{"id":2949,"date":"2025-04-05T14:57:00","date_gmt":"2025-04-05T06:57:00","guid":{"rendered":"https:\/\/guapicoding.com\/?p=2949"},"modified":"2025-04-17T21:50:44","modified_gmt":"2025-04-17T13:50:44","slug":"raft%e6%b7%b1%e5%b1%82%e5%89%96%e6%9e%90","status":"publish","type":"post","link":"https:\/\/guapicoding.com\/?p=2949","title":{"rendered":"Raft\u6df1\u5c42\u5256\u6790"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u6982\u8ff0<\/h2>\n\n\n\n<p>Raft \u662f\u4e00\u79cd\u5206\u5e03\u5f0f\u5171\u8bc6\u7b97\u6cd5\uff0c\u76f8\u6bd4\u4e8e Paxos\uff0c\u5b83\u6700\u5927\u7684\u7279\u6027\u5c31\u662f\u6613\u4e8e\u7406\u89e3\u3002\u4e3a\u4e86\u8fbe\u5230\u8fd9\u4e2a\u76ee\u6807\uff0cRaft \u4e3b\u8981\u505a\u4e86\u4e24\u65b9\u9762\u7684\u4e8b\u60c5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u95ee\u9898\u5206\u89e3\uff1a\u628a\u5171\u8bc6\u7b97\u6cd5\u5206\u4e3a\u4e09\u4e2a\u5b50\u95ee\u9898\uff0c\u5206\u522b\u662f<strong>\u9886\u5bfc\u8005\u9009\u4e3e<\/strong>(leaderelection)\u3001<strong>\u65e5\u5fd7\u590d\u5236<\/strong>(log replication)\u548c<strong>\u5b89\u5168\u6027<\/strong>(safety)\u3002<\/li>\n\n\n\n<li>\u72b6\u6001\u7b80\u5316\uff1a\u5bf9\u7b97\u6cd5\u505a\u51fa\u4e00\u4e9b\u9650\u5236\uff0c\u51cf\u5c11\u72b6\u6001\u6570\u91cf\u548c\u53ef\u80fd\u4ea7\u751f\u7684\u53d8\u52a8\u3002<br> <\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u590d\u5236\u72b6\u6001\u673a<\/h4>\n\n\n\n<p>\u76f8\u540c\u7684\u521d\u59cb\u72b6\u6001 + \u76f8\u540c\u7684\u8f93\u5165 = \u76f8\u540c\u7684\u7ed3\u675f\u72b6\u6001\uff0c\u5373\u5728\u591a\u4e2a\u8282\u70b9\u4e0a\uff0c\u4ece\u76f8\u540c\u7684\u521d\u59cb\u72b6\u6001\u5f00\u59cb\uff0c\u6267\u884c\u76f8\u540c\u7684\u4e00\u4e32\u547d\u4ee4\uff0c\u4f1a\u4ea7\u751f\u76f8\u540c\u7684\u6700\u7ec8\u72b6\u6001\u3002<br><br>\u5728 Raft \u4e2d\uff0cleader \u5c06\u5ba2\u6237\u7aef\u8bf7\u6c42(command)\u5c01\u88c5\u5230\u4e00\u4e2a\u4e2a log entry \u4e2d\uff0c\u5c06\u8fd9\u4e9b log entries \u590d\u5236\u5230\u6240\u6709follower \u8282\u70b9\uff0c\u7136\u540e\u5927\u5bb6\u6309\u76f8\u540c\u987a\u5e8f\u5e94\u7528 logentries \u4e2d\u7684 command\uff0c\u6839\u636e\u590d\u5236\u72b6\u6001\u673a\u7684\u7406\u8bba\uff0c\u5927\u5bb6\u7684\u7ed3\u675f\u72b6\u6001\u80af\u5b9a\u662f\u4e00\u81f4\u7684\u3002<\/p>\n\n\n\n<p>\u53ef\u4ee5\u8bf4\uff0c\u6211\u4eec\u4f7f\u7528\u5171\u8bc6\u7b97\u6cd5\uff0c\u5c31\u662f\u4e3a\u4e86\u5b9e\u73b0\u590d\u5236\u72b6\u6001\u673a\u3002\u4e00\u4e2a\u5206\u5e03\u5f0f\u573a\u666f\u4e0b\u7684\u5404\u8282\u70b9\u95f4\uff0c\u5c31\u662f\u901a\u8fc7\u5171\u8bc6\u7b97\u6cd5\u6765\u4fdd\u8bc1\u547d\u4ee4\u5e8f\u5217\u7684\u4e00\u81f4\uff0c\u4ece\u800c\u59cb\u7ec8\u4fdd\u6301\u5b83\u4eec\u7684\u72b6\u6001\u4e00\u81f4\uff0c\u4ece\u800c\u5b9e\u73b0\u9ad8\u53ef\u7528\uff08\u6295\u7968\u9009\u4e3b\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u547d\u4ee4\uff09\u3002<\/p>\n\n\n\n<p><br>\u5176\u5b9e\u590d\u5236\u72b6\u6001\u673a\u7684\u529f\u80fd\u53ef\u4ee5\u66f4\u52a0\u5f3a\u5927\uff0c\u6bd4\u5982\u4e24\u4e2a\u526f\u672c\u4e00\u4e2a\u91c7\u7528\u884c\u5b58\u50a8\u7684\u6570\u636e\u7ed3\u6784\u5b58\u50a8\u6570\u636e\uff0c\u53e6\u4e00\u4e2a\u91c7\u7528\u5217\u5b58\u50a8\uff0c\u53ea\u8981\u5b83\u4eec\u521d\u59cb\u6570\u636e\u76f8\u540c\uff0c\u5e76\u6301\u7eed\u53d1\u7ed9\u4ed6\u4eec\u76f8\u540c\u7684\u547d\u4ee4\uff0c\u90a3\u4e48\u540c\u4e00\u65f6\u523b\u4ece\u4e24\u4e2a\u526f\u672c\u4e2d\u8bfb\u53d6\u5230\u7684\u7ed3\u679c\u4e5f\u662f\u4e00\u6837\u7684\uff0c\u8fd9\u5c31\u662f\u4e00\u79cd HTAP \u7684\u5b9e\u73b0\u65b9\u6cd5\uff08\u6bd4\u5982 TiDB\uff09\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/1744873815622.