{"id":452,"date":"2023-05-16T01:09:49","date_gmt":"2023-05-15T17:09:49","guid":{"rendered":"http:\/\/mapleleaf666.vip\/?p=452"},"modified":"2023-05-16T01:09:50","modified_gmt":"2023-05-15T17:09:50","slug":"raft%e7%ae%97%e6%b3%95%e6%a6%82%e8%a7%88","status":"publish","type":"post","link":"http:\/\/mapleleaf666.vip\/?p=452","title":{"rendered":"Raft\u7b97\u6cd5\u6982\u89c8"},"content":{"rendered":"\n

\u5728\u5927\u6570\u636e\u7684\u5b66\u4e60\u8fc7\u7a0b\u4e2d\uff0c\u5b66\u5230\u4e86\u5206\u5e03\u5f0f\u4e00\u81f4\u6027\u7b97\u6cd5Raft\uff0c\u56e0\u6b64\u5199\u4e0b\u672c\u6587\u8bb0\u5f55\u5b66\u4e60\u8fc7\u7a0b\u3002<\/p>\n\n\n\n

\u7b97\u6cd5\u80cc\u666f<\/h2>\n\n\n\n

\u4e00\u81f4\u6027\u7b97\u6cd5\u5141\u8bb8\u4e00\u7ec4\u673a\u5668\u50cf\u4e00\u4e2a\u6574\u4f53\u4e00\u6837\u5de5\u4f5c\uff0c\u5373\u4f7f\u5176\u4e2d\u4e00\u4e9b\u673a\u5668\u51fa\u73b0\u6545\u969c\u4e5f\u80fd\u591f\u7ee7\u7eed\u5de5\u4f5c\u4e0b\u53bb\u3002\u6b63\u56e0\u4e3a\u5982\u6b64\uff0c\u4e00\u81f4\u6027\u7b97\u6cd5\u5728\u6784\u5efa\u53ef\u4fe1\u8d56\u7684\u5927\u89c4\u6a21\u8f6f\u4ef6\u7cfb\u7edf\u4e2d\u626e\u6f14\u7740\u91cd\u8981\u7684\u89d2\u8272\u3002\u5728\u8fc7\u53bb\u7684 10 \u5e74\u91cc\uff0cPaxos \u7b97\u6cd5\u7edf\u6cbb\u7740\u4e00\u81f4\u6027\u7b97\u6cd5\u8fd9\u4e00\u9886\u57df\uff1a\u7edd\u5927\u591a\u6570\u7684\u5b9e\u73b0\u90fd\u662f\u57fa\u4e8e Paxos \u6216\u8005\u53d7\u5176\u5f71\u54cd\u3002\u540c\u65f6 Paxos \u4e5f\u6210\u4e3a\u4e86\u6559\u5b66\u9886\u57df\u91cc\u8bb2\u89e3\u4e00\u81f4\u6027\u95ee\u9898\u65f6\u7684\u793a\u4f8b\u3002<\/p>\n\n\n\n

\u4f46\u662f\u4e0d\u5e78\u7684\u662f\uff0c\u5c3d\u7ba1\u6709\u5f88\u591a\u5de5\u4f5c\u90fd\u5728\u5c1d\u8bd5\u964d\u4f4e\u5b83\u7684\u590d\u6742\u6027\uff0c\u4f46\u662f Paxos \u7b97\u6cd5\u4f9d\u7136\u5341\u5206\u96be\u4ee5\u7406\u89e3\u3002\u5e76\u4e14\uff0cPaxos \u81ea\u8eab\u7684\u7b97\u6cd5\u7ed3\u6784\u9700\u8981\u8fdb\u884c\u5927\u5e45\u7684\u4fee\u6539\u624d\u80fd\u591f\u5e94\u7528\u5230\u5b9e\u9645\u7684\u7cfb\u7edf\u4e2d\u3002\u8fd9\u4e9b\u90fd\u5bfc\u81f4\u4e86\u5de5\u4e1a\u754c\u548c\u5b66\u672f\u754c\u90fd\u5bf9 Paxos \u7b97\u6cd5\u611f\u5230\u5341\u5206\u5934\u75bc\u3002<\/p>\n\n\n\n

\u7531\u6b64\u66f4\u52a0\u5bb9\u6613\u7406\u89e3\u7684Raft\u7b97\u6cd5\u51fa\u73b0\u4e86\u3002Raft\u662f\u5de5\u7a0b\u4e0a\u4f7f\u7528\u8f83\u4e3a\u5e7f\u6cdb\u7684\u5f3a\u4e00\u81f4\u6027\u3001\u53bb\u4e2d\u5fc3\u5316\u3001\u9ad8\u53ef\u7528<\/strong>\u7684\u5206\u5e03\u5f0f\u534f\u8bae\u3002\u4e3a\u4e86\u8fbe\u5230\u6613\u4e8e\u7406\u89e3\u7684\u76ee\u6807\uff0craft\u505a\u4e86\u5f88\u591a\u52aa\u529b\uff0c\u5176\u4e2d\u6700\u4e3b\u8981\u662f\u4e24\u4ef6\u4e8b\u60c5\uff1a\u95ee\u9898\u5206\u89e3\u3001\u72b6\u6001\u7b80\u5316<\/strong>\u3002\u95ee\u9898\u5206\u89e3\u662f\u5c06”\u590d\u5236\u96c6\u4e2d\u8282\u70b9\u4e00\u81f4\u6027”\u8fd9\u4e2a\u590d\u6742\u7684\u95ee\u9898\u5212\u5206\u4e3a\u6570\u4e2a\u53ef\u4ee5\u88ab\u72ec\u7acb\u89e3\u91ca\u3001\u7406\u89e3\u3001\u89e3\u51b3\u7684\u5b50\u95ee\u9898\u3002\u72b6\u6001\u7b80\u5316\u5219\u662f\u5bf9\u7b97\u6cd5\u505a\u51fa\u4e00\u4e9b\u9650\u5236\uff0c\u51cf\u5c11\u9700\u8981\u8003\u8651\u7684\u72b6\u6001\u6570\uff0c\u4f7f\u5f97\u7b97\u6cd5\u66f4\u52a0\u6e05\u6670\uff0c\u66f4\u5c11\u7684\u4e0d\u786e\u5b9a\u6027\u3002<\/p>\n\n\n\n

raft\u5de5\u4f5c\u65f6\u4f1a\u5148\u9009\u4e3e\u51faleader\uff0cleader\u5b8c\u5168\u8d1f\u8d23\u65e5\u5fd7\u590d\u5236\u7684\u7ba1\u7406\u3002leader\u8d1f\u8d23\u63a5\u53d7\u6240\u6709\u5ba2\u6237\u7aef\u66f4\u65b0\u8bf7\u6c42\uff0c\u7136\u540e\u590d\u5236\u5230follower\u8282\u70b9\uff0c\u5e76\u5728\u201c\u5b89\u5168\u201d\u7684\u65f6\u5019\u6267\u884c\u8fd9\u4e9b\u8bf7\u6c42\u3002\u5982\u679cleader\u6545\u969c\uff0cfollowers\u4f1a\u91cd\u65b0\u9009\u4e3e\u51fa\u65b0\u7684leader\u3002<\/p>\n\n\n\n

