Returns all values in the hash stored at key.
*Return value
Array reply: list of values in the hash, or an empty list when key does
not exist.
*Examples
redis>
HSET myhash field1 "Hello"
(integer) 1redis> HSET myhash field2 "World"
(integer) 1redis> HVALS myhash
1) "Hello" 2) "World"