{"id":199620,"date":"2025-05-06T10:19:38","date_gmt":"2025-05-06T02:19:38","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199620\/"},"modified":"2025-05-06T10:19:38","modified_gmt":"2025-05-06T02:19:38","slug":"%e5%88%86%e6%9e%90mysql%e9%94%81%e7%9a%84%e5%ae%9e%e7%8e%b0%e5%8e%9f%e7%90%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199620\/","title":{"rendered":"\u5206\u6790MySQL\u9501\u7684\u5b9e\u73b0\u539f\u7406"},"content":{"rendered":"

<\/b> <\/p>\n

\u5206\u6790MySQL\u9501\u7684\u5b9e\u73b0\u539f\u7406<\/h1>\n

\u600e\u4e48\u5165\u95e8\u6570\u636e\u5e93\u7f16\u7a0b\uff1f\u9700\u8981\u5b66\u4e60\u54ea\u4e9b\u77e5\u8bc6\u70b9\uff1f\u8fd9\u662f\u65b0\u624b\u4eec\u521a\u63a5\u89e6\u7f16\u7a0b\u65f6\u5e38\u89c1\u7684\u95ee\u9898\uff1b\u4e0b\u9762\u4e3b\u673a\u5b9d\u8d1d\u5c31\u6765\u7ed9\u5927\u5bb6\u6574\u7406\u5206\u4eab\u4e00\u4e9b\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u591f\u7ed9\u521d\u5b66\u8005\u4e00\u4e9b\u5e2e\u52a9\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u4ecb\u7ecd\u300a\u5206\u6790MySQL\u9501\u7684\u5b9e\u73b0\u539f\u7406\u300b\uff0c\u6d89\u53ca\u5230\uff0c\u6709\u9700\u8981\u7684\u53ef\u4ee5\u6536\u85cf\u4e00\u4e0b<\/p>\n

MySQL \u9501\u7684\u5b9e\u73b0\u539f\u7406\u89e3\u6790<\/p>\n

\u5f15\u8a00:
\u5728\u5e76\u53d1\u8bbf\u95ee\u6570\u636e\u5e93\u7684\u73af\u5883\u4e2d\uff0c\u4e3a\u4e86\u4fdd\u969c\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\uff0c\u6570\u636e\u5e93\u7cfb\u7edf\u9700\u8981\u5b9e\u73b0\u9501\u673a\u5236\u3002\u9501\u673a\u5236\u901a\u8fc7\u9650\u5236\u5bf9\u5171\u4eab\u8d44\u6e90\u7684\u8bbf\u95ee\uff0c\u786e\u4fdd\u4e0d\u540c\u7684\u4e8b\u52a1\u80fd\u591f\u6709\u5e8f\u5730\u8bbf\u95ee\u548c\u4fee\u6539\u6570\u636e\u3002MySQL\u4f5c\u4e3a\u4e00\u79cd\u5e38\u7528\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0c\u4e5f\u63d0\u4f9b\u4e86\u591a\u79cd\u9501\u673a\u5236\u6765\u5904\u7406\u5e76\u53d1\u8bbf\u95ee\u7684\u95ee\u9898\u3002\u672c\u6587\u5c06\u5bf9MySQL\u9501\u7684\u5b9e\u73b0\u539f\u7406\u8fdb\u884c\u89e3\u6790\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

    \n
  1. MySQL\u9501\u7684\u5206\u7c7b
    MySQL\u4e2d\u7684\u9501\u53ef\u4ee5\u5206\u4e3a\u4e24\u5927\u7c7b\uff1a\u5171\u4eab\u9501\uff08Shared Lock\uff09\u548c\u6392\u4ed6\u9501\uff08Exclusive Lock\uff09\u3002<\/li>\n<\/ol>\n

    \u5171\u4eab\u9501\uff08S\u9501\uff09\uff1a\u591a\u4e2a\u4e8b\u52a1\u53ef\u4ee5\u5171\u4eab\u540c\u4e00\u8d44\u6e90\uff0c\u5728\u8bfb\u53d6\u6570\u636e\u65f6\u4f7f\u7528\u5171\u4eab\u9501\uff0c\u4e0d\u9700\u8981\u4e92\u65a5\uff0c\u56e0\u4e3a\u8bfb\u53d6\u64cd\u4f5c\u4e0d\u4f1a\u5bf9\u6570\u636e\u9020\u6210\u5f71\u54cd\u3002<\/p>\n

