Redis第8️⃣课Zset

有序集合机构图

命令	解释
zadd	~ key [NX|XX] [CH] [INCR] score member [score member ...] [score]：分值，其大小用以排序，可以重复。 [NX] : if not exist ; [XX] : if exist
zrem	~ key member [member ...]
zscore	~ key member (获取元素的score)
zrange	~ key start stop [WITHSCORES] （按下标获取元素内容） ~ key 0 -1 获取所有的元素 ~ key 0 -1 withsocres 获取所有的元素和分值
zrangebylex	~ key min max [LIMIT offset count] 通过字典区间返回有序集合的成员
zrevrange	~ key start stop [WITHSCORES]  逆向排序zrange
zincrby	~ key increment member（增加或减少元素的分数）
zcard	~ key  |  返回元素的总个数
zrank	~ key element（获取元素的下标）
zrevrank	~ key member   逆向排序zrank
zcount	~ key minScore maxScore（获取分值闭区间中元素的个数）
zlexcount	~ key min max 计算指定字典区间内成员数量
zremrangebyrank	~ key start stop 删除指定排名内的升序元素
zremrangebyscore	~ key start stop 删除指定分值内的升序元素
zremrangebylex	~ key min max 移除给定的字典区间的所有成员
zrangebyscore	~ key min max [WITHSCORES] [LIMIT offset count]
zrevrangebyscore	~ key max min [WITHSCORES] [LIMIT offset count]
zinterstore 并集	~ destination numkeys key [key ...] [WEIGHTS weight] [AGGREGATE SUM|MIN|MAX]
zunionstore 交集	~ destination numkeys key [key ...] [WEIGHTS weight] [AGGREGATE SUM|MIN|MAX]
zscan	~ key cursor [MATCH pattern] [COUNT count] 迭代有序集合中的元素（包括元素成员和元素分值）

127.0.0.1:6379> zadd zset01 1 hello 2 world 5 worldhello 4 helloworld
(integer) 4
127.0.0.1:6379> zrange zset01 1 10
1) "world"
2) "helloworld"
3) "worldhello"
127.0.0.1:6379> zrange zset01 0 5 
1) "hello"
2) "world"
3) "helloworld"
4) "worldhello"
127.0.0.1:6379> zrange zset01 0 4
1) "hello"
2) "world"
3) "helloworld"
4) "worldhello"
127.0.0.1:6379> zrange zset01 0 3
1) "hello"
2) "world"
3) "helloworld"
4) "worldhello"
127.0.0.1:6379> zscore zset0 helloworld
(nil)
127.0.0.1:6379> zscore zset01 helloworld
"4"
127.0.0.1:6379> zrem zset01 world hello
(integer) 2
127.0.0.1:6379> zrange zset01 0 5
1) "helloworld"
2) "worldhello"
127.0.0.1:6379> zscore zset01 helloworld
"4"
127.0.0.1:6379> zscore zset01 worldhello
"5"
127.0.0.1:6379> zincrby zset01 10 helloworld
"14"
127.0.0.1:6379> zscore zset01 helloworld
"14"
127.0.0.1:6379> zrange zset01 0 3
1) "worldhello"
2) "helloworld"
127.0.0.1:6379> zcard zset01
(integer) 2
127.0.0.1:6379> zrank zset01 helloworld
(integer) 1
127.0.0.1:6379> zrank zset01 worldhello
(integer) 0
127.0.0.1:6379> zrange zset01 0 -1
1) "worldhello"
2) "helloworld"
127.0.0.1:6379> zadd zset01 nx 10 apple 29 banana 7 orange
(integer) 3
127.0.0.1:6379> zrange zset01 0 -1 withscores
 1) "worldhello"
 2) "5"
 3) "orange"
 4) "7"
 5) "apple"
 6) "10"
 7) "helloworld"
 8) "14"
 9) "banana"
10) "29"
127.0.0.1:6379> zcount zset01 10 20
(integer) 2
127.0.0.1:6379> zcount zset01 10 14
(integer) 2
127.0.0.1:6379> zcount zset01 10 13
(integer) 1
127.0.0.1:6379> zrangebyscore zset01 0 30 withscores limit 0 2
1) "worldhello"
2) "5"
3) "orange"
4) "7"
127.0.0.1:6379> zrangebyscore zset01 0 30 withscores 
 1) "worldhello"
 2) "5"
 3) "orange"
 4) "7"
 5) "apple"
 6) "10"
 7) "helloworld"
 8) "14"
 9) "banana"
10) "29"
127.0.0.1:6379> zrangebyscore zset01 0 30 
1) "worldhello"
2) "orange"
3) "apple"
4) "helloworld"
5) "banana"
127.0.0.1:6379> zremrangebyrank zset01 0 1
(integer) 2
127.0.0.1:6379> zrange zset01 0 -1
1) "apple"
2) "helloworld"
3) "banana"
127.0.0.1:6379> zremrangebyscore zset01 10 14
(integer) 2
127.0.0.1:6379> zrange zset01 0 -1
1) "banana"

zset实战示例