\u6838\u5fc3\u673a\u5236\uff1a\u9886\u5bfc\u4eba\u9009\u4e3e<\/h2>\n\n\n\n

\u57fa\u672c\u6982\u5ff5<\/h3>\n\n\n\n

raft\u534f\u8bae\u4e2d\uff0c\u4e00\u4e2a\u8282\u70b9\u4efb\u4e00\u65f6\u523b\u5904\u4e8e\u4ee5\u4e0b\u4e09\u4e2a\u72b6\u6001\u4e4b\u4e00\uff1a<\/p>\n\n\n\n

    \n
  • leader\uff08\u9886\u5bfc\u4eba\uff09<\/li>\n\n\n\n
  • follower\uff08\u8ddf\u968f\u4eba\uff09<\/li>\n\n\n\n
  • candidate\uff08\u5019\u9009\u4eba\uff09<\/li>\n<\/ul>\n\n\n\n

    \u4e0b\u9762\u7684\u72b6\u6001\u8f6c\u79fb\u56fe\u80fd\u5f88\u76f4\u89c2\u7684\u76f4\u5230\u8fd9\u4e09\u4e2a\u72b6\u6001\u7684\u533a\u522b<\/p>\n\n\n\n

    \"\"<\/div><\/figure>\n\n\n\n

    \u53ef\u4ee5\u770b\u51fa\u6240\u6709\u8282\u70b9\u542f\u52a8\u65f6\u90fd\u662ffollower\u72b6\u6001\uff1b\u5728\u4e00\u6bb5\u65f6\u95f4\u5185\u5982\u679c\u6ca1\u6709\u6536\u5230\u6765\u81ealeader\u7684\u5fc3\u8df3\uff0c\u5c31\u4ecefollower\u5207\u6362\u5230candidate\uff0c\u53d1\u8d77\u9009\u4e3e\uff1b\u5982\u679c\u6536\u5230\u5927\u591a\u6570\u7684\u9009\u7968\uff08\u542b\u81ea\u5df1\u7684\u4e00\u7968\uff09\u5219\u5207\u6362\u5230leader\u72b6\u6001\uff1b\u5982\u679c\u53d1\u73b0\u5176\u4ed6\u8282\u70b9\u6bd4\u81ea\u5df1\u66f4\u65b0\uff0c\u5219\u4e3b\u52a8\u5207\u6362\u5230follower\u3002<\/p>\n\n\n\n

    \u603b\u4e4b\uff0c\u7cfb\u7edf\u4e2d\u6700\u591a\u53ea\u6709\u4e00\u4e2aleader<\/strong>\uff0c\u5982\u679c\u5728\u4e00\u6bb5\u65f6\u95f4\u91cc\u53d1\u73b0\u6ca1\u6709leader\uff0c\u5219\u5927\u5bb6\u901a\u8fc7\u9009\u4e3e-\u6295\u7968\u9009\u51faleader\u3002leader\u4f1a\u4e0d\u505c\u7684\u7ed9follower\u53d1\u5fc3\u8df3\u6d88\u606f\uff0c\u8868\u660e\u81ea\u5df1\u7684\u5b58\u6d3b\u72b6\u6001\u3002\u5982\u679cleader\u6545\u969c\uff0c\u90a3\u4e48follower\u4f1a\u8f6c\u6362\u6210candidate\uff0c\u91cd\u65b0\u9009\u51faleader\u3002<\/p>\n\n\n\n

    \u9009\u4e3e\u65b9\u5f0f<\/h3>\n\n\n\n

    \u4ece\u5148\u524d\u5185\u5bb9\u53ef\u4ee5\u770b\u51fa\uff0c\u54ea\u4e2a\u8282\u70b9\u505aleader\u662f\u5927\u5bb6\u6295\u7968\u9009\u4e3e\u51fa\u6765\u7684\uff0c\u6bcf\u4e2aleader\u5de5\u4f5c\u4e00\u6bb5\u65f6\u95f4\uff0c\u7136\u540e\u9009\u51fa\u65b0\u7684leader\u7ee7\u7eed\u8d1f\u8d23\u3002\u8fd9\u8ddf\u6c11\u4e3b\u793e\u4f1a\u7684\u9009\u4e3e\u5f88\u50cf\uff0c\u6bcf\u4e00\u5c4a\u65b0\u7684\u5c65\u804c\u671f\u79f0\u4e4b\u4e3a\u4e00\u5c4a\u4efb\u671f\uff0c\u5728raft\u534f\u8bae\u4e2d\uff0c\u4e5f\u662f\u8fd9\u6837\u7684\uff0c\u5bf9\u5e94\u7684\u672f\u8bed\u53ebterm\u3002<\/p>\n\n\n\n

    term\uff08\u4efb\u671f\uff09\u4ee5\u9009\u4e3e\uff08election\uff09\u5f00\u59cb\uff0c\u7136\u540e\u5c31\u662f\u4e00\u6bb5\u6216\u957f\u6216\u77ed\u7684\u7a33\u5b9a\u5de5\u4f5c\u671f\uff08normal Operation\uff09\u3002\u4ece\u4e0a\u56fe\u53ef\u4ee5\u770b\u5230\uff0c\u4efb\u671f\u662f\u9012\u589e\u7684\uff0c\u8fd9\u5c31\u5145\u5f53\u4e86\u903b\u8f91\u65f6\u949f\u7684\u4f5c\u7528\uff1b\u53e6\u5916\uff0cterm 3\u5c55\u793a\u4e86\u4e00\u79cd\u60c5\u51b5\uff0c\u5c31\u662f\u8bf4\u6ca1\u6709\u9009\u4e3e\u51faleader\u5c31\u7ed3\u675f\u4e86\uff0c\u7136\u540e\u4f1a\u53d1\u8d77\u65b0\u7684\u9009\u4e3e\uff0c\u540e\u9762\u4f1a\u89e3\u91ca\u8fd9\u79cdsplit vote\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n

