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From "Raffaele P. Guidi" <>
Subject Re: Objective of DirectMemory project?
Date Tue, 18 Oct 2011 07:09:31 GMT
I tried to clarify on this before (see the proposed roadmap): I started with
off heap, then tried to do too much doing a complete cache solution (it
didn't work well), then decided to focus again on off heap and did a
complete rewrite. In short the proposal is to keep focus on the off heap
part but add some basic cache features to ease and spread adoption.

Uhm I suspect the roadmap has got lost in the switch to confluence but it
should be in an email to dev as well, gotta look for it and put in the wiki


On Tuesday, October 18, 2011, Ashish <> wrote:
> Folks,
> Sorry for this simple questions, but whenever I read the project
> description of DirectMemory it slightly confuses me.
> The confusion stems from the statement "Apache DirectMemory is a multi
> layered cache implementation..", which I interpret as DirectMemory is
> a cache implementation, which features offheap store meaning stores
> elements outside heap.
> So confusion is around
> 1. Are we going to have a Cache implementation which stores all data
> offheap or some onheap and some offheap?
> 2. Or are we focused on creating a Data Store which is offheap and can
> be plugged in as data store of other cache implementation? In this
> case we are focussed on creating our own Offheap Map implementation.
> Just to have more clarity to focus on implementation.
> --
> thanks
> ashish
> Blog:
> My Photo Galleries:

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