# set命令
## 往set插入数据

```js
sadd myset 3 4
```

![image.png](/static/img/40544099221566aca56137ef830a1049.image.webp)

## 遍历所有的元素


```js
smembers myset
```
遍历出来是无序的，按照哈希排序

![image.png](/static/img/1512229aef1a82f0aef2b1bf94e6d726.image.webp)


## 删除集合其中一个指定的元素


```js
srem myset 1
```
![image.png](/static/img/f116327f087589c0ba698645b4fb2bc5.image.webp)


## 随机弹出一个元素，并删除

```js
spop myset 1
```

![image.png](/static/img/1f3dce760ce4caa537dc12f889b0230e.image.webp)

## （差集）返回特有的元素
差集就key1跟key2对比，返回key1没有的值
```js
sdiff set1 set2
```
![](http://songxuan.vip/static/img/22ca2c4b8c2a87263552fcf56b7c9c64.image.webp)

## 交集
交集就是key1和key2都有的值
```js
sinter set1 set2
```

![image.png](/static/img/bfd7eb47d97f300b2739275ebfc97509.image.webp)

## 并集
并集就是两个key集进行集合，重复的剔除
```js
sunion set1 set2
```

![image.png](/static/img/c6d1385bdec5aeb612de50f49faafd1a.image.webp)


# 应用场景

![image.png](/static/img/abe9cd9a9622520fe4631869420aecfa.image.webp)

5.redis命令-Set

# 一、命令
## 从key的右边插入list的value

```js
rpush shuzi 1 2 3 4 5
```

![image.png](/static/img/0fab74194c7325885ad55510ff11ab11.image.webp)

![image.png](/static/img/9f7a6451aeaca4f8c3ce56f1faf76f62.image.webp)

## 从key的左边列出list的value

```js
lrange shuzi 0 5
```
```js
#不管列表有多少个都列出来
lrange shuzi 0 -1
```
![image.png](/static/img/96c87e7877ee3da76fd5f67de00b114b.image.webp)

## 从key的左边边插入list的value

```js
lpush shuzi -3 -2 -1
```

![image.png](/static/img/6448b4c468e925fb972d42cc90c163f0.image.webp)

## 从list列表中删除最左边的value

```js
lpop shuzi
```

![image.png](/static/img/5c42c03a9d751fb4e4774791fecacad0.image.webp)
## 从list列表中删除最右边的value

```js
rpop shuzi
```

![image.png](/static/img/7f945e19277b7fe768cc9865df7c82ee.image.webp)

## 获取list列表的长度
```js
llen shuzi
```

![image.png](/static/img/afcaf6b11c597e294b06c4377b53f64c.image.webp)

## 从list某个值前面插入
我从1前面插入-1
```js
linsert shuzi before 1 -1
```

![image.png](/static/img/d9f1546f5011ed2453584c4a33d0df23.image.webp)

## 从list某个值后面插入
从5后面插入6
```js
 linsert shuzi  after 5 6
```

![image.png](/static/img/51df8bbf9ec2d1ad8489fdc74de3362c.image.webp)

## 把列表中0位置的更换成0，前是换的位置，后面是换的值
```js
lset shuzi 0 0
```

![image.png](/static/img/823a857b7568378f81057d31497f24ca.image.webp)


## 把列表中0位置的1值删除
```js
lrem shuzi 0 1
```


![image.png](/static/img/562d39bdf65bf56789488bbc0371d30e.image.webp)

## 显示2至3位置 的值

```js
LRANGE shuzi 2  3
```

![image.png](/static/img/c34d4c5b8df0d0e551a617e9add15e40.image.webp)


## 显示3位置的值

```js
lindex shuzi 3
```

![image.png](/static/img/b6d1fa2ed1282d39603a35c73757062b.image.webp)



# 应用场景

![image.png](/static/img/59bccac73c69ddf90226c7f13a2c8b5a.image.webp)

4.redis命令-List

## 往对应的key添加hash

```js
hset name mingzi songxuan
hset name age 18
```

![image.png](/static/img/62fde3d570825a612c1e7d14a55b5311.image.webp)

## 查看对应的hash

```js
hget name mingzi
hget name age
```
![image.png](/static/img/f5b6e9004aad37e893ea8654bbedc481.image.webp)

## 判断对应的key是否有hash

```js
hexists name mingzi
```
有就是1

![image.png](/static/img/309e4056a96adc9e9e2c148cc84b208b.image.webp)

## 删除key的hash
```js
hdel name age
```

![image.png](/static/img/86ad9f8aef9e791beb02dd202e839391.image.webp)

