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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."Then you didn't take any remedial measures at that time?" I asked.林锋被人打晕，醒来后发现自己被铁链绑在一个废旧的仓库里。一个戴着奇异面具的男人质问林锋：高建辉为什么跳楼自杀？面具男人自称是高建辉的儿子高小攀，他逼林锋说出高建辉死亡的真相。一个个与高建辉相关的人浮出水面。有对高建辉行贿的亲戚、高建辉的情人、高建辉公司的合伙人、高建辉的妻子。林锋还说他偷听到高建辉被一个叫三石的人勒索好几百多万。林锋以为说出了全部知道的真相，将很快被放。没想到，面具男人手持斧头挟持了林锋的女儿。面具男人丧心病狂地逼迫林锋让他不要隐瞒，把整个故事讲完整。三石究竟是谁？林锋和女儿能否逃出去？真相之下另有真相，原来每个人心中都蕴藏着一个不为人知的秘密，所有的“黑暗面”交织在一起如同一个巨大的漩涡，吞噬着贪婪、自私、欲望、复仇……最终，谁会得到救赎？任程伟(blog)在剧中饰演男一号郑汉民，从20岁一直演到70岁，第一次挑战如此大年龄跨度的角色让任程伟自己觉得很兴奋。　　在新剧《城里城外》里，任程伟从人物的青春年少一直演到双鬓斑白，足足过了把戏瘾。凭借多年丰富的表演经验和扎实的舞台功底，任程伟笑言在《城里城外》中扮演中年 、老年郑汉民并不难，但演20岁的小伙子就有点紧张，生怕一笑笑出一脸褶子。说到这里，任程伟有点不好意思地摸摸自己的短寸头……In the in-depth learning competition, I often look for relevant papers and try to find out the solving skills adopted by the author in similar situations.　　首先醒来的是大真。奇怪的事情连连出现。大真竟然一反出事前的性格，好像完全成为了浩真——他的性格，举止，谈话，回忆，全部都像是浩真附了体。浩真尚在昏迷中，悲伤的恩淑对大真的变化非常奇怪的同时，也不禁相信有着某种超自然的存在，慢慢接受大真变成了丈夫浩真。可就是因为这个时机不对的问题，导致了现在这样尴尬为难的局面，同时还隐藏着巨大的风险。