java - HyperLoglog Spring 按键操作

Question

我有以下代码片段来测试我是否可以在 Redis 中添加 HLL 值，这个测试通过了，但是当我从 redis 命令行验证它时，我没有看到“HLLTEST”键，而是我发现了奇怪的键您可以从以下输出中看到。HyperLogLogOperations 的使用有问题吗，

@Test
    public void whenHllRecord_thenCount() throws Exception {
        hyperLogLogOperations = redisTemplate.opsForHyperLogLog();

        hyperLogLogOperations.add("HLLTEST:1010", 1);
        hyperLogLogOperations.add("HLLTEST:1010",2);

        long size = hyperLogLogOperations.size("HLLTEST:1010");

        assertEquals("Size: "+size, size, 2);
    }

Redis 命令行

redis:6379> keys *
 1) "\xac\xed\x00\x05t\x00\x0cHLLTEST:1010"
redis:6379> pfcount HLLTEST:1010
(integer) 0

Redis session

 @Bean
   public RedisTemplate<String, Object> redisTemplate() {
      final RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
      template.setConnectionFactory(jedisConnectionFactory());
      template.setValueSerializer(new GenericToStringSerializer<Object>(Object.class));
      return template;
   }

Answer 1

我忘记分配 key 序列化程序。如下设置后就可以了，

  @Bean
   public RedisTemplate<String, Object> redisTemplate() {
      final RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
      template.setConnectionFactory(jedisConnectionFactory());

     //template.setValueSerializer(new GenericToStringSerializer<Object>(Object.class));

      template.setKeySerializer(new StringRedisSerializer());
      template.setValueSerializer(new StringRedisSerializer());

      return template;
   }