Could not get a resource from the pool

Posted 2021-01-05 --candice

异常描述： 

1.  
   redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool
2.  
   at redis.clients.util.Pool.getResource(Pool.java:22)
3.  
   at com.derbysoft.jredis.longkeytest.BorrowObject.run(BorrowObject.java:22)
4.  
   at java.lang.Thread.run(Thread.java:662)
5.  
   Caused by: java.util.NoSuchElementException: Timeout waiting for idle object
6.  
   at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:1134)
7.  
   at redis.clients.util.Pool.getResource(Pool.java:20)
8.  
   ... 2 more

1、产生原因：客户端去redis服务器拿连接（代码描述的是租用对象borrowObject）的时候，池中无可用连接，即池中所有连接被占用，且在等待时候设定的超时时间后还没拿到时，报出此异常。 

2、解决办法：调整JedisPoolConfig中maxActive为适合自己系统的阀值。 

<bean id="dataJedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig"> 
        <property name="maxActive" value="300"/> 
       <property name="maxIdle" value="100"/> 
        <property name="maxWait" value="10000"/> 
        <property name="testOnBorrow" value="true"/> 
</bean>