redis 五大数据类型的常用指令

STRING

192.168.1.66:6379> get k1
"v1"
192.168.1.66:6379> append k1 12345
(integer) 7
192.168.1.66:6379> get k1
"v112345"

append的使用

192.168.1.66:6379> STRLEN k1
(integer) 7

获取长度

192.168.1.66:6379> set k1 1
OK
192.168.1.66:6379> incr k1
(integer) 2
192.168.1.66:6379> incr k1
(integer) 3
192.168.1.66:6379> get k1
"3"
192.168.1.66:6379> type k1
string

incr 设置自增

192.168.1.66:6379> decr k1
(integer) 2
192.168.1.66:6379> decr k1
(integer) 1
192.168.1.66:6379> get k1
"1"

decr 自减

192.168.1.66:6379> get k1
"9"
192.168.1.66:6379> decrby k1 2
(integer) 7
192.168.1.66:6379> decrby k1 2
(integer) 5
192.168.1.66:6379> get k1
"5"

跨越式自减decrby

192.168.1.66:6379> get k1
"0123456"
192.168.1.66:6379> getrange k1 0 -1
"0123456"
192.168.1.66:6379> getrange k1 0 3
"0123"

getrange获取范围数据

192.168.1.66:6379> get k1
"0123456"
192.168.1.66:6379> setrange k1 0 xxx
(integer) 7
192.168.1.66:6379> get k1
"xxx3456"

setrange 设置内容

192.168.1.66:6379> setex k4 10 v4
OK
192.168.1.66:6379> ttl k4
(integer) 4
192.168.1.66:6379> ttl k4
(integer) 3
192.168.1.66:6379> ttl k4
(integer) 1
192.168.1.66:6379> ttl k4
(integer) -2

setex 设置key 同时设置存活周期

192.168.1.66:6379> setnx k1 v11
(integer) 0
192.168.1.66:6379> get k1 
"xxx3456"
192.168.1.66:6379> setnx k11 v11
(integer) 1
192.168.1.66:6379> get k11
"v11"

setnx 只有不存在的时候，才能设置

192.168.1.66:6379[1]> mset k1 v1 k2 v2 k3 v3 k4 v4
OK
192.168.1.66:6379[1]> keys *
1) "k3"
2) "k2"
3) "k4"
4) "k1"

mset 批量设置

192.168.1.66:6379[1]> keys *
1) "k3"
2) "k2"
3) "k4"
4) "k1"
192.168.1.66:6379[1]> msetnx k4 v4 k5 v5
(integer) 0
192.168.1.66:6379[1]> keys *
1) "k3"
2) "k2"
3) "k4"
4) "k1"

msetnx 只要有一个失败，全部失败

192.168.1.66:6379[1]> keys *
1) "k3"
2) "k2"
3) "k4"
4) "k1"
192.168.1.66:6379[1]> msetnx k4 v4 k5 v5
(integer) 0
192.168.1.66:6379[1]> keys *
1) "k3"
2) "k2"
3) "k4"
4) "k1"
192.168.1.66:6379[1]> msetnx  k5 v5 k6 v6
(integer) 1
192.168.1.66:6379[1]> keys *
1) "k3"
2) "k4"
3) "k5"
4) "k2"
5) "k6"
6) "k1"

msetnx 都不存在，才成功

LIST

192.168.1.66:6379> LPUSH list01 1 2 3 4 5
(integer) 5
192.168.1.66:6379> lrange list01 0 -1
1) "5"
2) "4"
3) "3"
4) "2"
5) "1"
192.168.1.66:6379> RPUSH list02 1 2 3 4 5
(integer) 5
192.168.1.66:6379> lrange list02 0 -1
1) "1"
2) "2"
3) "3"
4) "4"
5) "5"

