{"id":4921,"date":"2020-12-24T14:40:26","date_gmt":"2020-12-24T06:40:26","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=4921"},"modified":"2024-01-03T19:27:15","modified_gmt":"2024-01-03T11:27:15","slug":"%e7%be%8e%e5%9b%a2%e4%b8%87%e4%ba%bf%e7%ba%a7-kv-%e5%ad%98%e5%82%a8%e6%9e%b6%e6%9e%84%e4%b8%8e%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/4921","title":{"rendered":"\u7f8e\u56e2\u4e07\u4ebf\u7ea7 KV \u5b58\u50a8\u67b6\u6784\u4e0e\u5b9e\u8df5"},"content":{"rendered":"<p><a href=\"https:\/\/my.oschina.net\/meituantech\/blog\/4333959\">\u539f\u6587\u5730\u5740<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>KV \u5b58\u50a8\u4f5c\u4e3a\u7f8e\u56e2\u4e00\u9879\u91cd\u8981\u7684\u5728\u7ebf\u5b58\u50a8\u670d\u52a1\uff0c\u627f\u8f7d\u4e86\u5728\u7ebf\u670d\u52a1\u6bcf\u5929\u4e07\u4ebf\u7ea7\u7684\u8bf7\u6c42\u91cf\u3002\u5728 2019 \u5e74 QCon 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src=\"https:\/\/p0.meituan.net\/travelcube\/780ab053842a16022c226da5a34aed84117242.png\" alt=\"\" \/><\/p>\n<p>\u8fd9\u4e2a\u65f6\u5019\uff0c\u6211\u4eec\u53d1\u73b0\u6709\u4e86\u4e00\u4e2a\u6bd4\u8f83\u6210\u719f\u7684 KV \u5b58\u50a8\u5f00\u6e90\u9879\u76ee\uff1a\u963f\u91cc Tair \u30022014\u5e74\uff0c\u6211\u4eec\u5f15\u5165\u4e86 Tair \u6765\u6ee1\u8db3\u4e1a\u52a1 KV \u5b58\u50a8\u65b9\u9762\u7684\u9700\u6c42\u3002Tair 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KV 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Redis \uff0c\u4e1a\u52a1\u4f1a\u53d1\u73b0 Redis \u7684\u6570\u636e\u7ed3\u6784\u7279\u522b\u4e30\u5bcc\uff0c\u800c Tair \u8fd8\u4e0d\u652f\u6301\u8fd9\u4e9b\u6570\u636e\u7ed3\u6784\u3002\u867d\u7136\u6211\u4eec\u7528 Tair \u89e3\u51b3\u4e86\u4e00\u4e9b\u95ee\u9898\uff0c\u4f46\u662f Tair \u4e5f\u65e0\u6cd5\u5b8c\u5168\u6ee1\u8db3\u4e1a\u52a1\u9700\u6c42\u3002\u6bd5\u7adf\uff0c\u5728\u7f8e\u56e2\u8fd9\u6837\u4e00\u4e2a\u4e1a\u52a1\u89c4\u6a21\u8f83\u5927\u548c\u4e1a\u52a1\u590d\u6742\u5ea6\u8f83\u9ad8\u7684\u573a\u666f\u4e0b\uff0c\u5f88\u96be\u6709\u5f00\u6e90\u7cfb\u7edf\u80fd\u5f88\u597d\u5730\u6ee1\u8db3\u6211\u4eec\u7684\u9700\u6c42\u3002\u6700\u7ec8\uff0c\u6211\u4eec\u51b3\u5b9a\u5728\u5df2\u5e94\u7528\u7684\u5f00\u6e90\u7cfb\u7edf\u4e4b\u4e0a\u8fdb\u884c\u81ea\u7814\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p0.meituan.net\/travelcube\/e47f39bc7c4943eb64a9cedc924945a375058.png\" alt=\"\" \/><\/p>\n<p>\u521a\u597d\u57282015 \u5e74\uff0c Redis 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\u5b58\u50a8\u7cfb\u7edf\u5728\u7f8e\u56e2\u5185\u90e8\u6bcf\u5929\u7684\u8c03\u7528\u91cf\u5747\u5df2\u7a81\u7834\u4e07\u4ebf\uff0c\u5b83\u4eec\u7684\u8bf7\u6c42\u5cf0\u503c\u4e5f\u90fd\u7a81\u7834\u4e86\u6bcf\u79d2\u4ebf\u7ea7\u3002<\/p>\n<h2>\u5185\u5b58 KV Squirrel \u67b6\u6784\u548c\u5b9e\u8df5<\/h2>\n<p>\u5728\u5f00\u59cb\u4e4b\u524d\uff0c\u672c\u6587\u5148\u4ecb\u7ecd\u4e24\u4e2a\u5b58\u50a8\u7cfb\u7edf\u5171\u901a\u7684\u5730\u65b9\u3002\u6bd4\u5982\u5206\u5e03\u5f0f\u5b58\u50a8\u7684\u7ecf\u5178\u95ee\u9898\uff1a\u6570\u636e\u662f\u5982\u4f55\u5206\u5e03\u7684\uff1f\u8fd9\u4e2a\u95ee\u9898\u5728 KV \u5b58\u50a8\u9886\u57df\uff0c\u5c31\u662f Key \u662f\u600e\u4e48\u5206\u5e03\u5230\u5b58\u50a8\u8282\u70b9\u4e0a\u7684\u3002\u8fd9\u91cc Squirrel \u8ddf Cellar \u662f\u4e00\u6837\u7684\u3002\u5f53\u6211\u4eec\u62ff\u5230\u4e00\u4e2a Key \u540e\uff0c\u7528\u56fa\u5b9a\u7684\u54c8\u5e0c\u7b97\u6cd5\u62ff\u5230\u4e00\u4e2a\u54c8\u5e0c\u503c\uff0c\u7136\u540e\u5c06\u54c8\u5e0c\u503c\u5bf9 Slot \u6570\u76ee\u53d6\u6a21\u5f97\u5230\u4e00\u4e2aSlot id\uff0c\u6211\u4eec\u4e24\u4e2a KV \u73b0\u5728\u90fd\u662f\u9884\u5206\u724716384\u4e2a Slot \u3002\u5f97\u5230 Slot id \u4e4b\u540e\uff0c\u518d\u6839\u636e\u8def\u7531\u8868\u5c31\u80fd\u67e5\u5230\u8fd9\u4e2a Slot \u5b58\u50a8\u5728\u54ea\u4e2a\u5b58\u50a8\u8282\u70b9\u4e0a\u3002\u8fd9\u4e2a\u8def\u7531\u8868\u7b80\u5355\u6765\u8bf4\u5c31\u662f\u4e00\u4e2a Slot \u5230\u5b58\u50a8\u8282\u70b9\u7684\u5bf9\u7167\u8868\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p0.meituan.net\/travelcube\/dc234294ee247355770e653152b12bbd71198.png\" alt=\"KV \u6570\u636e\u5206\u5e03\u4ecb\u7ecd\" \/><\/p>\n<p>\u63a5\u4e0b\u6765\u8bb2\u4e00\u4e0b\u5bf9\u9ad8\u53ef\u7528\u67b6\u6784\u7684\u8ba4\u77e5\uff0c\u4e2a\u4eba\u8ba4\u4e3a\u9ad8\u53ef\u7528\u53ef\u4ee5\u4ece\u5b8f\u89c2\u548c\u5fae\u89c2\u4e24\u4e2a\u89d2\u5ea6\u6765\u770b\u3002\u4ece\u5b8f\u89c2\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u9ad8\u53ef\u7528\u5c31\u662f\u6307\u5bb9\u707e\u600e\u4e48\u505a\u3002\u6bd4\u5982\u8bf4\u6302\u6389\u4e86\u4e00\u4e2a\u8282\u70b9\uff0c\u4f60\u8be5\u600e\u4e48\u505a\uff1f\u4e00\u4e2a\u673a\u623f\u6216\u8005\u8bf4\u67d0\u4e2a\u5730\u57df\u7684\u4e00\u6279\u673a\u623f\u5b95\u673a\u4e86\uff0c\u4f60\u8be5\u600e\u4e48\u505a\uff1f\u800c\u4ece\u5fae\u89c2\u7684\u89d2\u5ea6\u770b\uff0c\u9ad8\u53ef\u7528\u5c31\u662f\u600e\u4e48\u80fd\u4fdd\u8bc1\u7aef\u5230\u7aef\u7684\u9ad8\u6210\u529f\u7387\u3002\u6211\u4eec\u5728\u505a\u4e00\u4e9b\u8fd0\u7ef4\u5347\u7ea7\u6216\u8005\u6269\u7f29\u5bb9\u6570\u636e\u8fc1\u79fb\u7684\u65f6\u5019\uff0c\u80fd\u5426\u505a\u5230\u4e1a\u52a1\u8bf7\u6c42\u7684\u9ad8\u53ef\u7528\uff1f \u672c\u6587\u4e5f\u4f1a\u4ece\u5b8f\u89c2\u548c\u5fae\u89c2\u4e24\u4e2a\u89d2\u5ea6\u6765\u5206\u4eab\u7f8e\u56e2\u505a\u7684\u4e00\u4e9b\u9ad8\u53ef\u7528\u5de5\u4f5c\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p0.meituan.net\/travelcube\/73d1e6275d385a0e973e378b69189ba5165460.png\" alt=\"Squirrel \u67b6\u6784\" \/><\/p>\n<p>\u4e0a\u56fe\u5c31\u662f\u6211\u4eec\u7684 Squirrel \u67b6\u6784\u3002\u4e2d\u95f4\u90e8\u5206\u8ddf Redis \u5b98\u65b9\u96c6\u7fa4\u662f\u4e00\u81f4\u7684\u3002\u5b83\u6709\u4e3b\u4ece\u7684\u7ed3\u6784\uff0c Redis \u5b9e\u4f8b\u4e4b\u95f4\u901a\u8fc7 Gossip \u534f\u8bae\u53bb\u901a\u4fe1\u3002\u6211\u4eec\u5728\u53f3\u8fb9\u6dfb\u52a0\u4e86\u4e00\u4e2a\u96c6\u7fa4\u8c03\u5ea6\u5e73\u53f0\uff0c\u5305\u542b\u8c03\u5ea6\u670d\u52a1\u3001\u6269\u7f29\u5bb9\u670d\u52a1\u548c\u9ad8\u53ef\u7528\u670d\u52a1\u7b49\uff0c\u5b83\u4f1a\u53bb\u7ba1\u7406\u6574\u4e2a\u96c6\u7fa4\uff0c\u628a\u7ba1\u7406\u7ed3\u679c\u4f5c\u4e3a\u5143\u6570\u636e\u66f4\u65b0\u5230 