{"id":5448,"date":"2021-04-19T16:07:21","date_gmt":"2021-04-19T08:07:21","guid":{"rendered":"https:\/\/www.gbase8.cn\/?p=5448"},"modified":"2021-05-07T13:30:22","modified_gmt":"2021-05-07T05:30:22","slug":"%e8%bd%ac%e8%bd%bd%ef%bc%9araft%e5%88%86%e5%b8%83%e5%bc%8f%e4%b8%80%e8%87%b4%e6%80%a7%e5%8d%8f%e8%ae%ae%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/www.gbase8.cn\/en\/5448","title":{"rendered":"\u8f6c\u8f7d\uff1aRAFT\u5206\u5e03\u5f0f\u4e00\u81f4\u6027\u534f\u8bae\u4ecb\u7ecd"},"content":{"rendered":"<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/125573685\">https:\/\/zhuanlan.zhihu.com\/p\/125573685<\/a><\/p>\n\n\n\n<p>Raft\u534f\u8bae\u662f\u4e00\u79cd\u5206\u5e03\u5f0f\u4e00\u81f4\u6027\u534f\u8bae\uff0c\u76f8\u5bf9Paxos\u534f\u8bae\uff0c\u4ed6\u66f4\u597d\u7406\u89e3\uff0c\u4e0b\u9762\u6211\u4eec\u6765\u5168\u9762\u5206\u6790\u4e00\u4e0b\u4ed6\u7684\u6267\u884c\u539f\u7406\u3002<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Directory Navigation<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a2af86256fe3\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a2af86256fe3\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.gbase8.cn\/en\/5448\/#%E5%88%86%E5%B8%83%E5%BC%8F%E4%B8%80%E8%87%B4%E6%80%A7\" >\u5206\u5e03\u5f0f\u4e00\u81f4\u6027<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.gbase8.cn\/en\/5448\/#Raft%E5%8D%8F%E8%AE%AE%E6%A6%82%E8%BF%B0\" >Raft\u534f\u8bae\u6982\u8ff0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.gbase8.cn\/en\/5448\/#Leader%E9%80%89%E4%B8%BE%E8%BF%87%E7%A8%8B\" >Leader\u9009\u4e3e\u8fc7\u7a0b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.gbase8.cn\/en\/5448\/#%E6%97%A5%E5%BF%97%E5%A4%8D%E5%88%B6\" >\u65e5\u5fd7\u590d\u5236<\/a><\/li><\/ul><\/nav><\/div>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%88%86%E5%B8%83%E5%BC%8F%E4%B8%80%E8%87%B4%E6%80%A7\"><\/span>\u5206\u5e03\u5f0f\u4e00\u81f4\u6027<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u9996\u5148\u4ece\u4e00\u4e2a\u7b80\u5355\u4f8b\u5b50\u5165\u624b\uff0c\u5047\u8bbe\u6709\u4e2a\u5355\u8282\u70b9\u7cfb\u7edf\uff08\u5047\u8bbe\u8fd9\u4e2a\u5355\u70b9\u7cfb\u7edf\u662f\u4e2a\u6570\u636e\u5e93\u7cfb\u7edf\uff09\uff0c\u4ece\u5ba2\u6237\u7aef\u5199\u5165\u4e00\u4e2a\u65b0\u503c\u5230\u670d\u52a1\u5668\u8282\u70b9\uff0c\u5982\u4e0b\u56fe\u6240\u793a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-dfdf5e2306efa57e6b701e7da7c477c3_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u6b63\u6240\u8c13\u4e00\u4eba\u5403\u8dd1\uff0c\u5168\u5bb6\u4e0d\u997f\uff0c\u5f88\u660e\u663e\uff0c\u53ea\u8981\u6210\u529f\u5199\u5165\u4e00\u4e2a\u8282\u70b9\u5c31\u884c\u4e86\uff0c\u5728\u5355\u4e00\u8282\u70b