{"id":199622,"date":"2025-05-06T09:51:52","date_gmt":"2025-05-06T01:51:52","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199622\/"},"modified":"2025-05-06T09:51:52","modified_gmt":"2025-05-06T01:51:52","slug":"%e8%a7%a3%e6%9e%90-mysql-%e9%94%81%e7%9a%84%e5%86%85%e9%83%a8%e5%ae%9e%e7%8e%b0%e5%8e%9f%e7%90%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199622\/","title":{"rendered":"\u89e3\u6790 MySQL \u9501\u7684\u5185\u90e8\u5b9e\u73b0\u539f\u7406"},"content":{"rendered":"

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

\u89e3\u6790 MySQL \u9501\u7684\u5185\u90e8\u5b9e\u73b0\u539f\u7406<\/h1>\n

\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300a\u89e3\u6790 MySQL \u9501\u7684\u5185\u90e8\u5b9e\u73b0\u539f\u7406\u300b\uff0c\u4e3b\u8981\u5305\u62ec\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002<\/p>\n

MySQL \u9501\u7684\u5185\u90e8\u5b9e\u73b0\u89e3\u6790\u53ca\u4ee3\u7801\u793a\u4f8b<\/p>\n

\u5f15\u8a00\uff1a
\u5728\u591a\u7528\u6237\u73af\u5883\u4e0b\uff0c\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u53ef\u80fd\u540c\u65f6\u88ab\u591a\u4e2a\u7528\u6237\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\uff0c\u8fd9\u65f6\u5c31\u9700\u8981\u4f7f\u7528\u9501\uff08Lock\uff09\u673a\u5236\u6765\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u5e76\u53d1\u63a7\u5236\u3002MySQL \u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5176\u5185\u90e8\u5b9e\u73b0\u4e86\u591a\u79cd\u7c7b\u578b\u7684\u9501\u6765\u5b9e\u73b0\u6570\u636e\u7684\u5e76\u53d1\u63a7\u5236\u3002\u672c\u6587\u5c06\u5bf9 MySQL \u9501\u7684\u5185\u90e8\u5b9e\u73b0\u8fdb\u884c\u89e3\u6790\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

\u4e00\u3001MySQL \u9501\u7684\u57fa\u672c\u6982\u5ff5\u548c\u5206\u7c7b\u65b9\u5f0f
MySQL \u4e2d\u7684\u9501\u4e3b\u8981\u5206\u4e3a\u4e24\u7c7b\uff1a\u5171\u4eab\u9501\uff08Shared Lock\uff09\u548c\u6392\u4ed6\u9501\uff08Exclusive Lock\uff09\u3002<\/p>\n

    \n
  1. \u5171\u4eab\u9501\uff08\u8bfb\u9501\uff09\uff1a\u591a\u4e2a\u7528\u6237\u53ef\u4ee5\u540c\u65f6\u83b7\u53d6\u76f8\u540c\u7684\u5171\u4eab\u9501\uff0c\u7528\u4e8e\u4fdd\u62a4\u8bfb\u64cd\u4f5c\u3002\u5176\u4ed6\u5e76\u53d1\u7528\u6237\u4e5f\u53ef\u4ee5\u540c\u65f6\u83b7\u5f97\u5171\u4eab\u9501\uff0c\u4f46\u4e0d\u80fd\u8fdb\u884c\u5199\u64cd\u4f5c\u3002<\/li>\n
  2. \u6392\u4ed6\u9501\uff08\u5199\u9501\uff09\uff1a\u540c\u4e00\u65f6\u95f4\u53ea\u80fd\u6709\u4e00\u4e2a\u7528\u6237\u83b7\u5f97\u6392\u4ed6\u9501\uff0c\u7528\u4e8e\u4fdd\u62a4\u5199\u64cd\u4f5c\u3002\u5176\u4ed6\u5e76\u53d1\u7528\u6237\u65e0\u6cd5\u540c\u65f6\u83b7\u53d6\u6392\u4ed6\u9501\u3002<\/li>\n<\/ol>\n

