5c31\u810f\u8bfb\u4e0d\u540c\uff09\uff0c\u6240\u4e0d\u540c\u7684\u662f\u4e0d\u53ef\u91cd\u590d\u8bfb\u67e5\u8be2\u7684\u90fd\u662f\u540c\u4e00\u4e2a\u6570\u636e\u9879\uff0c\u800c\u5e7b\u8bfb\u9488\u5bf9\u7684\u662f\u4e00\u6279\u6570\u636e\u6574\u4f53\uff08\u6bd4\u5982\u6570\u636e\u7684\u4e2a\u6570\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u73b0\u5728\u6765\u770b\u770bMySQL\u6570\u636e\u5e93\u4e3a\u6211\u4eec\u63d0\u4f9b\u7684\u56db\u79cd\u9694\u79bb\u7ea7\u522b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3000\u3000\u2460 Read uncommitted (\u8bfb\u672a\u63d0\u4ea4)\uff1a\u6700\u4f4e\u7ea7\u522b\uff0c\u4efb\u4f55\u60c5\u51b5\u90fd\u65e0\u6cd5\u4fdd\u8bc1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3000\u3000\u2461 Read committed (\u8bfb\u5df2\u63d0\u4ea4)\uff1a\u53ef\u907f\u514d\u810f\u8bfb\u7684\u53d1\u751f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3000\u3000\u2462 Repeatable read (\u53ef\u91cd\u590d\u8bfb)\uff1a\u53ef\u907f\u514d\u810f\u8bfb\u3001\u4e0d\u53ef\u91cd\u590d\u8bfb\u7684\u53d1\u751f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3000\u3000\u2463Serializable (\u4e32\u884c\u5316)\uff1a\u53ef\u907f\u514d\u810f\u8bfb\u3001\u4e0d\u53ef\u91cd\u590d\u8bfb\u3001\u5e7b\u8bfb\u7684\u53d1\u751f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0a\u56db\u79cd\u9694\u79bb\u7ea7\u522b\u6700\u9ad8\u7684\u662fSerializable\u7ea7\u522b\uff0c\u6700\u4f4e\u7684\u662fRead uncommitted\u7ea7\u522b\uff0c\u5f53\u7136\u7ea7\u522b\u8d8a\u9ad8\uff0c\u6267\u884c\u6548\u7387\u5c31\u8d8a\u4f4e\u3002\u50cfSerializable\u8fd9\u6837\u7684\u7ea7\u522b\uff0c\u5c31\u662f\u4ee5\u9501\u8868\u7684\u65b9\u5f0f(\u7c7b\u4f3c\u4e8eJava\u591a\u7ebf\u7a0b\u4e2d\u7684\u9501)\u4f7f\u5f97\u5176\u4ed6\u7684\u7ebf\u7a0b\u53ea\u80fd\u5728\u9501\u5916\u7b49\u5f85\uff0c\u6240\u4ee5\u5e73\u65f6\u9009\u7528\u4f55\u79cd\u9694\u79bb\u7ea7\u522b\u5e94\u8be5\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u3002\u5728MySQL\u6570\u636e\u5e93\u4e2d\u9ed8\u8ba4\u7684\u9694\u79bb\u7ea7\u522b\u4e3aRepeatable read (\u53ef\u91cd\u590d\u8bfb)\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3000\u3000\u5728MySQL\u6570\u636e\u5e93\u4e2d\uff0c\u652f\u6301\u4e0a\u9762\u56db\u79cd\u9694\u79bb\u7ea7\u522b\uff0c\u9ed8\u8ba4\u7684\u4e3aRepeatable read (\u53ef\u91cd\u590d\u8bfb)\uff1b\u800c\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u53ea\u652f\u6301Serializable (\u4e32\u884c\u5316)\u7ea7\u522b\u548cRead committed (\u8bfb\u5df2\u63d0\u4ea4)\u8fd9\u4e24\u79cd\u7ea7\u522b\uff0c\u5176\u4e2d\u9ed8\u8ba4\u7684\u4e3aRead committed\u7ea7\u522b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4. \u5728MySQL\u6570\u636e\u5e93\u4e2d\u67e5\u770b\u5f53\u524d\u4e8b\u52a1\u7684\u9694\u79bb\u7ea7\u522b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">select @@tx_isolation;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3000\u3000\u5728MySQL\u6570\u636e\u5e93\u4e2d\u8bbe\u7f6e\u4e8b\u52a1\u7684\u9694\u79bb \u7ea7\u522b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">set [glogal | session] transaction isolation level \u9694\u79bb\u7ea7\u522b\u540d\u79f0;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">set tx_isolation=\u2019\u9694\u79bb\u7ea7\u522b\u540d\u79f0;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bbe\u7f6e\u6570\u636e\u5e93\u7684\u9694\u79bb\u7ea7\u522b\u4e00\u5b9a\u8981\u662f\u5728\u5f00\u542f\u4e8b\u52a1\u4e4b\u524d\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00. \u4ec0\u4e48\u662f\u4e8b\u52a1 \u4e8b\u52a1\uff08Transaction\uff09\uff1a\u8bbf\u95ee\u5e76\u53ef\u80fd\u66f4\u65b0\u6570\u636e\u5e93\u4e2d\u5404\u79cd\u6570\u636e &hellip; <a href=\"https:\/\/blog.witshang.com\/index.php\/2024\/08\/16\/%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3mysql-%e6%95%b0%e6%8d%ae%e5%ba%93%e4%ba%8b%e5%8a%a1%e4%b8%8e%e9%9a%94%e7%a6%bb%e7%ba%a7%e5%88%ab\/\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-14","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.witshang.com\/index.php\/wp-json\/wp\/v2\/posts\/14","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.witshang.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.witshang.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.witshang.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.witshang.com\/index.php\/wp-json\/wp\/v2\/comments?post=14"}],"version-history":[{"count":1,"href":"https:\/\/blog.witshang.com\/index.php\/wp-json\/wp\/v2\/posts\/14\/revisions"}],"predecessor-version":[{"id":15,"href":"https:\/\/blog.witshang.com\/index.php\/wp-json\/wp\/v2\/posts\/14\/revisions\/15"}],"wp:attachment":[{"href":"https:\/\/blog.witshang.com\/index.php\/wp-json\/wp\/v2\/media?parent=14"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.witshang.com\/index.php\/wp-json\/wp\/v2\/categories?post=14"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.witshang.com\/index.php\/wp-json\/wp\/v2\/tags?post=14"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}