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Re: .html? File Extensions Perhaps Not So Harmful

From: Mark Nottingham <mnot@mnot.net>
Date: Sun, 14 Oct 2001 13:17:29 -0700
To: Alex Rousskov <rousskov@measurement-factory.com>
Cc: "Ian B. Jacobs" <ij@w3.org>, www-qa@w3.org
Message-ID: <20011014131723.A14052@mnot.net>

I don't think this merits 'screw up'. Proxy caching is an optimisation
mechanism; most don't support Vary in that they don't cache
anything that is content-negotiated. They will still service the
request, and indeed handle the Vary header correctly.

If a proxy doesn't support Vary in the sense that it will go ahead
and cache the entity without considering Vary in the cache key, it's
broken. That's their fault, not the content provider's.

On Thu, Oct 11, 2001 at 09:30:23PM -0600, Alex Rousskov wrote:
> On Thu, 11 Oct 2001, Ian B. Jacobs wrote:
> > Now that SVG is a Recommendation, we'll probably start publishing
> > several versions of an image, so that you get the best format your
> > browser supports.
> .. and probably screw up most caching proxies out there because they
> still cannot handle Vary headers [correctly].
> Alex.

Mark Nottingham
Received on Sunday, 14 October 2001 16:17:44 UTC

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