Apache Httpclient连接尚未发布

Question

I am using spring rest template to send REST request with apache http client 4.2.1 intergrated.

As we need send request to multiple server, added PoolingClientConnectionManager to manager the connections.

Set the max per route to 5 connectionManager.setDefaultMaxPerRoute(5)

While after the system running for few days, we found that the connection reached the maxmium per route settings.

Printed log as below total kept alive: 0; route allocated: 5 of 5; total allocated: 5 of 100

Seems the connection is not released by some reason. But when i debug, i found every time after request is finished, the connection will be released even there's exception happens.

Is there any other potential root cause of this connection cannot be released?

Answer 1

这是因为在某些情况下，服务器持有请求，我们需要为http客户端添加超时