Redis Sismember command
Redis Sismember command determines whether the element is a member of a member of the collection.
grammar
redis Sismember basic command syntax is as follows:
redis 127.0.0.1:6379> SISMEMBER KEY VALUE
Available versions
> = 1.0.0
return value
If the member is a member of a set of elements, returns 1. If the member is not a member of collection element, or key does not exist, 0 is returned.
Examples
redis 127.0.0.1:6379> SADD myset1 "hello" (integer) 1 redis 127.0.0.1:6379> SISMEMBER myset1 "hello" (integer) 1 redis 127.0.0.1:6379> SISMEMBER myset1 "world" (integer) 0