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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.一对超人老夫老妻到处为生活寻找“刺激”的故事。古天乐是村公所的公务员，吴君如是包子铺的老板娘，多年前两人曾是身怀超能力，叱咤江湖的囧囧侠和香香侠。退隐之后，却因为天下第一武林大会，让他们的婚姻亮起了红灯Smoke bombs before burning:在12世纪前后，绿林侠客罗宾汉的名字响彻英格兰每一个角落，他行侠仗义，劫富济贫，博得底层百姓的爱戴与赞誉，同时也遭到富豪权贵的憎恨，必欲除之而后快。每日里，罗宾汉与伙伴们欢歌笑语，尽情享受自由的生活，而小老鼠杰瑞则跟随着罗宾汉度过快乐的每一天，它同时也是罗宾汉和约翰情人玛瑞安的联络人。与此同时，图谋从老哥理查德大帝手中夺取英格兰王位的约翰对这群绿林好汉恨之入骨，他怀疑城中有罗宾汉的奸细，在佞臣的安排下，他们派出汤姆探侦奸细的消息。0 Unregisters multiple delegate instances or methods for an event via-=随后，阴险狡诈、极擅用毒的华山派掌门上场。反倒是结果着实让人有些欣喜，有些兴奋。