    \u6392\u4ed6\u9501\uff08X\u9501\uff09\uff1a\u53ea\u6709\u4e00\u4e2a\u4e8b\u52a1\u53ef\u4ee5\u9501\u5b9a\u8d44\u6e90\uff0c\u5176\u4ed6\u4e8b\u52a1\u65e0\u6cd5\u8bbf\u95ee\u3002\u5728\u66f4\u65b0\u3001\u63d2\u5165\u548c\u5220\u9664\u6570\u636e\u65f6\u4f7f\u7528\u6392\u4ed6\u9501\uff0c\u4ee5\u786e\u4fdd\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002<\/p>\n

      \n
    1. MySQL\u9501\u7684\u7ea7\u522b
      MySQL\u63d0\u4f9b\u4e86\u591a\u79cd\u9501\u7684\u7ea7\u522b\uff0c\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u7684\u9700\u6c42\u9009\u62e9\u9002\u5f53\u7684\u9501\u7ea7\u522b\u3002\u5e38\u7528\u7684\u9501\u7ea7\u522b\u5305\u62ec\uff1a<\/li>\n<\/ol>\n

      \u5171\u4eab\u9501\uff08Shared Lock\uff09\uff1a\u591a\u4e2a\u4e8b\u52a1\u53ef\u4ee5\u540c\u65f6\u6301\u6709\u8be5\u9501\uff0c\u8bfb\u53d6\u64cd\u4f5c\u4e0d\u4f1a\u963b\u585e\u5176\u4ed6\u4e8b\u52a1\u7684\u8bfb\u53d6\u64cd\u4f5c\uff0c\u4f46\u4f1a\u963b\u585e\u5176\u4ed6\u4e8b\u52a1\u7684\u5199\u5165\u64cd\u4f5c\u3002<\/p>\n

      \u6392\u4ed6\u9501\uff08Exclusive Lock\uff09\uff1a\u53ea\u6709\u4e00\u4e2a\u4e8b\u52a1\u53ef\u4ee5\u6301\u6709\u8be5\u9501\uff0c\u5176\u4ed6\u4e8b\u52a1\u65e0\u6cd5\u8bbf\u95ee\u9501\u5b9a\u7684\u8d44\u6e90\u3002<\/p>\n

      \u610f\u5411\u5171\u4eab\u9501\uff08Intention Shared Lock\uff09\uff1a\u8868\u7ea7\u9501\uff0c\u4e8b\u52a1\u5728\u83b7\u53d6\u884c\u7ea7\u9501\u4e4b\u524d\u5148\u8981\u83b7\u53d6\u8be5\u8868\u7684\u610f\u5411\u5171\u4eab\u9501\uff0c\u7528\u4e8e\u6307\u793a\u4e8b\u52a1\u51c6\u5907\u83b7\u53d6\u8be5\u8868\u4e2d\u7684\u884c\u7ea7\u5171\u4eab\u9501\u3002<\/p>\n

      \u610f\u5411\u6392\u4ed6\u9501\uff08Intention Exclusive Lock\uff09\uff1a\u8868\u7ea7\u9501\uff0c\u4e8b\u52a1\u5728\u83b7\u53d6\u884c\u7ea7\u9501\u4e4b\u524d\u5148\u8981\u83b7\u53d6\u8be5\u8868\u7684\u610f\u5411\u6392\u4ed6\u9501\uff0c\u7528\u4e8e\u6307\u793a\u4e8b\u52a1\u51c6\u5907\u83b7\u53d6\u8be5\u8868\u4e2d\u7684\u884c\u7ea7\u6392\u4ed6\u9501\u3002<\/p>\n

      \u884c\u7ea7\u9501\uff08Row Lock\uff09\uff1aMySQL\u652f\u6301\u5bf9\u6570\u636e\u8868\u4e2d\u7684\u884c\u8fdb\u884c\u9501\u5b9a\uff0c\u884c\u7ea7\u9501\u53ef\u4ee5\u7cbe\u786e\u63a7\u5236\u5bf9\u6570\u636e\u7684\u8bbf\u95ee\uff0c\u907f\u514d\u4e86\u5bf9\u6574\u4e2a\u8868\u7684\u9501\u5b9a\u3002<\/p>\n

