UNSUBSCRIBE
          
        
        
        
        
        
        
        Syntax
        UNSUBSCRIBE [channel [channel ...]]
- Available since:
- Redis Open Source 2.0.0
- Time complexity:
- O(N) where N is the number of channels to unsubscribe.
- ACL categories:
- 
              
                @pubsub,@slow,
Unsubscribes the client from the given channels, or from all of them if none is given.
When no channels are specified, the client is unsubscribed from all the previously subscribed channels. In this case, a message for every unsubscribed channel will be sent to the client.
Return information
        When successful, this command doesn't return anything. Instead, for each channel, one message with the first element being the string 
    
      
      
      
      
    
  unsubscribe is pushed as a confirmation that the command succeeded.