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Sentinel clusters communicate with each other, Communicates the status of the redis node, Make corresponding judgment and process, The subjective offline state and the objective offline state here are more important states, They determine whether to fail over, You can subscribe to the specified channel information, When the server fails, notify the administrator that the client can regard Sentinel as a Redis server that only provides subscription function. You cannot use the PUBLISH command to send information to this server, but you can use the SUBSCRIBE command or the PSUBSCRIBE command to obtain corresponding event reminders by subscribing to a given channel. A channel can receive events with the same name as this channel. For example, a channel named + sdown can receive events that all instances enter the subjective offline (SDOWN) state.2002.07-猫的报恩自己的计划误打误撞地被灌婴破坏之后，韩信的心情就颇为忐忑，刘邦对于自己在赵国的行动到底是何种态度，是否会有功高震主的嫌疑，是否会因为此事而猜忌自己。根据东野圭吾畅销悬疑小说《长长的回廊》改编。回廊亭大宅中暗藏无数秘密，绝望女人为爱复仇的欲望纷争正在上演！我答应你的第三件事，就是放你走。8-13 User Profile: Copy the previous program user_profile. Py and call build_profile () to create a profile about you; When calling this function, specify your first and last names and three key-value pairs that describe you.