十二、redis操作类型(下)

集合（Sets）类型

Redis能够将一系列不重复的值存储成一个集合

redis 127.0.0.1:6379> SADD birds crow

(integer) 1

redis 127.0.0.1:6379> SADD birds pigeon

(integer) 1

redis 127.0.0.1:6379> SADD birds bat

(integer) 1

redis 127.0.0.1:6379> SADD mammals dog

(integer) 1

redis 127.0.0.1:6379> SADD mammals cat

(integer) 1

redis 127.0.0.1:6379> SADD mammals bat

(integer) 1

redis 127.0.0.1:6379> SMEMBERS birds

1) "bat"

2) "crow"

3) "pigeon"

redis 127.0.0.1:6379> SMEMBERS mammals

1) "bat"

2) "cat"

3) "dog“

Sets结构也支持相应的修改操作

redis 127.0.0.1:6379> SREM mammals cat

(integer) 1

redis 127.0.0.1:6379> SMEMBERS mammals

1) "bat"

2) "dog"

redis 127.0.0.1:6379> SADD mammals human

(integer) 1

redis 127.0.0.1:6379> SMEMBERS mammals

1) "bat"

2) "human"

3) "dog”

Redis还支持对集合的子交并补等操作

redis 127.0.0.1:6379> SINTER birdsmammals (交集)

1) "bat"

redis 127.0.0.1:6379> SUNION birdsmammals (合集)

1) "crow"

2) "bat"

3) "human"

4) "pigeon"

5) "dog"

redis 127.0.0.1:6379> SDIFF birdsmammals (birds补集)

1) "crow"

2) "pigeon"

 

有序集合（Sorted Sets）类型

Sorted Sets和Sets结构相似，不同的是存在SortedSets中的数据会有一个score属性，并会在写入时就按这个score排好序。

redis 127.0.0.1:6379> ZADD days 0 mon

(integer) 1

redis 127.0.0.1:6379> ZADD days 1 tue

(integer) 1

redis 127.0.0.1:6379> ZADD days 2 wed

(integer) 1

redis 127.0.0.1:6379> ZADD days 3 thu

(integer) 1

redis 127.0.0.1:6379> ZADD days 4 fri

(integer) 1

redis 127.0.0.1:6379> ZADD days 5 sat

(integer) 1

redis 127.0.0.1:6379> ZADD days 6 sun

(integer) 1

redis 127.0.0.1:6379> ZCARD days

(integer) 7

redis 127.0.0.1:6379> ZRANGE days 0 6

1) "mon"

2) "tue"

3) "wed"

4) "thu"

5) "fri"

6) "sat"

7) "sun"

redis 127.0.0.1:6379> ZSCORE days sat

"5"

redis 127.0.0.1:6379> ZCOUNT days 3 6

(integer) 4

redis 127.0.0.1:6379> ZRANGEBYSCORE days3 6

1) "thu"

2) "fri"

3) "sat"

4) "sun"

Hash类型

Redis能够存储key对多个属性的数据（比如user1.unameuser1.passwd）

redis 127.0.0.1:6379> HMSET student nameGanesh age 30 sex Male

OK

redis 127.0.0.1:6379> HKEYS student

1) "name"

2) "age"

3) "sex"

redis 127.0.0.1:6379> HVALS student

1) "Ganesh"

2) "30"

3) "Male"

redis 127.0.0.1:6379> HGETALL student

1) "name"

2) "Ganesh"

3) "age"

4) "30"

5) "sex"

6) "Male"

redis 127.0.0.1:6379> HDEL student sex

(integer) 1

redis 127.0.0.1:6379> HGETALL student

1) "name"

2) "Ganesh"

3) "age"

4) "30"

Hash数据结构能够批量修改和获取

redis 127.0.0.1:6379> HMSET kid nameAkshi age 2 sex Female

OK

redis 127.0.0.1:6379> HMGET kid name agesex

1) "Akshi"

2) "2"

3) "Female"