Redis核心数据结构-ZSet

静听山水2026-02-09 11:56

--- Sorted Set (ZSet): 有序集合 ---

每个元素带有一个 Score，按 Score 排序

1. 排行榜 (Leaderboard)

添加玩家分数

ZADD leaderboard 100 "PlayerA"

ZADD leaderboard 200 "PlayerB"

ZADD leaderboard 150 "PlayerC"

2. 查询排名

获取前 3 名 (分数从低到高)

ZRANGE leaderboard 0 2 withscores

获取前 3 名 (分数从高到低 - 常用)

ZREVRANGE leaderboard 0 2 withscores

结果: PlayerB(200), PlayerC(150), PlayerA(100)

3. 更新分数

PlayerA 得分增加了 50

ZINCRBY leaderboard 50 "PlayerA"

4. 按分数范围查询

查询分数在 100 到 200 之间的玩家

ZRANGEBYSCORE leaderboard 100 200

5. 获取特定玩家的排名 (从 0 开始)

ZREVRANK leaderboard "PlayerA"

bash 复制代码

127.0.0.1:6379> ZADD leaderboard 100 "PlayerA"
(integer) 1
127.0.0.1:6379> ZADD leaderboard 200 "PlayerB"
(integer) 1
127.0.0.1:6379> ZADD leaderboard 150 "PlayerC"
(integer) 1
127.0.0.1:6379> ZRANGE leaderboard 0 2 withscores
1) "PlayerA"
2) "100"
3) "PlayerC"
4) "150"
5) "PlayerB"
6) "200"
127.0.0.1:6379> ZREVRANGE leaderboard 0 2 withscores
1) "PlayerB"
2) "200"
3) "PlayerC"
4) "150"
5) "PlayerA"
6) "100"
127.0.0.1:6379> ZINCRBY leaderboard 50 "PlayerA"
"150"
127.0.0.1:6379> ZRANGEBYSCORE leaderboard 100 200
1) "PlayerA"
2) "PlayerC"
3) "PlayerB"
127.0.0.1:6379> ZREVRANK leaderboard "PlayerA"
(integer) 2