Redis入门和常用命令使用

淡淡的烟草味﹌ 2023-09-27 10:51 157阅读 0赞

# 什么是Redis #

![在这里插入图片描述][770f3f92acc54bdaaa118de05a4fe481.png_pic_center]

![在这里插入图片描述][edc0cf56d18b457b83d0b44bb496dc59.png_pic_center]

# Redis入门 #

![在这里插入图片描述][2ec729ce2eb446c5bca185e5b612119d.png_pic_center]

## Redis简介 ##

### 简介 ###

![在这里插入图片描述][4b580abf9fe5426bb8461d869834b15b.png_pic_center]

![在这里插入图片描述][4303edf71dd14f248c5eba60f2408f74.png_pic_center]

### 应用场景 ###

![在这里插入图片描述][eca75890ba9b4140b4b649cffbeb7a23.png_pic_center]

## Redis下载与安装 ##

具体的安装方法在我之前写的博客中  
**windows中Redis下载与安装**  
https://blog.csdn.net/weixin\_45428910/article/details/126964913

**Linux中Redis下载与安装**  
https://blog.csdn.net/weixin\_45428910/article/details/126964917?spm=1001.2014.3001.5501

![在这里插入图片描述][693b0ad0d18d405b96afb438bc987735.png_pic_center]  
![在这里插入图片描述][6f53b7a11c83492983446e07fa09f6de.png_pic_center]

## Redis服务启动与停止 ##

![在这里插入图片描述][3ead03658abb4747b254d16d1dbfb516.png_pic_center]  
![在这里插入图片描述][359ee300e036433b83210be2ab2a8538.png_pic_center]

# 数据类型 #

![在这里插入图片描述][0beb575b9f324a5788ed2432e7a56c24.png_pic_center]  
![在这里插入图片描述][48a06e8497c44dfe8a001a4b1cb34b48.png_pic_center]  
![在这里插入图片描述][0fa86c2d6f0c4bc9a71f2d6349d2ac25.png_pic_center]

## 字符串string操作命令 ##

![在这里插入图片描述][8e2832fbc4644e6abce739a8312b5c29.png_pic_center]

127.0.0.1:6379> set name xiaoming  //设置name为小明
    OK
    127.0.0.1:6379> set age 20//设置age为20
    OK
    127.0.0.1:6379> get age
    "20"
    127.0.0.1:6379> set age 30 //设置age为30
    OK
    127.0.0.1:6379> get age  //显示最后更新的数据
    "30"
    127.0.0.1:6379> setex city 10 beijing  //可以用在手机验证码，设置时长为10s
    OK
    127.0.0.1:6379> get city
    "beijing"
    127.0.0.1:6379> get city
    "beijing"
    127.0.0.1:6379> get city
    (nil)
    127.0.0.1:6379> setnx key1 value1 //设置的key和value的后，更改value值不会变
    (integer) 1
    127.0.0.1:6379> setnx key1 value2
    (integer) 0
    127.0.0.1:6379> get key1
    "value1"

## 哈希表hash操作命令 ##

![在这里插入图片描述][125dabb8449b436fb018bfb3774a9a14.png_pic_center]

127.0.0.1:6379> hset 001 name xiaoming  //哈希表设置key为001，field1为name，value1为xiaoming
    (integer) 1
    127.0.0.1:6379> hset 001 age 20//哈希表设置key为001，field2为age，value2为20
    (integer) 1
    127.0.0.1:6379> hget 001 name
    "xiaoming"
    127.0.0.1:6379> hget 001 age
    "20"
    127.0.0.1:6379> hdel 001 age//删除key为001，field2为age
    (integer) 1
    127.0.0.1:6379> hget 001 age
    (nil)
    127.0.0.1:6379> hkeys 001//显示key为001的field
    1) "name"
    127.0.0.1:6379> hvals 001//显示key为001的value
    1) "xiaoming"
    127.0.0.1:6379> hgetall 001//显示key为001的filed和value
    1) "name"
    2) "xiaoming"

## 列表list操作命令 ##

![在这里插入图片描述][af891833ec904dae81107172268edbb1.png_pic_center]

list实现任务队列
    
    127.0.0.1:6379> lpush mylist a b c //插入列表为mylist的数据为a b c
    (integer) 3
    127.0.0.1:6379> lrange mylist 0 -1 //显示列表数据
    1) "c"
    2) "b"
    3) "a"
    127.0.0.1:6379> lpush mylist test //插入数据test
    (integer) 4
    127.0.0.1:6379> lrange mylist 0 -1 
    1) "test"
    2) "c"
    3) "b"
    4) "a"
    127.0.0.1:6379> lpush mylist a
    (integer) 5
    127.0.0.1:6379> lrange mylist 0 -1
    1) "a"
    2) "test"
    3) "c"
    4) "b"
    5) "a"
    127.0.0.1:6379> rpop mylist //移除数据
    "a"
    127.0.0.1:6379> lrange mylist 0 -1
    1) "a"
    2) "test"
    3) "c"
    4) "b"
    127.0.0.1:6379> rpop mylist 
    "b"
    127.0.0.1:6379> lrange mylist 0 -1
    1) "a"
    2) "test"
    3) "c"
    127.0.0.1:6379> llen mylist  //显示数据长度
    (integer) 3
    127.0.0.1:6379> brpop mylist 10  //移除数据并显示下一个数据，并设置时间为10
    1) "mylist"
    2) "c"
    127.0.0.1:6379> brpop mylist 10
    1) "mylist"
    2) "test"
    127.0.0.1:6379> brpop mylist 10
    1) "mylist"
    2) "a"
    127.0.0.1:6379> brpop mylist 10 //直到没有数据，停留时间为10
    (nil)
    (10.02s)
    127.0.0.1:6379>