9\u4e0a\u5b9e\u73b0\u4e00\u81f4\u6027\u662f\u5982\u6b64\u7b80\u5355\u3002<\/p>\n\n\n\n<p>\u4f46\u8bdd\u8bf4\u56de\u6765\uff0c\u5728\u4f01\u4e1a\u7ea7\u751f\u4ea7\u73af\u5883\u4e0b\u5355\u70b9\u90e8\u7f72\u51e0\u70b9\u51e0\u4e4e\u4e0d\u53ef\u80fd\uff0c\u5982\u4f55\u5728\u591a\u8282\u70b9\u7cfb\u7edf\u4e0b\u4fdd\u6301\u4e00\u81f4\u6027\u5462\uff1f\u8fd9\u5c31\u662f\u6211\u4eec\u9700\u8981\u8ba8\u8bba\u7684\u8bdd\u9898\u2014\u2014\u5206\u5e03\u5f0f\u4e00\u81f4\u6027\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Raft%E5%8D%8F%E8%AE%AE%E6%A6%82%E8%BF%B0\"><\/span>Raft\u534f\u8bae\u6982\u8ff0<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Raft\u662f\u5206\u5e03\u5f0f\u4e00\u81f4\u6027\u7684\u5b9e\u73b0\u534f\u8bae\uff0c\u6211\u4eec\u5148\u4ece\u66f4\u9ad8\u5c42\u6b21\u5927\u6982\u4e86\u89e3\u4e00\u4e0b\u4ed6\u5927\u6982\u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff08\u5728\u672c\u6587\u540e\u9762\u90e8\u5206\u518d\u6df1\u5165\u5256\u6790\u5de5\u4f5c\u7ec6\u8282\uff0c\u6bd4\u5982\u9009\u4e3b\u8fc7\u7a0b\u3001\u65e5\u5fd7\u590d\u5236\uff09\u3002<\/p>\n\n\n\n<p>\u4e00\u4e2a\u8282\u70b9\u67093\u79cd\u72b6\u6001\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Follower state.<\/li><li>Candidate state.<\/li><li>Leader state.<\/li><\/ol>\n\n\n\n<p>\u4e00\u5f00\u59cb\uff0c\u6240\u6709\u8282\u70b9\u90fd\u662fFollower\u72b6\u6001\uff0c\u6211\u4eec\u8ba4\u4e3a\u8fd9\u4e9b\u5904\u4e8eFollower\u72b6\u6001\u7684\u8282\u70b9\u53ebFollower\uff08\u8ffd\u968f\u8005\uff09,\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-3795765dde0b91aa487793ab58d55d4d_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5f53\u6240\u6709\u7684Follower\u90fd\u65e0\u6cd5\u611f\u77e5\u5230leader\u5b58\u5728\u65f6\uff0c\u8fd9\u662f\u4ed6\u4eec\u4f1a\u53d8\u6210\u4e00\u4e2acandidate\uff08\u53c2\u9009\u8005\uff09\uff0ccandidate\u53ef\u4ee5\u5411\u5176\u4ed6\u8282\u70b9\u53d1\u8d77\u6295\u7968\uff0c\u5176\u4ed6\u8282\u70b9\u53cd\u9988\u6295\u7968\u7ed3\u679c\uff0c\u5373\u662f\u540c\u610f\u8fd8\u662f\u9a73\u56de\uff0c\u5982\u679c\u6b64\u6b21\u6295\u7968\u83b7\u5f97\u4e86\u5927\u90e8\u5206\u8282\u70b9\u7684\u540c\u610f\uff0c\u5219candidate\u6210\u4e3a\u4e86\u65b0\u7684leader\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u5c31\u53ebLeader Election\uff08Leader\u9009\u4e3e\uff09\uff0c\u5982\u4e0b\u56fe\u6240\u793a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-aeed4a17c3fa9911d4a32fcc2abf7be8_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>Leader\u9009\u51fa\u6765\u4e4b\u540e\uff0c\u4efb\u4f55\u6539\u53d8\u90fd\u9700\u8981\u901a\u8fc7Leader\u6765\u4f20\u8fbe\uff0c\u505a\u6cd5\u662f\uff1a\u6bcf\u4e00\u6b21\u53d8\u66f4\u90fd\u4f1a\u4f5c\u4e3a\u