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Re: NEW ISSUE: Methods and Caching

From: Julian Reschke <julian.reschke@gmx.de>
Date: Wed, 19 Nov 2008 08:08:43 +0100
Message-ID: <4923BB7B.7020102@gmx.de>
To: Henrik Nordstrom <henrik@henriknordstrom.net>
CC: Yves Lafon <ylafon@w3.org>, Brian Smith <brian@briansmith.org>, mnot@mnot.net, Robert.Siemer-httpwg@backsla.sh, ietf-http-wg@w3.org

Henrik Nordstrom wrote:
> On tis, 2008-11-18 at 19:03 +0100, Julian Reschke wrote:
> 
>> The method registry we're building 
>> (<http://greenbytes.de/tech/webdav/draft-ietf-httpbis-method-registrations-00.html>) 
>> will tell implementers that PROPFIND is safe -- that should be 
>> sufficient for not requiring invalidate, right?
> 
> The issue with this is that the implementer must care to look up the
> PROPFIND method and special-case it in the implementation.

Yes. But at least there'll be a single place to lookup that information.

> The default for anything non-GET/HEAD is invalidate, and there is no way
> that's going to change. The opposite would be very dangerous to any new
> method added.

I disagree with the "very" dangerous. Only one cache will see the method 
invocation, so other caches will not be invalidated either way.

BR, Julian
Received on Wednesday, 19 November 2008 07:09:26 GMT

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