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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.男主角朝阳是一名快递员，却拥有让常人羡慕的超能力，骑车速度秒杀一切现有交通工具，所以城中所有急件要件都是由他来送递，常年稳居快递哥榜首。这身专业又复古的骑手装扮，看得出服化道做得十分细致用心。奋斗中的小镇青年遇到大城市的独居老人，同样孤独的两个人，不同的社会层次，不同的生活背景让他们之间矛盾频发、笑料百出，最终建立起跨血缘的深厚亲情。诸先生和绿萝都稍微有些慌乱，可是根本来不及拒绝，苏岸已经拜倒在身前。这套剧集展现了大量前沿尖端的高科技侦破技术：弹道学、犯罪危险因子学、法医毒理学、DNA破裂鉴定、咬痕与血型分析、齿科学、痕迹学、犯罪变态心理学等，因此掀起了全球“法医学热潮。影片讲述女护士与已婚男医生搞出婚外情，后来更因意外怀孕导致二人关系决裂，女护士在堕胎时遭阴灵穿身而入，堕下死胎，怎知胎中并非正常婴儿，而是邪灵附体之恶胎，由此引出连串惊悚灵异事件Huang Xiaoming Spokesman: 1 million RMB per year Li Xiuxian Spokesman: 1 million RMB every three years