    \"\"<\/div><\/figure>\n\n\n\n

    \u9009\u4e3e\u8fc7\u7a0b<\/h3>\n\n\n\n

    \u53d1\u8d77\u9009\u4e3e\uff1a<\/p>\n\n\n\n

      \n
    1. \u589e\u52a0\u8282\u70b9\u672c\u5730\u7684 current term \uff0c\u5207\u6362\u5230candidate\u72b6\u6001<\/li>\n\n\n\n
    2. \u6295\u81ea\u5df1\u4e00\u7968<\/li>\n\n\n\n
    3. \u5e76\u884c\u7ed9\u5176\u4ed6\u8282\u70b9\u53d1\u9001 RequestVote RPCs<\/li>\n\n\n\n
    4. \u7b49\u5f85\u5176\u4ed6\u8282\u70b9\u7684\u56de\u590d<\/li>\n<\/ol>\n\n\n\n

      \u9009\u4e3e\u7ed3\u679c\uff1a<\/p>\n\n\n\n

        \n
      1. \u6536\u5230\u5927\u591a\u6570\u6295\u7968\uff08\u542b\u81ea\u5df1\u7684\u4e00\u7968\uff09\uff0c\u5219\u8d62\u5f97\u9009\u4e3e\uff0c\u6210\u4e3aleader\uff0c\u6b64\u65f6\u7acb\u523b\u7ed9\u6240\u6709\u8282\u70b9\u53d1\u6d88\u606f\uff0c\u907f\u514d\u5176\u4f59\u8282\u70b9\u89e6\u53d1\u65b0\u7684\u9009\u4e3e\u3002<\/li>\n\n\n\n
      2. \u88ab\u544a\u77e5\u522b\u4eba\u5df2\u5f53\u9009\uff0c\u90a3\u4e48\u81ea\u884c\u5207\u6362\u5230follower<\/li>\n\n\n\n
      3. \u4e00\u6bb5\u65f6\u95f4\u5185\u6ca1\u6709\u6536\u5230majority\u6295\u7968\uff0c\u5219\u4fdd\u6301candidate\u72b6\u6001\uff0c\u91cd\u65b0\u53d1\u51fa\u9009\u4e3e<\/li>\n<\/ol>\n\n\n\n

        \u6295\u7968\u89c4\u5219\uff1a<\/p>\n\n\n\n

          \n
        1. \u5728\u4efb\u4e00\u4efb\u671f\u5185\uff0c\u5355\u4e2a\u8282\u70b9\u6700\u591a\u53ea\u80fd\u6295\u4e00\u7968<\/li>\n\n\n\n
        2. \u5019\u9009\u4eba\u77e5\u9053\u7684\u4fe1\u606f\u4e0d\u80fd\u6bd4\u81ea\u5df1\u7684\u5c11<\/li>\n\n\n\n
        3. first-come-first-served \u5148\u6765\u5148\u5f97<\/li>\n<\/ol>\n\n\n\n

          \u65e5\u5fd7\u590d\u5236<\/h2>\n\n\n\n

          \u57fa\u672c\u6982\u5ff5<\/h3>\n\n\n\n

          \u5f53\u6709\u4e86leader\uff0c\u7cfb\u7edf\u5e94\u8be5\u8fdb\u5165\u5bf9\u5916\u5de5\u4f5c\u671f\u4e86\u3002\u5ba2\u6237\u7aef\u7684\u4e00\u5207\u8bf7\u6c42\u6765\u53d1\u9001\u5230leader\uff0cleader\u6765\u8c03\u5ea6\u8fd9\u4e9b\u5e76\u53d1\u8bf7\u6c42\u7684\u987a\u5e8f\uff0c\u5e76\u4e14\u4fdd\u8bc1leader\u4e0efollowers\u72b6\u6001\u7684\u4e00\u81f4\u6027\u3002raft\u4e2d\u7684\u505a\u6cd5\u662f\uff0c\u5c06\u8fd9\u4e9b\u8bf7\u6c42\u4ee5\u53ca\u6267\u884c\u987a\u5e8f\u544a\u77e5followers\u3002leader\u548cfollowers\u4ee5\u76f8\u540c\u7684\u987a\u5e8f\u6765\u6267\u884c\u8fd9\u4e9b\u8bf7\u6c42\uff0c\u4fdd\u8bc1\u72b6\u6001\u4e00\u81f4\u3002<\/p>\n\n\n\n

          \u7531\u4e8e\u76f8\u540c\u7684\u521d\u59cb\u72b6\u6001\u548c\u76f8\u540c\u7684\u8f93\u5165\u4e00\u5b9a\u80fd\u5e26\u6765\u76f8\u540c\u7684\u7ed3\u675f\u72b6\u6001\uff0c\u6240\u4ee5\u5bf9\u4e8e\u8fd9\u79cd\u72b6\u6001\u7684\u8fc1\u79fb\u6211\u4eec\u53ef\u4ee5\u7528\u72b6\u6001\u673a\u6765\u8fdb\u884c\u8868\u793a\u3002\u590d\u5236\u72b6\u6001\u673a\u7684\u56fe\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n

          \"\"<\/div><\/figure>\n\n\n\n

          \u5728raft\u4e2d\uff0cleader\u5c06\u5ba2\u6237\u7aef\u8bf7\u6c42\u5c01\u88c5\u5230\u4e00\u4e2a\u4e2alog entry\uff0c\u5c06\u8fd9\u4e9blog entries\u590d\u5236\uff08replicate\uff09\u5230\u6240\u6709follower\u8282\u70b9\uff0c\u7136\u540e\u5927\u5bb6\u6309\u76f8\u540c\u987a\u5e8f\u5e94\u7528\uff08apply\uff09log entry\u4e2d\u7684command\uff0c\u5219\u72b6\u6001\u80af\u5b9a\u662f\u4e00\u81f4\u7684\u3002<\/p>\n\n\n\n

          \u6848\u4f8b\u5206\u6790<\/h3>\n\n\n\n
          \"\"<\/div><\/figure>\n\n\n\n

          \u4e0d\u96be\u770b\u5230\uff0c\u65e5\u5fd7\u7531\u987a\u5e8f\u7f16\u53f7\u7684log entry\u7ec4\u6210 \uff0c\u6bcf\u4e2alog entry\u9664\u4e86\u5305\u542b\u8bf7\u6c42\uff0c\u8fd8\u5305\u542b\u4ea7\u751f\u8be5log entry\u65f6\u7684leader term\u3002\u4ece\u4e0a\u56fe\u53ef\u4ee5\u770b\u5230\uff0c\u4e94\u4e2a\u8282\u70b9\u7684\u65e5\u5fd7\u5e76\u4e0d\u5b8c\u5168\u4e00\u81f4\uff0craft\u7b97\u6cd5\u4e3a\u4e86\u4fdd\u8bc1\u9ad8\u53ef\u7528\uff0c\u5e76\u4e0d\u662f\u5f3a\u4e00\u81f4\u6027\uff0c\u800c\u662f\u6700\u7ec8\u4e00\u81f4\u6027\uff0cleader\u4f1a\u4e0d\u65ad\u5c1d\u8bd5\u7ed9follower\u53d1log entries\uff0c\u76f4\u5230\u6240\u6709\u8282\u70b9\u7684log entries\u90fd\u76f8\u540c\u3002<\/p>\n\n\n\n

