ZCARD key : Get the cardinality of the set

Syntax

ZCARD key

    Returns the number of elements in the set.

127.0.0.1:6379> zadd city 1.5 Bombay 0.9 Hyderabad 2.3 Vijayawada 3.2 Delhi 
(integer) 4 
127.0.0.1:6379> zcard city 
(integer) 4 

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