Spring 数据Redis。如何知道事件、空闲连接的数量？

Question

在 Spring 中，我有一个 jedisConnFactory 和一个像这样的 jedisPoolConfig bean

    <bean id="jedisConnFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"
p:host-name="127.0.0.1" p:port="6379" p:poolConfig-ref="jedisPoolConfig" />

    <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxTotal" value="${redis.pool.maxTotal}" />
        <property name="maxIdle" value="${redis.pool.maxIdle}" />
        <property name="maxWaitMillis" value="${redis.pool.maxWaitMillis}" />
    </bean>

向服务器发送数据是可以的。但我不知道如何验证 JedisPoll 是否正常工作。

如何查看事件、空闲连接数？

Answer 1

我们可以通过Java反射获取指标:

      Field poolField = JedisConnectionFactory.class.getDeclaredField("pool");
  poolField.setAccessible(true);
  Pool<Jedis> jedisPool = (Pool<Jedis>)poolField.get(connectionFactory);
  int activeNum = jedisPool.getNumActive();
  int idleNum = jedisPool.getNumIdle();
  int waitNum = jedisPool.getNumWaiters();
  long maxBorrowWaitMs = jedisPool.getMaxBorrowWaitTimeMillis();
  long meanBorrowWaitMs = jedisPool.getMeanBorrowWaitTimeMillis();

输出:

pool monitor - activeNum=0,idleNum=1,waitNum=0, maxBorrowWaitMs=7, meanBorrowWaitMs=0