HLEN

Syntax

1. HLEN key

Time complexity: O(1)

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

1. dragonfly> HSET myhash field1 "Hello"
2. (integer) 1
3. dragonfly> HSET myhash field2 "World"
4. (integer) 1
5. dragonfly> HLEN myhash
6. (integer) 2