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我正在使用 Spring Data Redis，需要对JedisPoolConfig. 我已配置RedisTemplate如下：

@Bean
JedisPoolConfig jedisPoolConfig() {

    JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
    return jedisPoolConfig;
}

@Bean
public RedisConnectionFactory redisConnectionFactory() {

    JedisConnectionFactory jedisConnectionFactory = new JedisConnectionFactory(jedisPoolConfig());
    jedisConnectionFactory.setHostName(redisSettings.getServer().getHost());
    jedisConnectionFactory.setPort(redisSettings.getServer().getPort());
    return jedisConnectionFactory;
}

@Bean
public RedisTemplate<String, Integer> redisTemplate(RedisConnectionFactory redisConnectionFactory) {

    RedisTemplate<String, Integer> redisTemplate = new RedisTemplate<String, Integer>();
    redisTemplate.setConnectionFactory(redisConnectionFactory);
    redisTemplate.setKeySerializer(new StringRedisSerializer());
    redisTemplate.setEnableTransactionSupport(true);
    return redisTemplate;
}

我有一个标记为 的服务@Transactional，它依次调用 a@Repository来增加 Redis 中的一些键：

@Service
@Transactional
public class MyService {

    @Autowired
    MyRepository myRepository;

    public void recordStats() {

        myRepository.recordStats();
    }

}


@Repository
public class MyRepository {

    @Resource(name="redisTemplate")
    ValueOperations<String, Integer> valueOperations;

    public void recordStats() {

        valueOperations.increment("KEY01", 1);
        valueOperations.increment("KEY02", 1);
        valueOperations.increment("KEY03", 1);
        valueOperations.increment("KEY04", 1);
        valueOperations.increment("KEY05", 1);
        valueOperations.increment("KEY06", 1);
        valueOperations.increment("KEY07", 1);
        valueOperations.increment("KEY08", 1);
        valueOperations.increment("KEY09", 1);
        valueOperations.increment("KEY10", 1);
        valueOperations.increment("KEY11", 1);
    }
}

当我在调试中调用myService.recordStats()并单步执行代码时，它会在尝试增加 KEY11 时挂起，并最终以redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool. 如果我修改JedisPoolConfig增加 MaxTotal 如下：

@Bean
JedisPoolConfig jedisPoolConfig() {

    JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
    jedisPoolConfig.setMaxTotal(128);
    return jedisPoolConfig;
}

然后问题就消失了，我可以增加事务中的所有 11 个键。似乎每个valueOperations.increment调用都从池中获取另一个连接。这是正确的，还是我在某个地方有配置问题？

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