Redis之zset類型及操作

發(fā)布時間：2020-08-13 14:44:17 來源：ITPUB博客閱讀：156 作者：stonebox1122 欄目：關系型數(shù)據(jù)庫

zset是string類型的有序集合

zadd：向名稱為key的zset中添加元素member，score用于排序。如果該元素存在，則更新其順序。
127.0.0.1:6379> zadd myzset 1 one
(integer) 1
127.0.0.1:6379> zadd myzset 2 two
(integer) 1
127.0.0.1:6379> zadd myzset 3 two
(integer) 0
127.0.0.1:6379> zrange myzset 0 -1 withscores
1) "one"
2) "1"
3) "two"
4) "3"

zrem：刪除名稱為key的zset中的元素member。
127.0.0.1:6379> zrange myzset 0 -1 withscores
1) "one"
2) "1"
3) "two"
4) "3"
127.0.0.1:6379> zrem myzset two
(integer) 1
127.0.0.1:6379> zrange myzset 0 -1 withscores
1) "one"
2) "1"

zincrby：如果在名稱為key的zset中已經存在元素member，則該元素的score增加increment，否則向該集合中添加該元素，其score的值為increment。
127.0.0.1:6379> zadd myzset2 1 one
(integer) 1
127.0.0.1:6379> zadd myzset2 2 two
(integer) 1
127.0.0.1:6379> zrange myzset2 0 -1 withscores
1) "one"
2) "1"
3) "two"
4) "2"
127.0.0.1:6379> zincrby myzset2 2 one
"3"
127.0.0.1:6379> zrange myzset2 0 -1 withscores
1) "two"
2) "2"
3) "one"
4) "3"

zrank：返回名稱為key的zset中member元素的排名（按score從小到大排序）即下標。
127.0.0.1:6379> zadd myzset3 1 one
(integer) 1
127.0.0.1:6379> zadd myzset3 2 two
(integer) 1
127.0.0.1:6379> zadd myzset3 3 three
(integer) 1
127.0.0.1:6379> zadd myzset3 5 five
(integer) 1
127.0.0.1:6379> zrange myzset3 0 -1 withscores
1) "one"
2) "1"
3) "two"
4) "2"
5) "three"
6) "3"
7) "five"
8) "5"
127.0.0.1:6379> zrank myzset3 two
(integer) 1
127.0.0.1:6379> zrank myzset3 three
(integer) 2

zrevrank：返回名稱為key的zset中member元素的排名（按score從大到小排序）即下標
127.0.0.1:6379> zrange myzset3 0 -1 withscores
1) "one"
2) "1"
3) "two"
4) "2"
5) "three"
6) "3"
7) "five"
8) "5"
127.0.0.1:6379> zrevrank myzset3 five
(integer) 0

zrevrange：
127.0.0.1:6379> zrange myzset3 0 -1 withscores
1) "one"
2) "1"
3) "two"
4) "2"
5) "three"
6) "3"
7) "five"
8) "5"
127.0.0.1:6379> zrevrange myzset3 0 -1 withscores
1) "five"
2) "5"
3) "three"
4) "3"
5) "two"
6) "2"
7) "one"
8) "1"

zrangebyscore：
127.0.0.1:6379> zrangebyscore myzset3 2 3 withscores
1) "two"
2) "2"
3) "three"
4) "3"

zcount：
127.0.0.1:6379> zrange myzset3 0 -1 withscores
1) "one"
2) "1"
3) "two"
4) "2"
5) "three"
6) "3"
7) "five"
8) "5"
127.0.0.1:6379> zcount myzset3 2 3
(integer) 2

zcard：
127.0.0.1:6379> zrange myzset3 0 -1 withscores
1) "one"
2) "1"
3) "two"
4) "2"
5) "three"
6) "3"
7) "five"
8) "5"
127.0.0.1:6379> zcard myzset3
(integer) 4

zremrangebyrank：刪除集合中排名在給定區(qū)間的元素。
127.0.0.1:6379> zrange myzset3 0 -1 withscores
1) "one"
2) "1"
3) "two"
4) "2"
5) "three"
6) "3"
7) "five"
8) "5"
127.0.0.1:6379> zremrangebyrank myzset3 1 1
(integer) 1
127.0.0.1:6379> zrange myzset3 0 -1 withscores
1) "one"
2) "1"
3) "three"
4) "3"
5) "five"
6) "5"

zremrangbyscore：
127.0.0.1:6379> zrange myzset3 0 -1 withscores
1) "one"
2) "1"
3) "three"
4) "3"
5) "five"
6) "5"
127.0.0.1:6379> zremrangebyscore myzset3 4 5
(integer) 1
127.0.0.1:6379> zrange myzset3 0 -1 withscores
1) "one"
2) "1"
3) "three"
4) "3"

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