{"id":1413,"date":"2018-08-02T16:23:56","date_gmt":"2018-08-02T08:23:56","guid":{"rendered":"https:\/\/www.xiaobo.li\/?p=1413"},"modified":"2018-08-22T11:11:34","modified_gmt":"2018-08-22T03:11:34","slug":"raft","status":"publish","type":"post","link":"https:\/\/www.xiaobo.li\/notes\/archives\/1413","title":{"rendered":"raft"},"content":{"rendered":"

 <\/p>\n

\n
\n
\n
\n
\n

\u6982\u8ff0<\/h2>\n

\u5f15\u7528\u8bba\u6587\u4e2d\u7684\u7b2c\u4e00\u53e5\u8bdd--\u201cRaft \u662f\u4e00\u79cd\u4e3a\u4e86\u7ba1\u7406\u590d\u5236\u65e5\u5fd7\u7684\u4e00\u81f4\u6027\u7b97\u6cd5\u201d\u3002\u4ece\u4e24\u4e2a\u89d2\u5ea6\u6765\u7406\u89e3raft\u7b97\u6cd5\uff0c\u7b2c\u4e00\u90e8\u5206\u662fraft\u7684\u57fa\u672c\u89c4\u5219\uff0c\u7b2c\u4e8c\u90e8\u5206\u662fraft\u7684\u5f02\u5e38\u60c5\u51b5\u5904\u7406\u3002\u4e0b\u9762\u653e\u4e00\u5f20raft\u8bba\u6587\u4e2d\u7684\u7ecf\u5178\u56fe\u6765\u4e86\u89e3\u4e00\u4e0braft\u662f\u600e\u4e48\u5728\u4e00\u4e2a\u7cfb\u7edf\u4e2d\u5de5\u4f5c\u7684\u3002\u4e0b\u56fe\u4e2d\u4e00\u81f4\u6027\u6a21\u5757Consensus Module\u6267\u884c\u7684\u5c31\u662fraft\u7b97\u6cd5\uff0c\u5b83\u4fdd\u8bc1\u62f7\u8d1d\u5230\u6240\u6709server\u4e0a\u7684\u6bcf\u4e00\u6761\u65e5\u5fd7\u662f\u4e00\u81f4\u7684\u3002State Machine\u72b6\u6001\u673a\u5bf9\u5e94\u6211\u4eec\u7684\u4e1a\u52a1\u903b\u8f91\uff0c\u65e5\u5fd7\u4f5c\u4e3a\u72b6\u6001\u673a\u7684\u8f93\u5165\uff0c\u8f93\u5165\u4e00\u81f4\u5c31\u80fd\u4fdd\u8bc1\u8f93\u51fa\u662f\u4e00\u81f4\u7684\u3002<\/p>\n

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

\u57fa\u672c\u89c4\u5219<\/p>\n

raft\u7684\u5de5\u4f5c\u6a21\u5f0f\u662f\u4e00\u4e2aLeader\u548c\u591a\u4e2aFollower\u6a21\u5f0f\uff0c\u5373\u6211\u4eec\u901a\u5e38\u8bf4\u7684\u9886\u5bfc\u8005-\u8ffd\u968f\u8005\u6a21\u5f0f\u3002\u8fd9\u79cd\u6a21\u5f0f\u4e0b\u9700\u8981\u89e3\u51b3\u7684\u7b2c\u4e00\u4e2a\u95ee\u9898\u5c31\u662fLeader\u7684\u9009\u4e3e\u95ee\u9898\u3002\u5176\u6b21\u662f\u5982\u4f55\u628a\u65e5\u5fd7\u4eceLeader\u590d\u5236\u5230\u6240\u6709Follower\u4e0a\u53bb\u3002\u8fd9\u91cc\u5148\u4e0d\u5173\u5fc3\u5b89\u5168\u548c\u53ef\u9760\u6027\uff0c\u53ea\u7406\u89e3raft\u8fd0\u884c\u8d77\u6765\u57fa\u672c\u89c4\u5219\u3002raft\u4e2d\u7684server\u6709\u4e09\u79cd\u72b6\u6001\uff0c\u9664\u4e86\u5df2\u7ecf\u63d0\u5230\u7684Leader\u548cFollower\u72b6\u6001\u5916\uff0c\u8fd8\u6709Candidate\u72b6\u6001\uff0c\u5373\u7ade\u9009\u8005\u72b6\u6001\u3002\u4e0b\u9762\u662f\u8fd9\u4e09\u79cd\u72b6\u6001\u7684\u8f6c\u5316\u8fc7\u7a0b\u3002<\/p>\n

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

1\u3001Leader\u7684\u9009\u4e3e\u8fc7\u7a0b<\/p>\n

raft\u521d\u59cb\u72b6\u6001\u65f6\u6240\u6709server\u90fd\u5904\u4e8eFollower\u72b6\u6001\uff0c\u5e76\u4e14\u968f\u673a\u7761\u7720\u4e00\u6bb5\u65f6\u95f4\uff0c\u8fd9\u4e2a\u65f6\u95f4\u57280~1000ms\u4e4b\u95f4\u3002\u6700\u5148\u9192\u6765\u7684server A\u8fdb\u5165Candidate\u72b6\u6001\uff0cCandidate\u72b6\u6001\u7684server A\u6709\u6743\u5229\u53d1\u8d77\u6295\u7968\uff0c\u5411\u5176\u5b83\u6240\u6709server\u53d1\u51farequst_vote\u8bf7\u6c42\uff0c\u8bf7\u6c42\u5176\u5b83server\u7ed9\u5b83\u6295\u7968\u6210\u4e3aLeader\u3002\u5f53\u5176\u5b83server\u6536\u5230request_vote\u8bf7\u6c42\u540e\uff0c\u5c06\u81ea\u5df1\u4ec5\u6709\u7684\u4e00\u7968\u6295\u7ed9server A\uff0c\u540c\u65f6\u7ee7\u7eed\u4fdd\u6301Follower\u72b6\u6001\u5e76\u91cd\u7f6e\u9009\u4e3e\u8ba1\u65f6\u5668\u3002\u5f53server A\u6536\u5230\u5927\u591a\u6570\uff08\u8d85\u8fc7\u4e00\u534a\u4ee5\u4e0a\uff09server\u7684\u6295\u7968\u540e\uff0c\u5c31\u8fdb\u5165Leader\u72b6\u6001\uff0c\u6210\u4e3a\u7cfb\u7edf\u4e2d\u4ec5\u6709\u7684Leader\u3002raft\u7cfb\u7edf\u4e2d\u53ea\u6709Leader\u624d\u6709\u6743\u5229\u63a5\u6536\u5e76\u5904\u7406client\u8bf7\u6c42\uff0c\u5e76\u5411\u5176\u5b83server\u53d1\u51fa\u6dfb\u52a0\u65e5\u5fd7\u8bf7\u6c42\u6765\u63d0\u4ea4\u65e5\u5fd7\u3002<\/p>\n