4e00\u4e2aentry\u52a0\u5165\u5230Leader\u8282\u70b9\u65e5\u5fd7\u4e2d\uff0c\u8fd9\u65f6entry\u7684\u72b6\u6001\u662f\u672a\u63d0\u4ea4\u72b6\u6001\uff08uncommitted\uff09\uff0c\u6240\u4ee5\u8fd9\u5e76\u4e0d\u4f1a\u6539\u53d8\u8282\u70b9\u7684\u5f53\u524d\u503c\u3002\u4e3a\u4e86\u80fd\u591f\u63d0\u4ea4entry\uff0c\u9996\u5148\u9700\u8981\u505a\u7684\u662f\u5c06entry\u590d\u5236\u5230\u6240\u6709Follower\u8282\u70b9\uff0c\u7136\u540eleader\u5f00\u59cb\u7b49\u5f85\u76f4\u5230\u5927\u90e8\u5206\u8282\u70b9\u90fd\u5199\u5165\u6210\u529f\u4e86entry\u4e3a\u6b62\uff0c\u6700\u540eleader \u63d0\u4ea4entry\uff0c\u8282\u70b9\u503c\u53d1\u751f\u53d8\u66f4\uff0c\u5e76\u901a\u77e5\u6240\u6709Follower entry is committed\uff0c\u6700\u540e\u6240\u6709\u8282\u70b9\u90fd\u8fbe\u5230\u4e86\u4e00\u81f4\u7684\u72b6\u6001\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u53eb\u505a\u65e5\u5fd7\u590d\u5236\u3002\u6574\u4e2a\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-eb15e17d71e250f26de54288736b806a_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Leader%E9%80%89%E4%B8%BE%E8%BF%87%E7%A8%8B\"><\/span>Leader\u9009\u4e3e\u8fc7\u7a0b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Raft\u534f\u8bae\u79cd\u5b58\u5728\u4e24\u4e2a\u8d85\u65f6\u8bbe\u7f6e\u7528\u6765\u63a7\u5236\u9009\u4e3e\u8fc7\u7a0b\uff0c\u7b2c\u4e00\u4e2a\u8d85\u65f6\u8bbe\u7f6e\u662f\u9009\u4e3e\u8d85\u65f6\uff08election timeout\uff09\uff0c\u9009\u4e3e\u8d85\u65f6\u7528\u6765\u8bbe\u7f6e\u4e00\u4e2a\u8282\u70b9\u4eceFollower\u53d8\u6210\u4e00\u4e2acandidate\u6240\u9700\u8981\u7b49\u5f85\u7684\u65f6\u95f4\uff0c\u8fd9\u4e2a\u7b49\u5f85\u65f6\u95f4\u63a7\u5236\u5728150ms\u5230300ms\u4e4b\u95f4\uff0c\u8fd9\u4e2a\u7b49\u5f85\u65f6\u95f4\u662f\u968f\u673a\u7684\uff0c\u968f\u673a\u662f\u4e3a\u4e86\u5c3d\u91cf\u907f\u514d\u4ea7\u751f\u591a\u4e2acandidate\uff0c\u7ed9\u9009\u4e3b\u8fc7\u7a0b\u5236\u9020\u9ebb\u70e6\u3002candidate\u4ea7\u751f\u5982\u4e0b\u56fe\u6240\u793a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-a4d1113d791f5a2a3ab7375faab108c4_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5f533\u4e2a\u8282\u70b9\u90fd\u8bbe\u7f6eelection timeout\u65f6\uff0c\u8282\u70b9a\u8dd1\u5f97\u6bd4\u5176\u4ed6\u5176\u4ed6\u8282\u70b9\u5feb\u4e9b\u6210\u4e3a\u7b2c\u4e00\u4e2acandidate\uff0c\u5e76\u5f00\u59cb\u53d1\u8d77\u7b2c\u4e00\u8f6e\u9009\u4e3e\u3002\u8282\u70b9\u9996\u5148\u7ed9\u81ea\u5df1\u5148\u6295\u4e00\u7968\uff0c\u7136\u540e\u5411\u5176\u4ed6\u8282\u70b9\u53d1\u9001Request Vote\u6d88\u606f\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u5176\u4ed6\u8282\u70b9\u6536\u5230\u6d88\u606f\u540e\u53d1\u73b0\u5e76\u6ca1\u6709\u8fdb\u884c\u8fc7\u6b64\u6b21\u6295\u7968\uff0c\u5219\u4ed6\u5c31\u4f1a\u4e3acandidate\u8fdb\u884c\u4e00\u6b21\u6295\u7968\u5e76\u91cd\u7f6eelection