先进先出队列（拉shi）

先进后出栈（喝多了，吐了）

192.168.1.66:6379> lrange list01 0 -1
1) "5"
2) "4"
3) "3"
4) "2"
5) "1"
192.168.1.66:6379> lpop list01
"5"
192.168.1.66:6379> lrange list01 0 -1
1) "4"
2) "3"
3) "2"
4) "1"

lpop 把左侧的先剔除了

老师语录：你自己敲一次，胜过听我讲十次。

192.168.1.66:6379> lrange list01 0 -1
1) "5"
2) "4"
3) "3"
4) "2"
5) "1"
192.168.1.66:6379> lpop list01
"5"
192.168.1.66:6379> lrange list01 0 -1
1) "4"
2) "3"
3) "2"
4) "1"
192.168.1.66:6379> RPOP list01
"1"
192.168.1.66:6379> lrange list01 0 -1
1) "4"
2) "3"
3) "2"
192.168.1.66:6379> LINDEX list01 2
"2"

LINDEX 获取特定的位置的数据

192.168.1.66:6379> lrange list01 0 -1
1) "4"
2) "3"
3) "2"
192.168.1.66:6379> llen list01
(integer) 3

llen 获取长度

192.168.1.66:6379> RPUSH list03 1 1 1 2 2 2 3 3 3 4 4 4 5 6 7
(integer) 15
192.168.1.66:6379> lrem list03 2 3
(integer) 2
192.168.1.66:6379> lrange list03 0 -1
 1) "1"
 2) "1"
 3) "1"
 4) "2"
 5) "2"
 6) "2"
 7) "3"
 8) "4"
 9) "4"
10) "4"
11) "5"
12) "6"
13) "7"

lrem 移除多个值

192.168.1.66:6379> lrange list03 0 -1
 1) "1"
 2) "1"
 3) "1"
 4) "2"
 5) "2"
 6) "2"
 7) "3"
 8) "4"
 9) "4"
10) "4"
11) "5"
12) "6"
13) "7"
192.168.1.66:6379> LTRIM list03 3 5
OK
192.168.1.66:6379> lrange list03 0 -1
1) "2"
2) "2"
3) "2"

LTRIM 从第几个开始，截取到第几个之后赋值给list

192.168.1.66:6379> lrange list01 0 -1
1) "4"
2) "3"
3) "2"
192.168.1.66:6379> lrange list02 0 -1
1) "1"
2) "2"
3) "3"
4) "4"
5) "5"
192.168.1.66:6379> RPOPLPUSH list01 list02
"2"
192.168.1.66:6379> lrange list02 0 -1
1) "2"
2) "1"
3) "2"
4) "3"
5) "4"
6) "5"

RPOPLPUSH 将某个值压入

192.168.1.66:6379> lrange list02 0 -1
1) "2"
2) "1"
3) "2"
4) "3"
5) "4"
6) "5"
192.168.1.66:6379> lset list02 0 0
OK
192.168.1.66:6379> lrange list02 0 -1
1) "0"
2) "1"
3) "2"
4) "3"
5) "4"
6) "5"

lset 设定特定位置的list值

192.168.1.66:6379> LINSERT list02 before 2 java
(integer) 7
192.168.1.66:6379> lrange list02 0 -1
1) "0"
2) "1"
3) "java"
4) "2"
5) "3"
6) "4"
7) "5"
192.168.1.66:6379> LINSERT list02 after 2 php
(integer) 8
192.168.1.66:6379> lrange list02 0 -1
1) "0"
2) "1"
3) "java"
4) "2"
5) "php"
6) "3"
7) "4"
8) "5"
192.168.1.66:6379> LINSERT list03 after 2 php
(integer) 4
192.168.1.66:6379> lrange list03 0 -1
1) "2"
2) "php"
3) "2"
4) "2"
192.168.1.66:6379> LINSERT list03 before 2 php
(integer) 5
192.168.1.66:6379> lrange list03 0 -1
1) "php"
2) "2"
3) "php"
4) "2"
5) "2"

LINSERT 在特定位置插入内容，默认查找出第一个作为参照。

SET

192.168.1.66:6379> sadd set01 1 1 2 2 3 3
(integer) 3
192.168.1.66:6379> SMEMBERS set01 
1) "1"
2) "2"
3) "3"

set 也是集合，但是不允许有重复的

192.168.1.66:6379> SISMEMBER set01 1
(integer) 1
192.168.1.66:6379> SISMEMBER set01 x
(integer) 0

sismember查看是否是成员

192.168.1.66:6379> SMEMBERS set01
1) "1"
2) "2"
3) "3"
192.168.1.66:6379> SCARD set01
(integer) 3

