From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jakub Narebski <jnareb@gmail.com>
Subject: Re: [PATCH 2/5] add object-cache infrastructure
Date: Tue, 12 Jul 2011 12:41:35 +0200
Message-ID: <201107121241.40242.jnareb@gmail.com>
References: <20110711161332.GA10057@sigill.intra.peff.net> <20110711161754.GB10418@sigill.intra.peff.net>
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Cc: git@vger.kernel.org, Junio C Hamano <gitster@pobox.com>,
	Ted Ts'o <tytso@mit.edu>, Jonathan Nieder <jrnieder@gmail.com>,
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	Eric Wong <normalperson@yhbt.net>
To: Jeff King <peff@peff.net>
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On Mon, 11 July 2011, Jeff King wrote:

> There is sometimes a need to cache some information about an
> object or set of objects persistently across git
> invocations. The notes-cache interface can be used for this,
> but it is very heavyweight and slow for storing small
> values.
> 
> This patch introduces a new API, object-cache, which stores
> a mapping of objects to values in a concise and efficient
> form. See the added API documentation for details.
> 
> Signed-off-by: Jeff King <peff@peff.net>
> ---
> As I mentioned earlier, I wanted this to be generic and size-agnostic,
> because I'd also like to try caching patch-ids for git-cherry.

Could this API be generalized to support "reverse cache", for example
to map Subversion revision numbers to Git revision identifiers (for 
git-svn)?

-- 
Jakub Narebski
Poland