{"id":6604,"date":"2024-11-14T11:55:56","date_gmt":"2024-11-14T03:55:56","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6604\/"},"modified":"2024-11-14T11:55:56","modified_gmt":"2024-11-14T03:55:56","slug":"mysql%e9%9a%94%e7%a6%bb%e7%ba%a7%e5%88%ab%e5%ae%9e%e7%8e%b0%e5%8e%9f%e7%90%86","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6604\/","title":{"rendered":"mysql\u9694\u79bb\u7ea7\u522b\u5b9e\u73b0\u539f\u7406"},"content":{"rendered":"<blockquote><p>\n  mysql \u9694\u79bb\u7ea7\u522b\u5b9e\u73b0\u539f\u7406\u5982\u4e0b\uff1amvcc\uff08\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\uff09\uff1a\u521b\u5efa\u591a\u4e2a\u6570\u636e\u7248\u672c\uff0c\u4e8b\u52a1\u8bfb\u53d6\u4e0e\u81ea\u8eab\u9694\u79bb\u7ea7\u522b\u76f8\u5173\u7684\u7248\u672c\uff0c\u9632\u6b62\u810f\u8bfb\u548c\u4e0d\u53ef\u91cd\u590d\u8bfb\u3002\u9501\u673a\u5236\uff1a\u4f7f\u7528\u884c\u9501\u3001\u8868\u9501\u548c\u95f4\u9699\u9501\u7b49\u673a\u5236\u9632\u6b62\u5e76\u53d1\u51b2\u7a81\uff0c\u4e0d\u540c\u9694\u79bb\u7ea7\u522b\u4f7f\u7528\u4e0d\u540c\u7684\u9501\u673a\u5236\u5b9e\u73b0\u6240\u9700\u884c\u4e3a\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202408\/06\/2024080618544779717.jpg\" class=\"aligncenter\" title=\"mysql\u9694\u79bb\u7ea7\u522b\u5b9e\u73b0\u539f\u7406\u63d2\u56fe\" alt=\"mysql\u9694\u79bb\u7ea7\u522b\u5b9e\u73b0\u539f\u7406\u63d2\u56fe\" \/><\/p>\n<p><strong>MySQL \u9694\u79bb\u7ea7\u522b\u5b9e\u73b0\u539f\u7406<\/strong><\/p>\n<p><strong>\u4e0d\u540c\u9694\u79bb\u7ea7\u522b<\/strong><\/p>\n<p>MySQL \u63d0\u4f9b 4 \u79cd\u9694\u79bb\u7ea7\u522b\uff1a<\/p>\n<ul>\n<li> <strong>READ UNCOMMITTED:<\/strong> \u53ef\u8bfb\u53d6\u672a\u63d0\u4ea4\u6570\u636e\uff0c\u53ef\u80fd\u51fa\u73b0\u810f\u8bfb\u548c\u4e0d\u53ef\u91cd\u590d\u8bfb\u3002<\/li>\n<li> <strong>READ COMMITTED:<\/strong> \u53ea\u80fd\u8bfb\u53d6\u5df2\u63d0\u4ea4\u6570\u636e\uff0c\u4f46\u4ecd\u53ef\u80fd\u51fa\u73b0\u4e0d\u53ef\u91cd\u590d\u8bfb\u3002<\/li>\n<li> <strong>REPEATABLE READ:<\/strong> \u4fdd\u8bc1\u6bcf\u6b21\u8bfb\u53d6\u90fd\u662f\u4e00\u4e2a\u4e00\u81f4\u7684\u5feb\u7167\uff0c\u4e0d\u53ef\u91cd\u590d\u8bfb\u548c\u5e7b\u8bfb\u4e0d\u4f1a\u53d1\u751f\u3002<\/li>\n<li> <strong>SERIALIZABLE:<\/strong> \u6700\u4e25\u683c\u7684\u7ea7\u522b\uff0c\u786e\u4fdd\u4e8b\u52a1\u4e32\u884c\u6267\u884c\uff0c\u4ece\u800c\u9632\u6b62\u5e7b\u8bfb\u548c\u5176\u4ed6\u5e76\u53d1\u95ee\u9898\u3002<\/li>\n<\/ul>\n<p><strong>\u9694\u79bb\u7ea7\u522b\u539f\u7406<\/strong><\/p>\n<p>MySQL \u4f7f\u7528\u4ee5\u4e0b\u6280\u672f\u5b9e\u73b0\u4e0d\u540c\u9694\u79bb\u7ea7\u522b\uff1a<\/p>\n<p><strong>MVCC\uff08\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\uff09<\/strong><\/p>\n<p>MVCC \u5141\u8bb8\u5728\u4e8b\u52a1\u4e2d\u521b\u5efa\u8868\u548c\u884c\u7684\u591a\u4e2a\u7248\u672c\u3002\u6bcf\u4e2a\u8bed\u53e5\u90fd\u4f1a\u751f\u6210\u4e00\u4e2a\u65b0\u7684\u6570\u636e\u7248\u672c\uff0c\u8be5\u7248\u672c\u4e0e\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\u76f8\u5173\u8054\u3002\u8fd9\u4f7f\u5f97\u4e8b\u52a1\u53ef\u4ee5\u8bfb\u53d6\u4e0d\u4f1a\u88ab\u5176\u4ed6\u4e8b\u52a1\u4fee\u6539\u7684\u6570\u636e\u7248\u672c\u3002<\/p>\n<p><strong>\u9501\u673a\u5236<\/strong><\/p>\n<p>MySQL \u4f7f\u7528\u4e0d\u540c\u7684\u9501\u673a\u5236\u6765\u9632\u6b62\u5e76\u53d1\u51b2\u7a81\u3002\u8fd9\u4e9b\u9501\u5305\u62ec\uff1a<\/p>\n<ul>\n<li> <strong>\u884c\u9501:<\/strong> \u9501\u5b9a\u7279\u5b9a\u884c\uff0c\u963b\u6b62\u5176\u4ed6\u4e8b\u52a1\u4fee\u6539\u8be5\u884c\u3002<\/li>\n<li> <strong>\u8868\u9501:<\/strong> \u9501\u5b9a\u6574\u4e2a\u8868\uff0c\u9632\u6b62\u5176\u4ed6\u4e8b\u52a1\u8bbf\u95ee\u8be5\u8868\u3002<\/li>\n<li> <strong>\u95f4\u9699\u9501:<\/strong> \u9501\u5b9a\u6307\u5b9a\u8303\u56f4\u7684\u884c\uff0c\u9632\u6b62\u5176\u4ed6\u4e8b\u52a1\u5728\u8be5\u8303\u56f4\u5185\u63d2\u5165\u6216\u5220\u9664\u884c\u3002<\/li>\n<\/ul>\n<p><strong>\u9694\u79bb\u7ea7\u522b\u4e0e\u9501<\/strong><\/p>\n<p>\u4e0d\u540c\u7684\u9694\u79bb\u7ea7\u522b\u4f7f\u7528\u4e0d\u540c\u7684\u9501\u673a\u5236\u6765\u5b9e\u73b0\u5176\u6240\u9700\u7684\u884c\u4e3a\uff1a<\/p>\n<ul>\n<li> <strong>READ UNCOMMITTED:<\/strong> \u4e0d\u4f7f\u7528\u4efb\u4f55\u9501\uff0c\u5141\u8bb8\u810f\u8bfb\u548c\u4e0d\u53ef\u91cd\u590d\u8bfb\u3002<\/li>\n<li> <strong>READ COMMITTED:<\/strong> \u4f7f\u7528\u884c\u9501\uff0c\u9632\u6b62\u5176\u4ed6\u4e8b\u52a1\u63d0\u4ea4\u672a\u63d0\u4ea4\u7684\u6570\u636e\u3002<\/li>\n<li> <strong>REPEATABLE READ:<\/strong> \u4f7f\u7528\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\u548c\u95f4\u9699\u9501\uff0c\u786e\u4fdd\u4e8b\u52a1\u5185\u8bfb\u53d6\u7684\u6570\u636e\u4e0d\u4f1a\u88ab\u5176\u4ed6\u4e8b\u52a1\u4fee\u6539\u3002<\/li>\n<li> <strong>SERIALIZABLE:<\/strong> \u4f7f\u7528\u8868\u9501\uff0c\u5f3a\u5236\u4e8b\u52a1\u4e32\u884c\u6267\u884c\u3002<\/li>\n<\/ul>\n<p><strong>\u603b\u7ed3<\/strong><\/p>\n<p>MySQL \u4f7f\u7528\u591a\u79cd\u6280\u672f\uff0c\u5305\u62ec MVCC \u548c\u9501\u673a\u5236\uff0c\u6765\u5b9e\u73b0\u4e0d\u540c\u7684\u9694\u79bb\u7ea7\u522b\u3002\u8fd9\u4e9b\u7ea7\u522b\u63d0\u4f9b\u4e0d\u540c\u7684\u5e76\u53d1\u63a7\u5236\u7ea7\u522b\uff0c\u4ee5\u6ee1\u8db3\u5404\u79cd\u5e94\u7528\u7a0b\u5e8f\u7684\u9700\u6c42\uff0c\u4ece\u4f4e\u9694\u79bb\uff08\u810f\u8bfb\u548c\u4e0d\u53ef\u91cd\u590d\u8bfb\uff09\u5230\u9ad8\u9694\u79bb\uff08\u4fdd\u8bc1\u4e32\u884c\u6267\u884c\uff09\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u9694\u79bb\u7ea7\u522b\u5b9e\u73b0\u539f\u7406\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>mysql \u9694\u79bb\u7ea7\u522b\u5b9e\u73b0\u539f\u7406\u5982\u4e0b\uff1amvcc\uff08\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\uff09\uff1a\u521b\u5efa\u591a\u4e2a\u6570\u636e\u7248\u672c\uff0c\u4e8b\u52a1\u8bfb\u53d6\u4e0e\u81ea\u8eab\u9694\u79bb\u7ea7\u522b\u76f8\u5173\u7684\u7248\u672c\uff0c\u9632\u6b62\u810f\u8bfb\u548c\u4e0d\u53ef\u91cd\u590d\u8bfb\u3002\u9501\u673a\u5236\uff1a\u4f7f\u7528\u884c\u9501\u3001\u8868\u9501\u548c\u95f4\u9699\u9501\u7b49\u673a\u5236\u9632\u6b62\u5e76\u53d1\u51b2\u7a81\uff0c\u4e0d\u540c\u9694\u79bb\u7ea7\u522b\u4f7f\u7528\u4e0d\u540c\u7684\u9501\u673a\u5236\u5b9e\u73b0\u6240\u9700\u884c\u4e3a\u3002 MySQL \u9694\u79bb\u7ea7\u522b\u5b9e\u73b0\u539f\u7406 \u4e0d\u540c\u9694\u79bb\u7ea7\u522b MySQL \u63d0\u4f9b 4 \u79cd\u9694\u79bb\u7ea7\u522b\uff1a READ UNCOMMITTED: \u53ef\u8bfb\u53d6\u672a\u63d0\u4ea4\u6570\u636e\uff0c\u53ef\u80fd\u51fa\u73b0\u810f\u8bfb\u548c\u4e0d\u53ef\u91cd\u590d\u8bfb\u3002 READ COMMITTED: \u53ea\u80fd\u8bfb\u53d6\u5df2\u63d0\u4ea4\u6570\u636e\uff0c\u4f46\u4ecd\u53ef\u80fd\u51fa\u73b0\u4e0d\u53ef\u91cd\u590d\u8bfb\u3002 REPEATABLE READ: \u4fdd\u8bc1\u6bcf\u6b21\u8bfb\u53d6\u90fd\u662f\u4e00\u4e2a\u4e00\u81f4\u7684\u5feb\u7167\uff0c\u4e0d\u53ef\u91cd\u590d\u8bfb\u548c\u5e7b\u8bfb\u4e0d\u4f1a\u53d1\u751f\u3002 SERIALIZABLE: \u6700\u4e25\u683c\u7684\u7ea7\u522b\uff0c\u786e\u4fdd\u4e8b\u52a1\u4e32\u884c\u6267\u884c\uff0c\u4ece\u800c\u9632\u6b62\u5e7b\u8bfb\u548c\u5176\u4ed6\u5e76\u53d1\u95ee\u9898\u3002 \u9694\u79bb\u7ea7\u522b\u539f\u7406 MySQL \u4f7f\u7528\u4ee5\u4e0b\u6280\u672f\u5b9e\u73b0\u4e0d\u540c\u9694\u79bb\u7ea7\u522b\uff1a MVCC\uff08\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\uff09 MVCC \u5141\u8bb8\u5728\u4e8b\u52a1\u4e2d\u521b\u5efa\u8868\u548c\u884c\u7684\u591a\u4e2a\u7248\u672c\u3002\u6bcf\u4e2a\u8bed\u53e5\u90fd\u4f1a\u751f\u6210\u4e00\u4e2a\u65b0\u7684\u6570\u636e\u7248\u672c\uff0c\u8be5\u7248\u672c\u4e0e\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\u76f8\u5173\u8054\u3002\u8fd9\u4f7f\u5f97\u4e8b\u52a1\u53ef\u4ee5\u8bfb\u53d6\u4e0d\u4f1a\u88ab\u5176\u4ed6\u4e8b\u52a1\u4fee\u6539\u7684\u6570\u636e\u7248\u672c\u3002 \u9501\u673a\u5236 MySQL \u4f7f\u7528\u4e0d\u540c\u7684\u9501\u673a\u5236\u6765\u9632\u6b62\u5e76\u53d1\u51b2\u7a81\u3002\u8fd9\u4e9b\u9501\u5305\u62ec\uff1a \u884c\u9501: \u9501\u5b9a\u7279\u5b9a\u884c\uff0c\u963b\u6b62\u5176\u4ed6\u4e8b\u52a1\u4fee\u6539\u8be5\u884c\u3002 \u8868\u9501: \u9501\u5b9a\u6574\u4e2a\u8868\uff0c\u9632\u6b62\u5176\u4ed6\u4e8b\u52a1\u8bbf\u95ee\u8be5\u8868\u3002 \u95f4\u9699\u9501: \u9501\u5b9a\u6307\u5b9a\u8303\u56f4\u7684\u884c\uff0c\u9632\u6b62\u5176\u4ed6\u4e8b\u52a1\u5728\u8be5\u8303\u56f4\u5185\u63d2\u5165\u6216\u5220\u9664\u884c\u3002 \u9694\u79bb\u7ea7\u522b\u4e0e\u9501 \u4e0d\u540c\u7684\u9694\u79bb\u7ea7\u522b\u4f7f\u7528\u4e0d\u540c\u7684\u9501\u673a\u5236\u6765\u5b9e\u73b0\u5176\u6240\u9700\u7684\u884c\u4e3a\uff1a READ UNCOMMITTED: \u4e0d\u4f7f\u7528\u4efb\u4f55\u9501\uff0c\u5141\u8bb8\u810f\u8bfb\u548c\u4e0d\u53ef\u91cd\u590d\u8bfb\u3002 READ COMMITTED: \u4f7f\u7528\u884c\u9501\uff0c\u9632\u6b62\u5176\u4ed6\u4e8b\u52a1\u63d0\u4ea4\u672a\u63d0\u4ea4\u7684\u6570\u636e\u3002 REPEATABLE READ: \u4f7f\u7528\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\u548c\u95f4\u9699\u9501\uff0c\u786e\u4fdd\u4e8b\u52a1\u5185\u8bfb\u53d6\u7684\u6570\u636e\u4e0d\u4f1a\u88ab\u5176\u4ed6\u4e8b\u52a1\u4fee\u6539\u3002 SERIALIZABLE: \u4f7f\u7528\u8868\u9501\uff0c\u5f3a\u5236\u4e8b\u52a1\u4e32\u884c\u6267\u884c\u3002 \u603b\u7ed3 MySQL \u4f7f\u7528\u591a\u79cd\u6280\u672f\uff0c\u5305\u62ec MVCC \u548c\u9501\u673a\u5236\uff0c\u6765\u5b9e\u73b0\u4e0d\u540c\u7684\u9694\u79bb\u7ea7\u522b\u3002\u8fd9\u4e9b\u7ea7\u522b\u63d0\u4f9b\u4e0d\u540c\u7684\u5e76\u53d1\u63a7\u5236\u7ea7\u522b\uff0c\u4ee5\u6ee1\u8db3\u5404\u79cd\u5e94\u7528\u7a0b\u5e8f\u7684\u9700\u6c42\uff0c\u4ece\u4f4e\u9694\u79bb\uff08\u810f\u8bfb\u548c\u4e0d\u53ef\u91cd\u590d\u8bfb\uff09\u5230\u9ad8\u9694\u79bb\uff08\u4fdd\u8bc1\u4e32\u884c\u6267\u884c\uff09\u3002 \u4ee5\u4e0a\u5c31\u662f\u9694\u79bb\u7ea7\u522b\u5b9e\u73b0\u539f\u7406\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-6604","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6604","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=6604"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6604\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}