ZooKeeper\u3002\u6211\u4eec\u7684\u5ba2\u6237\u7aef\u4f1a\u8ba2\u9605 ZooKeeper \u4e0a\u7684\u5143\u6570\u636e\u53d8\u66f4\uff0c\u5b9e\u65f6\u83b7\u53d6\u5230\u96c6\u7fa4\u7684\u62d3\u6251\u72b6\u6001\uff0c\u76f4\u63a5\u5728 Redis \u96c6\u7fa4\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u3002<\/p>\n<h3>Squirrel \u8282\u70b9\u5bb9\u707e<\/h3>\n<p>\u7136\u540e\u518d\u770b\u4e00\u4e0b Squirrel \u5bb9\u707e\u600e\u4e48\u505a\u3002\u5bf9\u4e8e Redis \u96c6\u7fa4\u800c\u8a00\uff0c\u8282\u70b9\u5b95\u673a\u5df2\u7ecf\u6709\u5b8c\u5907\u7684\u5904\u7406\u673a\u5236\u4e86\u3002\u5b98\u65b9\u63d0\u4f9b\u7684\u65b9\u6848\uff0c\u4efb\u4f55\u4e00\u4e2a\u8282\u70b9\u4ece\u5b95\u673a\u5230\u88ab\u6807\u8bb0\u4e3a FAIL \u6458\u9664\uff0c\u4e00\u822c\u9700\u8981\u7ecf\u8fc7 30 \u79d2\u3002\u4e3b\u5e93\u7684\u6458\u9664\u53ef\u80fd\u4f1a\u5f71\u54cd\u6570\u636e\u7684\u5b8c\u6574\u6027\uff0c\u6240\u4ee5\uff0c\u6211\u4eec\u9700\u8981\u8c28\u614e\u4e00\u4e9b\u3002\u4f46\u662f\u5bf9\u4e8e\u4ece\u5e93\u5462\uff1f\u6211\u4eec\u8ba4\u4e3a\u8fd9\u4e2a\u8fc7\u7a0b\u5b8c\u5168\u6ca1\u5fc5\u8981\u3002\u53e6\u4e00\u70b9\uff0c\u6211\u4eec\u90fd\u77e5\u9053\u5185\u5b58\u7684 KV \u5b58\u50a8\u6570\u636e\u91cf\u4e00\u822c\u90fd\u6bd4\u8f83\u5c0f\u3002\u5bf9\u4e8e\u4e1a\u52a1\u91cf\u5f88\u5927\u7684\u516c\u53f8\u6765\u8bf4\uff0c\u5b83\u5f80\u5f80\u4f1a\u6709\u5f88\u591a\u7684\u96c6\u7fa4\u3002\u5982\u679c\u53d1\u751f\u4ea4\u6362\u673a\u6545\u969c\uff0c\u4f1a\u5f71\u54cd\u5230\u5f88\u591a\u7684\u96c6\u7fa4\uff0c\u5b95\u673a\u4e4b\u540e\u53bb\u8865\u526f\u672c\u5c31\u4f1a\u53d8\u5f97\u975e\u5e38\u9ebb\u70e6\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e24\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u505a\u4e86 HA \u9ad8\u53ef\u7528\u670d\u52a1\u3002<\/p>\n<p>\u5b83\u7684\u67b6\u6784\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u5b83\u4f1a\u5b9e\u65f6\u76d1\u63a7\u96c6\u7fa4\u7684\u6240\u6709\u8282\u70b9\u3002\u4e0d\u7ba1\u662f\u7f51\u7edc\u6296\u52a8\uff0c\u8fd8\u662f\u53d1\u751f\u4e86\u5b95\u673a\uff08\u6bd4\u5982\u8bf4 Redis 2 \uff09\uff0c\u5b83\u53ef\u4ee5\u5b9e\u65f6\u66f4\u65b0 ZooKeeper \uff0c\u544a\u8bc9 ZooKeeper \u53bb\u6458\u9664 Redis 2 \uff0c\u5ba2\u6237\u7aef\u6536\u5230\u6d88\u606f\u540e\uff0c\u8bfb\u6d41\u91cf\u5c31\u76f4\u63a5\u8def\u7531\u5230 Redis 3\u4e0a\u3002\u5982\u679c Redis 2 \u53ea\u662f\u51e0\u5341\u79d2\u7684\u7f51\u7edc\u6296\u52a8\uff0c\u8fc7\u51e0\u5341\u79d2\u4e4b\u540e\uff0c\u5982\u679c HA \u8282\u70b9\u76d1\u63a7\u5230\u5b83\u6062\u590d\u540e\uff0c\u4f1a\u628a\u5b83\u91cd\u65b0\u52a0\u56de\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p1.meituan.net\/travelcube\/32b1f9a1890333c8f7e4cd113ca07a45116238.png\" alt=\"Squirrel\u2014\u8282\u70b9\u5bb9\u707e\" \/><\/p>\n<p>\u5982\u679c\u8fc7\u4e86\u4e00\u6bb5\u65f6\u95f4\uff0cHA \u5224\u65ad\u5b83\u5c5e\u4e8e\u4e00\u4e2a\u6c38\u4e45\u6027\u7684\u5b95\u673a\uff0cHA \u8282\u70b9\u4f1a\u76f4\u63a5\u4ece Kubernetes \u96c6\u7fa4\u7533\u8bf7\u4e00\u4e2a\u65b0\u7684 Redis 4 \u5bb9\u5668\u5b9e\u4f8b\uff0c\u628a\u5b83\u52a0\u5230\u96c6\u7fa4\u91cc\u3002\u6b64\u65f6\uff0c\u62d3\u6251\u7ed3\u6784\u53c8\u53d8\u6210\u4e86\u4e00\u4e3b\u4e24\u4ece\u7684\u6807\u51c6\u7ed3\u6784\uff0cHA \u8282\u70b9\u66f4\u65b0\u5b8c\u96c6\u7fa4\u62d3\u6251\u4e4b\u540e\uff0c\u5c31\u4f1a\u53bb\u5199 ZooKeeper \u901a\u77e5\u5ba2\u6237\u7aef\u53bb\u66f4\u65b0\u8def\u7531\uff0c\u5ba2\u6237\u7aef\u5c31\u80fd\u5230 Redis 4 \u8fd9\u4e2a\u65b0\u4ece\u5e93\u4e0a\u8fdb\u884c\u8bfb\u64cd\u4f5c\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p0.meituan.net\/travelcube\/387a96ef1794acee62eaf78d71f072eb143257.png\" alt=\"\" \/><\/p>\n<p>\u901a\u8fc7\u4e0a\u8ff0\u65b9\u6848\uff0c\u6211\u4eec\u628a\u4ece\u5e93\u7684\u6458\u9664\u65f6\u95f4\u4ece 30 \u79d2\u964d\u4f4e\u5230\u4e86 5 \u79d2\u3002\u53e6\u5916\uff0c\u6211\u4eec\u901a\u8fc7 HA \u81ea\u52a8\u7533\u8bf7\u5bb9\u5668\u5b9e\u4f8b\u52a0\u5165\u96c6\u7fa4\u7684\u65b9\u5f0f\uff0c\u628a\u5b95\u673a\u8865\u526f\u672c\u53d8\u6210\u4e86\u4e00\u4e2a\u5206\u949f\u7ea7\u7684\u81ea\u52a8\u64cd\u4f5c\uff0c\u4e0d\u9700\u8981\u4efb\u4f55\u4eba\u5de5\u7684\u4ecb\u5165\u3002<\/p>\n<h3>Squirrel \u8de8\u5730\u57df\u5bb9\u707e<\/h3>\n<p>\u6211\u4eec\u89e3\u51b3\u4e86\u5355\u8282\u70b9\u5b95\u673a\u7684\u95ee\u9898\uff0c\u90a3\u4e48\u8de8\u5730\u57df\u95ee\u9898\u5982\u4f55\u89e3\u51b3\u5462\uff1f\u6211\u4eec\u9996\u5148\u6765\u770b\u4e0b\u8de8\u5730\u57df\u6709\u4ec0\u4e48\u4e0d\u540c\u3002\u7b2c\u4e00\uff0c\u76f8\u5bf9\u4e8e\u540c\u5730\u57df\u673a\u623f\u95f4\u7684\u7f51\u7edc\u800c\u8a00\uff0c\u8de8\u5730\u57df\u4e13\u7ebf\u5f88\u4e0d\u7a33\u5b9a\uff1b\u7b2c\u4e8c\uff0c\u8de8\u5730\u57df\u4e13\u7ebf\u7684\u5e26\u5bbd\u662f\u975e\u5e38\u6709\u9650\u4e14\u6602\u8d35\u7684\u3002\u800c\u96c6\u7fa4\u5185\u7684\u590d\u5236\u6ca1\u6709\u8003\u8651\u6781\u7aef\u7684\u7f51\u7edc\u73af\u5883\u3002\u5047\u5982\u6211\u4eec\u628a\u4e3b\u5e93\u90e8\u7f72\u5230\u5317\u4eac\uff0c\u4e24\u4e2a\u4ece\u5e93\u90e8\u7f72\u5728\u4e0a\u6d77\uff0c\u540c\u6837\u4e00\u4efd\u6570\u636e\u8981\u5728\u5317\u4e0a\u4e13\u7ebf\u4f20\u8f93\u4e24\u6b21\uff0c\u8fd9\u6837\u4f1a\u9020\u6210\u5de8\u5927\u7684\u4e13\u7ebf\u5e26\u5bbd\u6d6a\u8d39\u3002\u53e6\u5916\uff0c\u968f\u7740\u4e1a\u52a1\u7684\u53d1\u5c55\u548c\u6f14\u8fdb\uff0c\u6211\u4eec\u4e5f\u5728\u505a\u5355\u5143\u5316\u90e8\u7f72\u548c\u5f02\u5730\u591a\u6d3b\u67b6\u6784\u3002\u7528\u5b98\u65b9\u7684\u4e3b\u4ece\u540c\u6b65\uff0c\u6ee1\u8db3\u4e0d\u4e86\u6211\u4eec\u7684\u8fd9\u4e9b\u9700\u6c42\u3002\u57fa\u4e8e\u6b64\uff0c\u6211\u4eec\u53c8\u505a\u4e86\u96c6\u7fa4\u95f4\u7684\u590d\u5236\u65b9\u6848\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p0.meituan.net\/travelcube\/827c38fb9584e2425fac9c9947cf9518130125.png\" alt=\"\" \/><\/p>\n<p>\u5982\u4e0a\u56fe\u6240\u793a\uff0c\u8fd9\u91cc\u753b\u51fa\u4e86\u5317\u4eac\u7684\u4e3b\u96c6\u7fa4\u4ee5\u53ca\u4e0a\u6d77\u7684\u4ece\u96c6\u7fa4\uff0c\u6211\u4eec\u8981\u505a\u7684\u662f\u901a\u8fc7\u96c6\u7fa4\u540c\u6b65\u670d\u52a1\uff0c\u628a\u5317\u4eac\u4e3b\u96c6\u7fa4\u7684\u6570\u636e\u540c\u6b65\u5230\u4e0a\u6d77\u4ece\u96c6\u7fa4\u4e0a\u3002\u6309\u7167\u6d41\u7a0b\uff0c\u9996\u5148\u8981\u5411\u6211\u4eec\u7684\u540c\u6b65\u8c03\u5ea6\u6a21\u5757\u4e0b\u53d1\u201c\u5728\u4e24\u4e2a\u96c6\u7fa4\u95f4\u5efa\u7acb\u540c\u6b65\u94fe\u8def\u201d\u7684\u4efb\u52a1\uff0c\u540c\u6b65\u8c03\u5ea6\u6a21\u5757\u4f1a\u6839\u636e\u4e3b\u4ece\u96c6\u7fa4\u7684\u62d3\u6251\u7ed3\u6784\uff0c\u628a\u4e3b\u4ece\u96c6\u7fa4\u95f4\u7684\u540c\u6b65\u4efb\u52a1\u4e0b\u53d1\u5230\u540c\u6b65\u96c6\u7fa4\uff0c\u540c\u6b65\u96c6\u7fa4\u6536\u5230\u540c\u6b65\u4efb\u52a1\u540e\u4f1a\u626e\u6210 