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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.4 Easily implement revocation and redo of requests太阳快落山的时候，只剩下了一架空车子，一些没买到的人催着问下批货什么时候到，杨长帆估摸着要三天后，没买到的赶紧说给我留一个，这才失望散去。这是一个有关个人成长与追寻自我的故事。当红女明星林若依演艺生涯再次因为文化底蕴不足而闹出事业危机，对手公司抓住了这次机会让林若依在媒体面前大跌形象，面对再次因为文化知识而引发的事业危机，林若依毅然决然要求重新回学校继续求学。校园里，胡氏集团老总之子胡方旭继续对自己失去的记忆耿耿于怀，胡方旭顾不得其他人对于自己的形象质疑，一心期望可以寻找回自己失去的记忆。于是，林若依偷偷到学校里参观，胡方旭独自在校园里寻找记忆，二人在林若依未入校的时候与胡方旭不打不相识。经历波折、误解到最终互相理解，发展到了最后，林若依和胡方旭却发现，原来彼此一直都是相爱的人。Is this Shanghai? If it is a novel, then the city cannot be verified.杉咲花将主演明年1月开播的朝日电视台木9新剧「ハケン占い師アタル」《派遣占卜师ataru》，导演·脚本游川和彦。主人公的场中是一个拥有能看见人内心烦恼这一特殊能力的派遣人员，她将利用这一能力为公司的社员们解决各种各样的烦恼