srandmember

srandmember(set random member) 从集合中随机获取一个或多个元素

127.0.0.1:6379> smembers testSet
 1) "e"
 2) "5"
 3) "x"
 4) "r"
 5) "q"
 6) "z"
 7) "qy"
 8) "b"
 9) "t"
10) "w"
11) "sdf"
12) "l"
13) "qw"
14) "qu"
15) "d"
16) "n"
17) "qe"
18) "f"
19) "1"
127.0.0.1:6379> srandmember testSet 3
1) "d"
2) "x"
3) "1"
127.0.0.1:6379> srandmember testSet 3
1) "qw"
2) "qu"
3) "f"