2\u3001\u65e5\u5fd7\u590d\u5236\u8fc7\u7a0b<\/p>\n

Leader\u9009\u4e3e\u51fa\u6765\u540e\uff0c\u5c31\u53ef\u4ee5\u5f00\u59cb\u5904\u7406\u5ba2\u6237\u7aef\u8bf7\u6c42\u3002Leader\u6536\u5230\u5ba2\u6237\u7aef\u8bf7\u6c42\u540e\uff0c\u5c06\u8bf7\u6c42\u5185\u5bb9\u4f5c\u4e3a\u4e00\u6761log\u65e5\u5fd7\u6dfb\u52a0\u5230\u81ea\u5df1\u7684log\u8bb0\u5f55\u4e2d\uff0c\u5e76\u5411\u5176\u5b83server\u53d1\u9001append_entries(\u6dfb\u52a0\u65e5\u5fd7)\u8bf7\u6c42\u3002\u5176\u5b83server\u6536\u5230append_entries\u8bf7\u6c42\u540e\uff0c\u5224\u65ad\u8be5append\u8bf7\u6c42\u6ee1\u8db3\u63a5\u6536\u6761\u4ef6\uff08\u63a5\u6536\u6761\u4ef6\u5728\u540e\u9762\u5b89\u5168\u4fdd\u8bc1\u95ee\u98983\u7ed9\u51fa\uff09\uff0c\u5982\u679c\u6ee1\u8db3\u6761\u4ef6\u5c31\u5c06\u5176\u6dfb\u52a0\u5230\u672c\u5730\u7684log\u4e2d\uff0c\u5e76\u7ed9Leader\u53d1\u9001\u6dfb\u52a0\u6210\u529f\u7684response\u3002Leader\u5728\u6536\u5230\u5927\u591a\u6570server\u6dfb\u52a0\u6210\u529f\u7684response\u540e\uff0c\u5c31\u5c06\u8be5\u6761log\u6b63\u5f0f\u63d0\u4ea4\u3002\u63d0\u4ea4\u540e\u7684log\u65e5\u5fd7\u5c31\u610f\u5473\u7740\u5df2\u7ecf\u88abraft\u7cfb\u7edf\u63a5\u53d7\uff0c\u5e76\u80fd\u5e94\u7528\u5230\u72b6\u6001\u673a\u4e2d\u4e86\u3002<\/p>\n

Leader\u5177\u6709\u7edd\u5bf9\u7684\u65e5\u5fd7\u590d\u5236\u6743\u529b\uff0c\u5176\u5b83server\u4e0a\u5b58\u5728\u65e5\u5fd7\u4e0d\u5168\u6216\u8005\u4e0eLeader\u65e5\u5fd7\u4e0d\u4e00\u81f4\u7684\u60c5\u51b5\u65f6\uff0c\u4e00\u5207\u90fd\u4ee5Leader\u4e0a\u7684\u65e5\u5fd7\u4e3a\u4e3b\uff0c\u6700\u7ec8\u6240\u6709server\u4e0a\u7684\u65e5\u5fd7\u90fd\u4f1a\u590d\u5236\u6210\u4e0eLeader\u4e00\u81f4\u7684\u72b6\u6001\u3002<\/p>\n

\u4ee5\u4e0a\u5c31\u662fraft\u5141\u8bb8\u7684\u57fa\u672c\u89c4\u5219\uff0c\u5982\u679c\u4e0d\u51fa\u73b0\u4efb\u4f55\u5f02\u5e38\u60c5\u51b5\uff0c\u90a3\u4e48\u53ea\u8981\u4e0a\u9762\u4e24\u4e2a\u8fc7\u7a0b\u5c31\u80fd\u4f7fraft\u8fd0\u884c\u8d77\u6765\u4e86\u3002\u4f46\u662f\u73b0\u5b9e\u7684\u7cfb\u7edf\u4e0d\u53ef\u80fd\u8fd9\u4e48\u4e00\u5e06\u98ce\u987a\uff0c\u603b\u662f\u6709\u5f88\u591a\u5f02\u5e38\u60c5\u51b5\u9700\u8981\u8003\u8651\u3002raft\u7684\u590d\u6742\u6027\u5c31\u6765\u6e90\u4e8e\u5bf9\u8fd9\u4e9b\u5f02\u5e38\u60c5\u51b5\u7684\u8003\u8651\uff0c\u4e0b\u9762\u4e00\u5c0f\u8282\u5c31\u4ee5\u95ee\u7b54\u7684\u65b9\u5f0f\u6765\u603b\u7ed3raft\u662f\u600e\u4e48\u4fdd\u8bc1\u5b89\u5168\u6027\u7684\u3002<\/p>\n

\u5b89\u5168\u6027\u4fdd\u8bc1<\/p>\n

1\u3001Leader\u9009\u4e3e\u8fc7\u7a0b\u4e2d\uff0c\u5982\u679c\u6709\u4e24\u4e2aserverA\u548cB\u540c\u65f6\u9192\u6765\u5e76\u53d1\u51farequest_vote\u8bf7\u6c42\u600e\u4e48\u529e\uff1f<\/p>\n

