Netflix/zuul — pull request #73 by NiteshKant (2014-09-18 21:31:26+00:00)
Title: Implementing dispose on the inbound content for content that wasn't written to the client

Currently we are using `Observable.cache()` which does not release the `ByteBuffer` if no one subscribes to it.
This change provides the method to release any cached `ByteBuffer`s which were not consumed in case of success or error.