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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.电视台演播室情感追踪栏目，肖红邀请了讲述者刘美佳，她讲述了自己那段曲折离奇的亲身经历。美少女刘美佳在15岁生日的那天,她妈妈俞兰兰去菜市场买了一只土鸡为女儿祝贺生日，路上，被红城康富房地产公司总经理林鉴拦住。林鉴问刘美佳是不是他的女儿……The Last Watch Before Work: "Parent-Child Kingdom Dissecting Pregnant Women's Belly Incident"124. X.X.250Among the 17 sections of the "Learning Power" website, learning new ideas, 19 major times, learning research, Xi Jinping's Wen Hui, learning TV stations, etc. are directly related to the speeches and activities of General Secretary Xi Jinping. Among them, the "Learning New Ideas" section focuses on learning Xi Jinping's socialism with Chinese characteristics in the new era. In addition to displaying the "Eight Clarities" and "Fourteen Persistences", it also pays attention to Xi Jinping's important activities, important meetings, important speeches, important articles, overseas visits, instructions and instructions, letters and congratulatory messages, etc.B women: foil individual, foil group, epee individual, epee group.