一、引入依赖 

org.springframework.bootspring-boot-starter-data-redis2.4.4

二、后台代码：

spring.redis.database=0
spring.redis.host=192.168.1.xxx
spring.redis.port=8099
spring.redis.jedis.pool.max-active=8
spring.redis.jedis.pool.max-wait=-1ms
spring.redis.jedis.pool.max-idle=8
spring.redis.jedis.pool.min-idle=0
spring.redis.timeout=0

@Controller
@Api(tags = "书本数据接口")
@EnableCaching//开启缓存public class BookController {

｝

  @Cacheable(value = "book_id")//使用缓存    @Overridepublic Book getBookById(Integer id) {
        System.out.println("从数据库中查询。。。。。");return bookMapper.getBookById(id);
    }