[Mod_gzip] "mod_gzip_send_vary=Yes" disables caching on IE? (1.3.26.1a)

[Robert Collins]

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On Tue, 2002-12-10 at 09:37, TOKILEY@aol.com wrote:
>=20
> > Robert wrote
> >
> > I did (answer the question). The paragraph I acked is 100% correct.=20
> > Squid will cache and revalidate before serving responses with Expires: =
-1.
> >
> > Rob
>=20
> Roger that.
> Thank you one more time.
>=20
> My bad... It took 2 reads to realize you were 'Acking' the entire
> statement and not just the second part.
>=20
> All I can say is... there a LOT of people who don't know this.
>=20
> It is SOP to send "Expires: -1" if you want to 'stop a document
> from being cached by anyone". Very few people realize that
> it's actually getting written to disk anywhere because it would
> apparently violate the "principle of least astonishment" to=20
> think otherwise.

All I can say is "They should read the spec." IIRC even HTTP/0.9 had the
same behaviour. There are *explicit* means for a client to get a non
cached response (vs a semantically fresh response), and for a server to
prevent caching and/or storage. See my earlier emails for the server
mechanism.

Rob


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