scard 查看集合中有多少个元素

192.168.1.66:6379> SMEMBERS set01
1) "1"
2) "2"
3) "3"
192.168.1.66:6379> SCARD set01
(integer) 3
192.168.1.66:6379> srem set01 3
(integer) 1
192.168.1.66:6379> SMEMBERS set01
1) "1"
2) "2"

srem 删除某个元素

192.168.1.66:6379> SMEMBERS set01
1) "1"
2) "2"
192.168.1.66:6379> sadd set01 1 2 3 4 5 6 7
(integer) 5
192.168.1.66:6379> SMEMBERS set01
1) "1"
2) "2"
3) "3"
4) "4"
5) "5"
6) "6"
7) "7"

set的好处就是自动去重，保证数据的唯一性

192.168.1.66:6379> SMEMBERS set01
1) "1"
2) "2"
3) "3"
4) "4"
5) "5"
6) "6"
7) "7"
192.168.1.66:6379> SRANDMEMBER set01 3
1) "6"
2) "7"
3) "2"
192.168.1.66:6379> SRANDMEMBER set01 3
1) "7"
2) "2"
3) "4"
192.168.1.66:6379> SRANDMEMBER set01 3
1) "3"
2) "7"
3) "1"
192.168.1.66:6379> SRANDMEMBER set01 3
1) "5"
2) "2"
3) "4"

SRANDMEMBER 随机出三个数字

192.168.1.66:6379> SMEMBERS set01
1) "1"
2) "2"
3) "3"
4) "4"
5) "5"
6) "6"
7) "7"
8) "8"
9) "9"
192.168.1.66:6379> spop set01 2
1) "4"
2) "3"
192.168.1.66:6379> spop set01 2
1) "5"
2) "6"
192.168.1.66:6379> spop set01 2
1) "8"
2) "9"
192.168.1.66:6379> SMEMBERS set01
1) "1"
2) "2"
3) "7"

spop 随机出栈，高并发，速度快

192.168.1.66:6379> SMEMBERS set01
1) "1"
2) "2"
3) "7"
192.168.1.66:6379> SMEMBERS set02
1) "z"
2) "y"
3) "x"
192.168.1.66:6379> smove set01 set02 1
(integer) 1
192.168.1.66:6379> SMEMBERS set01
1) "2"
2) "7"
192.168.1.66:6379> SMEMBERS set02
1) "z"
2) "y"
3) "x"
4) "1"

smove 移动值

192.168.1.66:6379> SMEMBERS set01 
1) "1"
2) "2"
3) "3"
4) "4"
5) "5"
192.168.1.66:6379> SMEMBERS set02 
1) "a"
2) "3"
3) "2"
4) "1"
5) "b"
192.168.1.66:6379> sdiff set01 set02
1) "4"
2) "5"
192.168.1.66:6379> sdiff set02 set01
1) "a"
2) "b"

sdiff 找出set01中比set02中多出的内容（差集）

192.168.1.66:6379> SMEMBERS set01 
1) "1"
2) "2"
3) "3"
4) "4"
5) "5"
192.168.1.66:6379> SMEMBERS set02 
1) "a"
2) "3"
3) "2"
4) "1"
5) "b"
192.168.1.66:6379> sdiff set01 set02
1) "4"
2) "5"
192.168.1.66:6379> sdiff set02 set01
1) "a"
2) "b"
192.168.1.66:6379> SINTER set01 set02
1) "1"
2) "2"
3) "3"
192.168.1.66:6379> SUNION set01 set02
1) "a"
2) "3"
3) "5"
4) "b"
5) "4"
6) "2"
7) "1"

