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Re: Status of wc-propcaching branch

From: Greg Hudson <ghudson_at_MIT.EDU>
Date: 2005-11-28 18:53:21 CET

On Mon, 2005-11-28 at 17:36 +0000, Malcolm Rowe wrote:
> If we need to cache more properties, bump the format, and re-populate
> the cache from the properties - like we do when maybe-upgrading to the
> wc-propcaching format in the first place.

If we can design to avoid bumping the wc format, I think we should.
Compatibility code is irritating to maintain (code to upgrade the wc
format as well as code to handle the old format for read-only
operations), and there's also some end-user pain associated with
upgrades which involve wc format bumps.

(I'm *not* saying we shouldn't bump the wc format in 1.4. The
performance advantages of wc-propcaching are compelling enough to
warrant a bump. But such bumps are not free.)

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Received on Mon Nov 28 19:44:31 2005

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