Get the value related to the specified key of a hashmap
name - The name of the hashmapkey - The key of the key-value pair in the hashmapValue reply.
Return the value to the key, if the key does not exists, return not_found Status Code.
ssdb 127.0.0.1:8888> hset h k v
ok
(0.000 sec)
ssdb 127.0.0.1:8888> hget h k
v
(0.000 sec)
ssdb 127.0.0.1:8888> hdel h k
1
(0.000 sec)
ssdb 127.0.0.1:8888> hget h k
not_found
(0.000 sec)
ssdb 127.0.0.1:8888>