SINTER 交集 SUNION 并集（去重）

万丈高楼平地起，肚子里要有货

学以致用，学在用前

Hash 哈希 （非常，及其重要，非常及其重要）

kv模式不变，但是v是一个键值对

192.168.1.66:6379> hset user id 11
(integer) 1
192.168.1.66:6379> hget user id
"11"
192.168.1.66:6379> keys *
1) "user"

hset hget基本使用

192.168.1.66:6379> hmset customer id 11 name li4 age 26
OK
192.168.1.66:6379> hmget customer id name age
1) "11"
2) "li4"
3) "26"

hmset hmget 的使用

192.168.1.66:6379> hgetall customer
1) "id"
2) "11"
3) "name"
4) "li4"
5) "age"
6) "26"

hgetall 获取全部的键值对数据

192.168.1.66:6379> hdel customer age
(integer) 1
192.168.1.66:6379> hgetall customer
1) "id"
2) "11"
3) "name"
4) "li4"

hdel 删除某个键值

192.168.1.66:6379> HLEN customer
(integer) 2
192.168.1.66:6379> HEXISTS customer id
(integer) 1
192.168.1.66:6379> HEXISTS customer email
(integer) 0

HLEN 查看长度，HEXISTS 查看是否存在

横向关联之后，其实发现没什么新技术，都是你抄我的，我抄你的

redis-cli -h 192.168.1.66 -a 123456

直接连接redis，密码也加入了，不需要再次密码验证了

192.168.1.66:6379> HKEYS customer
1) "id"
2) "name"
192.168.1.66:6379> HVALS customer
1) "11"
2) "li4"

HKEYS 获取共有多少个key，HVALS 获取值

192.168.1.66:6379> HVALS customer
1) "11"
2) "li4"
3) "18"
192.168.1.66:6379> HINCRBY customer age 2
(integer) 20
192.168.1.66:6379> HINCRBY customer age 2
(integer) 22
192.168.1.66:6379> HINCRBY customer age 2
(integer) 24
192.168.1.66:6379> HVALS customer
1) "11"
2) "li4"
3) "24"

HINCRBY 设置某个值增长

192.168.1.66:6379> hset customer score 92
(integer) 1
192.168.1.66:6379> HVALS customer
1) "11"
2) "li4"
3) "24"
4) "92"
192.168.1.66:6379> HINCRBYFLOAT customer score 0.5
"92.5"
192.168.1.66:6379> HVALS customer
1) "11"
2) "li4"
3) "24"
4) "92.5"

HINCRBYFLOAT 增加浮点数数值

ZSet（有序集合）

zset，在set的基础上加了一个score的值。

知识是基础，基础之上是业务，掌握知识，分析业务，开发项目。

192.168.1.66:6379> zadd zset01 60 v1 70 v2 80 v3 90 v4 100 v5
(integer) 5
192.168.1.66:6379> ZRANGE zset01 0 -1 
1) "v1"
2) "v2"
3) "v3"
4) "v4"
5) "v5"
192.168.1.66:6379> ZRANGE zset01 0 -1 withscores
 1) "v1"
 2) "60"
 3) "v2"
 4) "70"
 5) "v3"
 6) "80"
 7) "v4"
 8) "90"
 9) "v5"
10) "100"

zadd zrange

192.168.1.66:6379> ZRANGEBYSCORE zset01 60 90
1) "v1"
2) "v2"
3) "v3"
4) "v4"

ZRANGEBYSCORE 按分数范围查找

192.168.1.66:6379> ZRANGEBYSCORE zset01 60  (90
1) "v1"
2) "v2"
3) "v3"
192.168.1.66:6379> ZRANGEBYSCORE zset01 (60  (90
1) "v2"
2) "v3"

192.168.1.66:6379> ZREM zset01 v5
(integer) 1
192.168.1.66:6379> ZRANGE zset01 0 -1 
1) "v1"
2) "v2"
3) "v3"
4) "v4"

ZREM 删除某个元素

192.168.1.66:6379> zcard zset01
(integer) 4
192.168.1.66:6379> zcount zset01 60 80
(integer) 3
192.168.1.66:6379> zrank zset01 v4
(integer) 3
192.168.1.66:6379> zscore zset01 v4
"90"

zcard获取数量，zcount获取 范围数量，zrank获取key zscore 获取分数

192.168.1.66:6379> ZREVRANK zset01 v4
(integer) 0

ZREVRANK 逆序获取下标值

192.168.1.66:6379> ZRANGE zset01 0 -1 
1) "v1"
2) "v2"
3) "v3"
4) "v4"
192.168.1.66:6379> ZREVRANGE zset01 0 -1 
1) "v4"
2) "v3"
3) "v2"
4) "v1"

ZREVRANGE 逆序获取数据