java - Redis connection - 'Could not get a resource from the pool'

Question

I am using redis in pubsub model with following code

@Value("${redis.server.host}")
private String redisServerHost;

@Value("${redis.server.port}")
private int redisServerPort;

@Value("${redis.server.password}")
private String redisServerPassword;

@Value("${redis.pool.min.idle}")
private int poolMinIdle;

@Value("${redis.pool.max.idle}")
private int poolMaxIdle;

@Value("${redis.pool.max.total}")
private int poolMaxTotal;

@Value("${redis.pool.max.waitmilli}")
private int poolMaxWait;

@Value("${redis.pool.connection.name}")
private String connectionName;

@Value("${redis.pool.max.evictable}")
private int poolMaxEvictable;

@Bean
RedisConnectionFactory connectionFactory() {
    RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration(redisServerHost,
            redisServerPort);
    if ((redisServerPassword != null) && (!redisServerPassword.equalsIgnoreCase("null"))) {
        redisStandaloneConfiguration.setPassword(RedisPassword.of(redisServerPassword));
    }
    GenericObjectPoolConfig poolConfig = new GenericObjectPoolConfig();
    poolConfig.setMaxIdle(poolMaxIdle);
    poolConfig.setMinIdle(poolMinIdle);
    poolConfig.setMaxWaitMillis(poolMaxWait);
    poolConfig.setMaxTotal(poolMaxTotal);
    poolConfig.setMinEvictableIdleTimeMillis(poolMaxEvictable);

    LettucePoolingClientConfiguration lettucePoolingClientConfiguration = LettucePoolingClientConfiguration
            .builder().clientName(connectionName).commandTimeout(Duration.ofSeconds(10))
            .shutdownTimeout(Duration.ZERO).poolConfig(poolConfig).build();

    LettuceConnectionFactory lettuceConnectionFactory = new LettuceConnectionFactory(redisStandaloneConfiguration,
            lettucePoolingClientConfiguration);
    lettuceConnectionFactory.setShareNativeConnection(false);
    return lettuceConnectionFactory;
}

where

minIdle = 10
maxIdle = 50
maxTotal = 200
evictableTime = 20000
maxWait = 2000

Still I am getting issues of org.springframework.data.redis.RedisSystemException: Unknown redis exception; nested exception is org.springframework.data.redis.connection.PoolException: Could not get a resource from the pool; nested exception is java.util.NoSuchElementException: Timeout waiting for idle object

After checking client list I can see it has 200 clients already been created, though at a time my application is not creating these many connections.

Client list has major portion of clients with cmd=client and 4-5 publisher/subscriber

Any direction please to resolve the issue.

Answer 1

等待大神答复