{"id":199623,"date":"2025-05-06T10:26:02","date_gmt":"2025-05-06T02:26:02","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199623\/"},"modified":"2025-05-06T10:26:02","modified_gmt":"2025-05-06T02:26:02","slug":"mysql%e9%94%81%e7%9a%84%e7%a7%8d%e7%b1%bb%e5%8f%8a%e5%85%b6%e5%ba%94%e7%94%a8%e9%a2%86%e5%9f%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199623\/","title":{"rendered":"MySQL\u9501\u7684\u79cd\u7c7b\u53ca\u5176\u5e94\u7528\u9886\u57df"},"content":{"rendered":"

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

MySQL\u9501\u7684\u79cd\u7c7b\u53ca\u5176\u5e94\u7528\u9886\u57df<\/h1>\n

\u5927\u5bb6\u597d\uff0c\u4eca\u5929\u672c\u4eba\u7ed9\u5927\u5bb6\u5e26\u6765\u6587\u7ae0\uff0c\u6587\u4e2d\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230\uff0c\u5982\u679c\u4f60\u5bf9\u65b9\u9762\u7684\u77e5\u8bc6\u70b9\u611f\u5174\u8da3\uff0c\u90a3\u5c31\u8bf7\u5404\u4f4d\u670b\u53cb\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427~\u5e0c\u671b\u80fd\u771f\u6b63\u5e2e\u5230\u4f60\u4eec\uff0c\u8c22\u8c22\uff01<\/p>\n

MySQL \u9501\u7684\u5206\u7c7b\u4e0e\u5e94\u7528<\/p>\n

\u5728\u5e76\u53d1\u8bbf\u95ee\u6570\u636e\u5e93\u7684\u60c5\u51b5\u4e0b\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\uff0cMySQL \u63d0\u4f9b\u4e86\u9501\u673a\u5236\u3002\u9501\u53ef\u4ee5\u5c06\u5173\u952e\u8d44\u6e90\u8fdb\u884c\u4fdd\u62a4\uff0c\u63a7\u5236\u5e76\u53d1\u4e8b\u52a1\u5bf9\u6570\u636e\u7684\u8bbf\u95ee\u548c\u4fee\u6539\u3002\u672c\u6587\u5c06\u4ecb\u7ecd MySQL \u9501\u7684\u5206\u7c7b\u548c\u5e94\u7528\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

\u4e00\u3001MySQL \u9501\u7684\u5206\u7c7b<\/p>\n

MySQL \u9501\u53ef\u4ee5\u5206\u4e3a\u5171\u4eab\u9501\uff08Shared Lock\uff09\u548c\u6392\u4ed6\u9501\uff08Exclusive Lock\uff09\u3002\u5171\u4eab\u9501\u548c\u6392\u4ed6\u9501\u662f\u4e92\u65a5\u7684\uff0c\u4e0d\u80fd\u540c\u65f6\u5b58\u5728\u4e8e\u540c\u4e00\u4e2a\u8d44\u6e90\u4e0a\u3002\u5171\u4eab\u9501\u7528\u4e8e\u8bfb\u64cd\u4f5c\uff0c\u5141\u8bb8\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u83b7\u53d6\u540c\u4e00\u8d44\u6e90\u7684\u5171\u4eab\u9501\uff1b\u6392\u4ed6\u9501\u7528\u4e8e\u5199\u64cd\u4f5c\uff0c\u53ea\u5141\u8bb8\u4e00\u4e2a\u4e8b\u52a1\u83b7\u53d6\u67d0\u4e2a\u8d44\u6e90\u7684\u6392\u4ed6\u9501\u3002<\/p>\n

\u5728 MySQL \u4e2d\u5e38\u7528\u7684\u9501\u6709\u4ee5\u4e0b\u4e09\u79cd\uff1a<\/p>\n