          \u5728\u4e0a\u9762\u7684\u6d41\u7a0b\u4e2d\uff0cleader\u53ea\u9700\u8981\u65e5\u5fd7\u88ab\u590d\u5236\u5230\u5927\u591a\u6570\u8282\u70b9\u5373\u53ef\u5411\u5ba2\u6237\u7aef\u8fd4\u56de\uff0c\u4e00\u65e6\u5411\u5ba2\u6237\u7aef\u8fd4\u56de\u6210\u529f\u6d88\u606f\uff0c\u90a3\u4e48\u7cfb\u7edf\u5c31\u5fc5\u987b\u4fdd\u8bc1log\uff08\u5176\u5b9e\u662flog\u6240\u5305\u542b\u7684\u8bf7\u6c42\uff09\u5728\u4efb\u4f55\u5f02\u5e38\u7684\u60c5\u51b5\u4e0b\u90fd\u4e0d\u4f1a\u53d1\u751f\u56de\u6eda\u3002\u8fd9\u91cc\u6709\u4e24\u4e2a\u8bcd\uff1acommit\uff08committed\uff09\uff0capply(applied)\uff0c\u524d\u8005\u662f\u6307\u65e5\u5fd7\u88ab\u590d\u5236\u5230\u4e86\u5927\u591a\u6570\u8282\u70b9\u540e\u65e5\u5fd7\u7684\u72b6\u6001\uff1b\u800c\u540e\u8005\u5219\u662f\u8282\u70b9\u5c06\u65e5\u5fd7\u5e94\u7528\u5230\u72b6\u6001\u673a\uff0c\u771f\u6b63\u5f71\u54cd\u5230\u8282\u70b9\u72b6\u6001\u3002<\/p>\n\n\n\n

          \u5b89\u5168\u6027<\/h2>\n\n\n\n

          \u9009\u4e3e\u5b89\u5168\u6027<\/h3>\n\n\n\n

          \u5373\u4efb\u4e00\u4efb\u671f\u5185\u6700\u591a\u4e00\u4e2aleader\u88ab\u9009\u51fa\u3002\u8fd9\u4e00\u70b9\u975e\u5e38\u91cd\u8981\uff0c\u5728\u4e00\u4e2a\u590d\u5236\u96c6\u4e2d\u4efb\u4f55\u65f6\u523b\u53ea\u80fd\u6709\u4e00\u4e2aleader\u3002\u7cfb\u7edf\u4e2d\u540c\u65f6\u6709\u591a\u4f59\u4e00\u4e2aleader\uff0c\u88ab\u79f0\u4e4b\u4e3a\u5206\u88c2\uff08 split\uff09\uff0c\u8fd9\u662f\u975e\u5e38\u4e25\u91cd\u7684\u95ee\u9898\uff0c\u4f1a\u5bfc\u81f4\u6570\u636e\u7684\u8986\u76d6\u4e22\u5931\u3002\u5728raft\u4e2d\uff0c\u4e24\u70b9\u4fdd\u8bc1\u4e86\u8fd9\u4e2a\u5c5e\u6027\uff1a<\/p>\n\n\n\n

            \n
          1. \u4e00\u4e2a\u8282\u70b9\u67d0\u4e00\u4efb\u671f\u5185\u6700\u591a\u53ea\u80fd\u6295\u4e00\u7968\uff1b<\/li>\n\n\n\n
          2. \u53ea\u6709\u83b7\u5f97majority\u6295\u7968\u7684\u8282\u70b9\u624d\u4f1a\u6210\u4e3aleader\u3002 <\/li>\n<\/ol>\n\n\n\n

            \u65e5\u5fd7\u5339\u914d\u6027<\/h3>\n\n\n\n

            \u5982\u679c\u4e24\u4e2a\u8282\u70b9\u4e0a\u7684\u67d0\u4e2alog entry\u7684log index\u76f8\u540c\u4e14term\u76f8\u540c\uff0c\u90a3\u4e48\u5728\u8be5index\u4e4b\u524d\u7684\u6240\u6709log entry\u5e94\u8be5\u90fd\u662f\u76f8\u540c\u7684\u3002\u4ed6\u7684\u5b9e\u73b0\u4f9d\u8d56\u4e8e\u4ee5\u4e0b\u4e24\u70b9\uff1a<\/p>\n\n\n\n

              \n
            1. leader\u5728\u67d0\u4e00term\u7684\u4efb\u4e00\u4f4d\u7f6e\u53ea\u4f1a\u521b\u5efa\u4e00\u4e2alog entry\uff0c\u4e14log entry\u662fappend-only\u3002<\/li>\n\n\n\n
            2. consistency check\u3002leader\u5728AppendEntries\u4e2d\u5305\u542b\u6700\u65b0log entry\u4e4b\u524d\u7684\u4e00\u4e2alog \u7684term\u548cindex\uff0c\u5982\u679cfollower\u5728\u5bf9\u5e94\u7684term index\u627e\u4e0d\u5230\u65e5\u5fd7\uff0c\u90a3\u4e48\u5c31\u4f1a\u544a\u77e5leader\u4e0d\u4e00\u81f4\u3002<\/li>\n<\/ol>\n\n\n\n

              \u9886\u5bfc\u4eba\u5b8c\u6574\u6027<\/h3>\n\n\n\n
                \n
              • \u5982\u679c\u4e00\u4e2alog entry\u5728\u67d0\u4e2a\u4efb\u671f\u88ab\u63d0\u4ea4\uff08committed\uff09\uff0c\u90a3\u4e48\u8fd9\u6761\u65e5\u5fd7\u4e00\u5b9a\u4f1a\u51fa\u73b0\u5728\u6240\u6709\u66f4\u9ad8term\u7684leader\u7684\u65e5\u5fd7\u91cc\u9762\u3002<\/li>\n\n\n\n
              • \u4e00\u4e2a\u65e5\u5fd7\u88ab\u590d\u5236\u5230majority\u8282\u70b9\u624d\u7b97committed<\/li>\n\n\n\n
              • \u4e00\u4e2a\u8282\u70b9\u5f97\u5230majority\u7684\u6295\u7968\u624d\u80fd\u6210\u4e3aleader\uff0c\u800c\u8282\u70b9A\u7ed9\u8282\u70b9B\u6295\u7968\u7684\u5176\u4e2d\u4e00\u4e2a\u524d\u63d0\u662f\uff0cB\u7684\u65e5\u5fd7\u4e0d\u80fd\u6bd4A\u7684\u65e5\u5fd7\u65e7\u3002<\/li>\n\n\n\n
              • raft\u4e0e\u5176\u4ed6\u534f\u8bae\u4e0d\u540c\uff0craft\u59cb\u7ec8\u4fdd\u8bc1leader\u5305\u542b\u6700\u65b0\u7684\u5df2\u63d0\u4ea4\u7684\u65e5\u5fd7\uff0c\u56e0\u6b64leader\u4e0d\u4f1a\u4ecefollower catchup\u65e5\u5fd7\uff0c\u8fd9\u4e5f\u5927\u5927\u7b80\u5316\u4e86\u7cfb\u7edf\u7684\u590d\u6742\u5ea6\u3002<\/li>\n<\/ul>\n\n\n\n

