SWAPDB
Syntax
        SWAPDB index1 index2
- Available since:
 - 4.0.0
 - Time complexity:
 - O(N) where N is the count of clients watching or blocking on keys from both databases.
 - ACL categories:
 - 
              
                
@keyspace,@write,@fast,@dangerous, 
This command swaps two Redis databases, so that immediately all the clients connected to a given database will see the data of the other database, and the other way around. Example:
SWAPDB 0 1
This will swap database 0 with database 1. All the clients connected with database 0 will immediately see the new data, exactly like all the clients connected with database 1 will see the data that was formerly of database 0.
Examples
SWAPDB 0 1
        
        
        
          
          
          
          
            
            
            RESP2/RESP3 Reply
Simple string reply:OK.