Redis Sorted sets

Title: Redis Sorted sets
date: 2015-05-05 13:08:36 +0800
comments: true
category: Redis
tags: redis,linux

Redis Sorted-Set

zadd

ZADD key score member [score member ...]
e.g.
    zadd myzset 1 one
# zrange myzset 0 -1 withscores

zrem

ZREM key member [member ...]
e.g.
    zrem myzset one

zrange

ZRANGE key start stop [WITHSCORES]
e.g.
    zrange myzset 0 -1 withscores

zrevrange

ZREVRANGE key start stop [WITHSCORES]
返回名称为key的zset(按score从大到小排序)中的index从start到end的所有元素

zincrby

ZINCRBY key increment member
如果在名称为key的zset中已经存在元素member，则该元素的score增加increment;否则向集合中添加该元素，其score的值为increment
e.g.
    zincrby key 3 one
    zincrby key 1 five
    127.0.0.1:6379[8]> ZRANGE myzset 0 -1 withscores
     1) "five"
     2) "1"
     3) "two"
     4) "2"
     5) "three"
     6) "3"
     7) "one"
     8) "4"
     9) "four"
    10) "7"

zrank

ZRANK key member
返回名称为key的zset中member元素的排名(按score从小到大排序)即下标
e.g.
    127.0.0.1:6379[8]> ZRANGE myzset 0 -1 withscores
     1) "five"
     2) "1"
     3) "two"
     4) "2"
     5) "three"
     6) "3"
     7) "one"
     8) "4"
     9) "four"
    10) "7"
    127.0.0.1:6379[8]> zrank myzset five
    (integer) 0
    127.0.0.1:6379[8]> zrank myzset one
    (integer) 3

zrevrank

ZREVRANK key member
返回名称为key的zset中member元素的排名(按score从大到小排序)即下标

zrangebyscore

ZRANGEBYSCORE key min max [WITHSCORES] [LIMIT offset count]
e.g.
    zrangebysocre myzset 2 4 withscores

zcount

ZCOUNT key min max
返回集合中score在给定区间的数量
e.g.
    zcount key

zcard

集合个数
ZCARD key

zscore

返回给定元素对应的score
ZSCORE key member

zremrangebyrank

zremrangebyscore