Redis \u7684 Slave\uff0c\u901a\u8fc7 Redis \u7684\u590d\u5236\u534f\u8bae\uff0c\u4ece\u4e3b\u96c6\u7fa4\u4e0a\u7684\u4ece\u5e93\u62c9\u53d6\u6570\u636e\uff0c\u5305\u62ec RDB\u4ee5\u53ca\u540e\u7eed\u7684\u589e\u91cf\u53d8\u66f4\u3002\u540c\u6b65\u673a\u6536\u5230\u6570\u636e\u540e\u4f1a\u628a\u5b83\u8f6c\u6210\u5ba2\u6237\u7aef\u7684\u5199\u547d\u4ee4\uff0c\u5199\u5230\u4e0a\u6d77\u4ece\u96c6\u7fa4\u7684\u4e3b\u8282\u70b9\u91cc\u3002\u901a\u8fc7\u8fd9\u6837\u7684\u65b9\u5f0f\uff0c\u6211\u4eec\u628a\u5317\u4eac\u4e3b\u96c6\u7fa4\u7684\u6570\u636e\u540c\u6b65\u5230\u4e86\u4e0a\u6d77\u7684\u4ece\u96c6\u7fa4\u3002\u540c\u6837\u7684\uff0c\u6211\u4eec\u8981\u505a\u5f02\u5730\u591a\u6d3b\u4e5f\u5f88\u7b80\u5355\uff0c\u518d\u52a0\u4e00\u4e2a\u53cd\u5411\u7684\u540c\u6b65\u94fe\u8def\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u96c6\u7fa4\u95f4\u7684\u53cc\u5411\u540c\u6b65\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\u6211\u4eec\u8bb2\u4e00\u4e0b\u5982\u4f55\u505a\u597d\u5fae\u89c2\u89d2\u5ea6\u7684\u9ad8\u53ef\u7528\uff0c\u4e5f\u5c31\u662f\u4fdd\u6301\u7aef\u5230\u7aef\u7684\u9ad8\u6210\u529f\u7387\u3002\u5bf9\u4e8e Squirrel \uff0c\u4e3b\u8981\u8bb2\u5982\u4e0b\u4e09\u4e2a\u5f71\u54cd\u6210\u529f\u7387\u7684\u95ee\u9898\uff1a<\/p>\n<ul>\n<li>\u6570\u636e\u8fc1\u79fb\u9020\u6210\u8d85\u65f6\u6296\u52a8\u3002<\/li>\n<li>\u6301\u4e45\u5316\u9020\u6210\u8d85\u65f6\u6296\u52a8\u3002<\/li>\n<li>\u70ed\u70b9 Key \u8bf7\u6c42\u5bfc\u81f4\u5355\u8282\u70b9\u8fc7\u8f7d\u3002<\/li>\n<\/ul>\n<h3>Squirrel \u667a\u80fd\u8fc1\u79fb<\/h3>\n<p>\u5bf9\u4e8e\u6570\u636e\u8fc1\u79fb\uff0c\u6211\u4eec\u4e3b\u8981\u9047\u5230\u4e09\u4e2a\u95ee\u9898\uff1a<\/p>\n<ul>\n<li>Redis Cluster \u867d\u7136\u63d0\u4f9b\u4e86\u6570\u636e\u8fc1\u79fb\u80fd\u529b\uff0c\u4f46\u662f\u5bf9\u4e8e\u8981\u8fc1\u54ea\u4e9b Slot\uff0cSlot \u4ece\u54ea\u8fc1\u5230\u54ea\uff0c\u5b83\u5e76\u4e0d\u7ba1\u3002<\/li>\n<li>\u505a\u6570\u636e\u8fc1\u79fb\u7684\u65f6\u5019\uff0c\u5927\u5bb6\u90fd\u60f3\u8d8a\u5feb\u8d8a\u597d\uff0c\u4f46\u662f\u8fc1\u79fb\u901f\u5ea6\u8fc7\u5feb\u53c8\u53ef\u80fd\u5f71\u54cd\u4e1a\u52a1\u6b63\u5e38\u8bf7\u6c42\u3002<\/li>\n<li>Redis \u7684 Migrate \u547d\u4ee4\u4f1a\u963b\u585e\u5de5\u4f5c\u7ebf\u7a0b\uff0c\u5c24\u5176\u5728\u8fc1\u79fb\u5927 Value \u7684\u65f6\u5019\u4f1a\u963b\u585e\u7279\u522b\u4e45\u3002<\/li>\n<\/ul>\n<p>\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\uff0c\u6211\u4eec\u505a\u4e86\u5168\u65b0\u7684\u8fc1\u79fb\u670d\u52a1\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p1.meituan.net\/travelcube\/2067aade591ae9e84e1facb304aeccb1150254.png\" alt=\"\" \/><\/p>\n<p>\u4e0b\u9762\u6211\u4eec\u6309\u7167\u5de5\u4f5c\u6d41\uff0c\u8bb2\u4e00\u4e0b\u5b83\u662f\u5982\u4f55\u8fd0\u884c\u7684\u3002\u9996\u5148\u751f\u6210\u8fc1\u79fb\u4efb\u52a1\uff0c\u8fd9\u6b65\u7684\u6838\u5fc3\u662f\u201c\u5c31\u8fd1\u539f\u5219\u201d\uff0c\u6bd4\u5982\u8bf4\u540c\u673a\u623f\u7684\u4e24\u4e2a\u8282\u70b9\u505a\u8fc1\u79fb\u80af\u5b9a\u6bd4\u8de8\u673a\u623f\u7684\u4e24\u4e2a\u8282\u70b9\u5feb\u3002\u8fc1\u79fb\u4efb\u52a1\u751f\u6210\u4e4b\u540e\uff0c\u4f1a\u628a\u4efb\u52a1\u4e0b\u53d1\u5230\u4e00\u6279\u8fc1\u79fb\u673a\u4e0a\u3002\u8fc1\u79fb\u673a\u8fc1\u79fb\u7684\u65f6\u5019\uff0c\u6709\u8fd9\u6837\u51e0\u4e2a\u7279\u70b9\uff1a<\/p>\n<ul>\n<li>\u7b2c\u4e00\uff0c\u4f1a\u5728\u96c6\u7fa4\u5185\u8fc1\u51fa\u8282\u70b9\u95f4\u505a\u5e76\u53d1\uff0c\u6bd4\u5982\u540c\u65f6\u7ed9 Redis 1\u3001Redis 3 \u4e0b\u53d1\u8fc1\u79fb\u547d\u4ee4\u3002<\/li>\n<li>\u7b2c\u4e8c\uff0c\u6bcf\u4e2a Migrate \u547d\u4ee4\u4f1a\u8fc1\u79fb\u4e00\u6279 Key\u3002<\/li>\n<li>\u7b2c\u4e09\uff0c\u6211\u4eec\u4f1a\u7528\u76d1\u63a7\u670d\u52a1\u53bb\u5b9e\u65f6\u91c7\u96c6\u5ba2\u6237\u7aef\u7684\u6210\u529f\u7387\u3001\u8017\u65f6\uff0c\u670d\u52a1\u7aef\u7684\u8d1f\u8f7d\u3001QPS \u7b49\uff0c\u4e4b\u540e\u628a\u8fd9\u4e2a\u72b6\u6001\u53cd\u9988\u5230\u8fc1\u79fb\u673a\u4e0a\u3002\u8fc1\u79fb\u6570\u636e\u7684\u8fc7\u7a0b\u5c31\u7c7b\u4f3c TCP \u6162\u542f\u52a8\u7684\u8fc7\u7a0b\uff0c\u5b83\u4f1a\u628a\u901f\u5ea6\u4e00\u76f4\u5f80\u4e0a\u52a0\uff0c\u82e5\u51fa\u73b0\u8bf7\u6c42\u6210\u529f\u7387\u4e0b\u964d\u7b49\u60c5\u51b5\uff0c\u5b83\u7684\u901f\u5ea6\u5c31\u4f1a\u964d\u4f4e\uff0c\u6700\u7ec8\u8fc1\u79fb\u901f\u5ea6\u4f1a\u5728\u52a8\u6001\u5e73\u8861\u4e2d\u7a33\u5b9a\u4e0b\u6765\uff0c\u8fd9\u6837\u5c31\u8fbe\u5230\u4e86\u6700\u5feb\u901f\u7684\u8fc1\u79fb\uff0c\u540c\u65f6\u53c8\u5c3d\u53ef\u80fd\u5c0f\u5730\u5f71\u54cd\u4e1a\u52a1\u7684\u6b63\u5e38\u8bf7\u6c42\u3002<\/li>\n<\/ul>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u770b\u4e00\u4e0b\u5927 Value \u7684\u8fc1\u79fb\uff0c\u6211\u4eec\u5b9e\u73b0\u4e86\u4e00\u4e2a\u5f02\u6b65 Migrate \u547d\u4ee4\uff0c\u8be5\u547d\u4ee4\u6267\u884c\u65f6\uff0cRedis \u7684\u4e3b\u7ebf\u7a0b\u4f1a\u7ee7\u7eed\u5904\u7406\u5176\u4ed6\u7684\u6b63\u5e38\u8bf7\u6c42\u3002\u5982\u679c\u6b64\u65f6\u6709\u5bf9\u6b63\u5728\u8fc1\u79fb Key \u7684\u5199\u8bf7\u6c42\u8fc7\u6765\uff0cRedis \u4f1a\u76f4\u63a5\u8fd4\u56de\u9519\u8bef\u3002\u8fd9\u6837\u6700\u5927\u9650\u5ea6\u4fdd\u8bc1\u4e86\u4e1a\u52a1\u8bf7\u6c42\u7684\u6b63\u5e38\u5904\u7406\uff0c\u540c\u65f6\u53c8\u4e0d\u4f1a\u963b\u585e\u4e3b\u7ebf\u7a0b\u3002<\/p>\n<h3>Squirrel \u6301\u4e45\u5316\u91cd\u6784<\/h3>\n<p>Redis \u4e3b\u4ece\u540c\u6b65\u65f6\u4f1a\u751f\u6210 RDB\u3002\u751f\u6210 RDB \u7684\u8fc7\u7a0b\u4f1a\u8c03\u7528 Fork \u4ea7\u751f\u4e00\u4e2a\u5b50\u8fdb\u7a0b\u53bb\u5199\u6570\u636e\u5230\u786c\u76d8\uff0cFork \u867d\u7136\u6709\u64cd\u4f5c\u7cfb\u7edf\u7684 COW \u673a\u5236\uff0c\u4f46\u662f\u5f53\u5185\u5b58\u7528\u91cf\u8fbe\u5230 10 G \u6216 20 G \u65f6\uff0c\u4f9d\u7136\u4f1a\u9020\u6210\u6574\u4e2a\u8fdb\u7a0b\u63a5\u8fd1\u79d2\u7ea7\u7684\u963b\u585e\u3002\u8fd9\u5bf9\u5728\u7ebf\u4e1a\u52a1\u6765\u8bf4\u51e0\u4e4e\u662f\u65e0\u6cd5\u63a5\u53d7\u7684\u3002\u6211\u4eec\u4e5f\u4f1a\u4e3a\u6570\u636e\u53ef\u9760\u6027\u8981\u6c42\u9ad8\u7684\u4e1a\u52a1\u53bb\u5f00\u542f AOF\uff0c\u800c\u5f00 AOF \u5c31\u53ef\u80fd\u56e0 IO \u6296\u52a8\u9020\u6210\u8fdb\u7a0b\u963b\u585e\uff0c\u8fd9\u4e5f\u4f1a\u5f71\u54cd\u8bf7\u6c42\u6210\u529f\u7387\u3002\u5bf9\u5b98\u65b9\u6301\u4e45\u5316\u673a\u5236\u7684\u8fd9\u4e24\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u7684\u89e3\u51b3\u65b9\u6848\u662f\u91cd\u6784\u6301\u4e45\u5316\u673a\u5236\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p0.meituan.net\/travelcube\/0537f1f99d1a38ace4799fb1fd465407112455.png\" alt=\"\" \/><\/p>\n<p>\u4e0a\u56fe\u662f\u6211\u4eec\u6700\u65b0\u7248\u7684 Redis \u6301\u4e45\u5316\u673a\u5236\uff0c\u5199\u8bf7\u6c42\u4f1a\u5148\u5199\u5230 DB \u91cc\uff0c\u7136\u540e\u5199\u5230\u5185\u5b58 Backlog\uff0c\u8fd9\u8ddf\u5b98\u65b9\u662f\u4e00\u6837\u7684\u3002\u540c\u65f6\u5b83\u4f1a\u628a\u8bf7\u6c42\u53d1\u7ed9\u5f02\u6b65\u7ebf\u7a0b\uff0c\u5f02\u6b65\u7ebf\u7a0b\u8d1f\u8d23\u628a\u53d8\u66f4\u5237\u5230\u786c\u76d8\u7684 Backlog \u91cc\u3002\u5f53\u786c\u76d8 Backlog \u8fc7\u591a\u65f6\uff0c\u6211\u4eec\u4f1a\u4e3b\u52a8\u5728\u4e1a\u52a1\u4f4e\u5cf0\u671f\u505a\u4e00\u6b21 RDB \uff0c\u7136\u540e\u628a RDB \u4e4b\u524d\u751f\u6210\u7684 Backlog \u5220\u9664\u3002<\/p>\n<p>\u5982\u679c\u8fd9\u65f6\u5019\u6211\u4eec\u8981\u505a\u4e3b\u4ece\u540c\u6b65\uff0c\u53bb\u5bfb\u627e\u540c\u6b65\u70b9\u7684\u65f6\u5019\uff0c\u8be5\u600e\u4e48\u529e\uff1f\u7b2c\u4e00\u6b65\u8fd8\u662f\u8ddf\u5b98\u65b9\u4e00\u6837\uff0c\u6211\u4eec\u4f1a\u4ece\u5185\u5b58 Backlog \u91cc\u627e\u6709\u6ca1\u6709\u8981\u6c42\u7684\u540c\u6b65\u70b9\uff0c\u5982\u679c\u6ca1\u6709\uff0c\u6211\u4eec\u4f1a\u53bb\u786c\u76d8 Backlog \u627e\u540c\u6b65\u70b9\u3002\u7531\u4e8e\u786c\u76d8\u7a7a\u95f4\u5f88\u5927\uff0c\u786c\u76d8 Backlog \u53ef\u4ee5\u5b58\u50a8\u7279\u522b\u591a\u7684\u6570\u636e\uff0c\u6240\u4ee5\u5f88\u5c11\u4f1a\u51fa\u73b0\u627e\u4e0d\u5230\u540c\u6b65\u70b9\u7684\u60c5\u51b5\u3002\u5982\u679c\u786c\u76d8 Backlog \u4e5f\u6ca1\u6709\uff0c\u6211\u4eec\u5c31\u4f1a\u89e6\u53d1\u4e00\u6b21\u7c7b\u4f3c\u4e8e\u5168\u91cf\u91cd\u4f20\u7684\u64cd\u4f5c\uff0c\u4f46\u8fd9\u91cc\u7684\u5168\u91cf\u91cd\u4f20\u662f\u4e0d\u9700\u8981\u5f53\u573a\u751f\u6210 RDB \u7684\uff0c\u5b83\u53ef\u4ee5\u76f4\u63a5\u7528\u786c\u76d8\u5df2\u5b58\u7684 RDB \u53ca\u5176\u4e4b\u540e\u7684\u786c\u76d8 Backlog \u5b8c\u6210\u5168\u91cf\u91cd\u4f20\u3002\u901a\u8fc7\u8fd9\u4e2a\u8bbe\u8ba1\uff0c\u6211\u4eec\u51cf\u5c11\u4e86\u5f88\u591a\u7684\u5168\u91cf\u91cd\u4f20\u3002\u53e6\u5916\uff0c\u6211\u4eec\u901a\u8fc7\u63a7\u5236\u5728\u4f4e\u5cf0\u533a\u751f\u6210 RDB \uff0c\u51cf\u5c11\u4e86\u5f88\u591a RDB \u9020\u6210\u7684\u6296\u52a8\u3002\u540c\u65f6\uff0c\u6211\u4eec\u4e5f\u907f\u514d\u4e86\u5199 AOF \u9020\u6210\u7684\u6296\u52a8\u3002\u4e0d\u8fc7\uff0c\u8fd9\u4e2a\u65b9\u6848\u56e0\u4e3a\u5199 AOF \u662f\u5b8c\u5168\u5f02\u6b65\u7684\uff0c\u6240\u4ee5\u4f1a\u6bd4\u5b98\u65b9\u7684\u6570\u636e\u53ef\u9760\u6027\u5dee\u4e00\u4e9b\uff0c\u4f46\u6211\u4eec\u8ba4\u4e3a\u8fd9\u4e2a\u4ee3\u4ef7\u6362\u6765\u4e86\u53ef\u7528\u6027\u7684\u63d0\u5347\uff0c\u8fd9\u662f\u975e\u5e38\u503c\u5f97\u7684\u3002<\/p>\n<h3>Squirrel \u70ed\u70b9 Key<\/h3>\n<p>\u4e0b\u9762\u770b\u4e00\u4e0b Squirrel \u7684\u70ed\u70b9 Key \u89e3\u51b3\u65b9\u6848\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u666e\u901a\u4e3b\u3001\u4ece\u662f\u4e00\u4e2a\u6b63\u5e38\u96c6\u7fa4\u4e2d\u7684\u8282\u70b9\uff0c\u70ed\u70b9\u4e3b\u3001\u4ece\u662f\u6e38\u79bb\u4e8e\u6b63\u5e38\u96c6\u7fa4\u4e4b\u5916\u7684\u8282\u70b9\u3002\u6211\u4eec\u770b\u4e00\u4e0b\u5b83\u4eec\u4e4b\u95f4\u600e\u4e48\u53d1\u751f\u8054\u7cfb\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p0.meituan.net\/travelcube\/e7b7fb502943e1ca4d0cd701a5d419be124032.png\" alt=\"\" \/><\/p>\n<p>\u5f53\u6709\u8bf7\u6c42\u8fdb\u6765\u8bfb\u5199\u666e\u901a\u8282\u70b9\u65f6\uff0c\u8282\u70b9\u5185\u4f1a\u540c\u65f6\u505a\u8bf7\u6c42 Key \u7684\u7edf\u8ba1\u3002\u5982\u679c\u67d0\u4e2a Key \u8fbe\u5230\u4e86\u4e00\u5b9a\u7684\u8bbf\u95ee\u91cf\u6216\u8005\u5e26\u5bbd\u7684\u5360\u7528\u91cf\uff0c\u4f1a\u81ea\u52a8\u89e6\u53d1\u6d41\u63a7\u4ee5\u9650\u5236\u70ed\u70b9 Key \u8bbf\u95ee\uff0c\u9632\u6b62\u8282\u70b9\u88ab\u70ed\u70b9\u8bf7\u6c42\u6253\u6ee1\u3002\u540c\u65f6\uff0c\u76d1\u63a7\u670d\u52a1\u4f1a\u5468\u671f\u6027\u7684\u53bb\u6240\u6709 Redis \u5b9e\u4f8b\u4e0a\u67e5\u8be2\u7edf\u8ba1\u5230\u7684\u70ed\u70b9 Key\u3002\u5982\u679c\u6709\u70ed\u70b9\uff0c\u76d1\u63a7\u670d\u52a1\u4f1a\u628a\u70ed\u70b9 Key \u6240\u5728 Slot \u4e0a\u62a5\u5230\u6211\u4eec\u7684\u8fc1\u79fb\u670d\u52a1\u3002\u8fc1\u79fb\u670d\u52a1\u8fd9\u65f6\u4f1a\u628a\u70ed\u70b9\u4e3b\u4ece\u8282\u70b9\u52a0\u5165\u5230\u8fd9\u4e2a\u96c6\u7fa4\u4e2d\uff0c\u7136\u540e\u628a\u70ed\u70b9 Slot \u8fc1\u79fb\u5230\u8fd9\u4e2a\u70ed\u70b9\u4e3b\u4ece\u4e0a\u3002\u56e0\u4e3a\u70ed\u70b9\u4e3b\u4ece\u4e0a\u53ea\u6709\u70ed\u70b9 Slot \u7684\u8bf7\u6c42\uff0c\u6240\u4ee5\u70ed\u70b9 Key\u7684\u5904\u7406\u80fd\u529b\u5f97\u5230\u4e86\u5927\u5e45\u63d0\u5347\u3002\u901a\u8fc7\u8fd9\u6837\u7684\u8bbe\u8ba1\uff0c\u6211\u4eec\u53ef\u4ee5\u505a\u5230\u5b9e\u65f6\u7684\u70ed\u70b9\u76d1\u63a7\uff0c\u5e76\u53ca\u65f6\u901a\u8fc7\u6d41\u63a7\u53bb\u6b62\u635f\uff1b\u901a\u8fc7\u70ed\u70b9\u8fc1\u79fb\uff0c\u6211\u4eec\u80fd\u505a\u5230\u81ea\u52a8\u7684\u70ed\u70b9\u9694\u79bb\u548c\u5feb\u901f\u7684\u5bb9\u91cf\u6269\u5145\u3002<\/p>\n<h2>\u6301\u4e45\u5316 