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In the last article, we explained Redis' master-slave cluster mode in detail. In fact, the configuration of this cluster mode is very simple. It only needs to be configured on Slave's nodes. The configuration of Master's master node does not need to be changed. However, one thing is that the persistent configuration of Master and Slave nodes should be consistent as far as possible, otherwise there will be strange problems. Starting today, we will begin to talk about the second mode of Redis cluster mode. That is, the "Sentinel" mode, which was provided from version 2.6 of Redis, but the mode of this version was unstable at that time. The Sentinel mode did not stabilize until version 2.8 of Redis. In the production environment, if you want to use the Sentinel mode of Redis, you will try to use the version after version 2.8 of Redis. Whether it is master-slave mode or sentinel mode, both modes have a problem and cannot be expanded horizontally, and the high availability of these two modes will be limited by the memory of Master master node. Another point is that the configuration of Sentinel mode is not simple or even complicated, so neither mode is recommended in industrial scenes. If you want to use it, you must have solutions to related problems to avoid subsequent problems.馨馨，玄铁重剑怎么就熔了？还有，这个什么神雕大侠杨过是哪里来的？文小桃不由问向吕馨。沥海海舍附近，杨长帆拥着翘儿走了一路，才终于说清了前因后果。臣已经听说了。　　面对种种悬念，《丑女大翻身》剧组成员依旧保持着以往一贯的神秘态度，纷纷表示自己尚未看到全部剧本，对结局毫不知情。此时，美版《丑女贝蒂》却在10月16日播出，首集长达2小时。这部一度陷入“限播令”的美剧将播出时间一推再推，终于在万众期待下登录荧屏，却“十分巧合”地成了《丑女大翻身》的剧透参考——与正式开机的《丑女大翻身》相隔只差一个星期。220. X.X.126