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"429\" height=\"273\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/1744873815622.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2952\"  sizes=\"auto, (max-width: 429px) 100vw, 429px\" \/><\/div><\/figure>\n<\/div>\n\n\n<h4 class=\"wp-block-heading\">\u72b6\u6001\u7b80\u5316<\/h4>\n\n\n\n<p>\u5728\u4efb\u4f55\u65f6\u523b\uff0c\u6bcf\u4e00\u4e2a\u670d\u52a1\u5668<strong>\u8282\u70b9\u90fd\u5904\u4e8e leader\u3001follower \u6216 candidate \u8fd9\u4e09\u4e2a\u72b6\u6001\u4e4b\u4e00<\/strong>\u3002\u76f8\u6bd4\u4e8e Paxos\uff0c\u8fd9\u4e00\u70b9\u6781\u5927\u5730\u7b80\u5316\u4e86\u7b97\u6cd5\u7684\u5b9e\u73b0\u3002\u56e0\u4e3a Raft \u53ea\u9700\u8003\u8651\u72b6\u6001\u7684\u5207\u6362\uff0c\u800c\u4e0d\u7528\u50cf Paxos \u90a3\u6837\u8003\u8651\u72b6\u6001\u4e4b\u95f4\u7684\u5171\u5b58\u548c\u4e92\u76f8\u5f71\u54cd\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"542\" height=\"223\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2955\"  sizes=\"auto, (max-width: 542px) 100vw, 542px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>Raft \u628a\u65f6\u95f4\u5206\u5272\u6210\u4efb\u610f\u957f\u5ea6\u7684<strong>\u4efb\u671f<\/strong>(term)\uff0c\u4efb\u671f\u7528\u8fde\u7eed\u7684\u6574\u6570\u6807\u8bb0\uff0c\u6bcf\u4e00\u6bb5\u4efb\u671f\u4ece\u4e00\u6b21\u9009\u4e3e\u5f00\u59cb\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4e00\u6b21\u9009\u4e3e\u65e0\u6cd5\u9009\u51fa leader\uff08\u6bd4\u5982\u4e24\u4e2a\u8282\u70b9\u6536\u5230\u4e86\u76f8\u540c\u7684\u7968\u6570\uff09\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u8fd9\u4e00\u4efb\u671f\u4f1a\u4ee5\u6ca1\u6709 leader \u7ed3\u675f\uff0c\u4e00\u4e2a\u65b0\u7684\u4efb\u671f\uff08\u5305\u542b\u4e00\u6b21\u65b0\u7684\u9009\u4e3e\uff09\u4f1a\u5f88\u5feb\u91cd\u65b0\u5f00\u59cb\u3002Raft \u4fdd\u8bc1\u5728\u4efb\u610f\u4e00\u4e2a\u4efb\u671f\u5185\uff0c\u6700\u591a\u53ea\u6709\u4e00\u4e2a leader\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image-1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"449\" height=\"187\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image-1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2957\"  sizes=\"auto, (max-width: 449px) 100vw, 449px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>Raft \u7b97\u6cd5\u4e2d\u670d\u52a1\u5668\u8282\u70b9\u4e4b\u95f4\u4f7f\u7528 RPC \u8fdb\u884c\u901a\u4fe1\uff0c\u5e76\u4e14 <strong>Raft \u4e2d\u53ea\u6709\u4e24\u79cd\u4e3b\u8981\u7684 RPC<\/strong>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>RequestVote RPC\uff08\u8bf7\u6c42\u6295\u7968\uff09\uff1a\u7531 candidate \u5728\u9009\u4e3e\u671f\u95f4\u53d1\u8d77\u3002<\/li>\n\n\n\n<li>AppendEntries RPC\uff08\u8ffd\u52a0\u6761\u76ee\uff09\uff1a\u7531 leader \u53d1\u8d77\uff0c\u7528\u6765\u590d\u5236\u65e5\u5fd7\u548c\u63d0\u4f9b\u4e00\u79cd\u5fc3\u8df3\u673a\u5236\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u670d\u52a1\u5668\u4e4b\u95f4\u901a\u4fe1\u7684\u65f6\u5019\u4f1a\u4ea4\u6362\u5f53\u524d\u4efb\u671f\u53f7\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u4e00\u4e2a\u670d\u52a1\u5668\u4e0a\u7684\u5f53\u524d\u4efb\u671f\u53f7\u6bd4\u5176\u4ed6\u7684\u5c0f\uff0c\u8be5\u670d\u52a1\u5668\u4f1a\u5c06\u81ea\u5df1\u7684\u4efb\u671f\u53f7\u66f4\u65b0\u4e3a\u8f83\u5927\u7684\u90a3\u4e2a\u503c\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u4e00\u4e2a candidate \u6216\u8005 leader \u53d1\u73b0\u81ea\u5df1\u7684\u4efb\u671f\u53f7\u8fc7\u671f\u4e86\uff0c\u5b83\u4f1a\u7acb\u5373\u56de\u5230 follower \u72b6\u6001\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u4e00\u4e2a\u8282\u70b9\u63a5\u6536\u5230\u4e00\u4e2a\u5305\u542b\u8fc7\u671f\u7684\u4efb\u671f\u53f7\u7684\u8bf7\u6c42\uff0c\u5b83\u4f1a\u76f4\u63a5\u62d2\u7edd\u8fd9\u4e2a\u8bf7\u6c42\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u9886\u5bfc\u8005\u9009\u4e3e<\/h2>\n\n\n\n<p>Raft \u5185\u90e8\u6709\u4e00\u79cd<strong>\u5fc3\u8df3\u673a\u5236<\/strong>\uff0c\u5982\u679c\u5b58\u5728 leader\uff0c\u90a3\u4e48\u5b83\u5c31\u4f1a\u5468\u671f\u6027\u5730\u5411\u6240\u6709 follower \u53d1\u9001\u5fc3\u8df3\uff0c\u6765\u7ef4\u6301\u81ea\u5df1\u7684\u5730\u4f4d\u3002\u5982\u679c follower \u4e00\u6bb5\u65f6\u95f4\u6ca1\u6709\u6536\u5230\u5fc3\u8df3\uff0c\u90a3\u4e48\u5b83\u5c31\u4f1a\u8ba4\u4e3a\u7cfb\u7edf\u4e2d\u6ca1\u6709\u53ef\u7528\u7684 leader \u4e86\uff0c\u7136\u540e\u5f00\u59cb\u8fdb\u884c\u9009\u4e3e\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image-2.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"373\" height=\"337\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image-2.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2963\"  sizes=\"auto, (max-width: 373px) 100vw, 373px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>\u5f00\u59cb\u4e00\u4e2a\u9009\u4e3e\u8fc7\u7a0b\u540e\uff0cfollower \u5148<strong>\u589e\u52a0\u81ea\u5df1\u7684\u5f53\u524d\u4efb\u671f\u53f7<\/strong>\uff0c\u5e76<strong>\u8f6c\u6362\u5230 candidate \u72b6\u6001<\/strong>\u3002\u7136\u540e<strong>\u6295\u7968\u7ed9\u81ea\u5df1<\/strong>\uff0c\u5e76\u4e14\u5e76\u884c\u5730<strong>\u5411\u96c6\u7fa4\u4e2d\u7684\u5176\u4ed6\u670d\u52a1\u5668\u8282\u70b9\u53d1\u9001\u6295\u7968\u8bf7\u6c42<\/strong>(RequestVote RPC)\u3002<\/p>\n\n\n\n<p>\u6700\u7ec8\u4f1a\u6709\u4e09\u79cd\u7ed3\u679c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b83\u83b7\u5f97\u8d85\u8fc7\u534a\u6570\u9009\u7968\u8d62\u5f97\u4e86\u9009\u4e3e -> \u6210\u4e3a\u4e3b\u5e76\u5f00\u59cb\u53d1\u9001\u5fc3\u8df3\u3002<\/li>\n\n\n\n<li>\u5176\u4ed6\u8282\u70b9\u8d62\u5f97\u4e86\u9009\u4e3e -> \u6536\u5230\u65b0 leader \u7684\u5fc3\u8df3\u540e\uff0c\u5982\u679c\u65b0 leader \u7684\u4efb\u671f\u53f7\u4e0d\u5c0f\u4e8e\u81ea\u5df1\u5f53\u524d\u7684\u4efb\u671f\u53f7\uff0c\u90a3\u4e48\u5c31\u4ece candidate \u56de\u5230 follower \u72b6\u6001\u3002<\/li>\n\n\n\n<li>\u4e00\u6bb5\u65f6\u95f4\u4e4b\u540e\u6ca1\u6709\u4efb\u4f55\u83b7\u80dc\u8005 -> \u6bcf\u4e2a candidate \u90fd\u5728\u4e00\u4e2a\u81ea\u5df1\u7684\u968f\u673a\u9009\u4e3e\u8d85\u65f6\u65f6\u95f4\u540e\u589e\u52a0\u4efb\u671f\u53f7\u5f00\u59cb\u65b0\u4e00\u8f6e\u6295\u7968\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e3a\u4ec0\u4e48\u4f1a\u6ca1\u6709\u83b7\u80dc\u8005\uff1f\u6bd4\u5982\u6709\u591a\u4e2a folower \u540c\u65f6\u6210\u4e3a candidate\uff0c\u5f97\u7968\u592a\u8fc7\u5206\u6563\uff0c\u6ca1\u6709\u4efb\u4f55\u4e00\u4e2a