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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.大苞谷看着众人无可奈何的样子，很满意。该剧讲述了为了复仇而赌上一切的检察官，和因为和财阀结婚而毁了人生的女明星之间的激情爱情故事。It mainly refers to the news in the traditional fields of politics, economy, culture and military, and also includes the mobile Internet and O2O, which are subdivided into vertical fields and carry different products. This market is not large enough and the ceiling is relatively low, so many information and news platforms either do not do much or have to continuously expand their borders.大学女生白墨桃在课外活动中于雷峰塔误入豪门公子尹苍冬的结界，而尹苍冬实际身份却是隐藏于人类世界的神羽族继承人，尹苍冬认定白墨桃是宿敌蛇族一员，对白墨桃展开...改编自同名漫画《仙尊奶爸当赘婿》，动态漫画即将于6月25日火热上线，快来看纵横诸天的霸仙尊降临蓝星，如何宠妻爱女，横扫众多开挂党吧~