Redis学习笔记（六）Zset操作

Zset基本命令操作

1.zadd key index val

127.0.0.1:6379> zadd myset 1 one # 添加值
(integer) 1
127.0.0.1:6379> zadd myset 2 two 3 three # 添加多值
(integer) 2
127.0.0.1:6379> ZRANGE myset 0 -1 # 范围查看
1) "one"
2) "two"
3) "three"
127.0.0.1:6379>


2.zrangebyscore key minVal maxVal [withscores]

127.0.0.1:6379> zadd money 100 A
(integer) 1
127.0.0.1:6379> zadd money 275 B
(integer) 1
127.0.0.1:6379> zadd money 50 C
(integer) 1
127.0.0.1:6379> zadd money 325 D
(integer) 1
127.0.0.1:6379> ZRANGEBYSCORE money -inf &＃43;inf # 升序排序
1) "C"
2) "A"
3) "B"
4) "D"
127.0.0.1:6379> ZRANGEBYSCORE money -inf &＃43;inf withscores # 升序排序并且附带成绩
1) "C"
2) "50"
3) "A"
4) "100"
5) "B"
6) "275"
7) "D"
8) "325"
127.0.0.1:6379>


3.zrem key field

127.0.0.1:6379> ZRANGE myset 0 -1
1) "A"
2) "B"
3) "C"
4) "D"
127.0.0.1:6379> zrem myset A # 移除指定元素A
(integer) 1
127.0.0.1:6379> ZRANGE myset 0 -1
1) "B"
2) "C"
3) "D"
127.0.0.1:6379>


4.zcount key startIndex endIndex

127.0.0.1:6379> ZCOUNT myset 0 5 # 统计指定区间有多少个元素
(integer) 3
127.0.0.1:6379>


5.ZREVRANGE key minVal maxVal

127.0.0.1:6379> ZREVRANGE myset 0 -1
1) "D"
2) "C"
3) "B"
127.0.0.1:6379> ZREVRANGE myset 1 2
1) "C"
2) "B"


总结&＃xff0c;Zset比Set操作多了排序功能&＃xff0c;对于Zset使用&＃xff0c;应用场景也是十分多的&＃xff0c;因为有排序功能&＃xff0c;所有在排行榜&＃xff0c;粉丝数&＃xff0c;日收榜都是可以通过它来完成实现的