HLEN key
Available since: 2.0.0
Time complexity: O(1)
ACL categories:
@read
@hash
@fast
Returns the number of fields contained in the hash stored at key.
@return
@integer-reply: number of fields in the hash, or 0 when key does not exist.
@examples
redis> HSET myhash field1 "Hello"
TBD
redis> HSET myhash field2 "World"
TBD
redis> HLEN myhash