      \u8868\u7ea7\u9501\uff08Table Lock\uff09\uff1a\u5bf9\u6574\u4e2a\u8868\u8fdb\u884c\u9501\u5b9a\uff0c\u4e00\u6b21\u9501\u5b9a\u4e00\u6574\u5f20\u8868\uff0c\u4e0d\u4ec5\u5f71\u54cd\u5e76\u53d1\u6027\u80fd\uff0c\u8fd8\u53ef\u80fd\u5f15\u8d77\u6b7b\u9501\u3002<\/p>\n

        \n
      1. MySQL\u9501\u7684\u5b9e\u73b0\u539f\u7406
        MySQL\u4e2d\u7684\u9501\u673a\u5236\u662f\u57fa\u4e8eInnoDB\u5b58\u50a8\u5f15\u64ce\u5b9e\u73b0\u7684\u3002InnoDB\u4f7f\u7528\u4e86\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\uff08MVCC\uff09\uff0c\u901a\u8fc7\u4f7f\u7528\u8bfb\u5199\u9501\u548c\u5404\u79cd\u7ea7\u522b\u7684\u9501\u6765\u5b9e\u73b0\u5e76\u53d1\u63a7\u5236\u3002<\/li>\n<\/ol>\n

        \u5728\u4f7f\u7528InnoDB\u5b58\u50a8\u5f15\u64ce\u65f6\uff0c\u7531\u4e8e\u5176\u884c\u7ea7\u9501\u7684\u7279\u6027\uff0cMySQL\u5bf9\u6bcf\u4e2a\u884c\u8bb0\u5f55\u90fd\u4f1a\u8fdb\u884c\u52a0\u9501\u64cd\u4f5c\uff0c\u4ece\u800c\u5b9e\u73b0\u5bf9\u884c\u7ea7\u522b\u7684\u63a7\u5236\u3002<\/p>\n

        MySQL\u7684\u9501\u5b9e\u73b0\u4e3b\u8981\u4f9d\u8d56\u4ee5\u4e0b\u56db\u79cd\u673a\u5236\uff1a<\/p>\n

        \u9501\u4e92\u65a5\uff1aMySQL\u4e2d\u7684\u9501\u662f\u57fa\u4e8e\u4e92\u65a5\u9501\u5b9e\u73b0\u7684\uff0c\u901a\u8fc7\u5728\u5185\u5b58\u4e2d\u8bbe\u7f6e\u6807\u5fd7\u4f4d\u6765\u5b9e\u73b0\u9501\u7684\u4e92\u65a5\u8bbf\u95ee\u3002<\/p>\n

        \u6b7b\u9501\u68c0\u6d4b\uff1aMySQL\u4f7f\u7528\u6b7b\u9501\u68c0\u6d4b\u7b97\u6cd5\u6765\u89e3\u51b3\u6b7b\u9501\u95ee\u9898\u3002\u5f53\u53d1\u751f\u6b7b\u9501\u65f6\uff0cMySQL\u4f1a\u81ea\u52a8\u6740\u6b7b\u4e00\u4e2a\u4e8b\u52a1\uff0c\u4ee5\u89e3\u9664\u6b7b\u9501\u3002<\/p>\n

        \u9501\u8d85\u65f6\u673a\u5236\uff1aMySQL\u4e2d\u7684\u9501\u64cd\u4f5c\u6709\u8d85\u65f6\u673a\u5236\uff0c\u5982\u679c\u4e00\u4e2a\u4e8b\u52a1\u5728\u4e00\u5b9a\u65f6\u95f4\u5185\u65e0\u6cd5\u83b7\u53d6\u5230\u9501\u5b9a\u7684\u8d44\u6e90\uff0c\u4f1a\u81ea\u52a8\u653e\u5f03\u3002<\/p>\n

