实现一个简单的Redis Demo

		
        
            org.springframework.boot
            spring-boot-starter-data-redis
        
        
        
            org.apache.commons
            commons-pool2
        

spring:  
  	redis:
      #超时时间
      timeout: 10000ms
      #服务器ip
      host: 127.0.0.1
      #服务器端口
      port: 6379
      database: 0
      #连接池配置
      lettuce:
        pool:
          #最大连接数 默认8
          max-active: 1024
          #最大等待时间,默认-1
          max-wait: 10000ms
          #最大空闲连接
          max-idle: 200
          #最小空闲连接
          min-idle: 5

@Configuration
public class RedisConfig {
    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory){
        RedisTemplate redisTemplate = new RedisTemplate<>();
        //String类型 key序列器
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        //String类型 value序列器
        redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
        //String类型 key序列器
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        //String类型 value序列器
        redisTemplate.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());
        //将工厂加载到Redis模版
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        return redisTemplate;
    }
}

//查询redis里是否有bannerImg
ValueOperations valueOperations = redisTemplate.opsForValue();
List bannerImg = ((List)valueOperations.get("bannerImg"));
System.out.println("成功从Redis中取出"+bannerImg);
//如果没有将从数据库查询
if (CollectionUtils.isEmpty(bannerImg)){
  	//在数据库中查询并输出
    bannerImg = indexBannerMapper.queryIndexImg();
  	System.out.println("成功从数据库中取出"+bannerImg);
  	//并将其存到Redis中
    valueOperations.set("bannerImg",bannerImg);
}