                \u72b6\u6001\u673a\u5b89\u5168\u6027<\/h3>\n\n\n\n

                \u5982\u679c\u8282\u70b9\u5c06\u67d0\u4e00\u4f4d\u7f6e\u7684log entry\u5e94\u7528\u5230\u4e86\u72b6\u6001\u673a\uff0c\u90a3\u4e48\u5176\u4ed6\u8282\u70b9\u5728\u540c\u4e00\u4f4d\u7f6e\u4e0d\u80fd\u5e94\u7528\u4e0d\u540c\u7684\u65e5\u5fd7\u3002\u7b80\u5355\u70b9\u6765\u8bf4\uff0c\u6240\u6709\u8282\u70b9\u5728\u540c\u4e00\u4f4d\u7f6e\uff08index in log entries\uff09\u5e94\u8be5\u5e94\u7528\u540c\u6837\u7684\u65e5\u5fd7\u3002<\/p>\n\n\n\n

                \u9519\u8bef\u5904\u7406<\/h2>\n\n\n\n

                node crash<\/h3>\n\n\n\n
                \"\"<\/div><\/figure>\n\n\n\n

                leader\u3001follower\u90fd\u53ef\u80fdcrash\uff0c\u90a3\u4e48follower\u7ef4\u62a4\u7684\u65e5\u5fd7\u4e0eleader\u76f8\u6bd4\u53ef\u80fd\u51fa\u73b0\u4ee5\u4e0b\u60c5\u51b5\uff1a
                1. \u6bd4leader\u65e5\u5fd7\u5c11\uff0c\u5982\u5de6\u56fe\u4e2d\u7684ab
                2. \u6bd4leader\u65e5\u5fd7\u591a\uff0c\u5982\u5de6\u56fe\u4e2d\u7684cd
                3. \u67d0\u4e9b\u4f4d\u7f6e\u6bd4leader\u591a\uff0c\u67d0\u4e9b\u65e5\u5fd7\u6bd4leader\u5c11\uff0c\u5982ef\uff08\u591a\u5c11\u662f\u9488\u5bf9\u67d0\u4e00\u4efb\u671f\u800c\u8a00\uff09<\/p>\n\n\n\n

                \u5bf9\u4e8e\u6bd4leader\u65e5\u5fd7\u5c11\u7684\u60c5\u51b5\u6bd4\u8f83\u5bb9\u6613\u7406\u89e3\uff0c\u53ef\u80fd\u662f\u51fa\u4e8e\u7f51\u7edc\u6545\u969c\uff0c\u8282\u70b9\u6ca1\u6709\u6536\u5230leader\u53d1\u51fa\u7684appendEntry\u7684\u6d88\u606f\uff1b\u5bf9\u4e8e\u6bd4leader\u591a\u7684\u60c5\u51b5\uff0c\u53ef\u80fd\u662f\u7531\u4e8e\u8be5\u8282\u70b9\u66fe\u7ecf\u5f53\u9009\u8fc7leader\uff0c\u4f46\u662f\u5b83\u8fd8\u6ca1\u6709\u6765\u5f97\u53ca\u628a\u81ea\u5df1\u6536\u5230\u7684\u547d\u4ee4\u53d1\u5e03\u51fa\u53bb\uff0c\u5c31\u5df2\u7ecf\u6302\u4e86\uff0c\u6240\u4ee5\u53ea\u6709\u5b83\u81ea\u5df1\u4fdd\u5b58\u4e86\u8fd9\u4e9b\u6d88\u606f\uff1b\u5bf9\u4e8eef\u7684\u60c5\u51b5\uff0c\u53ef\u80fd\u662f\u5728term 2\u548cterm 3\u4e2d\uff0c\u8282\u70b9\u66fe\u7ecf\u5f53\u9009\uff0c\u5e76\u6536\u5230\u4e00\u4e9b\u547d\u4ee4\uff0c\u4f46\u662f\u8fd8\u6ca1\u6709\u6765\u5f97\u53ca\u53d1\u51faappendEntry\u7684\u6d88\u606f\uff0c\u5b83\u5c31down\u4e86\uff0c\u7136\u540e\u4e00\u76f4down\u5230term 8\uff0c\u624d\u91cd\u65b0\u52a0\u5165\u3002<\/p>\n\n\n\n

                \u5f53\u51fa\u73b0\u4e86leader\u4e0efollower\u4e0d\u4e00\u81f4\u7684\u60c5\u51b5\uff0cleader\u5f3a\u5236follower\u590d\u5236\u81ea\u5df1\u7684log\u3002leader\u4f1a\u7ef4\u62a4\u4e00\u4e2anextIndex[]\u6570\u7ec4\uff0c\u8bb0\u5f55\u4e86leader\u53ef\u4ee5\u53d1\u9001\u6bcf\u4e00\u4e2afollower\u7684log index\uff0c\u521d\u59cb\u5316\u4e3aLeader\u6700\u540e\u4e00\u4e2alog index\u52a01\uff0c \u524d\u9762\u4e5f\u63d0\u5230\uff0cleader\u9009\u4e3e\u6210\u529f\u4e4b\u540e\u4f1a\u7acb\u5373\u7ed9\u6240\u6709follower\u53d1\u9001AppendEntries RPC\uff08\u4e0d\u5305\u542b\u4efb\u4f55log entry\uff0c \u4e5f\u5145\u5f53\u5fc3\u8df3\u6d88\u606f\uff09,\u90a3\u4e48\u6d41\u7a0b\u603b\u7ed3\u4e3a\uff1a <\/p>\n\n\n\n