\u7531\u4e8e\u5728\u4e00\u6b21\u9009\u4e3e\u8fc7\u7a0b\u4e2d\uff0c\u4e00\u4e2aserver\u6700\u591a\u53ea\u80fd\u6295\u4e00\u7968\uff0c\u8fd9\u5c31\u4fdd\u8bc1\u4e86serverA\u548cB\u4e0d\u53ef\u80fd\u540c\u65f6\u5f97\u5230\u5927\u591a\u6570\uff08\u4e00\u534a\u4ee5\u4e0a\uff09\u7684\u6295\u7968\u3002\u5982\u679cA\u6216\u8005B\u4e2d\u5176\u4e00\u5e78\u8fd0\u5730\u5f97\u5230\u4e86\u5927\u591a\u6570\u6295\u7968\uff0c\u5c31\u80fd\u987a\u5229\u5730\u6210\u4e3aLeader\uff0craft\u7cfb\u7edf\u6b63\u5e38\u8fd0\u884c\u4e0b\u53bb\u3002\u4f46\u662fA\u548cB\u53ef\u80fd\u521a\u597d\u90fd\u5f97\u5230\u4e00\u534a\u7684\u6295\u7968\uff0c\u4e24\u8005\u90fd\u6210\u4e3a\u4e0d\u4e86Leader\u3002\u8fd9\u65f6A\u548cB\u7ee7\u7eed\u4fdd\u6301Candidate\u72b6\u6001\uff0c\u5e76\u4e14\u968f\u673a\u7761\u7720\u4e00\u6bb5\u65f6\u95f4\uff0c\u7b49\u5f85\u8fdb\u5165\u5230\u4e0b\u4e00\u4e2a\u9009\u4e3e\u5468\u671f\u3002\u7531\u4e8e\u6240\u6709server\u90fd\u662f\u968f\u673a\u9009\u62e9\u7761\u7720\u65f6\u95f4\uff0c\u6240\u4ee5\u8fde\u7eed\u51fa\u73b0\u591a\u4e2aserver\u7ade\u9009\u7684\u6982\u7387\u5f88\u4f4e\u3002<\/p>\n

2\u3001Leader\u6302\u4e86\u540e\uff0c\u5982\u4f55\u9009\u4e3e\u51fa\u65b0\u7684Leader\uff1f<\/p>\n

Leader\u6b63\u5e38\u8fd0\u4f5c\u65f6\uff0c\u4f1a\u5468\u671f\u6027\u5730\u53d1\u51faappend_entries\u8bf7\u6c42\u3002\u8fd9\u4e2a\u5468\u671f\u6027\u7684append_entries\u9664\u4e86\u53ef\u4ee5\u66f4\u65b0\u5176\u5b83Follower\u7684log\u4fe1\u606f\uff0c\u53e6\u5916\u4e00\u4e2a\u91cd\u8981\u529f\u80fd\u5c31\u662f\u8d77\u5230\u5fc3\u8df3\u4f5c\u7528\u3002Follower\u6536\u5230append_entries\u540e\uff0c\u5c31\u77e5\u9053Leader\u8fd8\u6d3b\u7740\u3002\u5982\u679cFollower\u7ecf\u8fc7\u4e00\u4e2a\u9884\u5b9a\u7684\u65f6\u95f4(\u4e00\u822c\u8bbe\u4e3a2000ms\u5de6\u53f3)\u90fd\u6ca1\u6709\u6536\u5230Leader\u7684\u5fc3\u8df3\uff0c\u5c31\u8ba4\u4e3aLeader\u6302\u4e86\u3002\u4e8e\u662f\u8f6c\u5165Candidate\u72b6\u6001\uff0c\u5f00\u59cb\u53d1\u8d77\u6295\u7968\u7ade\u9009\u65b0\u7684Leader\u3002\u6bcf\u4e2a\u65b0\u7684Leader\u4ea7\u751f\u540e\u5c31\u662f\u4e00\u4e2a\u65b0\u7684\u4efb\u671f\uff0c\u6bcf\u4e2a\u4efb\u671f\u90fd\u5bf9\u5e94\u4e00\u4e2a\u552f\u4e00\u7684\u4efb\u671f\u53f7term\u3002\u8fd9\u4e2aterm\u662f\u5355\u8c03\u9012\u589e\u7684\uff0c\u7528\u6765\u552f\u4e00\u6807\u8bc6\u4e00\u4e2aLeader\u7684\u4efb\u671f\u3002\u6295\u7968\u5f00\u59cb\u65f6\uff0cCandidate\u5c06\u81ea\u5df1\u7684term\u52a01\uff0c\u5e76\u5728request_vote\u4e2d\u5e26\u4e0aterm\uff1bFollower\u53ea\u4f1a\u63a5\u53d7\u4efb\u671f\u53f7term\u6bd4\u81ea\u5df1\u5927\u7684request_vote\u8bf7\u6c42\uff0c\u5e76\u4e3a\u4e4b\u6295\u7968\u3002\u8fd9\u6761\u89c4\u5219\u4fdd\u8bc1\u4e86\u53ea\u6709\u6700\u65b0\u7684Candidate\u624d\u6709\u53ef\u80fd\u6210\u4e3aLeader\u3002<\/p>\n

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

3\u3001Follower\u5728\u6536\u5230\u4e00\u6761append_entries\u6dfb\u52a0\u65e5\u5fd7\u8bf7\u6c42\u540e\uff0c\u662f\u5426\u7acb\u5373\u4fdd\u5b58\u5e76\u5c06\u5176\u5e94\u7528\u5230\u72b6\u6001\u673a\u4e2d\u53bb\uff1f\u5982\u679c\u4e0d\u662f\u7acb\u5373\u5e94\u7528\uff0c\u90a3\u4e48\u7531\u4ec0\u4e48\u6765\u51b3\u5b9a\u8be5\u6761\u65e5\u5fd7\u751f\u6548\u7684\u65f6\u95f4\uff1f<\/p>\n

