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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.　　充满了冲突的校园生活就此拉开序幕，想要解决问题的赵强子自己却成为了最大的问题。在这里，赵强子需要面对的不仅仅是来自学生们的非议和压力，更在无意之中发现了学校财团那不可告人的秘密One day, a 7-year-old child said to her, "Mom, I always want to shout like hell outside. I'm afraid I can't help going home." The child has just entered primary school and likes to stick to his mother to talk to her, but if he speaks a little louder, Mary will be disgusted. Mary explained to her again and again, "It's not because you're not saying the wrong thing, it's because Mom is sensitive to voice."从陆天恩一生的际遇中，我们看到的是一幅中国近百年来历史变迁的绘卷。改编自白先勇同名小说。该剧描述1945年，众人沉浸在抗战胜利的喜悦时，马上面临继起的国共内战，再次被战火无情催逼、生死两隔的动人情感。彩儿一进门就得了苏岸的指点，看着面前英俊潇洒的男子，心中暗道：他就是越王？大小姐念念不忘的那个男子？是依兰小姐让你来找寡人的？尹旭低声询问。2. "Keeping pace with the times" is the soul of the important thought of "Three Represents". The Party committee and members of the group company can analyze and solve new problems with new thinking and new ways, so as to keep the state of "keeping pace with the times" in all work.