redis entry (data type)

• type of data

1) 字符串类型 string
2) 哈希类型 hash：　　　　　 map
3) 列表类型 list：　　　　　 linkedlist格式。支持重复元素
4) 集合类型 set：　　　　　　不允许重复元素
5) 有序集合类型 sortedset：　不允许重复元素，且元素有顺序

---

1)string

127.0.0.1:6379> set uname fff
OK
127.0.0.1:6379> get uname
"fff"
127.0.0.1:6379> del uname
(integer) 1
127.0.0.1:6379> keys *
(empty list or set)

2)hash

127.0.0.1:6379> hset mhash username zhangsan
(integer) 1
127.0.0.1:6379> hset mhash password 123
(integer) 1
127.0.0.1:6379> hget mhash username
"zhangsan"
127.0.0.1:6379> hgetall mhash
1) "username"
2) "zhangsan"
3) "password"
4) "123"
127.0.0.1:6379> hdel mhash password
(integer) 1
127.0.0.1:6379> hgetall mhash
1) "username"
2) "zhangsan"

3)list

127.0 . 0.1 : 6379 > LPUSH Room A 
(Integer) . 1 
127.0 . 0.1 : 6379 > LPUSH Room B 
(Integer) 2 
127.0 . 0.1 : 6379 > RPUSH Room C 
(Integer) . 3 
127.0 . 0.1 : 6379 > Lrange Room 0 - . 1　　0-1 can display all, if the 13 second from left to right to show the fourth
 . 1 ) " B " 
2 ) " A "
3) "c"
127.0.0.1:6379> lpush room d
(integer) 4
127.0.0.1:6379> lrange room 0 -1
1) "d"
2) "b"
3) "a"
4) "c"
127.0.0.1:6379> rpop room
"c"
127.0.0.1:6379> lrange room 0 -1
1) "d"
2) "b"
3) "a"

4)set

127.0.0.1:6379> sadd fruits apple
(integer) 1
127.0.0.1:6379> sadd fruits apple
(integer) 0
127.0.0.1:6379> sadd fruits pear
(integer) 1
127.0.0.1:6379> smembers fruits
1) "pear"
2) "apple"
127.0.0.1:6379> srem fruits pear
(integer) 1
127.0.0.1:6379> smembers fruits
1) "apple"

5)sortedset

127.0.0.1:6379> zadd test 46 hong
(integer) 1
127.0.0.1:6379> zadd test 44 li
(integer) 1
127.0.0.1:6379> zadd test 60 zhang
(integer) 1
127.0.0.1:6379> zrange test 0 -1
1) "li"
2) "hong"
3) "zhang"
127.0.0.1:6379> zrem test hong
(integer) 1
127.0.0.1:6379> zrange test 0 -1
1) "li"
2) "zhang"

Spoken instructions

127.0.0.1:6379> keys *
1) "test"
2) "fruits"
3) "room"
4) "mhash"
127.0.0.1:6379> type fruits  　　获取类型
set
127.0.0.1:6379> type test
zset
127.0.0.1:6379> del mhash
(integer) 1
127.0.0.1:6379> keys *
1) "test"
2) "fruits"
3) "room"