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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.In the last article, we have learned how to use the iptables command to view rules, so in this article we will summarize how to manage rules.怀旧动画之美国部分经典之作。央视周末晚六点半档热播作品。作品叙述了一个叫亨利的13岁男孩在度假途中，在他的旅行箱里意外发现了一种长着尖耳朵、翘门牙、细尾巴的微型小人——“小不点”。“小不点”有一个完整的家庭：爷爷、爸爸、妈妈和三个孩子（21岁的丁姬，13岁的汤姆和10岁的露西）。丁姬是一个冒失的粗喉咙飞行员。此后，他们就住在亨利卧室的通风道里，亨利的宠物龟也成了他们的好朋友。美国动画片中与孩子们作对的反派角色总是大人，如《丹佛——最后的恐龙》。本片也不例外，阴森的博士和他的助手总是带着高尖端科技的仪器，妄图捕获这些小家伙。凭借小不点们自身的聪明伶俐和亨利无微不至的保护，大人们的阴谋一次次的破产。明朝年间，太后赐婚金江两家，安排金府公子金元宝娶江阁老的女儿晓萱，不料江晓萱为了追求爱情选择逃婚。古灵精怪、侠肝义胆的侠女玉麒麟为了帮养母找回亲生儿子，多番试图潜入金家，却没想到阴错阳差间成了江晓萱的代嫁新娘，嫁入金府。出身江湖的她与贵族生活格格不入，仿佛大象闯进了瓷器店，闹出了不少笑话。韩信心中隐隐觉得，齐国现在有着与越国不相上下的实力，完全可以与之一战。而且，这个数字还在飞速上涨中，估计中午时候，就能翻上一倍。The faster the shutter speed, the clearer the image of the moving object will appear on the negative.