Follower\u5728\u6536\u5230\u4e00\u6761append_entries\u540e\uff0c\u9996\u5148\u4f1a\u68c0\u67e5\u8fd9\u6761append_entries\u7684\u6765\u6e90\u4fe1\u606f\u662f\u5426\u4e0e\u672c\u5730\u4fdd\u5b58\u7684leader\u4fe1\u606f\u7b26\u5408\uff0c\u5305\u62ecleaderId\u548c\u4efb\u671f\u53f7term\u3002\u68c0\u67e5\u5408\u6cd5\u540e\u5c31\u5c06\u65e5\u5fd7\u4fdd\u5b58\u5230\u672c\u5730log\u4e2d\uff0c\u5e76\u7ed9Leader\u56de\u590d\u6dfb\u52a0log\u6210\u529f\uff0c\u4f46\u662f\u4e0d\u4f1a\u7acb\u5373\u5c06\u5176\u5e94\u7528\u5230\u672c\u5730\u72b6\u6001\u673a\u3002Leader\u6536\u5230\u5927\u90e8\u5206Follower\u6dfb\u52a0log\u6210\u529f\u7684\u56de\u590d\u540e\uff0c\u5c31\u6b63\u5f0f\u5c06\u8fd9\u6761\u65e5\u5fd7commit\u63d0\u4ea4\u3002Leader\u5728\u968f\u540e\u53d1\u51fa\u7684\u5fc3\u8df3append_entires\u4e2d\u4f1a\u5e26\u4e0a\u5df2\u7ecf\u63d0\u4ea4\u65e5\u5fd7\u7d22\u5f15\u3002Follower\u6536\u5230Leader\u53d1\u51fa\u7684\u5fc3\u8df3append_entries\u540e\uff0c\u5c31\u53ef\u4ee5\u786e\u8ba4\u521a\u624d\u7684log\u5df2\u7ecf\u88abcommit(\u63d0\u4ea4)\u4e86\uff0c\u8fd9\u4e2a\u65f6\u5019Follower\u624d\u4f1a\u628a\u65e5\u5fd7\u5e94\u7528\u5230\u672c\u5730\u72b6\u6001\u673a\u3002\u4e0b\u8868\u5373\u662fappend_entries\u8bf7\u6c42\u7684\u5185\u5bb9\uff0c\u5176\u4e2dleaderCommit\u5373\u662fLeader\u5df2\u7ecf\u786e\u8ba4\u63d0\u4ea4\u7684\u6700\u5927\u65e5\u5fd7\u7d22\u5f15\u3002Follower\u5728\u6536\u5230Leader\u53d1\u51fa\u7684append_entries\u540e\u5373\u53ef\u4ee5\u901a\u8fc7leaderCommit\u5b57\u6bb5\u51b3\u5b9a\u54ea\u4e9b\u65e5\u5fd7\u53ef\u4ee5\u5e94\u7528\u5230\u72b6\u6001\u673a\u3002<\/p>\n

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

4\u3001\u5047\u8bbe\u6709\u4e00\u4e2aserver A\u5b95\u673a\u4e86\u5f88\u957f\u4e00\u6bb5\u65f6\u95f4\uff0c\u5b83\u7684\u65e5\u5fd7\u5df2\u7ecf\u843d\u540e\u5f88\u591a\u3002\u5982\u679cA\u91cd\u65b0\u4e0a\u7ebf\uff0c\u800c\u4e14\u6b64\u65f6\u73b0\u6709Leader\u6302\u6389\uff0cserver A\u521a\u597d\u7ade\u9009\u6210\u4e3a\u4e86Leader\u3002\u6309\u7167\u65e5\u5fd7\u90fd\u662f\u7531Leader\u590d\u5236\u7ed9\u5176\u5b83server\u7684\u539f\u5219\uff0cserver A\u4f1a\u628a\u5176\u5b83Follower\u5df2\u7ecf\u63d0\u4ea4\u7684\u65e5\u5fd7\u7ed9\u62b9\u6389\uff0c\u800c\u8fd9\u8fdd\u53cd\u4e86raft\u72b6\u6001\u673a\u5b89\u5168\u7279\u6027\uff0craft\u600e\u4e48\u89e3\u51b3\u8fd9\u79cd\u5f02\u5e38\u60c5\u51b5\uff1f<\/p>\n

\u6240\u8c13\u7684\u72b6\u6001\u673a\u5b89\u5168\u7279\u6027\u5373\u662f\u201c\u5982\u679c\u4e00\u4e2a\u9886\u5bfc\u4eba\u5df2\u7ecf\u5728\u7ed9\u5b9a\u7684\u7d22\u5f15\u503c\u4f4d\u7f6e\u7684\u65e5\u5fd7\u6761\u76ee\u5e94\u7528\u5230\u72b6\u6001\u673a\u4e2d\uff0c\u90a3\u4e48\u5176\u4ed6\u4efb\u4f55\u7684\u670d\u52a1\u5668\u5728\u8fd9\u4e2a\u7d22\u5f15\u4f4d\u7f6e\u4e0d\u4f1a\u63d0\u4ea4\u4e00\u4e2a\u4e0d\u540c\u7684\u65e5\u5fd7\u201d\u3002\u5982\u679cserver\u5728\u7ade\u9009Leader\u7684\u8fc7\u7a0b\u4e2d\u4e0d\u52a0\u4efb\u4f55\u9650\u5236\u7684\u8bdd\uff0c\u643a\u5e26\u65e7\u65e5\u5fd7\u7684server\u4e5f\u6709\u53ef\u80fd\u7ade\u9009\u6210\u4e3aLeader\uff0c\u5c31\u5fc5\u7136\u5b58\u5728\u8986\u76d6\u4e4b\u524dLeader\u5df2\u7ecf\u63d0\u4ea4\u7684\u65e5\u5fd7\u53ef\u80fd\u6027\uff0c\u4ece\u800c\u8fdd\u53cd\u72b6\u6001\u673a\u5b89\u5168\u7279\u6027\u3002raft\u7684\u89e3\u51b3\u529e\u6cd5\u5f88\u7b80\u5355\uff0c\u5c31\u662f\u53ea\u6709\u5177\u6709\u6700\u65b0\u65e5\u5fd7\u7684server\u7684\u624d\u6709\u8d44\u683c\u53bb\u7ade\u9009\u5f53\u4e0aLeader\uff0c\u5177\u4f53\u662f\u600e\u4e48\u505a\u5230\u7684\u5462\uff1f\u9996\u5148\u4efb\u4f55server\u90fd\u8fd8\u662f\u6709\u8d44\u683c\u53bb\u53d1\u8d77request_vote\u8bf7\u6c42\u53bb\u62c9\u53d6\u6295\u7968\u7684\uff0crequest_vote\u4e2d\u4f1a\u5e26\u4e0aserver\u7684\u65e5\u5fd7\u4fe1\u606f\uff0c\u8fd9\u4e9b\u4fe1\u606f\u6807\u660e\u4e86server\u65e5\u5fd7\u7684\u65b0\u65e7\u7a0b\u5ea6\uff0c\u5982\u4e0b\u8868\u6240\u793a\u3002<\/p>\n

