10-Redis - Sorted Set（ZSet）类型

set的用法：sadd key v1 v2 v3...

zset的用法：zadd key KV键值对

取范围：ZRANG key   0 -1 范围开始 范围结束

不包含等号

127.0.0.1:6379> ZRANGE zset01 0 -1 withscores
 1) "v1"
 2) "60"
 3) "v2"
 4) "70"
 5) "v3"
 6) "80"
 7) "v4"
 8) "90"
 9) "v5"
10) "100"
127.0.0.1:6379> ZRANGEBYSCORE zset01 60 90
1) "v1"
2) "v2"
3) "v3"
4) "v4"
127.0.0.1:6379> ZRANGEBYSCORE zset01 60 (90
1) "v1"
2) "v2"
3) "v3"
127.0.0.1:6379> ZRANGEBYSCORE zset01 (60 (90
1) "v2"
2) "v3"
127.0.0.1:6379> 

limit，和sql的用法一样，分页

limit 查询结果的截取开始索引 查询结果的截取结束索引

127.0.0.1:6379> ZRANGEBYSCORE zset01 60 90
1) "v1"
2) "v2"
3) "v3"
4) "v4"
127.0.0.1:6379> ZRANGEBYSCORE zset01 60 90 limit 2 2
1) "v3"
2) "v4"
127.0.0.1:6379> 

删除元素

127.0.0.1:6379> ZREM zset01 v5
(integer) 1
127.0.0.1:6379> ZRANGE zset01 0 -1 withscores
1) "v1"
2) "60"
3) "v2"
4) "70"
5) "v3"
6) "80"
7) "v4"
8) "90"
127.0.0.1:6379> 

统计个数

127.0.0.1:6379> ZRANGE zset01 0 -1 withscores
1) "v1"
2) "60"
3) "v2"
4) "70"
5) "v3"
6) "80"
7) "v4"
8) "90"
127.0.0.1:6379> ZCARD zset01
(integer) 4
127.0.0.1:6379> 

统计一定范围内的个数

127.0.0.1:6379> ZRANGE zset01 0 -1 withscores
1) "v1"
2) "60"
3) "v2"
4) "70"
5) "v3"
6) "80"
7) "v4"
8) "90"
127.0.0.1:6379> ZCOUNT zset01 60 80
(integer) 3
127.0.0.1:6379> 

 获取指定元素的下标

127.0.0.1:6379> ZRANGE zset01 0 -1 withscores
1) "v1"
2) "60"
3) "v2"
4) "70"
5) "v3"
6) "80"
7) "v4"
8) "90"
127.0.0.1:6379> ZRANK zset01 v3
(integer) 2
127.0.0.1:6379> 

 获取指定元素的值

127.0.0.1:6379> ZRANGE zset01 0 -1 withscores
1) "v1"
2) "60"
3) "v2"
4) "70"
5) "v3"
6) "80"
7) "v4"
8) "90"
127.0.0.1:6379> ZSCORE zset01 v4
"90"
127.0.0.1:6379> 

 逆序取下标

127.0.0.1:6379> ZRANGE zset01 0 -1 withscores
1) "v1"
2) "60"
3) "v2"
4) "70"
5) "v3"
6) "80"
7) "v4"
8) "90"
127.0.0.1:6379> ZREVRANK zset01 v3
(integer) 1
127.0.0.1:6379> 

 逆序输出

127.0.0.1:6379> ZRANGE zset01 0 -1
1) "v1"
2) "v2"
3) "v3"
4) "v4"
127.0.0.1:6379> ZREVRANGE zset01 0 -1
1) "v4"
2) "v3"
3) "v2"
4) "v1"
127.0.0.1:6379> 

 逆序输出的另外一种方式

127.0.0.1:6379> ZRANGEBYSCORE zset01 60 90
1) "v1"
2) "v2"
3) "v3"
4) "v4"
127.0.0.1:6379> ZREVRANGEBYSCORE zset01 90 60
1) "v4"
2) "v3"
3) "v2"
4) "v1"
127.0.0.1:6379>