candidate \u5f97\u7968\u8d85\u8fc7\u534a\u6570\u3002<\/p>\n\n\n\n<p>\u5bf9\u4e8e\u6ca1\u6709\u6210\u4e3a candidate \u7684 follower \u8282\u70b9\uff0c\u5bf9\u4e8e\u540c\u4e00\u4e2a\u4efb\u671f\uff0c\u4f1a\u6309\u7167\u5148\u6765\u5148\u5f97\u7684\u539f\u5219\u6295\u51fa\u81ea\u5df1\u7684\u9009\u7968\u3002\u6bd4\u5982\u7cfb\u7edf\u521a\u5f00\u59cb\uff0c\u6240\u6709\u8282\u70b9\u90fd\u662f follower\uff0c\u7b2c\u4e00\u4e2a\u610f\u8bc6\u5230\u6ca1\u6709 leader \u7684 follower \u4f1a\u589e\u52a0\u81ea\u5df1\u7684\u4efb\u671f\u53f7\u5e76\u8f6c\u6362\u5230 candidate \u72b6\u6001\u3002\u7136\u540e\u6295\u7968\u7ed9\u81ea\u5df1\uff0c\u5e76\u4e14\u5e76\u884c\u5730\u5411\u96c6\u7fa4\u4e2d\u7684\u5176\u4ed6\u8282\u70b9\u53d1\u9001\u6295\u7968\u8bf7\u6c42\u3002\u8fd9\u4e2a\u5148\u6765\u4f18\u52bf\u5f80\u5f80\u4f1a\u8ba9\u5b83\u6210\u4e3a leader\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image-4.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"848\" height=\"286\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image-4.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2968\"  sizes=\"auto, (max-width: 848px) 100vw, 848px\" \/><\/div><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">\u65e5\u5fd7\u590d\u5236<\/h2>\n\n\n\n<p>leader \u88ab\u9009\u4e3e\u51fa\u6765\u540e\uff0c\u5f00\u59cb\u4e3a\u5ba2\u6237\u7aef\u8bf7\u6c42\u63d0\u4f9b\u670d\u52a1\u3002\u4f46\u5ba2\u6237\u7aef\u600e\u4e48\u77e5\u9053\u65b0 leader \u662f\u54ea\u4e2a\u8282\u70b9\u5462\uff1f<\/p>\n\n\n\n<p>\u5ba2\u6237\u7aef\u968f\u673a\u5411\u4e00\u4e2a\u8282\u70b9\uff08\u6216\u8005\u8001 leader\uff09\u53d1\u9001\u8bf7\u6c42\uff0c\u8fd9\u65f6\u4f1a\u6709\u4e09\u79cd\u60c5\u51b5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u4e2a\u8282\u70b9\u6b63\u597d\u662f leader\uff0c\u4e0d\u7528\u518d\u627e\u4e86\uff0c\u6267\u884c\u6307\u4ee4\u5373\u53ef\u3002<\/li>\n\n\n\n<li>\u8fd9\u4e2a\u8282\u70b9\u662f follower\uff0c\u90a3\u4e48\u5b83\u53ef\u4ee5\u901a\u8fc7\u5fc3\u8df3\u5f97\u77e5 leader \u7684 ID\uff0c\u7136\u540e\u544a\u77e5\u5ba2\u6237\u7aef\u8be5\u627e\u8c01\u3002<\/li>\n\n\n\n<li>\u8fd9\u4e2a\u8282\u70b9\u5b95\u673a\u4e86\uff0c\u6ca1\u6709\u54cd\u5e94\uff0c\u90a3\u4e48\u5ba2\u6237\u7aef\u4f1a\u518d\u968f\u673a\u5411\u53e6\u4e00\u4e2a\u8282\u70b9\u53d1\u9001\u8bf7\u6c42\uff0c\u91cd\u590d\u51e0\u6b21\uff0c\u603b\u4f1a\u627e\u5230 leader\u3002<\/li>\n<\/ul>\n\n\n\n<p>leader \u63a5\u6536\u5230\u5ba2\u6237\u7aef\u7684\u6307\u4ee4\u540e\uff0c\u4f1a\u628a\u6307\u4ee4\u4f5c\u4e3a\u4e00\u4e2a\u65b0\u7684\u6761\u76ee\u8ffd\u52a0\u5230\u65e5\u5fd7\u4e2d\u53bb\u3002\u4e00\u6761\u65e5\u5fd7\u9700\u8981\u5177\u6709\u4e09\u4e2a\u4fe1\u606f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u72b6\u6001\u673a\u6307\u4ee4<\/li>\n\n\n\n<li>leader \u7684\u4efb\u671f\u53f7<\/li>\n\n\n\n<li>\u65e5\u5fd7\u53f7\uff08\u65e5\u5fd7\u7d22\u5f15\uff09<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image-5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"509\" height=\"397\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image-5.