What is the meaning of “per route basis” in PoolingClientConnectionManager?

Question

ThreadSafeClientConnManager is deprecated and a new method is introduced PoolingClientConnectionManager.

The documentation of PoolingClientConnectionManager says

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Answer 1

Put it in simple term, per route means per host you are connecting to.

PoolingHttpClientConnectionManager maintains a maximum limit of connections on a per route basis and in total. Per default this implementation will create no more than 2 concurrent connections per given route and no more 20 connections in total.