HKEYS
          
        
        
        
        
        
        
        Syntax
        HKEYS key
- Available since:
- Redis Open Source 2.0.0
- Time complexity:
- O(N) where N is the size of the hash.
- ACL categories:
- 
              
                @read,@hash,@slow,
Returns all field names in the hash stored at key.
Examples
Return information
        Array reply: a list of fields in the hash, or an empty list when the key does not exist