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From: Jakub Narebski <jnareb@gmail.com>
To: Jeff King <peff@peff.net>
Cc: git@vger.kernel.org, "Junio C Hamano" <gitster@pobox.com>,
	"Ted Ts'o" <tytso@mit.edu>,
	"Jonathan Nieder" <jrnieder@gmail.com>,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	"Clemens Buchacher" <drizzd@aon.at>,
	"Eric Wong" <normalperson@yhbt.net>
Subject: Re: [PATCH 2/5] add object-cache infrastructure
Date: Tue, 12 Jul 2011 12:41:35 +0200	[thread overview]
Message-ID: <201107121241.40242.jnareb@gmail.com> (raw)
In-Reply-To: <20110711161754.GB10418@sigill.intra.peff.net>

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

  parent reply	other threads:[~2011-07-12 10:42 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-11 16:13 [RFC/PATCH 0/5] generation numbers for faster traversals Jeff King
2011-07-11 16:16 ` [PATCH 1/5] decorate: allow storing values instead of pointers Jeff King
2011-07-11 16:39   ` Jeff King
2011-07-11 19:06   ` Junio C Hamano
2011-07-11 21:20     ` Jeff King
2011-07-11 16:17 ` [PATCH 2/5] add object-cache infrastructure Jeff King
2011-07-11 16:46   ` Jeff King
2011-07-11 16:58     ` Shawn Pearce
2011-07-11 19:17   ` Junio C Hamano
2011-07-11 22:01     ` Jeff King
2011-07-11 23:21       ` Junio C Hamano
2011-07-11 23:42         ` Junio C Hamano
2011-07-12  0:03         ` Jeff King
2011-07-12 19:38           ` Clemens Buchacher
2011-07-12 19:45             ` Jeff King
2011-07-12 21:07               ` Clemens Buchacher
2011-07-12 21:15                 ` Clemens Buchacher
2011-07-12 21:36                 ` Jeff King
2011-07-14  8:04                   ` Clemens Buchacher
2011-07-14 16:26                     ` Illia Bobyr
2011-07-13  1:33                 ` John Szakmeister
2011-07-12  0:14         ` Illia Bobyr
2011-07-12  5:35           ` Jeff King
2011-07-12 21:52             ` Illia Bobyr
2011-07-12  6:36       ` Miles Bader
2011-07-12 10:41   ` Jakub Narebski [this message]
2011-07-12 17:57     ` Jeff King
2011-07-12 18:41       ` Junio C Hamano
2011-07-13  6:37         ` Jeff King
2011-07-13 17:49           ` Junio C Hamano
2011-07-11 16:18 ` [PATCH 3/5] commit: add commit_generation function Jeff King
2011-07-11 17:57   ` Clemens Buchacher
2011-07-11 21:10     ` Jeff King
2011-07-11 16:18 ` [PATCH 4/5] pretty: support %G to show the generation number of a commit Jeff King
2011-07-11 16:18 ` [PATCH 5/5] limit "contains" traversals based on commit generation Jeff King

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