timeout\uff0c\u4e00\u65e6candidate\u83b7\u5f97\u4e86\u5927\u591a\u6570\u9009\u7968\uff08\u5927\u591a\u6570\u4fdd\u8bc1\u6bcf\u4e00\u8f6e\u9009\u4e3e\u53ea\u6709\u4e00\u4e2acandidate\u4f1a\u83b7\u80dc\uff09\uff0c\u5219\u4ed6\u5c31\u4f1a\u53d8\u6210leader\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-9a826815cb67a595d3875dfecd3557a8_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u8282\u70b9a\u6210\u4e3aleader\u540e\uff0c\u4f1a\u95f4\u9694\u6307\u5b9a\u65f6\u95f4\u53d1\u9001Append Entries\u6d88\u606f\u7ed9\u4ed6\u7684Follower\uff0c\u95f4\u9694\u65f6\u95f4\u662f\u7531\u5fc3\u8df3\u8d85\u65f6\u63a7\u5236\u7684\uff08heartbeat timeout\uff0c\u5373\u7b2c\u4e8c\u79cd\u8d85\u65f6\u7c7b\u578b\uff09\uff0cfower\u6536\u5230\u6d88\u606f\u540e\u4f1a\u91cd\u7f6e\u7b49\u5f85\u65f6\u95f4\uff0c\u8fd9\u6837\u5c31\u80fd\u963b\u6b62Follower\u6210\u4e3acandidate\u3002\u5fc3\u8df3\u68c0\u6d4b\u8fc7\u7a0b\u5982\u4e0b:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-f0d6375a6e5e1ede5ce55ea9d89b1315_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u8fd9\u4e2a\u8fc7\u7a0b\u4f1a\u4e00\u76f4\u6301\u7eed\u4e0b\u53bb\u76f4\u5230\u4e00\u4e2aFollower\u505c\u6b62\u63a5\u6536heatbeats\uff0c\u5e76\u4e14\u6210\u4e3acandidate\u4e3a\u6b62\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0a\u5c31\u662f\u4e00\u4e2a\u5e38\u89c4\u9009\u4e3b\u8fc7\u7a0b\u3002<\/p>\n\n\n\n<p>\u4e0a\u6587\u6211\u4eec\u63d0\u5230\u5728Follower\u8f6c\u53d8\u6210candidate\u8fc7\u7a0b\u4e2d\u4f1a\u968f\u673a\u5206\u914d\u4e00\u4e2aelection timeout\u7ed9\u6bcf\u4e2a\u8282\u70b9\uff0c\u8fd9\u6837\u505a\u53ef\u4ee5\u5c3d\u91cf\u907f\u514d\u4ea7\u751f\u591a\u4e2acandidate\uff0c\u4f46\u5e76\u4e0d\u80fd100%\u4fdd\u8bc1\u4e0d\u51fa\u73b02\u4e2acandidate\u7684\u60c5\u51b5\u3002\u5f53\u51fa\u73b0\u4e862\u4e2a\u8282\u70b9\u6210\u4e3acandidate\uff0c\u6b64\u65f6\u9700\u8981\u5982\u4f55\u786e\u4fdd\u9009\u4e3b\u987a\u7545\u5462\uff1f<\/p>\n\n\n\n<p>\u5047\u8bbe\u8282\u70b9a\u3001b\u3001c\u540c\u65f6\u6210\u4e3acandidate\uff0c\u5e76\u4e14\u5404\u81ea\u53d1\u8d77\u4e86\u65b0\u4e00\u8f6e\u7684\u9009\u4e3e\uff0c\u9009\u4e3e\u8fc7\u7a0b\u5982\u4e0b<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-a869233fe610076e055dcd0490982b3e_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u4ece\u56fe\u4e2d\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0ca\u8282\u70b9\u83b7\u53d6\u4e862\u5f20\u9009\u7968\uff0c\u6bd4\u5176\u4ed6candidate\u591a\uff0c\u4f46\u5f88\u53ef\u60dc\uff0c\u7531\u4e8e\u4ecd\u6ca1\u6709\u6ee1\u8db3\u5927\u591a\u6570\u539f\u5219\uff08vote count\u9700&gt;= 4\/2 +1\uff09\uff0c\u6b64\u8bba\u9009\u4e3e\u5931\u8d25\uff0c\u5728\u4f11\u7720\u4e00\u6bb5\u65f6\u95f4\u540e\uff0c\u8282\u70b9\u4f1a\u518d\u6b21\u91cd\u8bd5\u4eceFollower -&gt; candidate -&gt; leader\u7684\u9009\u4e3e\u8fc7\u7a0b\uff0c\u76f4\u5230\u4ea7\u751fLeader\u4e3a\u6b62\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%97%A5%E5%BF%97%E5%A4%8D%E5%88%B6\"><\/span>\u65e5\u5fd7\u590d\u5236<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u4e00\u65e6\u6211\u4eec\u9009\u51fa\u4e86\u4e3b\uff0c\u90a3\u4e48\u4e3b\u5c31\u6709\u8d23\u4efb\u5c06\u7cfb\u7edf\u53d1\u751f\u7684\u6240\u6709\u53d8\u66f4\u590d\u5236\u5230\u6240\u6709\u8282\u70b9\u3002\u4e3b\u4f1a\u4f7f\u7528\u548c\u5fc3\u8df3\u76f8\u540c\u7684Append Entries\u6d88\u606f\u7528\u6765\u590d\u5236\u3002\u9996\u5148\uff0c\u5ba2\u6237\u7aef\u53d1\u8d77\u5199\u5165\u503c\u53d8\u66f4\uff0c\u4e3b\u4f1a\u5728\u4e0b\u4e00\u4e2a\u5fc3\u8df3\u5230\u6765\u65f6\u53d1\u9001\u53d8\u66f4\u65e5\u5fd7\u5230Follower\uff0c\u5f53\u4e3b\u6536\u5230\u5927\u591a\u6570Follower\u786e\u8ba4\u540e\uff0c\u63d0\u4ea4\u53d8\u66f4entry\uff0c\u7136\u540e\u5411\u5ba2\u6237\u7aef\u8fd4\u56de\u6210\u529f\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u6b63\u5982\u6211\u4eec\u5728\u6982\u8ff0\u5c0f\u8282\u63cf\u8ff0\u7684\u4e00\u6837\u3002<\/p>\n\n\n\n<p>set a = 5:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-eb15e17d71e250f26de54288736b806a_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>Raft\u725b\u903c\u4e4b\u5904\u5728\u4e8e\u7f51\u7edc\u5206\u533a\uff08\u6bd4\u5982\u8282\u70b9\u90e8\u7f72\u5728\u4e0d\u540c\u673a\u623f\uff0c\u4e0d\u540c\u7f51\u6bb5\uff09\u4e0b\u4ecd\u7136\u53ef\u4ee5\u786e\u4fdd\u8282\u70b9\u6570\u636e\u4e00\u81f4\u3002<\/p>\n\n\n\n<p>\u5047\u8bbe\u67095\u4e2a\u8282\u70b9\uff08abcde\uff09\u7ec4\u6210\u7684\u7f51\u7edc\uff0cab\u4f4d\u4e8e\u4e00\u4e2a\u673a\u623f\uff0ccde\u552f\u4e00\u4e00\u4e2a\u673a\u623f\uff0c\u6b64\u65f6\u7684leader\u662fa\u8282\u70b9\u3002\u7531\u4e8e\u7f51\u7edc\u6545\u969c\u9020\u62102\u4e2a\u673a\u623f\u8282\u70b9\u901a\u4fe1\u5931\u8d25\uff0c\u4f4d\u4e8e\u4e00\u4e2a\u673a\u623f\u7684cde\u53d1\u73b0leader\u5fc3\u8df3\u4e0d\u518d\u4e86\uff0c\u5219\u53d1\u8d77\u4e86\u9009\u4e3b\u8fc7\u7a0b\uff0c\u8282\u70b9c\u83b7\u5f97\u4e86\u591a\u6570\u9009\u7968\u6210\u4e3a\u4e86\u65b0\u7684Leader\uff0c\u6b64\u65f65\u4e2a\u8282\u70b9\u540c\u65f6\u5b58\u57282 Leader\uff08\u8001leade a\u8282\u70b9\uff0c\u65b0leader