Redis穿透问题怎么解决?

//缓存穿透：在Controller中查询数据时，先根据请求参数进行Bloom Filter的过滤

@RestController

public class RC2 {

@Autowired

private PersonService personService;

@Autowired

private RedisTemplate redisTemplate;

@GetMapping("/person2/{id}")

public Person getUserById(@PathVariable String id){

//先从布隆过滤器中判断此id是否存在

if(BloomFilterUtil.mightContain(id)){

return null;

}

//查询缓存数据

Person person = (Person) redisTemplate.opsForValue().get(id);

if(person == null){

person = personService.getById(id);

if(person != null){

//将查询到的数据加入缓存

redisTemplate.opsForValue().set(id, person, 300, TimeUnit.SECONDS);

}else{

//查询结果为空，将请求记录下来，并在布隆过滤器中添加

BloomFilterUtil.add(id);

}

}

return person;

}

}