[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 03:44, TOKILEY@aol.com wrote:
> Thanks Rob.
>=20
> This is probably OT for the thread but as long as we are covering
> all these 'caching' issues let me ask you something.
>=20
> Are you saying that when SQUID receives a response that has
> "Expires: -1" in the response headers that it WILL, in fact,
> CACHE it?
>
> Doesn't "Expires: -1" always mean ALREADY EXPIRED
> and "no need to cache it"?

Any Expires date before 'now' means that the object is already stale.
See 14.21 in the RFC. Note that Expires: -1, Expires: 0, Expires: foobar
are all the same - they are invalid values and to be treated as some
arbitrary period in the past.

> Or have people just come to believe it stops 'caching' because
> it just 'looks' that way ( since document is being re-validated
> but it actually DID get written to SQUID's cache? )?

Ack.

Rob


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