sonatype/async-http-client — pull request #134 by kstokoz (2012-08-22 10:45:01+00:00)
Title: An option to limit pooled connections life time 

In case of Amazon Cloud DNS records can change in seconds, and taking into account that AHC caches already resolved connection and never re-resolve DNS records if response is ok, introducing option to limit life for cached connections, to be able to gracefully route traffic to new host in case dns records changed.