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讲述了十六世纪泰缅战争，缅甸军压大城王朝首都，大城王朝（阿瑜陀耶王朝）岌岌可危。大城王朝人民多番力抗强敌大军保卫国家的可歌可泣。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.Table tennis is called "national ball" in China.记住，力气要足，嗓门要大。First of all, it can be seen from the log in case 1 (if you understand the default situation, there is no need to go back to the log at this time, which is naturally formed in your brain). In order to have the current situation 3, first of all, let View's onTouchEvent () not consume the down event (if consumption is situation 2, the analysis has been completed). At the same time, since View's onTouchEvent () does not consume the down event, then subsequent events will no longer be passed to View, that is to say, there is nothing wrong with View, so the interface is equivalent to the following figure: