HMSET (deprecated)
As of Redis version 4.0.0, this command is regarded as deprecated.
It can be replaced by HSET with multiple field-value pairs when migrating or writing new code.
Syntax
        HMSET key field value [field value ...]
- Available since:
 - 2.0.0
 - Time complexity:
 - O(N) where N is the number of fields being set.
 - ACL categories:
 - 
              
                
@write,@hash,@fast, 
Sets the specified fields to their respective values in the hash stored at
key.
This command overwrites any specified fields already existing in the hash.
If key does not exist, a new key holding a hash is created.
Examples
RESP2/RESP3 Reply
Simple string reply:OK.