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From: Henrik Nordstrom <henrik@henriknordstrom.net>
Date: Thu, 28 Jun 2007 22:39:02 +0200
To: Larry Masinter <LMM@acm.org>
Cc: ietf-http-wg@w3.org
Message-Id: <1183063142.24657.17.camel@henriknordstrom.net>
tor 2007-06-28 klockan 12:06 -0700 skrev Larry Masinter:
> What's the difference between a PUT that includes a header that says
> "return the body" and a pipelined GET? Why is the pipelined
> GET an 'extra round trip'?

There is a race window between the two, with no guarantee that there
hasn't been any modification between the two.

Also, if there is proxies involved the situation gets even messier, and
it's possible the GET gets executed before the PUT is complete, or might
even get the old entity from a cache somewhere. While the PUT
invalidates the caches the PUT goes via, there is no guarantee the GET
will travel the exact same path..


Received on Thursday, 28 June 2007 20:39:13 UTC

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