KV Cellar \u67b6\u6784\u548c\u5b9e\u8df5<\/h2>\n<p>\u4e0b\u9762\u770b\u4e00\u4e0b\u6301\u4e45\u5316 KV Cellar \u7684\u67b6\u6784\u548c\u5b9e\u8df5\u3002\u4e0b\u56fe\u662f\u6211\u4eec\u6700\u65b0\u7684 Cellar \u67b6\u6784\u56fe\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p0.meituan.net\/travelcube\/7622fcd2f731d940efdebf99f60da3e9107829.png\" alt=\"\" \/><\/p>\n<p>\u8ddf\u963f\u91cc\u5f00\u6e90\u7684 Tair \u4e3b\u8981\u6709\u4e24\u4e2a\u67b6\u6784\u4e0a\u7684\u4e0d\u540c\u3002\u7b2c\u4e00\u4e2a\u662fOB\uff0c\u7b2c\u4e8c\u4e2a\u662f ZooKeeper\u3002\u6211\u4eec\u7684 OB \u8ddf ZooKeeper \u7684 Observer \u662f\u7c7b\u4f3c\u7684\u4f5c\u7528\uff0c\u63d0\u4f9b Cellar \u4e2d\u5fc3\u8282\u70b9\u5143\u6570\u636e\u7684\u67e5\u8be2\u670d\u52a1\u3002\u5b83\u53ef\u4ee5\u5b9e\u65f6\u4e0e\u4e2d\u5fc3\u8282\u70b9\u7684 Master \u540c\u6b65\u6700\u65b0\u7684\u8def\u7531\u8868\uff0c\u5ba2\u6237\u7aef\u7684\u8def\u7531\u8868\u90fd\u662f\u4ece OB \u53bb\u62ff\u3002 \u8fd9\u6837\u505a\u7684\u597d\u5904\u4e3b\u8981\u6709\u4e24\u70b9\uff0c\u7b2c\u4e00\uff0c\u628a\u5927\u91cf\u7684\u4e1a\u52a1\u5ba2\u6237\u7aef\u8ddf\u96c6\u7fa4\u7684\u5927\u8111 Master \u505a\u4e86\u5929\u7136\u7684\u9694\u79bb\uff0c\u9632\u6b62\u8def\u7531\u8868\u8bf7\u6c42\u5f71\u54cd\u96c6\u7fa4\u7684\u7ba1\u7406\u3002\u7b2c\u4e8c\uff0c\u56e0\u4e3a OB \u53ea\u4f9b\u8def\u7531\u8868\u67e5\u8be2\uff0c\u4e0d\u53c2\u4e0e\u96c6\u7fa4\u7684\u7ba1\u7406\uff0c\u6240\u4ee5\u5b83\u53ef\u4ee5\u8fdb\u884c\u6c34\u5e73\u6269\u5c55\uff0c\u6781\u5927\u5730\u63d0\u5347\u4e86\u6211\u4eec\u8def\u7531\u8868\u7684\u67e5\u8be2\u80fd\u529b\u3002\u53e6\u5916\uff0c\u6211\u4eec\u5f15\u5165\u4e86 ZooKeeper \u505a\u5206\u5e03\u5f0f\u4ef2\u88c1\uff0c\u89e3\u51b3\u6211\u521a\u624d\u63d0\u5230\u7684 Master\u3001Slave \u5728\u7f51\u7edc\u5206\u5272\u60c5\u51b5\u4e0b\u7684\u201c\u8111\u88c2\u201d\u95ee\u9898\uff0c\u5e76\u4e14\u901a\u8fc7\u628a\u96c6\u7fa4\u7684\u5143\u6570\u636e\u5b58\u50a8\u5230 ZooKeeper\uff0c\u6211\u4eec\u4fdd\u8bc1\u4e86\u5143\u6570\u636e\u7684\u9ad8\u53ef\u9760\u3002<\/p>\n<h3>Cellar \u8282\u70b9\u5bb9\u707e<\/h3>\n<p>\u4ecb\u7ecd\u5b8c\u6574\u4f53\u7684\u67b6\u6784\uff0c\u6211\u4eec\u770b\u4e00\u4e0b Cellar \u600e\u4e48\u505a\u8282\u70b9\u5bb9\u707e\u3002\u4e00\u4e2a\u96c6\u7fa4\u8282\u70b9\u7684\u5b95\u673a\u4e00\u822c\u662f\u4e34\u65f6\u7684\uff0c\u4e00\u4e2a\u8282\u70b9\u7684\u7f51\u7edc\u6296\u52a8\u4e5f\u662f\u4e34\u65f6\u7684\uff0c\u5b83\u4eec\u4f1a\u5f88\u5feb\u5730\u6062\u590d\uff0c\u5e76\u91cd\u65b0\u52a0\u5165\u96c6\u7fa4\u3002\u56e0\u4e3a\u8282\u70b9\u7684\u4e34\u65f6\u79bb\u5f00\u5c31\u628a\u5b83\u5f7b\u5e95\u6458\u9664\uff0c\u5e76\u505a\u6570\u636e\u526f\u672c\u8865\u5168\u64cd\u4f5c\uff0c\u4f1a\u6d88\u8017\u5927\u91cf\u8d44\u6e90\uff0c\u8fdb\u800c\u5f71\u54cd\u5230\u4e1a\u52a1\u8bf7\u6c42\u3002\u6240\u4ee5\uff0c\u6211\u4eec\u5b9e\u73b0\u4e86 Handoff \u673a\u5236\u6765\u89e3\u51b3\u8fd9\u79cd\u8282\u70b9\u77ed\u65f6\u6545\u969c\u5e26\u6765\u7684\u5f71\u54cd\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p1.meituan.net\/travelcube\/37f17e7334a18992ab7385cb9dfd6dc3115713.png\" alt=\"\" \/><\/p>\n<p>\u5982\u4e0a\u56fe\u6240\u793a \uff0c\u5982\u679c A \u8282\u70b9\u5b95\u673a\u4e86\uff0c\u4f1a\u89e6\u53d1 Handoff \u673a\u5236\uff0c\u8fd9\u65f6\u5019\u4e2d\u5fc3\u8282\u70b9\u4f1a\u901a\u77e5\u5ba2\u6237\u7aef A\u8282\u70b9\u53d1\u751f\u4e86\u6545\u969c\uff0c\u8ba9\u5ba2\u6237\u7aef\u628a\u5206\u7247 1 \u7684\u8bf7\u6c42\u4e5f\u6253\u5230 B \u4e0a\u3002B \u8282\u70b9\u6b63\u5e38\u5904\u7406\u5b8c\u5ba2\u6237\u7aef\u7684\u8bfb\u5199\u8bf7\u6c42\u4e4b\u540e\uff0c\u8fd8\u4f1a\u628a\u672c\u5e94\u8be5\u5199\u5165 A \u8282\u70b9\u7684\u5206\u7247 1&amp;2 \u6570\u636e\u5199\u5165\u5230\u672c\u5730\u7684 Log \u4e2d\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p1.meituan.net\/travelcube\/6aa36b9d3b663e7af8239325a107735c65610.png\" alt=\"\" \/><\/p>\n<p>\u5982\u679c A \u8282\u70b9\u5b95\u673a\u540e 3~5 \u5206\u949f\uff0c\u6216\u8005\u7f51\u7edc\u6296\u52a8 30~50 \u79d2\u4e4b\u540e\u6062\u590d\u4e86\uff0cA \u8282\u70b9\u5c31\u4f1a\u4e0a\u62a5\u5fc3\u8df3\u5230\u4e2d\u5fc3\u8282\u70b9\uff0c\u4e2d\u5fc3\u8282\u70b9\u5c31\u4f1a\u901a\u77e5 B \u8282\u70b9\uff1a\u201c A \u8282\u70b9\u6062\u590d\u4e86\uff0c\u4f60\u53bb\u628a\u5b83\u4e0d\u5728\u671f\u95f4\u7684\u6570\u636e\u4f20\u7ed9\u5b83\u3002\u201d\u8fd9\u65f6\u5019\uff0cB \u8282\u70b9\u5c31\u4f1a\u628a\u672c\u5730\u5b58\u50a8\u7684 Log \u56de\u5199\u5230 A \u8282\u70b9\u4e0a\u3002\u7b49\u5230 A \u8282\u70b9\u62e5\u6709\u4e86\u6545\u969c\u671f\u95f4\u7684\u5168\u91cf\u6570\u636e\u4e4b\u540e\uff0c\u4e2d\u5fc3\u8282\u70b9\u5c31\u4f1a\u544a\u8bc9\u5ba2\u6237\u7aef\uff0cA \u8282\u70b9\u5df2\u7ecf\u5f7b\u5e95\u6062\u590d\u4e86\uff0c\u5ba2\u6237\u7aef\u5c31\u53ef\u4ee5\u91cd\u65b0\u628a\u5206\u7247 1 \u7684\u8bf7\u6c42\u6253\u56de A \u8282\u70b9\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p0.meituan.net\/travelcube\/edb2a314760155ddccc834ddab157ec6204737.png\" alt=\"\" \/><\/p>\n<p>\u901a\u8fc7\u8fd9\u6837\u7684\u64cd\u4f5c\uff0c\u6211\u4eec\u53ef\u4ee5\u505a\u5230\u79d2\u7ea7\u7684\u5feb\u901f\u8282\u70b9\u6458\u9664\uff0c\u800c\u4e14\u8282\u70b9\u6062\u590d\u540e\u52a0\u56de\uff0c\u53ea\u9700\u8865\u9f50\u5c11\u91cf\u7684\u589e\u91cf\u6570\u636e\u3002\u53e6\u5916\u5982\u679c A \u8282\u70b9\u8981\u505a\u5347\u7ea7\uff0c\u4e2d\u5fc3\u8282\u70b9\u5148\u901a\u8fc7\u4e3b\u52a8 Handoff \u628a A \u8282\u70b9\u6d41\u91cf\u5207\u5230 B \u8282\u70b9\uff0cA \u5347\u7ea7\u540e\u518d\u56de\u5199\u589e\u91cf Log\uff0c\u7136\u540e\u5207\u56de\u6d41\u91cf\u52a0\u5165\u96c6\u7fa4\u3002\u8fd9\u6837\u901a\u8fc7\u4e3b\u52a8\u89e6\u53d1 Handoff \u673a\u5236\uff0c\u6211\u4eec\u5c31\u5b9e\u73b0\u4e86\u9759\u9ed8\u5347\u7ea7\u7684\u529f\u80fd\u3002<\/p>\n<h3>Cellar \u8de8\u5730\u57df\u5bb9\u707e<\/h3>\n<p>\u4e0b\u9762\u6211\u4ecb\u7ecd\u4e00\u4e0b Cellar \u8de8\u5730\u57df\u5bb9\u707e\u662f\u600e\u4e48\u505a\u7684\u3002Cellar \u8ddf Squirrel \u9762\u5bf9\u7684\u8de8\u5730\u57df\u5bb9\u707e\u95ee\u9898\u662f\u4e00\u6837\u7684\uff0c\u89e3\u51b3\u65b9\u6848\u540c\u6837\u4e5f\u662f\u96c6\u7fa4\u95f4\u590d\u5236\u3002\u4ee5\u4e0b\u56fe\u4e00\u4e2a\u5317\u4eac\u4e3b\u96c6\u7fa4\u3001\u4e0a\u6d77\u4ece\u96c6\u7fa4\u7684\u8de8\u5730\u57df\u573a\u666f\u4e3a\u4f8b\uff0c\u6bd4\u5982\u8bf4\u5ba2\u6237\u7aef\u7684\u5199\u64cd\u4f5c\u5230\u4e86\u5317\u4eac\u7684\u4e3b\u96c6\u7fa4 A \u8282\u70b9\uff0cA \u8282\u70b9\u4f1a\u50cf\u6b63\u5e38\u96c6\u7fa4\u5185\u590d\u5236\u4e00\u6837\uff0c\u628a\u5b83\u590d\u5236\u5230 B \u548c D \u8282\u70b9\u4e0a\u3002\u540c\u65f6 A \u8282\u70b9\u8fd8\u4f1a\u628a\u6570\u636e\u590d\u5236\u4e00\u4efd\u5230\u4ece\u96c6\u7fa4\u7684 H \u8282\u70b9\u3002H \u8282\u70b9\u5904\u7406\u5b8c\u96c6\u7fa4\u95f4\u590d\u5236\u5199\u5165\u4e4b\u540e\uff0c\u5b83\u4e5f\u4f1a\u505a\u4ece\u96c6\u7fa4\u5185\u7684\u590d\u5236\uff0c\u628a\u8fd9\u4e2a\u5199\u64cd\u4f5c\u590d\u5236\u5230\u4ece\u96c6\u7fa4\u7684 I \u3001K \u8282\u70b9\u4e0a\u3002\u901a\u8fc7\u5728\u4e3b\u4ece\u96c6\u7fa4\u7684\u8282\u70b9\u95f4\u5efa\u7acb\u8fd9\u6837\u4e00\u4e2a\u590d\u5236\u94fe\u8def\uff0c\u6211\u4eec\u5b8c\u6210\u4e86\u96c6\u7fa4\u95f4\u7684\u6570\u636e\u590d\u5236\uff0c\u5e76\u4e14\u8fd9\u4e2a\u590d\u5236\u4fdd\u8bc1\u4e86\u6700\u4f4e\u7684\u8de8\u5730\u57df\u5e26\u5bbd\u5360\u7528\u3002\u540c\u6837\u7684\uff0c\u96c6\u7fa4\u95f4\u7684\u4e24\u4e2a\u8282\u70b9\u901a\u8fc7\u914d\u7f6e\u4e24\u4e2a\u53cc\u5411\u590d\u5236\u7684\u94fe\u8def\uff0c\u5c31\u53ef\u4ee5\u8fbe\u5230\u53cc\u5411\u540c\u6b65\u5f02\u5730\u591a\u6d3b\u7684\u6548\u679c\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p0.meituan.net\/travelcube\/d4b3ee6793337da0e8abf52c17044a09158127.png\" alt=\"\" \/><\/p>\n<h3>Cellar \u5f3a\u4e00\u81f4<\/h3>\n<p>\u6211\u4eec\u505a\u597d\u4e86\u8282\u70b9\u5bb9\u707e\u4ee5\u53ca\u8de8\u5730\u57df\u5bb9\u707e\u540e\uff0c\u4e1a\u52a1\u53c8\u5bf9\u6211\u4eec\u63d0\u51fa\u4e86\u66f4\u9ad8\u8981\u6c42\uff1a\u5f3a\u4e00\u81f4\u5b58\u50a8\u3002\u6211\u4eec\u4e4b\u524d\u7684\u6570\u636e\u590d\u5236\u662f\u5f02\u6b65\u7684\uff0c\u5728\u505a\u6545\u969c\u6458\u9664\u65f6\uff0c\u53ef\u80fd\u56e0\u4e3a\u6545\u969c\u8282\u70b9\u6570\u636e\u8fd8\u6ca1\u590d\u5236\u51fa\u6765\uff0c\u5bfc\u81f4\u6570\u636e\u4e22\u5931\u3002\u4f46\u662f\u5bf9\u4e8e\u91d1\u878d\u652f\u4ed8\u7b49\u573a\u666f\u6765\u8bf4\uff0c\u5b83\u4eec\u662f\u4e0d\u5bb9\u8bb8\u6570\u636e\u4e22\u5931\u7684\u3002\u9762\u5bf9\u8fd9\u4e2a\u96be\u9898\uff0c\u6211\u4eec\u8be5\u600e\u4e48\u89e3\u51b3\uff1f\u76ee\u524d\u4e1a\u754c\u4e3b\u6d41\u7684\u89e3\u51b3\u65b9\u6848\u662f\u57fa\u4e8e Paxos \u6216 Raft \u534f\u8bae\u7684\u5f3a\u4e00\u81f4\u590d\u5236\u3002\u6211\u4eec\u6700\u7ec8\u9009\u62e9\u4e86 Raft \u534f\u8bae\u3002\u4e3b\u8981\u662f\u56e0\u4e3a Raft \u8bba\u6587\u662f\u975e\u5e38\u8be6\u5b9e\u7684\uff0c\u662f\u4e00\u7bc7\u5de5\u7a0b\u5316\u7a0b\u5ea6\u5f88\u9ad8\u7684\u8bba\u6587\u3002\u4e1a\u754c\u4e5f\u6709\u4e0d\u5c11\u6bd4\u8f83\u6210\u719f\u7684 Raft \u5f00\u6e90\u5b9e\u73b0\uff0c\u53ef\u4ee5\u4f5c\u4e3a\u6211\u4eec\u7814\u53d1\u7684\u57fa\u7840\uff0c\u8fdb\u800c\u80fd\u591f\u7f29\u77ed\u7814\u53d1\u5468\u671f\u3002<\/p>\n<p>\u4e0b\u56fe\u662f\u73b0\u5728 Cellar \u96c6\u7fa4 Raft \u590d\u5236\u6a21\u5f0f\u4e0b\u7684\u67b6\u6784\u56fe\uff0c\u4e2d\u5fc3\u8282\u70b9\u4f1a\u505a Raft \u7ec4\u7684\u8c03\u5ea6\uff0c\u5b83\u4f1a\u51b3\u5b9a\u6bcf\u4e00\u4e2a Slot \u7684\u4e09\u526f\u672c\u5b58\u5728\u54ea\u4e9b\u8282\u70b9\u4e0a\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p0.meituan.net\/travelcube\/a92c8a4b93034f92c6bfdc3ec30dfc9c155473.png\" alt=\"\" \/><\/p>\n<p>\u5927\u5bb6\u53ef\u4ee5\u770b\u5230 Slot 1 \u5728\u5b58\u50a8\u8282\u70b9 1\u30012\u30014 \u4e0a\uff0cSlot 2 \u5728\u5b58\u50a8\u8282\u70b92\u30013\u30014\u4e0a\u3002\u6bcf\u4e2a Slot \u7ec4\u6210\u4e00\u4e2a Raft \u7ec4\uff0c\u5ba2\u6237\u7aef\u4f1a\u53bb Raft Leader \u4e0a\u8fdb\u884c\u8bfb\u5199\u3002\u7531\u4e8e\u6211\u4eec\u662f\u9884\u5206\u914d\u4e86 16384 \u4e2a Slot\uff0c\u6240\u4ee5\uff0c\u5728\u96c6\u7fa4\u89c4\u6a21\u5f88\u5c0f\u7684\u65f6\u5019\uff0c\u6211\u4eec\u7684\u5b58\u50a8\u8282\u70b9\u4e0a\u53ef\u80fd\u4f1a\u6709\u6570\u767e\u751a\u81f3\u4e0a\u5343\u4e2a Slot \u3002\u8fd9\u65f6\u5019\u5982\u679c\u6bcf\u4e2a Raft \u590d\u5236\u7ec4\u90fd\u6709\u81ea\u5df1\u7684\u590d\u5236\u7ebf\u7a0b\u3001 \u590d\u5236\u8bf7\u6c42\u548c Log\u7b49\uff0c\u90a3\u4e48\u8d44\u6e90\u6d88\u8017\u4f1a\u975e\u5e38\u5927\uff0c\u5199\u5165\u6027\u80fd\u4f1a\u5f88\u5dee\u3002\u6240\u4ee5\u6211\u4eec\u505a\u4e86 Multi Raft \u5b9e\u73b0\uff0c Cellar \u4f1a\u628a\u540c\u4e00\u4e2a\u8282\u70b9\u4e0a\u6240\u6709\u7684 Raft \u590d\u5236\u7ec4\u5199\u4e00\u4efd Log\uff0c\u7528\u540c\u4e00\u7ec4\u7ebf\u7a0b\u53bb\u505a\u590d\u5236\uff0c\u4e0d\u540c Raft \u7ec4\u95f4\u7684\u590d\u5236\u5305\u4e5f\u4f1a\u6309\u7167\u76ee\u6807\u8282\u70b9\u505a\u6574\u5408\uff0c\u4ee5\u4fdd\u8bc1\u5199\u5165\u6027\u80fd\u4e0d\u4f1a\u56e0 Raft \u7ec4\u8fc7\u591a\u800c\u53d8\u5dee\u3002 Raft \u5185\u90e8\u5176\u5b9e\u662f\u6709\u81ea\u5df1\u7684\u9009\u4e3b\u673a\u5236\uff0c\u5b83\u53ef\u4ee5\u63a7\u5236\u81ea\u5df1\u7684\u4e3b\u8282\u70b9\uff0c\u5982\u679c\u6709\u4efb\u4f55\u8282\u70b9\u5b95\u673a\uff0c\u5b83\u53ef\u4ee5\u901a\u8fc7\u9009\u4e3e\u673a\u5236\u9009\u51fa\u65b0\u7684\u4e3b\u8282\u70b9\u3002\u90a3\u4e48\uff0c\u4e2d\u5fc3\u8282\u70b9\u662f\u4e0d\u662f\u5c31\u4e0d\u9700\u8981\u7ba1\u7406 Raft \u7ec4\u4e86\u5417\uff1f\u4e0d\u662f\u7684\u3002\u8fd9\u91cc\u8bb2\u4e00\u4e2a\u5178\u578b\u7684\u573a\u666f\uff0c\u5982\u679c\u4e00\u4e2a\u96c6\u7fa4\u7684\u90e8\u5206\u8282\u70b9\u7ecf\u8fc7\u51e0\u8f6e\u5b95\u673a\u6062\u590d\u7684\u8fc7\u7a0b\uff0c Raft Leader \u5728\u5b58\u50a8\u8282\u70b9\u4e4b\u95f4\u4f1a\u53d8\u5f97\u6781\u5176\u4e0d\u5747\u3002\u800c\u4e3a\u4e86\u4fdd\u8bc1\u6570\u636e\u7684\u5f3a\u4e00\u81f4\uff0c\u5ba2\u6237\u7aef\u7684\u8bfb\u5199\u6d41\u91cf\u53c8\u5fc5\u987b\u53d1\u5230 Raft