1.redis 源码安装，配置，启动服务

1.1redis 6.2.6 下载

https://redis.io/download

上传解压
tar zxvf redis-6.2.6.tar.gz
redis 源码安装
--make
yum -y install gcc-c++ automake autoconf
make MALLOC=libc
--make install
make PREFIX=/home/cch/app/redis install

1.2 redis 配置

redis.conf 配置文件更改
bind 127.0.0.1 -::1 # 注释掉
protected-mode no
daemonize yes
vim搜索 /  XXX

1.3 redis启动 redis-server /redis-cli

./redis-server redis.conf
ps -ef|grep redis

./redis-cli 
ping
set name cch
get cch

2. redis shell命令

redis shell
redis
192.168.25.175
6379

ps -ef|grep redis

2.1服务启动

./redis-server redis.config
./redis-cli

redis-cli -h 127.0.0.1 -p 6379 shutdown

ping
select 3

2.2 String

set name zhangshan
get name
mset age 18 addr shanghai
mget age addr
del name

2.3 Hash

hset user name zhangsan
hget user name
hset user age 18
hget user age
hgetall user
hdel user age
del user

2.4 Array

lpush students zhangsan lisi
rpush students wangwu  zhaoliu
lrange students 0 3
llen students
lrem students 1 lisi

2.5 Set

sadd letters aaa bbb ccc ddd
smembers letters
scard letters
srem letters aaa

2.6 SortedSet

zadd score 1 zhangsan 5 lisi 3 wangwu 8 zhaoliu

zrange score 0 3
zcard score
zrem score zhangsan

2.7 expire /ttl /set xx /set nx EXISTS

set code test ex 10
get code
ttl code
expire code 10
#为空nil才能设置
set code test xx
#不为空nil才能设置
set code ceshi nx

EXISTS phone

2.8 keys scan

比如这里查询key111开头的key有哪些？
若使用keys命令，则执行 keys 一次性全部查出来

keys key1111*

同样，如果使用scan命令，则用

scan 0 match key1111* count 20
scan 0 match order* count 20

2.9 批量删除

2.10 Lua 脚本 remove_redis_keys.sh

#! /usr/bin/env bash
# scriptName remove_redis_keys.sh

REDIS_CLI=/home/cch/app/redis/bin/redis-cli

if [ ${#} -eq 0 ];then
   echo "missing params, please tell me which keys would be remove!"
   exit;
fi

HOST='127.0.0.1'
PORT=6379
keyPrefix=''


if [ ${#} -gt 2 ];then
   HOST=$1
   PORT=$2
   keyPrefix=$3
elif [ ${#} -gt 1 ];then
   HOST=$1
   keyPrefix=$2
else
   keyPrefix=$1
fi

echo "connecting to ${HOST}....."
sleep 5

CLIENT="${REDIS_CLI} -h ${HOST} -p ${PORT}" 

#列出所有的keys
${CLIENT} keys ${keyPrefix}
#开始删除
${CLIENT} keys ${keyPrefix} | xargs ${CLIENT} del
echo "redis_key:[${keyPrefix}] have been removed....."

lua脚本执行

chmod u+x remove_redis_keys.sh
 
#指定IP和端口, 删除U_开头的key
remove_redis_keys.sh 127.0.0.1 6380 U_*
 
#指定IP, 使用默认端口6379, 删除U_开头的key
remove_redis_keys.sh 127.0.0.1  U_*
 
#使用默认IP127.0.0.1,以及端口6379, 删除U_开头的key

```powershell
sh remove_redis_keys.sh U_*
sh remove_redis_keys.sh order*

2.11 .sh 执行报错 set ff=unix

在linux中用vi打开脚本文件，
在winSCP中使用windows编辑linux脚本,会在每行的结尾多一个\r
在命令模式下输入：

set ff=unix

设置格式为unix格式

3.Springboot集成redis

3.1 RedisConfig.java com.example.miaosha.config

package com.example.miaosha.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.script.DefaultRedisScript;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
public class RedisConfig {

    @Bean
    public RedisTemplate<String,Object> redisTemplate(RedisConnectionFactory redisConnectionFactory){
        RedisTemplate<String,Object> redisTemplate= new RedisTemplate<>();

        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());

        redisTemplate.setConnectionFactory(redisConnectionFactory);
        return redisTemplate;
    }

    @Bean
    public DefaultRedisScript<Long> script(){
        DefaultRedisScript<Long> redisScript =new DefaultRedisScript<>();
        //lock.lua脚本位置和application.yml 同级目录
        redisScript.setLocation(new ClassPathResource("stock.lua"));
        redisScript.setResultType(Long.class);
        return redisScript;
    }

}

3.2 RedisTemplate 使用 get set 设置超时

@Autowired
private RedisTemplate redisTemplate;

ValueOperations valueOperations = redisTemplate.opsForValue();

String captchaRedisStr=(String) valueOperations.get("captcha:"+user.getId()+":"+goodsId);

redisTemplate.opsForValue().set("captcha:"+user.getId()+":"+goodsId,captcha.text(),300, TimeUnit.SECONDS);