Redis基础系列-0x006：Set

2024年2月9日 90次阅读 来源: followWinter

0x001 添加一个值

命令格式：

  • SADD key member [member1 member2 ...]
SADD goods apple banana

0x002 获取set的数量

命令格式：

  • SCARD key
127.0.0.1:6379> SCARD goods
(integer) 2

0x003判断是否是set的member

命令格式：

  • SISMEMBER key member [member1 member2 ...]
127.0.0.1:6379> SISMEMBER uid1 1
(integer) 1

0x004 获取set的所有member

命令格式：

  • SMEMBERS key
127.0.0.1:6379> SMEMBERS goods
1) "banana"
2) "apple"

0x005 随机弹出指定数量的元素

命令格式：

  • SPOP key
127.0.0.1:6379> SADD uid 1 2 3 4 5 6 7 
(integer) 7
127.0.0.1:6379> SPOP uid
"4"
127.0.0.1:6379> 
127.0.0.1:6379> SPOP uid
"7"
127.0.0.1:6379> SPOP uid 2
1) "2"
2) "6"

0x006 移除指定元素

命令格式：

  • SREM key member [member1 member2 ...]
127.0.0.1:6379> DEL uid
(integer) 1
127.0.0.1:6379> SADD uid 1 2 3 4 5 6 7 
(integer) 7
127.0.0.1:6379> SREM uid 1 2 3 4 
(integer) 4
127.0.0.1:6379> SMEMBERS uid
1) "5"
2) "6"
3) "7"

0x007 获取指定集合的并集

命令格式：

  • SUNION key member [member1 member2 ...]
127.0.0.1:6379> SADD uid1 1 2 3 4 5 6 
(integer) 6
127.0.0.1:6379> SADD uid2 3 4 5 6 7 8 
(integer) 6
127.0.0.1:6379> SUNION uid1 uid2
1) "1"
2) "2"
3) "3"
4) "4"
5) "5"
6) "6"
7) "7"
8) "8"

0x008 将指定集合的并集存储到新的set

命令格式：

  • SADD key member [member1 member2 ...]
127.0.0.1:6379> SUNIONSTORE  uid3 uid1 uid2
(integer) 8
127.0.0.1:6379> SMEMBERS uid3
1) "1"
2) "2"
3) "3"
4) "4"
5) "5"
6) "6"
7) "7"
8) "8"

0x009 返回指定集合的交集

命令格式：

  • SINTER key1 key2
127.0.0.1:6379> SINTER uid1 uid2
1) "3"
2) "4"
3) "5"
4) "6"

0x010 将指定集合的交集存到新的set

命令格式：

  • SINTERSTORE key1 [key2 key3 ...]
127.0.0.1:6379> SINTERSTORE uid3 uid1 uid2
(integer) 4
127.0.0.1:6379> SMEMBERS uid3
1) "3"
2) "4"
3) "5"
4) "6"

0x011 返回指定集合的差集

命令格式：

  • SDIFF key1 [key2 key3 ...]
127.0.0.1:6379> SDIFF uid1 uid2
1) "1"
2) "2"

0x012 将指定集合的差集存储到新的set

命令格式：

  • SDIFFSTORE key1 [key2 key3 ...]
127.0.0.1:6379> SDIFFSTORE uid3 uid1 uid2
(integer) 2
127.0.0.1:6379> SMEMBERS uid3
1) "1"
2) "2"
    原文作者：followWinter
    原文地址: https://segmentfault.com/a/1190000014894525
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