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2969\"  sizes=\"auto, (max-width: 509px) 100vw, 509px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>leader \u5e76\u884c\u53d1\u9001 AppendEntries RPC \u7ed9 follower\uff0c\u8ba9\u5b83\u4eec\u590d\u5236\u8be5\u6761\u76ee\u3002\u5f53\u8be5\u6761\u76ee\u88ab\u8d85\u8fc7\u534a\u6570\u7684 follower \u590d\u5236\u540e\uff0cleader \u5c31\u53ef\u4ee5\u5728\u672c\u5730\u6267\u884c\u8be5\u6307\u4ee4\u5e76\u628a\u7ed3\u679c\u8fd4\u56de\u5ba2\u6237\u7aef\u3002<br>\u6211\u4eec\u628a\u672c\u5730\u6267\u884c\u6307\u4ee4\uff0c\u4e5f\u5c31\u662f leader \u5e94\u7528\u65e5\u5fd7\u4e0e\u72b6\u6001\u673a\u8fd9\u4e00\u6b65\uff0c\u79f0\u4f5c<strong>\u63d0\u4ea4<\/strong>\u3002<\/p>\n\n\n\n<p>\u5728\u6b64\u8fc7\u7a0b\u4e2d\uff0cleader \u6216 follower \u968f\u65f6\u90fd\u6709\u5d29\u6e83\u6216\u7f13\u6162\u7684\u53ef\u80fd\u6027\uff0cRaft \u5fc5\u987b\u8981\u5728\u6709\u5b95\u673a\u7684\u60c5\u51b5\u4e0b\u7ee7\u7eed\u652f\u6301\u65e5\u5fd7\u590d\u5236\uff0c\u5e76\u4e14\u4fdd\u8bc1\u6bcf\u4e2a\u526f\u672c\u65e5\u5fd7\u987a\u5e8f\u7684\u4e00\u81f4\uff08\u4ee5\u4fdd\u8bc1\u590d\u5236\u72b6\u6001\u673a\u7684\u5b9e\u73b0\uff09\u3002\u8fd9\u91cc\u5206\u4e3a\u4e09\u79cd\u60c5\u51b5\u8fdb\u884c\u63a2\u8ba8\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>follower \u7f13\u6162<\/li>\n\n\n\n<li>follower \u5b95\u673a<\/li>\n\n\n\n<li>leader \u5b95\u673a<\/li>\n<\/ul>\n\n\n\n<p>\u2460\u5982\u679c\u6709 follower \u56e0\u4e3a\u67d0\u4e9b\u539f\u56e0\u6ca1\u6709\u7ed9 leader \u54cd\u5e94\uff0c\u90a3\u4e48 leader \u4f1a\u4e0d\u65ad\u5730<strong>\u91cd\u53d1<\/strong>\u8ffd\u52a0\u6761\u76ee\u8bf7\u6c42\uff08AppendEntries RPC\uff09\uff0c\u54ea\u6015 leader \u5df2\u7ecf\u56de\u590d\u4e86\u5ba2\u6237\u7aef\uff08\u5373 leader \u5df2\u7ecf\u628a\u65e5\u5fd7\u590d\u5236\u7ed9\u4e86\u8d85\u8fc7\u534a\u6570\u7684\u8282\u70b9\uff0c\u5df2\u7ecf\u63d0\u4ea4\u4e86\uff0c\u4f46\u4e0d\u80fd\u653e\u5f03\u843d\u540e\u7684 follower\uff0cleader \u4f1a\u4e0d\u65ad\u91cd\u53d1\uff0c\u76f4\u81f3\u8be5 follower \u8ffd\u4e0a\u65e5\u5fd7\uff09\u3002<br>\u2461\u5982\u679c\u6709 folower \u5d29\u6e83\u540e\u6062\u590d\uff0c\u8fd9\u65f6 Raft \u8ffd\u52a0\u6761\u76ee\u7684\u4e00\u81f4\u6027\u68c0\u67e5\u751f\u6548\uff0c\u4fdd\u8bc1 follower \u80fd\u6309\u987a\u5e8f\u6062\u590d\u5d29\u6e83\u540e\u7684\u7f3a\u5931\u7684\u65e5\u5fd7\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Raft\u7684\u4e00\u81f4\u6027\u68c0\u67e5\uff1aleader \u5728\u6bcf\u4e00\u4e2a\u53d1\u5f80 follower \u7684\u8ffd\u52a0\u6761\u76ee RPC \u4e2d\uff0c\u4f1a\u653e\u5165\u524d\u4e00\u4e2a\u65e5\u5fd7\u6761\u76ee\u7684\u7d22\u5f15\u4f4d\u7f6e\u548c\u4efb\u671f\u53f7\uff0c\u5982\u679c follower \u5728\u5b83\u7684\u65e5\u5fd7\u4e2d\u627e\u4e0d\u5230\u524d\u4e00\u4e2a\u65e5\u5fd7\uff0c\u90a3\u4e48\u5b83\u5c31\u4f1a\u62d2\u7edd\u6b64\u65e5\u5fd7\uff0cleader \u6536\u5230 follower \u7684\u62d2\u7edd\u540e\uff0c\u4f1a\u53d1\u9001\u524d\u4e00\u4e2a\u65e5\u5fd7\u6761\u76ee\uff0c\u4ece\u800c\u9010\u6e10\u5411\u524d\u5b9a\u4f4d\u5230 follower \u7b2c\u4e00\u4e2a\u7f3a\u5931\u7684\u65e5\u5fd7\u3002<br> <\/li>\n<\/ul>\n\n\n\n<p>\u2462\u5982\u679c leader \u5d29\u6e83\uff0c\u90a3\u4e48\u5d29\u6e83\u7684 leader \u53ef\u80fd\u5df2\u7ecf\u590d\u5236\u4e86\u65e5\u5fd7\u5230\u90e8\u5206 follower \u4f46\u8fd8\u6ca1\u6709\u63d0\u4ea4\uff0c\u800c\u88ab\u9009\u51fa\u7684\u65b0 leader \u53c8\u53ef\u80fd\u4e0d\u5177\u5907\u8fd9\u4e9b\u65e5\u5fd7\uff0c\u8fd9\u6837\u5c31\u6709\u90e8\u5206 follower \u4e2d\u7684\u65e5\u5fd7\u548c\u65b0 leader \u7684\u65e5\u5fd7\u4e0d\u76f8\u540c\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cleader \u901a\u8fc7\u5f3a\u5236 follower \u590d\u5236\u5b83\u7684\u65e5\u5fd7\u6765\u89e3\u51b3\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\uff0c\u8fd9\u610f\u5473\u7740 follower \u4e2d\u8ddf leader \u51b2\u7a81\u7684\u65e5\u5fd7\u6761\u76ee\u4f1a\u88ab\u65b0 leader \u7684\u65e5\u5fd7\u6761\u76ee<strong>\u8986\u76d6<\/strong>\uff08<strong>\u56e0\u4e3a\u6ca1\u6709\u63d0\u4ea4\uff0c\u6240\u4ee5\u4e0d\u8fdd\u80cc\u5916\u90e8\u4e00\u81f4\u6027<\/strong>\uff09\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image-6.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"514\" height=\"356\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image-6.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2970\"  sizes=\"auto, (max-width: 514px) 100vw, 514px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>\u901a\u8fc7\u8fd9\u79cd\u673a\u5236\uff0cleader \u5728\u5f53\u6743\u4e4b\u540e\u5c31\u4e0d\u9700\u8981\u4efb\u4f55\u7279\u6b8a\u7684\u64cd\u4f5c\u6765\u4f7f\u65e5\u5fd7\u6062\u590d\u5230\u4e00\u81f4\u72b6\u6001\u3002leader \u53ea\u9700\u8981\u8fdb\u884c\u6b63\u5e38\u7684\u64cd\u4f5c\uff0c\u7136\u540e\u65e5\u5fd7\u5c31\u80fd\u5728\u56de\u590d AppendEntries \u4e00\u81f4\u6027\u68c0\u67e5\u5931\u8d25\u7684\u65f6\u5019\u81ea\u52a8\u8d8b\u4e8e\u4e00\u81f4\u3002leader \u4ece\u6765\u4e0d\u4f1a\u8986\u76d6\u6216\u8005\u5220\u9664\u81ea\u5df1\u7684\u65e5\u5fd7\u6761\u76ee\uff08Append-Only\uff09\u3002<\/p>\n\n\n\n<p>\u8fd9\u6837\u7684\u65e5\u5fd7\u590d\u5236\u673a\u5236\uff0c\u5c31\u53ef\u4ee5\u4fdd\u8bc1\u4e00\u81f4\u6027\u7279\u6027\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53ea\u8981\u8fc7\u534a\u7684\u670d\u52a1\u5668\u80fd\u6b63\u5e38\u8fd0\u884c\uff0cRaft \u5c31\u80fd\u591f\u63a5\u53d7\u3001\u590d\u5236\u5e76\u5e94\u7528\u65b0\u7684\u65e5\u5fd7\u6761\u76ee\u3002<\/li>\n\n\n\n<li>\u5728\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u65b0\u7684\u65e5\u5fd7\u6761\u76ee\u53ef\u4ee5\u5728\u4e00\u4e2a RPC \u6765\u56de\u4e2d\u88ab\u590d\u5236\u7ed9\u96c6\u7fa4\u4e2d\u7684\u8fc7\u534a\u673a\u5668\u3002<\/li>\n\n\n\n<li>\u5355\u4e2a\u8fd0\u884c\u6162\u7684 follower \u4e0d\u4f1a\u5f71\u54cd\u6574\u4f53\u7684\u6027\u80fd\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image-7.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"844\" height=\"320\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image-7.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2971\"  sizes=\"auto, (max-width: 844px) 100vw, 844px\" \/><\/div><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">\u5b89\u5168\u6027<\/h2>\n\n\n\n<p>\u9886\u5bfc\u8005\u9009\u4e3e\u548c\u65e5\u5fd7\u590d\u5236\u4e24\u4e2a\u5b50\u95ee\u9898\u5b9e\u9645\u4e0a\u5df2\u7ecf\u6db5\u76d6\u4e86\u5171\u8bc6\u7b97\u6cd5\u7684\u5168\u7a0b\uff0c\u4f46\u8fd9\u4e24\u70b9\u8fd8\u4e0d\u80fd\u5b8c\u5168\u4fdd\u8bc1\u6bcf\u4e00\u4e2a\u72b6\u6001\u673a\u4f1a\u6309\u7167\u76f8\u540c\u7684\u987a\u5e8f\u6267\u884c\u76f8\u540c\u7684\u547d\u4ee4\u3002\u56e0\u6b64 Raft \u901a\u8fc7\u51e0\u4e2a\u8865\u5145\u89c4\u5219\u5b8c\u5584\u6574\u4e2a\u7b97\u6cd5\uff0c\u4f7f\u7b97\u6cd5\u53ef\u4ee5\u5728\u5404\u7c7b\u5b95\u673a\u95ee\u9898\u4e0b\u90fd\u4e0d\u51fa\u9519\u3002\u8fd9\u4e9b\u89c4\u5219\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>leader \u5b95\u673a\u5904\u7406\uff1a\u9009\u4e3e\u9650\u5236<\/li>\n\n\n\n<li>leader \u5b95\u673a\u5904\u7406\uff1a\u65b0 leader \u662f\u5426\u63d0\u4ea4\u4e4b\u524d\u4efb\u671f\u5185\u7684\u65e5\u5fd7\u6761\u76ee<\/li>\n\n\n\n<li>follower \u548c candidate \u5b95\u673a\u5904\u7406<\/li>\n\n\n\n<li>\u65f6\u95f4\u4e0e\u53ef\u7528\u6027\u9650\u5236<\/li>\n<\/ul>\n\n\n\n<p><strong>\u2460leader \u5b95\u673a\u5904\u7406\uff1a\u9009\u4e3e\u9650\u5236<\/strong><\/p>\n\n\n\n<p>\u5982\u679c\u4e00\u4e2a follower \u843d\u540e\u4e86 leader \u82e5\u5e72\u6761\u65e5\u5fd7\uff08\u4f46\u6ca1\u6709\u6f0f\u4e00\u6574\u4e2a\u4efb\u671f\uff09\uff0c\u90a3\u4e48\u4e0b\u6b21\u9009\u4e3e\u4e2d\u6309\u7167\u9886\u5bfc\u8005\u9009\u4e3e\u91cc\u7684\u89c4\u5219\uff0c\u5b83\u4f9d\u65e7\u6709\u53ef\u80fd\u5f53\u9009 leader\u3002\u5b83\u5728\u5f53\u9009\u65b0 leader \u540e\u5c31\u6c38\u8fdc\u4e5f\u65e0\u6cd5\u8865\u4e0a\u4e4b\u524d\u7f3a\u5931\u7684\u90a3\u90e8\u5206\u65e5\u5fd7\uff0c\u4ece\u800c\u9020\u6210\u72b6\u6001\u673a\u4e4b\u95f4\u7684\u4e0d\u4e00\u81f4\u3002\u6240\u4ee5\u9700\u8981\u5bf9\u9886\u5bfc\u8005\u9009\u4e3e\u589e\u52a0\u4e00\u4e2a\u9650\u5236\uff0c\u4fdd\u8bc1\u88ab\u9009\u51fa\u6765\u7684 leader \u4e00\u5b9a\u5305\u542b\u4e86\u4e4b\u524d\u5404\u4efb\u671f\u7684\u6240\u6709\u88ab\u63d0\u4ea4\u7684\u65e5\u5fd7\u6761\u76ee\u3002<\/p>\n\n\n\n<p>RequestVote RPC \u6267\u884c\u4e86\u8fd9\u6837\u7684\u9650\u5236\uff1aRPC \u4e2d\u5305\u542b\u4e86 candidate \u7684\u65e5\u5fd7\u4fe1\u606f\uff0c\u5982\u679c\u6295\u7968\u8005\u81ea\u5df1\u7684\u65e5\u5fd7\u6bd4 candidate \u7684\u8fd8<strong>\u65b0<\/strong>\uff0c\u5b83\u4f1a\u62d2\u7edd\u6389\u8be5\u6295\u7968\u8bf7\u6c42\u3002<\/p>\n\n\n\n<p><br>Raft \u901a\u8fc7\u6bd4\u8f83\u4e24\u4efd\u65e5\u5fd7\u4e2d\u6700\u540e\u4e00\u6761\u65e5\u5fd7\u6761\u76ee\u7684\u7d22\u5f15\u503c\u548c\u4efb\u671f\u53f7\u6765\u5b9a\u4e49\u8c01\u7684\u65e5\u5fd7\u6bd4\u8f83\u65b0\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u4e24\u4efd\u65e5\u5fd7\u6700\u540e\u6761\u76ee\u7684\u4efb\u671f\u53f7\u4e0d\u540c\uff0c\u90a3\u4e48\u4efb\u671f\u53f7\u5927\u7684\u65e5\u5fd7\u66f4\u201c\u65b0\u201d\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u4e24\u4efd\u65e5\u5fd7\u6700\u540e\u6761\u76ee\u7684\u4efb\u671f\u53f7\u76f8\u540c\uff0c\u90a3\u4e48\u65e5\u5fd7\u8f83\u957f\u7684\u90a3\u4e2a\u66f4\u201c\u65b0\u201d\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image-8.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"451\" height=\"310\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image-8.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2972\"  sizes=\"auto, (max-width: 451px) 100vw, 451px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p><strong>\u2461leader \u5b95\u673a\u5904\u7406\uff1a\u65b0 leader \u662f\u5426\u63d0\u4ea4\u4e4b\u524d\u4efb\u671f\u5185\u7684\u65e5\u5fd7\u6761\u76ee<\/strong><br> \u4e00\u65e6\u5f53\u524d\u4efb\u671f\u5185\u7684\u67d0\u4e2a\u65e5\u5fd7\u6761\u76ee\u5df2\u7ecf\u5b58\u50a8\u5230\u8fc7\u534a\u7684\u670d\u52a1\u5668\u8282\u70b9\u4e0a\uff0cleader \u5c31\u77e5\u9053\u8be5\u65e5\u5fd7\u6761\u76ee\u53ef\u4ee5\u88ab\u63d0\u4ea4\u4e86\u3002<\/p>\n\n\n\n<p>follower \u7684\u63d0\u4ea4\u89e6\u53d1\uff1a\u4e0b\u4e00\u4e2a AppendEntries RPC\uff1a\u5fc3\u8df3 or \u65b0\u65e5\u5fd7\uff08\u5fc3\u8df3\u53ef\u4ee5\u770b\u6210\u662f\u7279\u6b8a\u7684 AppendEntries