redis之Set(无序)类型常用方法总结

存--sadd key member [member ...]
取--SMEMBERS key

  1. sadd key member [member ...] 向集合添加一个或多个成员

    127.0.0.1:6379> sadd lt zhangsan lishi wangwu
    
(integer) 3
    
127.0.0.1:6379> smembers lt
    
1) "wangwu"
    
2) "lishi"
    
3) "zhangsan"

  2. smembers key 获取一个key对应的集合元素

    127.0.0.1:6379> sadd lt zhangsan lishi wangwu
    
(integer) 3
    
127.0.0.1:6379> smembers lt
    
1) "wangwu"
    
2) "lishi"
    
3) "zhangsan"

  3. scard key 获取集合的成员数

    127.0.0.1:6379> sadd lt zhangsan lishi wangwu
    
(integer) 3
    
127.0.0.1:6379> smembers lt
    
1) "wangwu"
    
2) "lishi"
    
3) "zhangsan"
    
127.0.0.1:6379> scard lt
    
(integer) 3

  4. sdiff key1 [key2] 返回给定所有集合的差集

    127.0.0.1:6379> sadd lt zhangsan lishi wangwu
    
(integer) 3
    
127.0.0.1:6379> smembers lt
    
1) "wangwu"
    
2) "lishi"
    
3) "zhangsan"
    
127.0.0.1:6379> scard lt
    
(integer) 3
    
127.0.0.1:6379> sadd plf lishi wangwu jia yi
    
(integer) 4
    
127.0.0.1:6379> SDIFF plf lt
    
1) "yi"
    
2) "jia"
    
127.0.0.1:6379> SDIFF lt plf
    
1) "zhangsan"

  5. SDIFFSTORE destination key1 [key2] 返回给定所有集合的差集并存储在 destination 中

    redis 127.0.0.1:6379> SADD myset "hello"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset "foo"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset "bar"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset2 "hello"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset2 "world"
    
(integer) 1
    
redis 127.0.0.1:6379> SDIFFSTORE destset myset myset2
    
(integer) 2
    
redis 127.0.0.1:6379> SMEMBERS destset
    
1) "foo"
    
2) "bar"

  6. SINTER key1 [key2] 返回给定所有集合的交集

    127.0.0.1:6379> sadd lt zhangsan lishi wangwu
    
(integer) 3
    
127.0.0.1:6379> sadd plf lishi wangwu jia yi
    
(integer) 4
    
127.0.0.1:6379> sinter plf lt
    
1) "wangwu"
    
2) "lishi"

  7. SINTERSTORE destination key1 [key2] 返回给定所有集合的交集并存储在 destination 中

    redis 127.0.0.1:6379> SADD myset1 "hello"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset1 "foo"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset1 "bar"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset2 "hello"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset2 "world"
    
(integer) 1
    
redis 127.0.0.1:6379> SINTERSTORE myset myset1 myset2
    
(integer) 1
    
redis 127.0.0.1:6379> SMEMBERS myset
    
1) "hello"

  8. SISMEMBER key member 判断 member 元素是否是集合 key 的成员

    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

  9. SMEMBERS key 返回集合中的所有成员

    redis 127.0.0.1:6379> SADD myset1 "hello"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset1 "world"
    
(integer) 1
    
redis 127.0.0.1:6379> SMEMBERS myset1
    
1) "World"
    
2) "Hello"

  10. SMOVE source destination member 将 member 元素从 source 集合移动到 destination 集合

    redis 127.0.0.1:6379> SADD myset1 "hello"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset1 "world"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset1 "bar"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset2 "foo"
    
(integer) 1
    
redis 127.0.0.1:6379> SMOVE myset1 myset2 "bar"
    
(integer) 1
    
redis 127.0.0.1:6379> SMEMBERS myset1
    
1) "World"
    
2) "Hello"
    
redis 127.0.0.1:6379> SMEMBERS myset2
    
1) "foo"
    
2) "bar"

  11. SPOP key 移除并返回集合中的一个随机元素

    redis> SADD myset "one"
    
(integer) 1
    
redis> SADD myset "two"
    
(integer) 1
    
redis> SADD myset "three"
    
(integer) 1
    
redis> SPOP myset
    
"one"
    
redis> SMEMBERS myset
    
1) "three"
    
2) "two"
    
redis> SADD myset "four"
    
(integer) 1
    
redis> SADD myset "five"
    
(integer) 1
    
redis> SPOP myset 3
    
1) "five"
    
2) "four"
    
3) "two"
    
redis> SMEMBERS myset
    
1) "three"
    
redis>

  12. SRANDMEMBER key [count] 返回集合中一个或多个随机数

    redis 127.0.0.1:6379> SADD myset1 "hello"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset1 "world"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset1 "bar"
    
(integer) 1
    
redis 127.0.0.1:6379> SRANDMEMBER myset1
    
"bar"
    
redis 127.0.0.1:6379> SRANDMEMBER myset1 2
    
1) "Hello"
    
2) "world"

  13. SREM key member1 [member2] 移除集合中一个或多个成员

    redis 127.0.0.1:6379> SADD myset1 "hello"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset1 "world"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset1 "bar"
    
(integer) 1
    
redis 127.0.0.1:6379> SREM myset1 "hello"
    
(integer) 1
    
redis 127.0.0.1:6379> SREM myset1 "foo"
    
(integer) 0
    
redis 127.0.0.1:6379> SMEMBERS myset1
    
1) "bar"
    
2) "world"

  14. SUNION key1 [key2] 返回所有给定集合的并集

    redis> SADD key1 "a"
    
(integer) 1
    
redis> SADD key1 "b"
    
(integer) 1
    
redis> SADD key1 "c"
    
(integer) 1
    
redis> SADD key2 "c"
    
(integer) 1
    
redis> SADD key2 "d"
    
(integer) 1
    
redis> SADD key2 "e"
    
(integer) 1
    
redis> SUNION key1 key2
    
1) "a"
    
2) "c"
    
3) "b"
    
4) "e"
    
5) "d"
    
redis>

  15. SUNIONSTORE destination key1 [key2]所有给定集合的并集存储在 destination 集合中

    redis 127.0.0.1:6379> SADD myset1 "hello"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset1 "world"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset1 "bar"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset2 "hello"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset2 "bar"
    
(integer) 1
    
redis 127.0.0.1:6379> SUNIONSTORE myset myset1 myset2
    
(integer) 1
    
redis 127.0.0.1:6379> SMEMBERS myset
    
1) "bar"
    
2) "world"
    
3) "hello"
    
4) "foo"

  16. SSCAN key cursor [MATCH pattern] [COUNT count] 迭代集合中的元素

    redis 127.0.0.1:6379> SADD myset1 "hello"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset1 "hi"
    
(integer) 1
    
redis 127.0.0.1:6379> SADD myset1 "bar"
    
(integer) 1
    
redis 127.0.0.1:6379> sscan myset1 0 match h*
    
1) "0"
    
2) 1) "hello"
    
   2) "h1"

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