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

\u5176\u5b83server\u6536\u5230request_vote\u540e\uff0c\u5224\u65ad\u5982\u679clastLogTerm\u6bd4\u81ea\u5df1\u7684term\u5927\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u7ed9\u5b83\u6295\u7968\uff1blastLogTerm\u6bd4\u81ea\u5df1\u7684term\u5c0f\uff0c\u5c31\u4e0d\u7ed9\u5b83\u6295\u7968\u3002\u5982\u679c\u76f8\u7b49\u7684\u8bdd\u5c31\u6bd4\u8f83lastLogIndex\uff0clastLogIndex\u5927\u7684\u8bdd\u65e5\u5fd7\u5c31\u6bd4\u8f83\u65b0\uff0c\u5c31\u7ed9\u5b83\u6295\u7968\u3002\u4e0b\u56fe\u662fraft\u65e5\u5fd7\u683c\u5f0f\uff0c\u6bcf\u6761\u65e5\u5fd7\u4e2d\u4e0d\u4ec5\u4fdd\u5b58\u4e86\u65e5\u5fd7\u5185\u5bb9\uff0c\u8fd8\u4fdd\u5b58\u4e86\u53d1\u9001\u8fd9\u6761\u65e5\u5fd7\u7684Leader\u7684\u4efb\u671f\u53f7term\u3002\u4e3a\u4ec0\u4e48\u8981\u5728\u65e5\u5fd7\u91cc\u4fdd\u5b58\u4efb\u671f\u53f7term\uff0c\u7531\u4e8e\u4efb\u671f\u53f7\u662f\u5168\u5c40\u5355\u8c03\u9012\u589e\u4e14\u552f\u4e00\u7684\uff0c\u6240\u4ee5\u6839\u636e\u4efb\u671f\u53f7\u53ef\u4ee5\u5224\u65ad\u4e00\u6761\u65e5\u5fd7\u7684\u65b0\u65e7\u7a0b\u5ea6\uff0c\u4e3a\u9009\u4e3e\u51fa\u5177\u6709\u6700\u65b0\u65e5\u5fd7\u7684Leader\u63d0\u4f9b\u4f9d\u636e\u3002<\/p>\n

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

5\u3001\u5b58\u5728\u5982\u4e0b\u56fe\u4e00\u79cd\u5f02\u5e38\u60c5\u51b5\uff0cserver S5\u5728\u65f6\u5e8f(d)\u4e2d\u8986\u76d6\u4e86server S1\u5728\u65f6\u5e8f(c)\u4e2d\u63d0\u4ea4\u7684index\u4e3a2\u7684\u65e5\u5fd7\uff0c\u65b9\u6846\u4e2d\u7684\u6570\u5b57\u662f\u65e5\u5fd7\u7684term\u3002\u8fd9\u8fdd\u53cd\u4e86\u72b6\u6001\u673a\u7684\u5b89\u5168\u7279\u6027--\u201c\u5982\u679c\u4e00\u4e2a\u9886\u5bfc\u4eba\u5df2\u7ecf\u5728\u7ed9\u5b9a\u7684\u7d22\u5f15\u503c\u4f4d\u7f6e\u7684\u65e5\u5fd7\u6761\u76ee\u5e94\u7528\u5230\u72b6\u6001\u673a\u4e2d\uff0c\u90a3\u4e48\u5176\u4ed6\u4efb\u4f55\u7684\u670d\u52a1\u5668\u5728\u8fd9\u4e2a\u7d22\u5f15\u4f4d\u7f6e\u4e0d\u4f1a\u63d0\u4ea4\u4e00\u4e2a\u4e0d\u540c\u7684\u65e5\u5fd7\u201d\uff0craft\u8981\u5982\u4f55\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff1f<\/p>\n

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

\u51fa\u73b0\u8fd9\u4e2a\u95ee\u9898\u7684\u6839\u672c\u539f\u56e0\u662fS1\u5728\u65f6\u5e8f(c) \u7684\u4efb\u671f4\u5185\u63d0\u4ea4\u4e86\u4e00\u4e2a\u4e4b\u524d\u4efb\u671f2\u7684log\uff0c\u8fd9\u6837S1\u63d0\u4ea4\u7684\u65e5\u5fd7\u4e2d\u6700\u5927\u7684term\u4ec5\u4ec5\u662f2\uff0c\u90a3\u4e48\u4e00\u4e9b\u65e5\u5fd7\u6bd4\u8f83\u65e7\u7684server\uff0c\u6bd4\u5982S5(\u5b83\u6700\u65e5\u5fd7\u7684term\u4e3a 3)\uff0c\u5c31\u6709\u673a\u4f1a\u6210\u4e3aleader\uff0c\u5e76\u8986\u76d6S1\u63d0\u4ea4\u7684\u65e5\u5fd7\u3002\u89e3\u51b3\u529e\u6cd5\u5c31\u662fS1\u5728\u65f6\u5e8f(c)\u7684\u4efb\u671fterm4\u63d0\u4ea4term2\u7684\u65e7\u65e5\u5fd7\u65f6\uff0c\u65e7\u65e5\u5fd7\u5fc5\u987b\u9644\u5e26\u5728\u5f53\u524dterm 4\u7684\u65e5\u5fd7\u4e0b\u4e00\u8d77\u63d0\u4ea4\u3002\u8fd9\u6837\u5c31\u628aS1\u65e5\u5fd7\u7684\u6700\u5927term\u63d0\u9ad8\u5230\u4e864\uff0c\u8ba9\u90a3\u4e9b\u65e5\u5fd7\u6bd4\u8f83\u65e7\u7684S5\u6ca1\u6709\u673a\u4f1a\u7ade\u9009\u6210\u4e3aLeader\uff0c\u4e5f\u5c31\u4e0d\u4f1a\u7528\u65e7\u7684\u65e5\u5fd7\u8986\u76d6\u5df2\u7ecf\u63d0\u4ea4\u7684\u65e5\u5fd7\u4e86\u3002<\/p>\n

