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SRANDMEMBER

Returns one or more random elements from the set stored at key.

Syntax​

SRANDMEMBER key [count]

Details​

  • Available since: 1.0.0
  • Time complexity: Without the count argument, O(1). With the count argument, O(N) where N is the absolute value of the count.
  • ACL categories: @read, @set, @fast

Example​

Assume we have a set called myset with members "member1", "member2", and "member3":

SADD myset "member1" "member2" "member3"

Now, let's retrieve a random element from myset:

SRANDMEMBER myset

This might output something like:

"member1"

Now, let's retrieve 2 random elements from myset:

SRANDMEMBER myset 2

This might output something like:

1) "member3"
2) "member2"

RESP2/RESP3 Reply​

Bulk string reply: the random element(s), or an array of elements when count is specified and positive. If the key does not exist, nil is returned.