    \n
  1. \u8868\u7ea7\u9501\uff08Table-level Locks\uff09\uff1a\u8868\u7ea7\u9501\u662f\u5bf9\u6574\u4e2a\u8868\u8fdb\u884c\u52a0\u9501\uff0c\u53ef\u4ee5\u5206\u4e3a\u8bfb\u9501\u548c\u5199\u9501\u3002\u8bfb\u9501\u662f\u5171\u4eab\u9501\uff0c\u591a\u4e2a\u4e8b\u52a1\u53ef\u4ee5\u540c\u65f6\u83b7\u53d6\u8bfb\u9501\uff1b\u5199\u9501\u662f\u6392\u4ed6\u9501\uff0c\u53ea\u6709\u4e00\u4e2a\u4e8b\u52a1\u53ef\u4ee5\u83b7\u53d6\u5199\u9501\u3002<\/li>\n
  2. \u884c\u7ea7\u9501\uff08Row-level Locks\uff09\uff1a\u884c\u7ea7\u9501\u662f\u5bf9\u8868\u4e2d\u7684\u884c\u8fdb\u884c\u52a0\u9501\uff0c\u53ea\u6709\u5bf9\u67d0\u4e00\u884c\u8fdb\u884c\u64cd\u4f5c\u7684\u4e8b\u52a1\u624d\u4f1a\u83b7\u53d6\u8be5\u884c\u7684\u9501\u3002\u884c\u7ea7\u9501\u53ef\u4ee5\u7cbe\u786e\u63a7\u5236\uff0c\u5e76\u53d1\u4e8b\u52a1\u5bf9\u6570\u636e\u7684\u8bbf\u95ee\uff0c\u4f46\u662f\u884c\u7ea7\u9501\u7684\u7c92\u5ea6\u8f83\u5c0f\uff0c\u4f1a\u589e\u52a0\u9501\u7684\u6570\u91cf\u548c\u5f00\u9500\u3002<\/li>\n
  3. \u9875\u7ea7\u9501\uff08Page-level Locks\uff09\uff1a\u9875\u7ea7\u9501\u662f\u5bf9\u8868\u4e2d\u7684\u9875\u8fdb\u884c\u52a0\u9501\uff0c\u6bcf\u4e2a\u9875\u7684\u5927\u5c0f\u4e3a16KB\u3002\u9875\u7ea7\u9501\u5728\u8868\u7ea7\u9501\u548c\u884c\u7ea7\u9501\u4e4b\u95f4\uff0c\u53ef\u4ee5\u51cf\u5c11\u9501\u7684\u6570\u91cf\u548c\u5f00\u9500\u3002\u4f46\u662f\u9875\u7ea7\u9501\u7684\u7c92\u5ea6\u63a7\u5236\u76f8\u5bf9\u884c\u7ea7\u9501\u8f83\u5dee\uff0c\u6709\u53ef\u80fd\u5bfc\u81f4\u9501\u51b2\u7a81\u3002<\/li>\n<\/ol>\n

    \u4e8c\u3001MySQL \u9501\u7684\u5e94\u7528<\/p>\n

      \n
    1. \u8868\u7ea7\u9501\u5e94\u7528\u793a\u4f8b\uff1a<\/li>\n<\/ol>\n
      -- \u4e8b\u52a11\nSTART TRANSACTION;\nLOCK TABLES table_name WRITE;\n-- \u6267\u884c\u5199\u64cd\u4f5c\nCOMMIT;\n\n-- \u4e8b\u52a12\nSTART TRANSACTION;\nLOCK TABLES table_name READ;\n-- \u6267\u884c\u8bfb\u64cd\u4f5c\nCOMMIT;<\/pre>\n
        \n
      1. \u884c\u7ea7\u9501\u5e94\u7528\u793a\u4f8b\uff1a<\/li>\n<\/ol>\n
        -- \u4e8b\u52a11\nSTART TRANSACTION;\nSELECT * FROM table_name WHERE id = 1 LOCK IN SHARE MODE;\n-- \u8bfb\u53d6\u6570\u636e\nCOMMIT;\n\n-- \u4e8b\u52a12\nSTART TRANSACTION;\nSELECT * FROM table_name WHERE id = 1 FOR UPDATE;\n-- \u66f4\u65b0\u6570\u636e\nCOMMIT;<\/pre>\n
          \n
        1. \u9875\u7ea7\u9501\u5e94\u7528\u793a\u4f8b\uff1a<\/li>\n<\/ol>\n
          -- \u4e8b\u52a11\nSTART TRANSACTION;\nSELECT * FROM table_name WHERE id BETWEEN 1 AND 100 LOCK IN SHARE MODE;\n-- \u8bfb\u53d6\u6570\u636e\nCOMMIT;\n\n-- \u4e8b\u52a12\nSTART TRANSACTION;\nSELECT * FROM table_name WHERE id BETWEEN 1 AND 100 FOR UPDATE;\n-- \u66f4\u65b0\u6570\u636e\nCOMMIT;<\/pre>\n
          \u4e09\u3001\u603b\u7ed3<\/p>\n
          MySQL \u9501\u7684\u5206\u7c7b\u4e0e\u5e94\u7528\u662f\u6570\u636e\u5e93\u5e76\u53d1\u63a7\u5236\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\u3002\u6839\u636e\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u9501\u673a\u5236\uff0c\u5e76\u5408\u7406\u4f7f\u7528\u9501\u53ef\u4ee5\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u5e76\u53d1\u6027\u80fd\u548c\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u573a\u666f\u8fdb\u884c\u9501\u7684\u9009\u62e9\u548c\u4f7f\u7528\uff0c\u907f\u514d\u6b7b\u9501\u548c\u6027\u80fd\u95ee\u9898\u7684\u53d1\u751f\u3002<\/p>\n
          \u5e0c\u671b\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\uff0c\u53ef\u4ee5\u5e2e\u52a9\u8bfb\u8005\u7406\u89e3 MySQL \u9501\u7684\u5206\u7c7b\u548c\u5e94\u7528\uff0c\u5e76\u4ee5\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u66f4\u597d\u5730\u638c\u63e1\u9501\u7684\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n
          \u4eca\u5929\u5173\u4e8e\u300aMySQL\u9501\u7684\u79cd\u7c7b\u53ca\u5176\u5e94\u7528\u9886\u57df\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n
          \n
          \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
          MySQL\u9501\u7684\u79cd\u7c7b\u53ca\u5176\u5e94\u7528\u9886\u57df ...<\/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-199623","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199623","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=199623"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199623\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199623"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199623"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}