\u7b80\u5355\u70b9\u8bf4\uff0cLeader\u5982\u679c\u8981\u63d0\u4ea4\u4e4b\u524dterm\u7684\u65e7\u65e5\u5fd7\uff0c\u90a3\u4e48\u5fc5\u987b\u8981\u63d0\u4ea4\u4e00\u6761\u5f53\u524dterm\u7684\u65e5\u5fd7\u3002\u63d0\u4ea4\u4e00\u6761\u5f53\u524dterm\u7684\u65e5\u5fd7\u76f8\u5f53\u4e8e\u4e3a\u90a3\u4e9b\u65e7\u7684\u65e5\u5fd7\u52a0\u4e86\u4e00\u628a\u5b89\u5168\u9501\uff0c\u8ba9\u90a3\u4e9b\u65e5\u5fd7\u6bd4\u8f83\u65e7\u7684server\u5931\u53bb\u5f97\u5230Leader\u7684\u673a\u4f1a\uff0c\u4ece\u800c\u4e0d\u4f1a\u4fee\u6539\u90a3\u4e9b\u4e4b\u524dterm\u7684\u65e7\u65e5\u5fd7\u3002<\/p>\n

\u600e\u4e48\u5177\u4f53\u5b9e\u73b0\u65e7\u65e5\u5fd7\u5fc5\u987b\u9644\u5e26\u5728\u5f53\u524dterm\u7684\u65e5\u5fd7\u4e0b\u4e00\u8d77\u63d0\u4ea4\u5462\uff1f\u5728\u95ee\u98983\u4e2d\u6709\u7ed9\u51faappend_entries\u8bf7\u6c42\u4e2d\u7684\u5b57\u6bb5\uff0c\u5176\u4e2d\u6709\u4e24\u4e2a\u5b57\u6bb5preLogIndex\u548cpreLogTerm\u7684\u4f5c\u7528\u6ca1\u6709\u63d0\u5230\uff0c\u8fd9\u4e24\u4e2a\u5b57\u6bb5\u5c31\u662f\u4e3a\u4e86\u4fdd\u8bc1Leader\u548cFollowers\u7684\u5386\u53f2\u65e5\u5fd7\u5b8c\u5168\u4e00\u81f4\u800c\u5b58\u5728\u7684\u3002\u5f53Leader\u5728\u63d0\u4ea4\u4e00\u6761\u65b0\u65e5\u5fd7\u7684\u65f6\u5019\uff0c\u4f1a\u5e26\u4e0a\u65b0\u65e5\u5fd7\u524d\u4e00\u6761\u65e5\u5fd7\u7684index\u548cterm\uff0c\u5373preLogIndex\u548cpreLogTerm\u3002Follower\u6536\u5230append_entries\u540e\uff0c\u4f1a\u68c0\u67e5preLogIndex\u548cpreLogTerm\u662f\u5426\u548c\u81ea\u5df1\u5f53\u524d\u6700\u65b0\u90a3\u6761\u65e5\u5fd7\u7684index\u548cterm\u5bf9\u5f97\u4e0a\uff0c\u5982\u679c\u5bf9\u4e0d\u4e0a\u5c31\u4f1a\u7ed9Leader\u8fd4\u56de\u81ea\u5df1\u5f53\u524d\u65e5\u5fd7\u7684index\u548cterm\u3002Leader\u6536\u5230\u540e\u5c31\u5c06Follower\u8fd4\u56de\u7684index\u5bf9\u5e94\u7684\u65e5\u5fd7\u4ee5\u53ca\u5bf9\u5e94\u7684preLogIndex\u548cpreLogTerm\u53d1\u9001\u7ed9Follower\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u4e00\u76f4\u91cd\u590d\uff0c\u76f4\u5230Leader\u548cFollower\u627e\u5230\u4e86\u7b2c\u4e00\u4e2aindex\u548cterm\u80fd\u5bf9\u5f97\u4e0a\u7684\u65e5\u5fd7\uff0c\u7136\u540eLeader\u4ece\u8fd9\u6761\u65e5\u5fd7\u5f00\u59cb\u62f7\u8d1d\u7ed9Follower\u3002\u56de\u7b54\u6bb5\u9996\u7684\u95ee\u9898\uff0cLeader\u5728\u63d0\u4ea4\u4e00\u6761\u6700\u65b0\u7684\u65e5\u5fd7\u65f6\uff0cFollow\u4f1a\u68c0\u9a8c\u4e4b\u524d\u7684\u65e5\u5fd7\u662f\u5426\u4e0eLeader\u4fdd\u6301\u4e86\u4e00\u81f4\uff0c\u5982\u679c\u4e0d\u4e00\u81f4\u4f1a\u4e00\u76f4\u540c\u6b65\u5230\u4e0eLeader\u4e00\u81f4\u540e\u624d\u6dfb\u52a0\u6700\u65b0\u7684\u65e5\u5fd7\uff0c\u8fd9\u4e2a\u673a\u5236\u5c31\u4fdd\u8bc1\u4e86Leader\u5728\u63d0\u4ea4\u6700\u65b0\u65e5\u5fd7\u65f6\uff0c\u4e5f\u63d0\u4ea4\u4e86\u4e4b\u524d\u65e7\u7684\u65e5\u5fd7\u3002<\/p>\n