## 给key某个hash加一


```js
hincrby name age 1
```

![image.png](/static/img/5123e0de00183bf1539a08e6f10eb134.image.webp)

## 查看key的列表有几个hash

```js
hlen name
```

![image.png](/static/img/c16375dab3c347f9f3de28fc75fc9e64.image.webp)

## 查看key的所有hash中的key

```js
hkeys name
```

![image.png](/static/img/f1121b8bbefbc8cc1796bcec10add3f3.image.webp)

## 查看key的所有hash中的value

```js
hvals name
```

![image.png](/static/img/e32b088cdd9b660b4bb04260cdcf1d32.image.webp)

## 查看key的hash中的key和value

```js
hgetall name
```

![image.png](/static/img/7940c7005a9db113632df980e94a434a.image.webp)




# 二、应用场景

方案1用 string，方案2用hash
![image.png](/static/img/b19b504a906a08327d79747b60ee1b1d.image.webp)

3.redis命令-Hash

# 一、String
## 添加key和value
```js
set name songxuan
set age 18
```

![image.png](/static/img/aaa6526e0976c068efe6392640951827.image.webp)

## 设置key和value
```js
set name songxuan01
```
同key会把前面的的value覆盖掉
![image.png](/static/img/a12b62dfd11661b60e2404f9c40f48d4.image.webp)


## 给对应的kye的value+1
```js
incr age
```
## 获取对应的key
```js
get age
```

![image.png](/static/img/4f5ee113d51d2054fc7cc22197959720.image.webp)


## 给对应的kye的value-1
```js
decr age
```

![image.png](/static/img/6d9f1f7ac47733dce50ba7ba7cf4cb0c.image.webp)


## 添加key和value,5秒后清空该key和value

```js
setex sex 5 man
```

![image.png](/static/img/da1dc00509df22f163ddb17c811ddaec.image.webp)

## 查看key的存活时间
```js
ttl sex
```

![image.png](/static/img/35da0f29f102ade342a08f2ad27e18bb.image.webp)

-1是永久存活的，-2是已经过期

![image.png](/static/img/2f8488d30c8a20720f6c2f0683b37efd.image.webp)

## 删除key

```js
del name
```

![image.png](/static/img/406f07f9b50984e7136f3e16fe460664.image.webp)

## 如果key存在不做任何操作，不存在进行添加

```js
setnx name songxuan
```

![image.png](/static/img/34b0e35f7b092e683771436cd21f8852.image.webp)


## 给key加100

```js
incrby age 100
```

![image.png](/static/img/847d1d633ce90e8a8044f05d4dcc232d.image.webp)

## 批量添加key和value
```js
mset sex nv sex1 nan
```
## 批量获取

```js
mget sex sex1
```
![image.png](/static/img/48fb8b3b5ba3bc55454e83416d46eaff.image.webp)
## 拼接key的value

```js
append name hao
```
![image.png](/static/img/10f848185faddf9eb2d0251134c95e33.image.webp)

## 替换key中指定位置的值

```js
setrange demo 5 'word'
```

![image.png](/static/img/16cb31a26596b9fdbb5c917434256f25.image.webp)

# 二、应用场景
1.计数器incr
2.共享session
![image.png](/static/img/ede410a7092baf7b22e80ce7ff3bb781.image.webp)

2.redis命令-String

# 一、Redis安装
下载好redis安装包后，进行解压
```js
tar -zxvf redis-6.2.14.tar.gz
```
然后进入解压的文件目录进行编译

```js
cd /songxuan/redis-6.2.14
```
```js
make
```

```js
make install
```
![image.png](/static/img/2f25dbb2b3aba27bd0e48504eeb007db.image.webp)


安装好后，默认的命令都在该路径下

```js
cd /usr/local/bin
```
![](http://songxuan.vip/static/img/6131b4bdbd498fc0761eb6af83d8fd94.image.webp)

# 二、修改配置文件

```js
cd /songxuan/redis-6.2.14
```

```js
vi redis.conf
```

![image.png](/static/img/7eadba0c6e1995e159be28cf8be03eef.image.webp)

![image.png](/static/img/f28643c5f239531e3835b83401c5e2a2.image.webp)

# 3.redis的启动
指定配置文件启动redis
```js
redis-server  /songxuan/redis-6.2.14/redis.conf
```
启动后测试连接redis，记住连你修改的IP

```js
redis-cli -h 192.168.201.104 -p 6379
```
![](http://songxuan.vip/static/img/0c8c07adf3d531bb4db673eff0472934.image.webp)


# 三、客户端工具

![image.png](/static/img/6ef3794912b961a4bc555f0ac431205e.image.webp)
