redis | zset命令

zset

zset命令详解

• 设置

# ZADD key score member [score member ...]  将所有指定成员添加到键为key有序集合，score是权重
127.0.0.1:6379> ZADD sortset 5 for 4 you 3 love 2 hello 10 al
(integer) 5

• 获取

# ZRANGE key start stop [WITHSCORES]  返回指定范围内的元素
127.0.0.1:6379> ZRANGE sortset 0 -1
1) "hello"
2) "love"
3) "you"
4) "for"
5) "al"
127.0.0.1:6379> ZRANGE sortset 0 -1 withscores
 1) "hello"
 2) "2"
 3) "love"
 4) "3"
 5) "you"
 6) "4"
 7) "for"
 8) "5"
 9) "al"
10) "10"

# ZCARD key  返回元素个数
127.0.0.1:6379> ZCARD sortset
(integer) 5

# ZCOUNT key min max  指定score范围的元素个数。
127.0.0.1:6379> ZCOUNT sortset 1 5
(integer) 4

# ZSCORE key member  返回有序集key中，成员member的score值
127.0.0.1:6379> ZSCORE sortset love
"3"

• 排序

# ZRANGEBYSCORE key min max [WITHSCORES] [LIMIT offset count] 返回有序集合中指定分数区间内的成员，分数由低到高排序。
127.0.0.1:6379> ZRANGEBYSCORE sortset -inf +inf
1) "hello"
2) "love"
3) "you"
4) "for"
5) "al"

# ZREVRANGEBYSCORE key max min [WITHSCORES] [LIMIT offset count] 返回有序集合中指定分数区间内的成员，分数由高到低排序。
127.0.0.1:6379> ZREVRANGEBYSCORE sortset +inf -inf
1) "al"
2) "for"
3) "you"
4) "love"
5) "hello"

• 删除

# ZREM key member [member ...]  删除多个成员