        \u7b49\u5f85\u5524\u9192\u673a\u5236\uff1aMySQL\u4e2d\u7684\u4e8b\u52a1\u5728\u7b49\u5f85\u9501\u8d44\u6e90\u65f6\uff0c\u4f1a\u901a\u8fc7\u7b49\u5f85\u5524\u9192\u673a\u5236\u8fdb\u884c\u5904\u7406\u3002\u5f53\u7b49\u5f85\u7684\u9501\u8d44\u6e90\u53ef\u7528\u65f6\uff0c\u4e8b\u52a1\u4f1a\u88ab\u5524\u9192\u7ee7\u7eed\u6267\u884c\u3002<\/p>\n

          \n
        1. MySQL\u9501\u7684\u5177\u4f53\u4ee3\u7801\u793a\u4f8b
          \u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528MySQL\u9501\u7684\u5177\u4f53\u4ee3\u7801\u793a\u4f8b\uff1a<\/li>\n<\/ol>\n

          — \u521b\u5efa\u4e00\u4e2a\u6d4b\u8bd5\u8868
          CREATE TABLE test<\/code> (
          id<\/code> int(11) NOT NULL AUTO_INCREMENT,
          name<\/code> varchar(20) DEFAULT NULL,
          PRIMARY KEY (id<\/code>)
          ) ENGINE=InnoDB DEFAULT CHARSET=utf8;<\/p>\n

          — \u4e8b\u52a11\u52a0\u6392\u4ed6\u9501
          BEGIN;
          SELECT * FROM test WHERE id = 1 FOR UPDATE;<\/p>\n

          — \u4e8b\u52a12\u52a0\u5171\u4eab\u9501
          BEGIN;
          SELECT * FROM test WHERE id = 1 LOCK IN SHARE MODE;<\/p>\n

          \u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u4e8b\u52a11\u901a\u8fc7\u5bf9id=1\u7684\u8bb0\u5f55\u52a0\u6392\u4ed6\u9501\uff0c\u4e8b\u52a12\u901a\u8fc7\u5bf9id=1\u7684\u8bb0\u5f55\u52a0\u5171\u4eab\u9501\u3002\u4e8b\u52a11\u83b7\u5f97\u6392\u4ed6\u9501\u540e\uff0c\u5176\u4ed6\u4e8b\u52a1\u65e0\u6cd5\u5bf9\u8be5\u884c\u8bb0\u5f55\u8fdb\u884c\u8bfb\u53d6\u548c\u4fee\u6539\u64cd\u4f5c\u3002\u4e8b\u52a12\u83b7\u5f97\u5171\u4eab\u9501\u540e\uff0c\u5176\u4ed6\u4e8b\u52a1\u4ecd\u7136\u53ef\u4ee5\u5bf9\u8be5\u884c\u8bb0\u5f55\u8fdb\u884c\u8bfb\u53d6\u64cd\u4f5c\uff0c\u4f46\u65e0\u6cd5\u8fdb\u884c\u4fee\u6539\u64cd\u4f5c\u3002<\/p>\n

          \u7ed3\u8bba\uff1a
          MySQL\u4f5c\u4e3a\u4e00\u79cd\u5e38\u7528\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0c\u5728\u5904\u7406\u5e76\u53d1\u8bbf\u95ee\u7684\u573a\u666f\u4e0b\uff0c\u63d0\u4f9b\u4e86\u591a\u79cd\u9501\u673a\u5236\u6765\u4fdd\u969c\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u901a\u8fc7\u5bf9MySQL\u9501\u7684\u5b9e\u73b0\u539f\u7406\u8fdb\u884c\u5206\u6790\u548c\u89e3\u6790\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528MySQL\u7684\u9501\u673a\u5236\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u9002\u5f53\u7684\u9501\u7ea7\u522b\u548c\u7ec6\u7c92\u5ea6\u7684\u9501\u5b9a\u65b9\u5f0f\uff0c\u80fd\u591f\u63d0\u9ad8\u5e76\u53d1\u6027\u80fd\u548c\u6570\u636e\u5b89\u5168\u6027\u3002<\/p>\n

          \u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300a\u5206\u6790MySQL\u9501\u7684\u5b9e\u73b0\u539f\u7406\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8eMySQL \u9501\u5b9e\u73b0\u539f\u7406\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n

          \n
          \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"

          \u5206\u6790MySQL\u9501\u7684\u5b9e\u73b0\u539f\u7406 \u600e\u4e48...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-199620","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199620","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=199620"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199620\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}