    \u4e8c\u3001MySQL \u9501\u7684\u5185\u90e8\u5b9e\u73b0\u673a\u5236<\/p>\n

      \n
    1. \u8868\u9501\uff08Table Lock\uff09\uff1a\u8868\u9501\u662f\u6700\u57fa\u672c\u7684\u9501\u673a\u5236\uff0c\u5176\u7c92\u5ea6\u6700\u5927\uff0c\u88ab\u9501\u4f4f\u7684\u662f\u6574\u5f20\u8868\u3002\u5f53\u4e00\u4e2a\u7528\u6237\u83b7\u53d6\u4e86\u8868\u9501\u4e4b\u540e\uff0c\u5176\u4ed6\u7528\u6237\u65e0\u6cd5\u540c\u65f6\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u3002
      \u4ee3\u7801\u793a\u4f8b\uff1a
      — \u8bf7\u6c42\u8868\u9501
      LOCK TABLES table_name READ\/WRITE;
      — \u91ca\u653e\u8868\u9501
      UNLOCK TABLES;<\/li>\n
    2. \u884c\u9501\uff08Row Lock\uff09\uff1a\u884c\u9501\u7684\u7c92\u5ea6\u6700\u5c0f\uff0c\u88ab\u9501\u4f4f\u7684\u662f\u8868\u4e2d\u7684\u67d0\u4e00\u884c\u3002\u5f53\u67d0\u4e2a\u7528\u6237\u83b7\u53d6\u4e86\u884c\u9501\u4e4b\u540e\uff0c\u5176\u4ed6\u7528\u6237\u53ea\u80fd\u5bf9\u5176\u4ed6\u884c\u8fdb\u884c\u64cd\u4f5c\uff0c\u4e0d\u80fd\u540c\u65f6\u5bf9\u540c\u4e00\u884c\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u3002
      \u4ee3\u7801\u793a\u4f8b\uff1a
      — \u8bf7\u6c42\u884c\u9501
      SELECT * FROM table_name WHERE id = 1 FOR UPDATE;
      — \u91ca\u653e\u884c\u9501
      COMMIT;<\/li>\n
    3. \u9875\u9762\u9501\uff08Page Lock\uff09\uff1a\u9875\u9762\u9501\u662f\u8868\u9501\u548c\u884c\u9501\u4e4b\u95f4\u7684\u4e00\u79cd\u6298\u8877\uff0c\u5b83\u4ee5\u6570\u636e\u9875\u9762\u4e3a\u5355\u4f4d\u8fdb\u884c\u9501\u5b9a\u3002\u5f53\u4e00\u4e2a\u7528\u6237\u83b7\u53d6\u4e86\u9875\u9762\u9501\u4e4b\u540e\uff0c\u5176\u4ed6\u7528\u6237\u65e0\u6cd5\u540c\u65f6\u5bf9\u8be5\u9875\u9762\u5185\u7684\u884c\u8fdb\u884c\u64cd\u4f5c\u3002
      \u4ee3\u7801\u793a\u4f8b\uff1a
      — \u8bf7\u6c42\u9875\u9762\u9501\uff08Innodb \u5f15\u64ce\u652f\u6301\uff09
      LOCK TABLES table_name WHERE id = 1;
      — \u91ca\u653e\u9875\u9762\u9501
      UNLOCK TABLES;<\/li>\n<\/ol>\n

      \u4e09\u3001MySQL \u9501\u7684\u4f7f\u7528\u573a\u666f\u548c\u6ce8\u610f\u4e8b\u9879<\/p>\n

        \n
      1. \u5728\u6570\u636e\u5e93\u8bbe\u8ba1\u65f6\uff0c\u9700\u8981\u6839\u636e\u5b9e\u9645\u9700\u6c42\u548c\u5e76\u53d1\u64cd\u4f5c\u60c5\u51b5\u9009\u62e9\u5408\u9002\u7684\u9501\u673a\u5236\u3002\u8f83\u8f7b\u91cf\u7ea7\u7684\u9501\u673a\u5236\u53ef\u4ee5\u63d0\u9ad8\u5e76\u53d1\u64cd\u4f5c\u6027\u80fd\uff0c\u4f46\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u4e00\u81f4\u6027\u95ee\u9898\uff1b\u8f83\u91cd\u91cf\u7ea7\u7684\u9501\u673a\u5236\u53ef\u4ee5\u786e\u4fdd\u6570\u636e\u4e00\u81f4\u6027\uff0c\u4f46\u53ef\u80fd\u964d\u4f4e\u5e76\u53d1\u6027\u80fd\u3002<\/li>\n
      2. \u5728\u7f16\u5199 SQL \u8bed\u53e5\u65f6\uff0c\u9700\u8981\u5408\u7406\u5229\u7528\u9501\u673a\u5236\u6765\u63a7\u5236\u5e76\u53d1\u8bbf\u95ee\u3002\u4f8b\u5982\uff0c\u5728\u8fdb\u884c\u4e00\u4e9b\u590d\u6742\u7684\u6570\u636e\u66f4\u65b0\u64cd\u4f5c\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e8b\u52a1\uff08Transaction\uff09\u548c\u6392\u4ed6\u9501\u6765\u4fdd\u8bc1\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002
        \u4ee3\u7801\u793a\u4f8b\uff1a
        START TRANSACTION;
        LOCK TABLES table_name WRITE;
        — \u6267\u884c\u66f4\u65b0\u64cd\u4f5c
        UPDATE table_name SET column = new_value WHERE condition;
        — \u91ca\u653e\u9501
        UNLOCK TABLES;
        COMMIT;<\/li>\n<\/ol>\n

        \u7ed3\u8bba\uff1a
        MySQL \u9501\u7684\u5185\u90e8\u5b9e\u73b0\u662f\u4fdd\u8bc1\u6570\u636e\u5e93\u6570\u636e\u4e00\u81f4\u6027\u548c\u5e76\u53d1\u63a7\u5236\u7684\u91cd\u8981\u5de5\u5177\u3002\u6839\u636e\u5b9e\u9645\u9700\u6c42\u548c\u5e76\u53d1\u64cd\u4f5c\u60c5\u51b5\uff0c\u9009\u62e9\u5408\u9002\u7684\u9501\u673a\u5236\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u6027\u80fd\u548c\u6570\u636e\u4e00\u81f4\u6027\u3002\u5728\u7f16\u5199 SQL \u8bed\u53e5\u65f6\uff0c\u5408\u7406\u4f7f\u7528\u9501\u673a\u5236\u53ef\u4ee5\u786e\u4fdd\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u6587\u7ae0\u901a\u8fc7\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u8bb2\u89e3\u4e86 MySQL \u9501\u7684\u57fa\u672c\u6982\u5ff5\u548c\u5185\u90e8\u5b9e\u73b0\u673a\u5236\uff0c\u5e0c\u671b\u5bf9\u8bfb\u8005\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n

        \u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u89e3\u6790 MySQL \u9501\u7684\u5185\u90e8\u5b9e\u73b0\u539f\u7406\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u5427\uff01<\/p>\n

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

        \u89e3\u6790 MySQL \u9501\u7684\u5185\u90e8\u5b9e\u73b0\u539f...<\/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-199622","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199622","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=199622"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199622\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199622"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199622"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}