Leader\uff0c\u8fd9\u65f6\u5019\u96c6\u7fa4\u7684\u8282\u70b9\u6d41\u91cf\u4f1a\u5f88\u4e0d\u5747\u8861\u3002\u6240\u4ee5\u6211\u4eec\u7684\u4e2d\u5fc3\u8282\u70b9\u8fd8\u4f1a\u505a Raft \u7ec4\u7684 Leader \u8c03\u5ea6\u3002\u6bd4\u5982\u8bf4 Slot 1 \u5b58\u50a8\u5728\u8282\u70b9 1\u30012\u30014\uff0c\u5e76\u4e14\u8282\u70b9 1 \u662f Leader\u3002\u5982\u679c\u8282\u70b9 1 \u6302\u4e86\uff0cRaft \u628a\u8282\u70b9 2 \u9009\u6210\u4e86 Leader\u3002\u7136\u540e\u8282\u70b9 1 \u6062\u590d\u4e86\u5e76\u91cd\u65b0\u52a0\u5165\u96c6\u7fa4\uff0c\u4e2d\u5fc3\u8282\u70b9\u8fd9\u65f6\u4f1a\u8ba9\u8282\u70b9 2 \u628a Leader \u8fd8\u7ed9\u8282\u70b9 1 \u3002\u8fd9\u6837\uff0c\u5373\u4fbf\u7ecf\u8fc7\u4e00\u7cfb\u5217\u5b95\u673a\u548c\u6062\u590d\uff0c\u6211\u4eec\u5b58\u50a8\u8282\u70b9\u4e4b\u95f4\u7684 Leader \u6570\u76ee\u4ecd\u7136\u80fd\u4fdd\u8bc1\u662f\u5747\u8861\u7684\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u770b\u4e00\u4e0b Cellar \u5982\u4f55\u4fdd\u8bc1\u5b83\u7684\u7aef\u5230\u7aef\u9ad8\u6210\u529f\u7387\u3002\u8fd9\u91cc\u4e5f\u8bb2\u4e09\u4e2a\u5f71\u54cd\u6210\u529f\u7387\u7684\u95ee\u9898\u3002Cellar \u9047\u5230\u7684\u6570\u636e\u8fc1\u79fb\u548c\u70ed\u70b9 Key \u95ee\u9898\u4e0e Squirrel \u662f\u4e00\u6837\u7684\uff0c\u4f46\u89e3\u51b3\u65b9\u6848\u4e0d\u4e00\u6837\u3002\u8fd9\u662f\u56e0\u4e3a Cellar \u8d70\u7684\u662f\u81ea\u7814\u8def\u5f84\uff0c\u4e0d\u7528\u8003\u8651\u4e0e\u5b98\u65b9\u7248\u672c\u7684\u517c\u5bb9\u6027\uff0c\u5bf9\u67b6\u6784\u6539\u52a8\u66f4\u5927\u4e9b\u3002\u53e6\u4e00\u4e2a\u95ee\u9898\u662f\u6162\u8bf7\u6c42\u963b\u585e\u670d\u52a1\u961f\u5217\u5bfc\u81f4\u5927\u9762\u79ef\u8d85\u65f6\uff0c\u8fd9\u662f Cellar \u7f51\u7edc\u3001\u5de5\u4f5c\u591a\u7ebf\u7a0b\u6a21\u578b\u8bbe\u8ba1\u4e0b\u4f1a\u9047\u5230\u7684\u4e0d\u540c\u95ee\u9898\u3002<\/p>\n<h3>Cellar \u667a\u80fd\u8fc1\u79fb<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/p0.meituan.net\/travelcube\/fb9b9db3e37bf5f4d3676093aa1103fe185030.png\" alt=\"\" \/><\/p>\n<p>\u4e0a\u56fe\u662f Cellar \u667a\u80fd\u8fc1\u79fb\u67b6\u6784\u56fe\u3002\u6211\u4eec\u628a\u6876\u7684\u8fc1\u79fb\u5206\u6210\u4e86\u4e09\u4e2a\u72b6\u6001\u3002\u7b2c\u4e00\u4e2a\u72b6\u6001\u5c31\u662f\u6b63\u5e38\u7684\u72b6\u6001\uff0c\u6ca1\u6709\u4efb\u4f55\u8fc1\u79fb\u3002\u5982\u679c\u8fd9\u65f6\u5019\u8981\u628a Slot 2 \u4ece A \u8282\u70b9\u8fc1\u79fb\u5230 B\u8282\u70b9\uff0cA \u4f1a\u7ed9 Slot 2 \u6253\u4e00\u4e2a\u5feb\u7167\uff0c\u7136\u540e\u628a\u8fd9\u4e2a\u5feb\u7167\u5168\u91cf\u53d1\u5230 B \u8282\u70b9\u4e0a\u3002\u5728\u8fc1\u79fb\u6570\u636e\u7684\u65f6\u5019\uff0c B \u8282\u70b9\u7684\u56de\u5305\u4f1a\u5e26\u56de B \u8282\u70b9\u7684\u72b6\u6001\u3002B \u7684\u72b6\u6001\u5305\u62ec\u4ec0\u4e48\uff1f\u5f15\u64ce\u7684\u538b\u529b\u3001\u7f51\u5361\u6d41\u91cf\u3001\u961f\u5217\u957f\u5ea6\u7b49\u3002A \u8282\u70b9\u4f1a\u6839\u636e B \u8282\u70b9\u7684\u72b6\u6001\u8c03\u6574\u81ea\u5df1\u7684\u8fc1\u79fb\u901f\u5ea6\u3002\u50cf Squirrel \u4e00\u6837\uff0c\u5b83\u7ecf\u8fc7\u4e00\u6bb5\u65f6\u95f4\u8c03\u6574\u540e\uff0c\u8fc1\u79fb\u901f\u5ea6\u4f1a\u8fbe\u5230\u4e00\u4e2a\u52a8\u6001\u5e73\u8861\uff0c\u8fbe\u5230\u6700\u5feb\u901f\u7684\u8fc1\u79fb\uff0c\u540c\u65f6\u53c8\u5c3d\u53ef\u80fd\u5c0f\u5730\u5f71\u54cd\u4e1a\u52a1\u7684\u6b63\u5e38\u8bf7\u6c42\u3002<\/p>\n<p>\u5f53 Slot 2 \u8fc1\u79fb\u5b8c\u540e\uff0c \u4f1a\u8fdb\u5165\u56fe\u4e2d Slot 3 \u7684\u72b6\u6001\u3002\u5ba2\u6237\u7aef\u8fd9\u65f6\u53ef\u80fd\u8fd8\u6ca1\u66f4\u65b0\u8def\u7531\u8868\uff0c\u5f53\u5b83\u8bf7\u6c42\u5230\u4e86 A \u8282\u70b9\uff0cA \u8282\u70b9\u4f1a\u53d1\u73b0\u5ba2\u6237\u7aef\u8bf7\u6c42\u9519\u4e86\u8282\u70b9\uff0c\u4f46\u5b83\u4e0d\u4f1a\u8fd4\u56de\u9519\u8bef\uff0c\u5b83\u4f1a\u628a\u8bf7\u6c42\u4ee3\u7406\u5230 B \u8282\u70b9\u4e0a\uff0c\u7136\u540e\u628a B \u7684\u54cd\u5e94\u5305\u518d\u8fd4\u56de\u5ba2\u6237\u7aef\u3002\u540c\u65f6\u5b83\u4f1a\u544a\u8bc9\u5ba2\u6237\u7aef\uff0c\u9700\u8981\u66f4\u65b0\u4e00\u4e0b\u8def\u7531\u8868\u4e86\uff0c\u6b64\u540e\u5ba2\u6237\u7aef\u5c31\u80fd\u76f4\u63a5\u8bbf\u95ee\u5230 B \u8282\u70b9\u3002\u8fd9\u6837\u5c31\u89e3\u51b3\u4e86\u5ba2\u6237\u7aef\u8def\u7531\u66f4\u65b0\u5ef6\u8fdf\u9020\u6210\u7684\u8bf7\u6c42\u9519\u8bef\u3002<\/p>\n<h3>Cellar \u5feb\u6162\u5217\u961f<\/h3>\n<p>\u4e0b\u56fe\u4e0a\u65b9\u662f\u4e00\u4e2a\u6807\u51c6\u7684\u7ebf\u7a0b\u961f\u5217\u6a21\u578b\u3002\u7f51\u7edc\u7ebf\u7a0b\u6c60\u63a5\u6536\u7f51\u7edc\u6d41\u91cf\u89e3\u6790\u51fa\u8bf7\u6c42\u5305\uff0c\u7136\u540e\u628a\u8bf7\u6c42\u653e\u5230\u5de5\u4f5c\u961f\u5217\u91cc\uff0c\u5de5\u4f5c\u7ebf\u7a0b\u6c60\u4f1a\u4ece\u5de5\u4f5c\u961f\u5217\u53d6\u8bf7\u6c42\u6765\u5904\u7406\uff0c\u7136\u540e\u628a\u54cd\u5e94\u5305\u653e\u56de\u7f51\u7edc\u7ebf\u7a0b\u6c60\u53d1\u51fa\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p0.meituan.net\/travelcube\/9018dd1a30e06f04217cf852471dc710185303.png\" alt=\"\" \/><\/p>\n<p>\u6211\u4eec\u5206\u6790\u7ebf\u4e0a\u53d1\u751f\u7684\u8d85\u65f6\u6848\u4f8b\u65f6\u53d1\u73b0\uff0c\u4e00\u6279\u8d85\u65f6\u8bf7\u6c42\u5f53\u4e2d\u5f80\u5f80\u53ea\u6709\u4e00\u4e24\u4e2a\u8bf7\u6c42\u662f\u5f15\u64ce\u5904\u7406\u6162\u5bfc\u81f4\u7684\uff0c\u5927\u90e8\u5206\u8bf7\u6c42\uff0c\u53ea\u662f\u56e0\u4e3a\u5728\u961f\u5217\u7b49\u5f85\u8fc7\u4e45\u5bfc\u81f4\u6574\u4f53\u54cd\u5e94\u65f6\u95f4\u8fc7\u957f\u800c\u8d85\u65f6\u4e86\u3002\u4ece\u7ebf\u4e0a\u5206\u6790\u6765\u770b\uff0c\u771f\u6b63\u7684\u6162\u8bf7\u6c42\u5360\u8d85\u65f6\u8bf7\u6c42\u7684\u6bd4\u4f8b\u53ea\u6709 1\/20\u3002<\/p>\n<p>\u6211\u4eec\u7684\u89e3\u6cd5\u662f\u4ec0\u4e48\u6837\uff1f\u5f88\u7b80\u5355\uff0c\u62c6\u7ebf\u7a0b\u6c60\u3001\u62c6\u961f\u5217\u3002\u6211\u4eec\u7684\u7f51\u7edc\u7ebf\u7a0b\u5728\u6536\u5230\u5305\u4e4b\u540e\uff0c\u4f1a\u6839\u636e\u5b83\u7684\u8bf7\u6c42\u7279\u70b9\uff0c\u662f\u8bfb\u8fd8\u662f\u5199\uff0c\u5feb\u8fd8\u662f\u6162\uff0c\u5206\u5230\u56db\u4e2a\u961f\u5217\u91cc\u3002\u8bfb\u5199\u8bf7\u6c42\u6bd4\u8f83\u597d\u533a\u5206\uff0c\u4f46\u5feb\u6162\u600e\u4e48\u5206\u5f00\uff1f\u6211\u4eec\u4f1a\u6839\u636e\u8bf7\u6c42\u7684 