ZCARD

Since 1.1.0Sorted sets

Syntax

ZCARD key
  • Flags: fast, readonly
  • ACL categories: @fast, @read, @sortedset
  • Arity: 2

Returns the number of members of the sorted set at key.

Reply

  • The count; 0 if the key does not exist.

Examples

> ZADD z 1 a 2 b
(integer) 2
> ZCARD z
(integer) 2