RPC\uff0c\u53ea\u662f\u6ca1\u6709\u65e5\u5fd7\u4f53\uff09<\/p>\n\n\n\n<p>\u53ea\u6709 leader \u5f53\u524d\u4efb\u671f\u5185\u7684\u65e5\u5fd7\u6761\u76ee\u624d\u901a\u8fc7\u8ba1\u7b97\u526f\u672c\u6570\u76ee\u7684\u65b9\u5f0f\u6765\u63d0\u4ea4\u3002<\/p>\n\n\n\n<p><br>\u4e00\u65e6\u5f53\u524d\u4efb\u671f\u7684\u67d0\u4e2a\u65e5\u5fd7\u6761\u76ee\u4ee5\u8fd9\u79cd\u65b9\u5f0f\u88ab\u63d0\u4ea4\uff0c\u90a3\u4e48\u7531\u4e8e\u65e5\u5fd7\u5339\u914d\u7279\u6027\uff0c\u4e4b\u524d\u7684\u6240\u6709\u65e5\u5fd7\u6761\u76ee\u4e5f\u90fd\u4f1a\u88ab\u95f4\u63a5\u5730\u63d0\u4ea4\u3002<\/p>\n\n\n\n<p><strong>\u2462follower \u548c candidate \u5b95\u673a\u5904\u7406<\/strong><\/p>\n\n\n\n<p>follower \u548c candidate \u5d29\u6e83\u540e\u7684\u5904\u7406\u65b9\u5f0f\u6bd4 leader \u5d29\u6e83\u8981\u7b80\u5355\u5f97\u591a\uff0c\u5e76\u4e14\u4e24\u8005\u7684\u5904\u7406\u65b9\u5f0f\u662f\u76f8\u540c\u7684\u3002<br>\u5982\u679c follower \u6216 candidate \u5d29\u6e83\u4e86\uff0c\u90a3\u4e48\u540e\u7eed\u53d1\u9001\u7ed9\u4ed6\u4eec\u7684 RequestVote \u548c AppendEntriesRPCs \u90fd\u4f1a\u5931\u8d25\u3002<br>Raft \u901a\u8fc7\u65e0\u9650\u7684\u91cd\u8bd5\u6765\u5904\u7406\u8fd9\u79cd\u5931\u8d25\uff0c\u5982\u679c\u5d29\u6e83\u7684\u673a\u5668\u91cd\u542f\u4e86\uff0c\u90a3\u4e48\u8fd9\u4e9b RPC \u5c31\u4f1a\u6210\u529f\u5b8c\u6210\u3002<br>\u5982\u679c\u4e00\u4e2a\u670d\u52a1\u5668\u5728\u5b8c\u6210\u4e86\u4e00\u4e2a RPC\uff0c\u4f46\u662f\u8fd8\u6ca1\u6709\u76f8\u5e94\u7684\u65f6\u5019\u5d29\u6e83\u4e86\uff0c\u90a3\u4e48\u5b83\u91cd\u542f\u4e4b\u540e\u5c31\u4f1a\u518d\u6b21\u6536\u5230\u540c\u6837\u7684\u8bf7\u6c42\uff08Raft \u7684 RPC \u90fd\u662f\u5e42\u7b49\u7684\uff09\u3002 <\/p>\n\n\n\n<p><strong>\u2463\u65f6\u95f4\u4e0e\u53ef\u7528\u6027\u9650\u5236<\/strong><\/p>\n\n\n\n<p>Raft \u7b97\u6cd5\u6574\u4f53\u4e0d\u4f9d\u8d56\u5ba2\u89c2\u65f6\u95f4\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u54ea\u6015\u56e0\u4e3a\u7f51\u7edc\u6216\u5176\u4ed6\u56e0\u7d20\uff0c\u9020\u6210\u540e\u53d1\u7684 RPC \u5148\u5230\uff0c\u4e5f\u4e0d\u4f1a\u5f71\u54cdRaft \u7684\u6b63\u786e\u6027\u3002 <br>\u53ea\u8981\u6574\u4e2a\u7cfb\u7edf\u6ee1\u8db3\u4e0b\u9762\u7684\u65f6\u95f4\u8981\u6c42\uff0cRaft \u5c31\u53ef\u4ee5\u9009\u4e3e\u51fa\u5e76\u7ef4\u6301\u4e00\u4e2a\u7a33\u5b9a\u7684 leader\uff1a<\/p>\n\n\n\n<p>\u5e7f\u64ad\u65f6\u95f4(broadcastTime) &lt;&lt; \u9009\u4e3e\u8d85\u65f6\u65f6\u95f4(electionTimeout) &lt;&lt; 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class=\"wp-block-heading\">\u96c6\u7fa4\u6210\u5458\u53d8\u66f4<\/h2>\n\n\n\n<p>\u5728\u9700\u8981\u6539\u53d8\u96c6\u7fa4\u914d\u7f6e\u7684\u65f6\u5019\uff08\u5982\u589e\u51cf\u8282\u70b9\u3001\u66ff\u6362\u5b95\u673a\u7684\u673a\u5668\u6216\u8005\u6539\u53d8\u590d\u5236\u7684\u7a0b\u5ea6\uff09\uff0cRaft \u53ef\u4ee5\u8fdb\u884c\u914d\u7f6e\u53d8\u66f4\u81ea\u52a8\u5316\u3002\u81ea\u52a8\u5316\u914d\u7f6e\u53d8\u66f4\u673a\u5236\u6700\u5927\u7684\u96be\u70b9\u662f\u4fdd\u8bc1\u8f6c\u6362\u8fc7\u7a0b\u4e2d\u4e0d\u4f1a\u51fa\u73b0\u540c\u4e00\u4efb\u671f\u7684\u4e24\u4e2a leader\uff0c\u56e0\u4e3a\u8f6c\u6362\u671f\u95f4\u6574\u4e2a\u96c6\u7fa4\u53ef\u80fd\u5212\u5206\u4e3a\u4e24\u4e2a\u72ec\u7acb\u7684\u5927\u591a\u6570\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2025\/04\/image-9.png'><img class=\"lazyload 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