DBSIZE
Syntax
        DBSIZE
- Available since:
 - 1.0.0
 - Time complexity:
 - O(1)
 - ACL categories:
 - 
              
                
@keyspace,@read,@fast, 
Return the number of keys in the currently-selected database.
DBSIZE
@keyspace,
              
                @read,
              
                @fast,
              
            Return the number of keys in the currently-selected database.