6\u3001\u5411raft\u7cfb\u7edf\u4e2d\u6dfb\u52a0\u65b0\u673a\u5668\u65f6\uff0c\u7531\u4e8e\u914d\u7f6e\u4fe1\u606f\u4e0d\u53ef\u80fd\u5728\u5404\u4e2a\u7cfb\u7edf\u4e0a\u540c\u65f6\u8fbe\u5230\u540c\u6b65\u72b6\u6001\uff0c\u603b\u4f1a\u6709\u67d0\u4e9bserver\u5148\u5f97\u5230\u65b0\u673a\u5668\u7684\u4fe1\u606f\uff0c\u6709\u4e9bserver\u540e\u5f97\u5230\u65b0\u673a\u5668\u7684\u4fe1\u606f\u3002\u6bd4\u5982\u4e0b\u56feraft\u7cfb\u7edf\u4e2d\u65b0\u589e\u52a0\u4e86server4\u548cserver5\u8fd9\u4e24\u53f0\u673a\u5668\u3002\u53ea\u6709server3\u7387\u5148\u611f\u77e5\u5230\u4e86\u8fd9\u4e24\u53f0\u673a\u5668\u7684\u6dfb\u52a0\u3002\u8fd9\u4e2a\u65f6\u5019\u5982\u679c\u8fdb\u884c\u9009\u4e3e\uff0c\u5c31\u6709\u53ef\u80fd\u51fa\u73b0\u4e24\u4e2aLeader\u9009\u4e3e\u6210\u529f\u3002\u56e0\u4e3aserver3\u8ba4\u4e3a\u67093\u53f0server\u7ed9\u5b83\u6295\u4e86\u7968\uff0c\u5b83\u5c31\u662fLeader\uff0c\u800cserver1\u8ba4\u4e3a\u53ea\u8981\u67092\u53f0server\u7ed9\u5b83\u6295\u7968\u5c31\u662fLeader\u4e86\u3002raft\u600e\u4e48\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u5462\uff1f<\/p>\n

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

\u4ea7\u751f\u8fd9\u4e2a\u95ee\u9898\u7684\u6839\u672c\u539f\u56e0\u662f\uff0craft\u7cfb\u7edf\u4e2d\u6709\u4e00\u90e8\u5206\u673a\u5668\u4f7f\u7528\u4e86\u65e7\u7684\u914d\u7f6e\uff0c\u5982server1\u548cserver2\uff0c\u6709\u4e00\u90e8\u5206\u4f7f\u7528\u65b0\u7684\u914d\u7f6e\uff0c\u5982server3\u3002\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u7684\u65b9\u6cd5\u662f\u6dfb\u52a0\u4e00\u4e2a\u4e2d\u95f4\u914d\u7f6e(Cold, Cnew)\uff0c\u8fd9\u4e2a\u4e2d\u95f4\u914d\u7f6e\u7684\u5185\u5bb9\u662f\u65e7\u7684\u914d\u7f6e\u8868Cold\u548c\u65b0\u7684\u914d\u7f6eCnew\u3002\u8fd8\u662f\u62ff\u4e0a\u56fe\u4e2d\u7684\u4f8b\u5b50\u6765\u8bf4\u660e\uff0c\u8fd9\u4e2a\u65f6\u5019server3\u6536\u5230\u6dfb\u52a0\u673a\u5668\u7684\u6d88\u606f\u540e\uff0c\u4e0d\u662f\u76f4\u63a5\u4f7f\u7528\u65b0\u7684\u914d\u7f6eCnew\uff0c\u800c\u662f\u4f7f\u7528(Cold, Cnew)\u6765\u505a\u51b3\u7b56\u3002\u6bd4\u5982\u8bf4server3\u5728\u7ade\u9009Leader\u7684\u65f6\u5019\uff0c\u4e0d\u4ec5\u9700\u8981\u5f97\u5230Cold\u4e2d\u7684\u5927\u90e8\u5206\u6295\u7968\uff0c\u8fd8\u8981\u5f97\u5230Cnew\u4e2d\u7684\u5927\u90e8\u5206\u6295\u7968\u624d\u80fd\u6210\u4e3aLeader\u3002\u8fd9\u6837\u5c31\u4fdd\u8bc1\u4e86server1\u548cserver2\u5728\u4f7f\u7528Cold\u914d\u7f6e\u7684\u60c5\u51b5\u4e0b\uff0c\u8fd8\u662f\u53ea\u53ef\u80fd\u4ea7\u751f\u4e00\u4e2aLeader\u3002\u5f53\u6240\u6709server\u90fd\u83b7\u5f97\u4e86\u6dfb\u52a0\u673a\u5668\u7684\u6d88\u606f\u540e\uff0c\u518d\u7edf\u4e00\u5207\u6362\u5230Cnew\u3002raft\u5b9e\u73b0\u4e2d\uff0c\u5c06Cold\uff0c(Cold,Cnew)\u4ee5\u53caCnew\u90fd\u5f53\u6210\u4e00\u6761\u666e\u901a\u7684\u65e5\u5fd7\u3002\u914d\u7f6e\u66f4\u6539\u4fe1\u606f\u53d1\u9001Leader\u540e\uff0c\u7531Leader\u5148\u6dfb\u52a0\u4e00\u6761 (Cold, Cnew)\u65e5\u5fd7\uff0c\u5e76\u540c\u6b65\u7ed9\u5176\u5b83Follower\u3002\u5f53\u8fd9\u6761\u65e5\u5fd7(Cold, Cnew)\u63d0\u4ea4\u540e\uff0c\u518d\u6dfb\u52a0\u4e00\u6761Cnew\u65e5\u5fd7\u540c\u6b65\u7ed9\u5176\u5b83Follower\uff0c\u901a\u8fc7Cnew\u65e5\u5fd7\u5c06\u6240\u6709Follower\u7684\u914d\u7f6e\u5207\u6362\u5230\u6700\u65b0\u3002<\/p>\n