c\u8282\u70b9\uff09\uff0c\u5982\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-d8ff48a941a8ba74a1c6a582354a639a_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u63a5\u7740\uff0c\u6211\u4eec\u65b0\u589e\u4e00\u4e2a\u5ba2\u6237\u7aef\u8282\u70b9\uff0c\u8be5\u8282\u70b9\u5c1d\u8bd5\u4fee\u6539a\u7684\u503c\u4e3a3\uff0c\u7531\u4e8e\u8282\u70b9a\u65e0\u6cd5\u4e0ecde\u901a\u4fe1\uff0c\u5728\u505a\u65e5\u5fd7\u590d\u5236\u65f6\u65e0\u6cd5\u5f97\u5230\u5927\u591a\u6570\u7684\u5e94\u7b54\uff0c\u90a3\u4e48\u8fd9\u6761entry\u5c06\u4e00\u76f4\u662funcommited\u72b6\u6001\u3002\u800c\u53e6\u4e2a\u5ba2\u6237\u7aef\u5c1d\u8bd5\u4fee\u6539\u8282\u70b9c\u7684\u503c\u4e3a8\uff0c\u7531\u4e8e\u4ed6\u53ef\u4ee5\u83b7\u5f97\u5927\u591a\u6570\u7684\u5e94\u7b54\uff0c\u6240\u4ee5\u8fd9\u6b21\u64cd\u4f5centry\u53ef\u4ee5\u6b63\u5e38\u63d0\u4ea4\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-caa237fe3124f534576d1ef446758618_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u73b0\u5728\u7f51\u7edc\u6545\u969c\u6062\u590d\u4e86\uff0c\u8282\u70b9a\u548cb\u90fd\u4f1a\u5e7f\u64ad\u5fc3\u8df3\u5e76\u643a\u5e26\uff0c\u6b64\u65f6\u8282\u70b9b\u53d1\u73b0\u4e86\u66f4\u9ad8\u7684election term\uff0c\u5219\u81ea\u52a8\u5c06\u81ea\u5df1\u964d\u7ea7\u4e3afollower\uff0c\u4e14a\u548cb\u540c\u65f6\u9700\u8981\u56de\u6eda\u4ed6\u4eec\u4e3a\u63d0\u4ea4\u7684entries\uff0c\u5e76\u4e14\u5339\u914dnew leader\u65e5\u5fd7\uff0c\u5982\u4e0b\u56fe\u6240\u793a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-ca3f2cadc38f22381f82f202ba04bfbf_720w.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u597d\uff0c\u5dee\u4e0d\u591a\u8bb2\u5b8c\u4e86\uff0c\u89c9\u5f97\u6709\u6536\u83b7\u9ebb\u70e6\u70b9\u4e2a\u8d5e\uff0c\u8c22\u8c22\u3002<\/p>\n\n\n\n<p>The end.<\/p>\n\n\n\n<p>\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u6765\u6e90\uff0c\u5426\u5219\u4e25\u7981\u8f6c\u8f7d\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>Raft\u534f\u8bae\u662f\u4e00\u79cd\u5206\u5e03\u5f0f\u4e00\u81f4\u6027\u534f\u8bae\uff0c\u76f8\u5bf9Paxos\u534f\u8bae\uff0c\u4ed6\u66f4\u597d\u7406\u89e3\uff0c\u4e0b\u9762\u6211\u4eec\u6765\u5168\u9762\u5206\u6790\u4e00\u4e0b\u4ed6\u7684\u6267\u884c\u539f\u7406\u3002<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[100],"class_list":["post-5448","post","type-post","status-publish","format-standard","hentry","category-1","tag-100"],"_links":{"self":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/5448","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/comments?post=5448"}],"version-history":[{"count":1,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/5448\/revisions"}],"predecessor-version":[{"id":5449,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/5448\/revisions\/5449"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=5448"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=5448"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=5448"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}