## 集合set操作命令 ##

![在这里插入图片描述][ca5eefc2a1914926b263e9d1a6c93531.png_pic_center]

127.0.0.1:6379> sadd myset a b c d  //添加元素
    (integer) 4 
    127.0.0.1:6379> smembers myset //集合内容显示
    1) "c"
    2) "b"
    3) "d"
    4) "a"
    127.0.0.1:6379> sadd myset a b c   //添加重复元素
    (integer) 0
    127.0.0.1:6379> smembers myset  //集合中不会显示重复数据
    1) "d"
    2) "a"
    3) "c"
    4) "b"
    127.0.0.1:6379> sadd myset2 a b h g //设置myset2的数据
    (integer) 4
    127.0.0.1:6379> sinter myset myset2 //myset myset2的交集
    1) "a"
    2) "b"
    127.0.0.1:6379> sunion myset myset2//myset myset2的并集
    1) "a"
    2) "h"
    3) "d"
    4) "c"
    5) "b"
    6) "g"
    127.0.0.1:6379> sdiff myset myset2//myset - myset2的差集
    1) "c"
    2) "d"
    127.0.0.1:6379> sdiff myset2 myset //myset2 - myset的差集
    1) "h"
    2) "g"
    127.0.0.1:6379> srem myset a b c //myset的集合数据移除
    (integer) 3

## 有序集合sorted set操作命令 ##

![在这里插入图片描述][d3d75b42324b4e709da69c7f0c6b0e32.png_pic_center]

127.0.0.1:6379> zadd myset4 10.0 a 9.0 b  //有序集合 myset4中输入
    (integer) 2
    127.0.0.1:6379> zrange myset4 0 -1 //myset4中的成员
    1) "b"
    2) "a"
    127.0.0.1:6379> zadd myset4 9.9 c //有序集合 myset4中添加c
    (integer) 1
    127.0.0.1:6379> zrange myset4 0 -1
    1) "b"
    2) "c"
    3) "a"
    127.0.0.1:6379> zrange myset4 0 -1 withscores//显示所有内容
    1) "b"
    2) "9"
    3) "c"
    4) "9.9000000000000004"
    5) "a"
    6) "10"
    127.0.0.1:6379> zrange myset4 0 -1 //显示排序
    1) "c"
    2) "a"
    3) "b"
    127.0.0.1:6379>

# 常用命令 #

![在这里插入图片描述][a3d7ca89aa914922ad203d23da389cb5.png_pic_center]

127.0.0.1:6379> keys * //查看所有keys
    1) "myset2"
    2) "myset"
    3) "age"
    4) "myset4"
    5) "myset3"
    6) "key1"
    7) "001"
    8) "name"
    127.0.0.1:6379> ttl name //查看name的时间设置 -1显示没有
    (integer) -1
    127.0.0.1:6379> setex test 100 itcast //设置key为test的值为100s
    OK
    127.0.0.1:6379> keys * 
    1) "myset"
    2) "myset2"
    3) "test"
    4) "age"
    5) "key1"
    6) "name"
    7) "myset3"
    8) "myset4"
    9) "001"
    127.0.0.1:6379> ttl test //显示时间
    (integer) 69
    127.0.0.1:6379> ttl test
    (integer) 63
    127.0.0.1:6379> ttl test
    (integer) 61
    127.0.0.1:6379> ttl test
    (integer) 59
    127.0.0.1:6379> del test
    (integer) 1
    127.0.0.1:6379> keys * //查看keys
    1) "myset"
    2) "myset2"
    3) "age"
    4) "key1"
    5) "name"
    6) "myset3"
    7) "myset4"
    8) "001"
    127.0.0.1:6379> del name age 001 //删除name age 001
    (integer) 3
    127.0.0.1:6379> keys *
    1) "myset"
    2) "myset2"
    3) "key1"
    4) "myset3"
    5) "myset4"

# 在Java中操作Redis #

![在这里插入图片描述][b2d4cea3fe2c474aa2edc8620d78f884.png_pic_center]

## 介绍 ##

![在这里插入图片描述][8fdb73f26e26492ca5a63bebb624770b.png_pic_center]  
![在这里插入图片描述][48cc9bc057ee4760bb18bb079b6f15bc.png_pic_center]

## Jedis ##

![在这里插入图片描述][baf9d13485a5433ba70aa2e6f4c896c7.png_pic_center]

## Spring Data Redis ##

![在这里插入图片描述][70e64f6dbf6e4ef5a664549f8882267d.png_pic_center]

![在这里插入图片描述][83c13fe8e22e4b9c8a2293003d404ab8.png_pic_center]

资料参考：https://www.bilibili.com/video/BV13a411q753?p=142&vd\_source=00e2e992f9d24cfebca6324ea1662cd4

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