                  \n
                1. leader \u521d\u59cb\u5316nextIndex[x]\u4e3a leader\u6700\u540e\u4e00\u4e2alog index + 1<\/li>\n\n\n\n
                2. AppendEntries\u91ccprevLogTerm prevLogIndex\u6765\u81ea logs[nextIndex[x] – 1]<\/li>\n\n\n\n
                3. \u5982\u679cfollower\u5224\u65adprevLogIndex\u4f4d\u7f6e\u7684log term\u4e0d\u7b49\u4e8eprevLogTerm\uff0c\u90a3\u4e48\u8fd4\u56de False\uff0c\u5426\u5219\u8fd4\u56deTrue<\/li>\n\n\n\n
                4. leader\u6536\u5230follower\u7684\u56de\u590d\uff0c\u5982\u679c\u8fd4\u56de\u503c\u662fFalse\uff0c\u5219nextIndex[x] -= 1, \u8df3\u8f6c\u5230step2. \u5426\u5219<\/li>\n\n\n\n
                5. \u540c\u6b65nextIndex[x]\u540e\u7684\u6240\u6709log entries\u3002\uff08\u5982\u679c\u6709\u8d85\u51fa\u7684log\uff0c\u5168\u90e8\u5220\u9664\uff09<\/li>\n<\/ol>\n\n\n\n

                  state machine safety<\/h3>\n\n\n\n
                  \"\"<\/div><\/figure>\n\n\n\n

                  \u4e0a\u56fe\u662f\u4e00\u4e2a\u8f83\u4e3a\u590d\u6742\u7684\u72b6\u6001\u673a\u51fa\u73b0\u6df7\u4e71\u7684\u60c5\u51b5\u3002\u5728\u65f6\u523b(a), s1\u662fleader\uff0c\u5728term2\u63d0\u4ea4\u7684\u65e5\u5fd7\u53ea\u590d\u5236\u5230\u4e86s1 s2\u4e24\u4e2a\u8282\u70b9\u5c31crash\u4e86\u3002\u5728\u65f6\u523b\uff08b), s5\u6210\u4e3a\u4e86term 3\u7684leader\uff0c\u65e5\u5fd7\u53ea\u590d\u5236\u5230\u4e86s5\uff0c\u7136\u540ecrash\u3002\u7136\u540e\u5728(c)\u65f6\u523b\uff0cs1\u53c8\u6210\u4e3a\u4e86term 4\u7684leader\uff0c\u5f00\u59cb\u590d\u5236\u65e5\u5fd7\uff0c\u4e8e\u662f\u628aterm 2\u7684\u65e5\u5fd7\u590d\u5236\u5230\u4e86s3\uff0c\u6b64\u523b\uff0c\u53ef\u4ee5\u770b\u51faterm 2\u5bf9\u5e94\u7684\u65e5\u5fd7\u5df2\u7ecf\u88ab\u590d\u5236\u5230\u4e86majority\uff0c\u56e0\u6b64\u662fcommitted\uff0c\u53ef\u4ee5\u88ab\u72b6\u6001\u673a\u5e94\u7528\u3002\u4e0d\u5e78\u7684\u662f\uff0c\u63a5\u4e0b\u6765\uff08d\uff09\u65f6\u523b\uff0cs1\u53c8crash\u4e86\uff0cs5\u91cd\u65b0\u5f53\u9009\uff0c\u7136\u540e\u5c06term 3\u7684\u65e5\u5fd7\u590d\u5236\u5230\u6240\u6709\u8282\u70b9\uff0c\u8fd9\u5c31\u51fa\u73b0\u4e86\u4e00\u79cd\u5947\u602a\u7684\u73b0\u8c61\uff1a\u88ab\u590d\u5236\u5230\u5927\u591a\u6570\u8282\u70b9\uff08\u6216\u8005\u8bf4\u53ef\u80fd\u5df2\u7ecf\u5e94\u7528\uff09\u7684\u65e5\u5fd7\u88ab\u56de\u6eda\u3002<\/p>\n\n\n\n

                  \u7a76\u5176\u6839\u672c\uff0c\u662f\u56e0\u4e3aterm 4\u65f6\u7684leader s1\u5728\uff08c\uff09\u65f6\u523b\u63d0\u4ea4\u4e86\u4e4b\u524dterm 2\u4efb\u671f\u7684\u65e5\u5fd7\u3002\u5982\u4f55\u7406\u89e3\u5462\uff1f\u5982\u679cS1\u4e0d\u662f\u53ea\u63d0\u4ea42\uff0c\u800c\u662f\u8fde\u540c\u6700\u65b0\u7684\u65e5\u5fd74\u4e00\u8d77\u63d0\u4ea4\u4e86\uff0c\u8fd9\u6837\u7684\u8bdd\uff0c\u6709\u4e09\u4e2a\u8282\u70b9\u7684\u65e5\u5fd7\u5230\u8fbe\u4e86term 4\uff0c\u90a3\u4e48\u63a5\u4e0b\u6765S5\u5c31\u4e0d\u4f1a\u5f53\u9009\uff0c\u4e5f\u4e0d\u4f1a\u51fa\u73b0\u65e5\u5fd7\u56de\u6eda\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n

                  \u56e0\u6b64\uff0c\u4e3a\u4e86\u675c\u7edd\u8fd9\u79cd\u60c5\u51b5\u7684\u53d1\u751f\uff0cRaft\u7684\u8bbe\u8ba1\u4e3a\uff1a<\/strong><\/p>\n\n\n\n

                  \u67d0\u4e2aleader\u9009\u4e3e\u6210\u529f\u4e4b\u540e\uff0c\u4e0d\u4f1a\u76f4\u63a5\u63d0\u4ea4\u524d\u4efbleader\u65f6\u671f\u7684\u65e5\u5fd7\uff0c\u800c\u662f\u901a\u8fc7\u63d0\u4ea4\u5f53\u524d\u4efb\u671f\u7684\u65e5\u5fd7\u7684\u65f6\u5019\u201c\u987a\u624b\u201d\u628a\u4e4b\u524d\u7684\u65e5\u5fd7\u4e5f\u63d0\u4ea4\u4e86\u3002\u90a3\u4e48\u95ee\u9898\u6765\u4e86\uff0c\u5982\u679cleader\u88ab\u9009\u4e3e\u540e\u6ca1\u6709\u6536\u5230\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u5462\uff0c\u8bba\u6587\u4e2d\u6709\u63d0\u5230\uff0c\u5728\u4efb\u671f\u5f00\u59cb\u7684\u65f6\u5019\u53d1\u7acb\u5373\u5c1d\u8bd5\u590d\u5236\uff0c\u63d0\u4ea4\u4e00\u6761\u7a7a\u7684log\u3002<\/p>\n\n\n\n

