HLEN

Returns the number of fields in a hash.

Usage: HLEN key
Complexity: O(1)
Since: 2.0.0
ACL Categories: @fast, @hash, @read
Command flags: READONLY, FAST

Returns the number of fields contained in the hash stored at key.

Examples

127.0.0.1:6379> HSET myhash field1 "Hello"
(integer) 1
127.0.0.1:6379> HSET myhash field2 "World"
(integer) 1
127.0.0.1:6379> HLEN myhash
(integer) 2

Replies

RESP2

Integer reply: the number of fields in the hash, or 0 when the key does not exist.

RESP3

Integer reply: the number of fields in the hash, or 0 when the key does not exist.