Spring Cache

注解	说明
@EnableCaching	开启缓存注解功能，通常加在启动类上
@Cacheable	在方法执行前先查询缓存中是否有数据，如果有数据则直接返回缓存数据;如果没有缓存数据，调用方法并将方法返回值放到缓存中
@CachePut	将方法的返回值放到缓存中
@CacheEvict	将一条或多条数据从缓存中删除

      <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-cache</artifactId></dependency>

CacheDemoApplication

@Slf4j
@SpringBootApplication
@EnableCaching//开启缓存注解功能
public class CacheDemoApplication {public static void main(String[] args) {SpringApplication.run(CacheDemoApplication.class,args);log.info("项目启动成功...");}
}

UserController

@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {@Autowiredprivate UserMapper userMapper;@PostMapping@CachePut(cacheNames = "userCache",key = "#user.id")//如果使用springCache缓存，key的生成：userCache：abcpublic User save(@RequestBody User user){userMapper.insert(user);return user;}@DeleteMapping@CacheEvict(cacheNames = "userCache",key = "#id")public void deleteById(Long id){userMapper.deleteById(id);}@DeleteMapping("/delAll")@CacheEvict(cacheNames = "userCache",allEntries = true)//所有的键值对public void deleteAll(){userMapper.deleteAll();}@GetMapping@Cacheable(cacheNames = "ceshi",key = "#id")public User getById(Long id){User user = userMapper.getById(id);return user;}
}