                  \u56e0\u6b64\uff0c\u5728\u4e0a\u56fe\u4e2d\uff0c\u4e0d\u4f1a\u51fa\u73b0\uff08c\uff09\u65f6\u523b\u7684\u60c5\u51b5\uff0c\u5373term4\u4efb\u671f\u7684leader s1\u4e0d\u4f1a\u590d\u5236term2\u7684\u65e5\u5fd7\u5230s3\u3002\u800c\u662f\u5982\u540c(e)\u63cf\u8ff0\u7684\u60c5\u51b5\uff0c\u901a\u8fc7\u590d\u5236-\u63d0\u4ea4 term4\u7684\u65e5\u5fd7\u987a\u4fbf\u63d0\u4ea4term2\u7684\u65e5\u5fd7\u3002\u5982\u679cterm 4\u7684\u65e5\u5fd7\u63d0\u4ea4\u6210\u529f\uff0c\u90a3\u4e48term 2\u7684\u65e5\u5fd7\u4e5f\u4e00\u5b9a\u63d0\u4ea4\u6210\u529f\uff0c\u6b64\u65f6\u5373\u4f7fs1 crash\uff0cs5\u4e5f\u4e0d\u4f1a\u5f53\u9009\u3002<\/p>\n\n\n\n

                  leader crash<\/h3>\n\n\n\n
                  \"\"<\/div><\/figure>\n\n\n\n

                  follower\u7684crash\u5904\u7406\u65b9\u5f0f\u76f8\u5bf9\u7b80\u5355\uff0cleader\u53ea\u8981\u4e0d\u505c\u7684\u7ed9follower\u53d1\u6d88\u606f\u5373\u53ef\u3002\u800c\u5f53leader crash\u7684\u65f6\u5019\uff0c\u4e8b\u60c5\u5c31\u4f1a\u53d8\u5f97\u590d\u6742\u3002\u4ee5\u4e0a\u662f\u4e00\u4e2a\u66f4\u65b0\u8bf7\u6c42\u7684\u6d41\u7a0b\u56fe\u3002\u6570\u636e\u7684\u6d41\u5411\u53ea\u80fd\u4ece Leader \u8282\u70b9\u5411 Follower \u8282\u70b9\u8f6c\u79fb\u3002\u5f53 Client \u5411\u96c6\u7fa4 Leader \u8282\u70b9\u63d0\u4ea4\u6570\u636e\u540e\uff0cLeader \u8282\u70b9\u63a5\u6536\u5230\u7684\u6570\u636e\u5904\u4e8e\u672a\u63d0\u4ea4\u72b6\u6001\uff08Uncommitted\uff09\uff0c\u63a5\u7740 Leader \u8282\u70b9\u4f1a\u5e76\u53d1\u5411\u6240\u6709 Follower \u8282\u70b9\u590d\u5236\u6570\u636e\u5e76\u7b49\u5f85\u63a5\u6536\u54cd\u5e94\uff0c\u786e\u4fdd\u81f3\u5c11\u96c6\u7fa4\u4e2d\u8d85\u8fc7\u534a\u6570\u8282\u70b9\u5df2\u63a5\u6536\u5230\u6570\u636e\u540e\u518d\u5411 Client \u786e\u8ba4\u6570\u636e\u5df2\u63a5\u6536\u3002\u4e00\u65e6\u5411 Client \u53d1\u51fa\u6570\u636e\u63a5\u6536 Ack \u54cd\u5e94\u540e\uff0c\u8868\u660e\u6b64\u65f6\u6570\u636e\u72b6\u6001\u8fdb\u5165\u5df2\u63d0\u4ea4\uff08Committed\uff09\uff0cLeader \u8282\u70b9\u518d\u5411 Follower \u8282\u70b9\u53d1\u901a\u77e5\u544a\u77e5\u8be5\u6570\u636e\u72b6\u6001\u5df2\u63d0\u4ea4\u3002<\/p>\n\n\n\n

                  \u4f46\u662f\uff0cLeader\u8282\u70b9\u5728\u4e0a\u8ff0\u8fc7\u7a0b\u7684\u4efb\u4e00\u65f6\u523b\u90fd\u6709\u53ef\u80fd\u6302\u6389\uff0c\u56e0\u6b64\u9700\u8981\u5206\u60c5\u51b5\u8ba8\u8bba\uff1a<\/p>\n\n\n\n

                  1. \u6570\u636e\u5230\u8fbe Leader \u8282\u70b9\u524d<\/h4>\n\n\n\n

                  \u8fd9\u4e2a\u9636\u6bb5 Leader \u6302\u6389\u4e0d\u5f71\u54cd\u4e00\u81f4\u6027\u3002<\/p>\n\n\n\n

                  \"\"<\/div><\/figure>\n\n\n\n

                  2. \u6570\u636e\u5230\u8fbe Leader \u8282\u70b9\uff0c\u4f46\u672a\u590d\u5236\u5230 Follower \u8282\u70b9<\/h4>\n\n\n\n

                  \u8fd9\u4e2a\u9636\u6bb5 Leader \u6302\u6389\uff0c\u6570\u636e\u5c5e\u4e8e\u672a\u63d0\u4ea4\u72b6\u6001\uff0cClient \u4e0d\u4f1a\u6536\u5230 Ack \u4f1a\u8ba4\u4e3a\u8d85\u65f6\u5931\u8d25\u53ef\u5b89\u5168\u53d1\u8d77\u91cd\u8bd5\u3002Follower \u8282\u70b9\u4e0a\u6ca1\u6709\u8be5\u6570\u636e\uff0c\u91cd\u65b0\u9009\u4e3b\u540e Client \u91cd\u8bd5\u91cd\u65b0\u63d0\u4ea4\u53ef\u6210\u529f\u3002\u539f\u6765\u7684 Leader \u8282\u70b9\u6062\u590d\u540e\u4f5c\u4e3a Follower \u52a0\u5165\u96c6\u7fa4\u91cd\u65b0\u4ece\u5f53\u524d\u4efb\u671f\u7684\u65b0 Leader \u5904\u540c\u6b65\u6570\u636e\uff0c\u5f3a\u5236\u4fdd\u6301\u548c Leader \u6570\u636e\u4e00\u81f4\u3002<\/p>\n\n\n\n

                  \"\"<\/div><\/figure>\n\n\n\n

                  3. \u6570\u636e\u5230\u8fbe Leader \u8282\u70b9\uff0c\u6210\u529f\u590d\u5236\u5230 Follower \u6240\u6709\u8282\u70b9\uff0c\u4f46\u8fd8\u672a\u5411 Leader \u54cd\u5e94\u63a5\u6536<\/h4>\n\n\n\n

                  \u8fd9\u4e2a\u9636\u6bb5 Leader \u6302\u6389\uff0c\u867d\u7136\u6570\u636e\u5728 Follower \u8282\u70b9\u5904\u4e8e\u672a\u63d0\u4ea4\u72b6\u6001\uff08Uncommitted\uff09\u4f46\u4fdd\u6301\u4e00\u81f4\uff0c\u91cd\u65b0\u9009\u51fa Leader \u540e\u53ef\u5b8c\u6210\u6570\u636e\u63d0\u4ea4\uff0c\u6b64\u65f6 Client \u7531\u4e8e\u4e0d\u77e5\u5230\u5e95\u63d0\u4ea4\u6210\u529f\u6ca1\u6709\uff0c\u53ef\u91cd\u8bd5\u63d0\u4ea4\u3002\u9488\u5bf9\u8fd9\u79cd\u60c5\u51b5 Raft \u8981\u6c42 RPC \u8bf7\u6c42\u5b9e\u73b0\u5e42\u7b49\u6027\uff0c\u4e5f\u5c31\u662f\u8981\u5b9e\u73b0\u5185\u90e8\u53bb\u91cd\u673a\u5236\u3002<\/p>\n\n\n\n