\u6709\u7684raft\u5b9e\u73b0\u91c7\u7528\u4e86\u4e00\u79cd\u66f4\u52a0\u7b80\u5355\u7c97\u66b4\u7684\u65b9\u6cd5\u6765\u89e3\u51b3\u6210\u5458\u53d8\u5316\u7684\u95ee\u9898\u3002\u8fd9\u4e2a\u529e\u6cd5\u5c31\u662f\u6bcf\u6b21\u53ea\u66f4\u65b0\u4e00\u53f0\u673a\u5668\u7684\u914d\u7f6e\u53d8\u5316\uff0c\u6536\u5230\u914d\u7f6e\u53d8\u5316\u7684\u673a\u5668\u7acb\u9a6c\u91c7\u7528\u65b0\u7684\u914d\u7f6e\u3002\u8fd9\u6837\u7684\u505a\u6cd5\u4e3a\u4ec0\u4e48\u80fd\u786e\u4fdd\u5b89\u5168\u6027\u5462\uff1f\u4e0b\u9762\u4e3e\u4f8b\u8bf4\u660e\u3002\u6bd4\u5982\u8bf4\u7cfb\u7edf\u4e2d\u539f\u6765\u67095\u53f0\u673a\u5668A,B,C,D,E\uff0c\u73b0\u5728\u65b0\u52a0\u4e86\u4e00\u53f0\u673a\u5668F\uff0cA,B,C\u4e09\u53f0\u673a\u5668\u6ca1\u6709\u611f\u77e5\u5230F\u7684\u52a0\u5165\uff0c\u53ea\u6709D,E\u4e24\u53f0\u673a\u5668\u611f\u77e5\u5230\u4e86F\u7684\u52a0\u5165\u3002\u73b0\u5728\u5c31\u6709\u4e86\u4e24\u4e2a\u65e7\u673a\u5668\u96c6\u5408X\uff5bA, B, C, D, E}\u548c\u65b0\u673a\u5668\u96c6\u5408Y\uff5bF\uff5d\u3002\u5047\u8bbeA\u548cD\u540c\u65f6\u8fdb\u5165Candidate\u72b6\u6001\u53bb\u7ade\u9009Leader\uff0c\u5176\u4e2dD\u8981\u60f3\u7ade\u9009\u6210\u529f\uff0c\u5fc5\u987b\u5f97\u6709\u4e00\u534a\u4ee5\u4e0a\u673a\u5668\u6295\u7968\uff0c\u53736\/2+1=4\u53f0\u673a\u5668\uff0c\u5c31\u7b97Y\u96c6\u5408\u4e2d\u7684F\u673a\u5668\u7ed9D\u6295\u4e86\u7968\uff0c\u8fd8\u5f97\u81f3\u5c11\u5728\u96c6\u5408X\u4e2d\u5f97\u52303\u7968\uff1b\u800cA\u8981\u60f3\u7ade\u9009\u6210\u529f\uff0c\u4e5f\u5fc5\u987b\u5f97\u52305\/2+1 = 3\u5f20\u7968\uff0c\u7531\u4e8eA\u53ea\u77e5\u9053\u96c6\u5408X\u7684\u5b58\u5728\uff0c\u6240\u4ee5\u4e5f\u5fc5\u987b\u4ece\u96c6\u5408X\u4e2d\u83b7\u5f97\u81f3\u5c113\u7968\u3002\u800cA\u548cD\u4e0d\u53ef\u80fd\u540c\u65f6\u4ece\u96c6\u5408X\u540c\u65f6\u83b7\u5f973\u7968\uff0c\u6240\u4ee5A\u548cD\u4e0d\u53ef\u80fd\u540c\u65f6\u7ade\u9009\u6210\u4e3aLeader\uff0c\u4ece\u800c\u4fdd\u8bc1\u4e86\u5b89\u5168\u6027\u3002\u53ef\u4ee5\u4f7f\u7528\u66f4\u52a0\u5f62\u5f0f\u5316\u7684\u6570\u5b66\u516c\u5f0f\u6765\u8bc1\u660e\u4e00\u6b21\u6dfb\u52a0\u4e00\u53f0\u673a\u5668\u914d\u7f6e\u4e0d\u4f1a\u5bfc\u81f4\u4ea7\u751f\u4e24\u4e2aLeader\uff0c\u8bc1\u660e\u8fc7\u7a0b\u5c31\u6682\u65f6\u7701\u7565\u4e86\u3002<\/p>\n

 <\/p>\n

\u53c2\u8003\u8d44\u6599<\/h2>\n

raft\u8bba\u6587\u4e2d\u6587\u7ffb\u8bd1\uff1ahttps:\/\/github.com\/maemual\/raft-zh_cn\/blob\/master\/raft-zh_cn.md<\/a><\/p>\n

raft\u8bba\u6587\u82f1\u6587\u539f\u5740\uff1ahttps:\/\/raft.github.io\/raft.pdf<\/a><\/p>\n

raft\u4f7f\u7528C\u8bed\u8a00\u5b9e\u73b0\uff1ahttps:\/\/github.com\/willemt\/raft<\/a><\/p>\n

raft\u6210\u5458\u53d8\u66f4\u8fc7\u7a0b\u5206\u6790\uff1ahttp:\/\/blog.csdn.net\/zhang_shuai_2011\/article\/details\/38585725<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n<\/div>\n

\u4f5c\u8005\uff1aasmer
\n\u94fe\u63a5\uff1ahttps:\/\/www.jianshu.com\/p\/4711c4c32aab
\n\u4f86\u6e90\uff1a\u7b80\u4e66<\/p>\n<\/div>\n

 <\/p>\n

\u5176\u5b83\u53c2\u8003<\/strong><\/h2>\n

\u89e3\u8bfbRaft\uff08\u4e00 \u7b97\u6cd5\u57fa\u7840\uff09\uff1a https:\/\/www.cnblogs.com\/hzmark\/p\/raft.html<\/a><\/p>\n

\u89e3\u8bfbRaft\uff08\u4e8c \u9009\u4e3e\u548c\u65e5\u5fd7\u590d\u5236\uff09\uff1ahttps:\/\/www.cnblogs.com\/hzmark\/p\/raft_2.html<\/a><\/p>\n

\u89e3\u8bfbRaft\uff08\u4e09 \u5b89\u5168\u6027\uff09\uff1ahttps:\/\/www.cnblogs.com\/hzmark\/p\/raft_3.html<\/a><\/p>\n

\u89e3\u8bfbRaft\uff08\u56db \u6210\u5458\u53d8\u66f4\uff09\uff1ahttps:\/\/www.cnblogs.com\/hzmark\/p\/raft_4.html<\/a><\/p>\n

 <\/p>\n

..<\/p>\n

 <\/p>\n

 <\/p>\n

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

  \u6982\u8ff0 \u5f15\u7528\u8bba\u6587\u4e2d\u7684\u7b2c\u4e00\u53e5\u8bdd--\u201cRaft \u662f\u4e00\u79cd\u4e3a\u4e86\u7ba1\u7406\u590d\u5236\u65e5\u5fd7\u7684 … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[331],"tags":[],"class_list":["post-1413","post","type-post","status-publish","format-standard","hentry","category-protocol"],"_links":{"self":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/1413","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/comments?post=1413"}],"version-history":[{"count":0,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/1413\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/media?parent=1413"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/categories?post=1413"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/tags?post=1413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}