Key \u4e2a\u6570\u3001Value\u5927\u5c0f\u3001\u6570\u636e\u7ed3\u6784\u5143\u7d20\u6570\u7b49\u5bf9\u8bf7\u6c42\u8fdb\u884c\u5feb\u6162\u533a\u5206\u3002\u7136\u540e\u7528\u5bf9\u5e94\u7684\u56db\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u6c60\u5904\u7406\u5bf9\u5e94\u961f\u5217\u7684\u8bf7\u6c42\uff0c\u5c31\u5b9e\u73b0\u4e86\u5feb\u6162\u8bfb\u5199\u8bf7\u6c42\u7684\u9694\u79bb\u3002\u8fd9\u6837\u5982\u679c\u6211\u6709\u4e00\u4e2a\u8bfb\u7684\u6162\u8bf7\u6c42\uff0c\u4e0d\u4f1a\u5f71\u54cd\u53e6\u5916\u4e09\u79cd\u8bf7\u6c42\u7684\u6b63\u5e38\u5904\u7406\u3002\u4e0d\u8fc7\u8fd9\u6837\u4e5f\u4f1a\u5e26\u6765\u4e00\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u7684\u7ebf\u7a0b\u6c60\u4ece\u4e00\u4e2a\u53d8\u6210\u56db\u4e2a\uff0c\u90a3\u7ebf\u7a0b\u6570\u662f\u4e0d\u662f\u53d8\u6210\u539f\u6765\u7684\u56db\u500d\uff1f\u5176\u5b9e\u5e76\u4e0d\u662f\u7684\uff0c\u6211\u4eec\u67d0\u4e2a\u7ebf\u7a0b\u6c60\u7a7a\u95f2\u7684\u65f6\u5019\u4f1a\u53bb\u5e2e\u52a9\u5176\u5b83\u7684\u7ebf\u7a0b\u6c60\u5904\u7406\u8bf7\u6c42\u3002\u6240\u4ee5\uff0c\u6211\u4eec\u7ebf\u7a0b\u6c60\u53d8\u6210\u4e86\u56db\u4e2a\uff0c\u4f46\u662f\u7ebf\u7a0b\u603b\u6570\u5e76\u6ca1\u6709\u53d8\u3002\u6211\u4eec\u7ebf\u4e0a\u9a8c\u8bc1\u4e2d\u8fd9\u6837\u7684\u8bbe\u8ba1\u80fd\u628a\u670d\u52a1 TP999 \u7684\u5ef6\u8fdf\u964d\u4f4e 86%\uff0c\u53ef\u5927\u5e45\u964d\u4f4e\u8d85\u65f6\u7387\u3002<\/p>\n<h3>Cellar \u70ed\u70b9 Key<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/p0.meituan.net\/travelcube\/2b3c788601a77e8983f8ca27c77f2989289020.png\" alt=\"\" \/><\/p>\n<p>\u4e0a\u56fe\u662f Cellar \u70ed\u70b9 Key \u89e3\u51b3\u65b9\u6848\u7684\u67b6\u6784\u56fe\u3002\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u4e2d\u5fc3\u8282\u70b9\u52a0\u4e86\u4e00\u4e2a\u804c\u8d23\uff0c\u591a\u4e86\u70ed\u70b9\u533a\u57df\u7ba1\u7406\uff0c\u5b83\u73b0\u5728\u4e0d\u53ea\u8d1f\u8d23\u6b63\u5e38\u7684\u6570\u636e\u526f\u672c\u5206\u5e03\uff0c\u8fd8\u8981\u7ba1\u7406\u70ed\u70b9\u6570\u636e\u7684\u5206\u5e03\uff0c\u56fe\u793a\u8fd9\u4e2a\u96c6\u7fa4\u5728\u8282\u70b9 C\u3001D \u653e\u4e86\u70ed\u70b9\u533a\u57df\u3002\u6211\u4eec\u901a\u8fc7\u8bfb\u5199\u6d41\u7a0b\u770b\u4e00\u4e0b\u8fd9\u4e2a\u65b9\u6848\u662f\u600e\u4e48\u8fd0\u8f6c\u7684\u3002\u5982\u679c\u5ba2\u6237\u7aef\u6709\u4e00\u4e2a\u5199\u64cd\u4f5c\u5230\u4e86 A \u8282\u70b9\uff0cA \u8282\u70b9\u5904\u7406\u5b8c\u6210\u540e\uff0c\u4f1a\u6839\u636e\u5b9e\u65f6\u7684\u70ed\u70b9\u7edf\u8ba1\u7ed3\u679c\u5224\u65ad\u5199\u5165\u7684 Key \u662f\u5426\u4e3a\u70ed\u70b9\u3002\u5982\u679c\u8fd9\u4e2a Key \u662f\u4e00\u4e2a\u70ed\u70b9\uff0c\u90a3\u4e48\u5b83\u4f1a\u5728\u505a\u96c6\u7fa4\u5185\u590d\u5236\u7684\u540c\u65f6\uff0c\u8fd8\u4f1a\u628a\u8fd9\u4e2a\u6570\u636e\u590d\u5236\u6709\u70ed\u70b9\u533a\u57df\u7684\u8282\u70b9\uff0c\u4e5f\u5c31\u662f\u56fe\u4e2d\u7684 C\u3001D \u8282\u70b9\u3002\u540c\u65f6\uff0c\u5b58\u50a8\u8282\u70b9\u5728\u8fd4\u56de\u7ed3\u679c\u7ed9\u5ba2\u6237\u7aef\u65f6\uff0c\u4f1a\u544a\u8bc9\u5ba2\u6237\u7aef\uff0c\u8fd9\u4e2a Key \u662f\u70ed\u70b9\uff0c\u8fd9\u65f6\u5ba2\u6237\u7aef\u5185\u4f1a\u7f13\u5b58\u8fd9\u4e2a\u70ed\u70b9 Key\u3002\u5f53\u5ba2\u6237\u7aef\u6709\u8fd9\u4e2a Key \u7684\u8bfb\u8bf7\u6c42\u65f6\uff0c\u5b83\u5c31\u4f1a\u76f4\u63a5\u53bb\u70ed\u70b9\u533a\u57df\u505a\u6570\u636e\u7684\u8bfb\u53d6\u3002\u901a\u8fc7\u8fd9\u6837\u7684\u65b9\u5f0f\uff0c\u6211\u4eec\u53ef\u4ee5\u505a\u5230\u53ea\u5bf9\u70ed\u70b9\u6570\u636e\u505a\u6269\u5bb9\uff0c\u4e0d\u50cf Squirrel \uff0c\u8981\u628a\u6574\u4e2a Slot \u8fc1\u51fa\u6765\u505a\u6269\u5bb9\u3002\u6709\u5fc5\u8981\u7684\u8bdd\uff0c\u4e2d\u5fc3\u8282\u70b9\u4e5f\u53ef\u4ee5\u628a\u70ed\u70b9\u533a\u57df\u653e\u5230\u96c6\u7fa4\u7684\u6240\u6709\u8282\u70b9\u4e0a\uff0c\u6240\u6709\u7684\u70ed\u70b9\u8bfb\u8bf7\u6c42\u5c31\u80fd\u5747\u8861\u7684\u5206\u5230\u6240\u6709\u8282\u70b9\u4e0a\u3002\u53e6\u5916\uff0c\u901a\u8fc7\u8fd9\u79cd\u5b9e\u65f6\u7684\u70ed\u70b9\u6570\u636e\u590d\u5236\uff0c\u6211\u4eec\u5f88\u597d\u5730\u89e3\u51b3\u4e86\u7c7b\u4f3c\u5ba2\u6237\u7aef\u7f13\u5b58\u70ed\u70b9 KV \u65b9\u6848\u9020\u6210\u7684\u4e00\u81f4\u6027\u95ee\u9898\u3002<\/p>\n<h2>\u53d1\u5c55\u89c4\u5212\u548c\u4e1a\u754c\u8d8b\u52bf<\/h2>\n<p>\u6700\u540e\uff0c\u4e00\u8d77\u6765\u770b\u770b\u6211\u4eec\u9879\u76ee\u7684\u89c4\u5212\u548c\u4e1a\u754c\u7684\u6280\u672f\u8d8b\u52bf\u3002\u8fd9\u90e8\u5206\u5185\u5bb9\u4f1a\u6309\u7167\u670d\u52a1\u3001\u7cfb\u7edf\u3001\u786c\u4ef6\u4e09\u5c42\u6765\u8fdb\u884c\u9610\u8ff0\u3002\u9996\u5148\u5728\u670d\u52a1\u5c42\uff0c\u4e3b\u8981\u6709\u4e09\u70b9\uff1a<\/p>\n<ul>\n<li>\u7b2c\u4e00\uff0cRedis Gossip \u534f\u8bae\u4f18\u5316\u3002\u5927\u5bb6\u90fd\u77e5\u9053 Gossip \u534f\u8bae\u5728\u96c6\u7fa4\u7684\u89c4\u6a21\u53d8\u5927\u4e4b\u540e\uff0c\u6d88\u606f\u91cf\u4f1a\u5267\u589e\uff0c\u5b83\u7684 Failover \u65f6\u95f4\u4e5f\u4f1a\u53d8\u5f97\u8d8a\u6765\u8d8a\u957f\u3002\u6240\u4ee5\u5f53\u96c6\u7fa4\u89c4\u6a21\u8fbe\u5230 TB \u7ea7\u540e\uff0c\u96c6\u7fa4\u7684\u53ef\u7528\u6027\u4f1a\u53d7\u5230\u5f88\u5927\u7684\u5f71\u54cd\uff0c\u6240\u4ee5\u6211\u4eec\u540e\u9762\u4f1a\u91cd\u70b9\u5728\u8fd9\u65b9\u9762\u505a\u4e00\u4e9b\u4f18\u5316\u3002<\/li>\n<li>\u7b2c\u4e8c\uff0c\u6211\u4eec\u5df2\u7ecf\u5728 Cellar \u5b58\u50a8\u8282\u70b9\u7684\u6570\u636e\u526f\u672c\u95f4\u505a\u4e86 Raft \u590d\u5236\uff0c\u53ef\u4ee5\u4fdd\u8bc1\u6570\u636e\u5f3a\u4e00\u81f4\uff0c\u540e\u9762\u6211\u4eec\u4f1a\u5728 Cellar \u7684\u4e2d\u5fc3\u70b9\u5185\u90e8\u4e5f\u505a\u4e00\u4e2a Raft \u590d\u5236\uff0c\u8fd9\u6837\u5c31\u4e0d\u7528\u4f9d\u8d56\u4e8e ZooKeeper \u505a\u5206\u5e03\u5f0f\u4ef2\u88c1\u3001\u5143\u6570\u636e\u5b58\u50a8\u4e86\uff0c\u6211\u4eec\u7684\u67b6\u6784\u4e5f\u4f1a\u53d8\u5f97\u66f4\u52a0\u7b80\u5355\u3001\u53ef\u9760\u3002<\/li>\n<li>\u7b2c\u4e09\uff0cSquirrel \u548c Cellar \u867d\u7136\u90fd\u662f KV 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