                  \"\"<\/div><\/figure>\n\n\n\n

                  4. \u6570\u636e\u5230\u8fbe Leader \u8282\u70b9\uff0c\u6210\u529f\u590d\u5236\u5230 Follower \u90e8\u5206\u8282\u70b9\uff0c\u4f46\u8fd8\u672a\u5411 Leader \u54cd\u5e94\u63a5\u6536<\/h4>\n\n\n\n

                  \u8fd9\u4e2a\u9636\u6bb5 Leader \u6302\u6389\uff0c\u6570\u636e\u5728 Follower \u8282\u70b9\u5904\u4e8e\u672a\u63d0\u4ea4\u72b6\u6001\uff08Uncommitted\uff09\u4e14\u4e0d\u4e00\u81f4\uff0cRaft \u534f\u8bae\u8981\u6c42\u6295\u7968\u53ea\u80fd\u6295\u7ed9\u62e5\u6709\u6700\u65b0\u6570\u636e\u7684\u8282\u70b9\u3002\u6240\u4ee5\u62e5\u6709\u6700\u65b0\u6570\u636e\u7684\u8282\u70b9\u4f1a\u88ab\u9009\u4e3a Leader \u518d\u5f3a\u5236\u540c\u6b65\u6570\u636e\u5230 Follower\uff0c\u6570\u636e\u4e0d\u4f1a\u4e22\u5931\u5e76\u6700\u7ec8\u4e00\u81f4\u3002<\/p>\n\n\n\n

                  \"\"<\/div><\/figure>\n\n\n\n

                  5. \u6570\u636e\u5230\u8fbe Leader \u8282\u70b9\uff0c\u6210\u529f\u590d\u5236\u5230 Follower \u6240\u6709\u6216\u591a\u6570\u8282\u70b9\uff0c\u6570\u636e\u5728 Leader \u5904\u4e8e\u5df2\u63d0\u4ea4\u72b6\u6001\uff0c\u4f46\u5728 Follower \u5904\u4e8e\u672a\u63d0\u4ea4\u72b6\u6001<\/h4>\n\n\n\n

                  \u8fd9\u4e2a\u9636\u6bb5 Leader \u6302\u6389\uff0c\u91cd\u65b0\u9009\u51fa\u65b0 Leader \u540e\u7684\u5904\u7406\u6d41\u7a0b\u548c\u9636\u6bb5 3 \u4e00\u6837\u3002<\/p>\n\n\n\n

                  \"\"<\/div><\/figure>\n\n\n\n

                  6. \u6570\u636e\u5230\u8fbe Leader \u8282\u70b9\uff0c\u6210\u529f\u590d\u5236\u5230 Follower \u6240\u6709\u6216\u591a\u6570\u8282\u70b9\uff0c\u6570\u636e\u5728\u6240\u6709\u8282\u70b9\u90fd\u5904\u4e8e\u5df2\u63d0\u4ea4\u72b6\u6001\uff0c\u4f46\u8fd8\u672a\u54cd\u5e94 Client<\/h4>\n\n\n\n

                  \u8fd9\u4e2a\u9636\u6bb5 Leader \u6302\u6389\uff0cCluster \u5185\u90e8\u6570\u636e\u5176\u5b9e\u5df2\u7ecf\u662f\u4e00\u81f4\u7684\uff0cClient \u91cd\u590d\u91cd\u8bd5\u57fa\u4e8e\u5e42\u7b49\u7b56\u7565\u5bf9\u4e00\u81f4\u6027\u65e0\u5f71\u54cd\u3002<\/p>\n\n\n\n

                  \"\"<\/div><\/figure>\n\n\n\n

                  7. \u7f51\u7edc\u5206\u533a\u5bfc\u81f4\u7684\u8111\u88c2\u60c5\u51b5\uff0c\u51fa\u73b0\u53cc Leader<\/h4>\n\n\n\n

                  \u7f51\u7edc\u5206\u533a\u5c06\u539f\u5148\u7684 Leader \u8282\u70b9\u548c Follower \u8282\u70b9\u5206\u9694\u5f00\uff0cFollower \u6536\u4e0d\u5230 Leader \u7684\u5fc3\u8df3\u5c06\u53d1\u8d77\u9009\u4e3e\u4ea7\u751f\u65b0\u7684 Leader\u3002\u8fd9\u65f6\u5c31\u4ea7\u751f\u4e86\u53cc Leader\uff0c\u539f\u5148\u7684 Leader \u72ec\u81ea\u5728\u4e00\u4e2a\u533a\uff0c\u5411\u5b83\u63d0\u4ea4\u6570\u636e\u4e0d\u53ef\u80fd\u590d\u5236\u5230\u591a\u6570\u8282\u70b9\u6240\u4ee5\u6c38\u8fdc\u63d0\u4ea4\u4e0d\u6210\u529f\u3002\u5411\u65b0\u7684 Leader \u63d0\u4ea4\u6570\u636e\u53ef\u4ee5\u63d0\u4ea4\u6210\u529f\uff0c\u7f51\u7edc\u6062\u590d\u540e\u65e7\u7684 Leader \u53d1\u73b0\u96c6\u7fa4\u4e2d\u6709\u66f4\u65b0\u4efb\u671f\uff08Term\uff09\u7684\u65b0 Leader \u5219\u81ea\u52a8\u964d\u7ea7\u4e3a Follower \u5e76\u4ece\u65b0 Leader \u5904\u540c\u6b65\u6570\u636e\u8fbe\u6210\u96c6\u7fa4\u6570\u636e\u4e00\u81f4\u3002<\/p>\n\n\n\n

                  \"\"<\/div><\/figure>\n\n\n\n

                  \u4e0a\u9762\u7a77\u4e3e\u5206\u6790\u4e86\u6700\u5c0f\u96c6\u7fa4\uff083 \u8282\u70b9\uff09\u9762\u4e34\u7684\u6240\u6709\u60c5\u51b5\uff0c\u53ef\u4ee5\u770b\u51fa Raft \u534f\u8bae\u90fd\u80fd\u5f88\u597d\u7684\u5e94\u5bf9\u4e00\u81f4\u6027\u95ee\u9898\uff0c\u5e76\u4e14\u5f88\u5bb9\u6613\u7406\u89e3\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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