SpringBoot之Cache註解結合Redis的使用

@Service
public class RedisServiceImpl implements RedisService {

    @Override
    @Cacheable(value = "user", key = "#id") //id=123456,會在redis裏存一個key爲user::123456的對象，如沒有則創建，如有則讀取並且不會走業務代碼，直接返回對象
    public User getUser(String id) {
        System.out.println("模擬了數據庫查找"+id);
        User user = new User();
        user.setId(id);
        user.setName("張三");
        user.setAge(20);
        user.setSex("男");
        return user;
    }

    @Override
    @CachePut(value = "user", key = "#user.id") //id=123456,更新key爲user::123456的對象
    public User setUser(User user) {
        System.out.println("模擬了數據庫存入");
        return user;
    }

    @Override
    @CacheEvict(value = "user", key = "#id") //id=123456,刪除key爲user::123456的對象
    public int deleteUser(String id) {
        System.out.println("模擬了數據庫刪除");
        return 1;
    }
}