Re: HTTP Caching Model?
Ari Luotonen (luotonen@neon.mcom.com)
Thu, 15 Dec 1994 18:58:45 -0800 (PST)
> The only thing that it _must_ do is issue _some_ URI: header with
> a vary parameter if it's got variants. That's enough to prevent
> proxies from jumping to conclusions.
Ok, very good.
> If the server gives an Expires: header, the proxy can conclude that
> the variants are stable until then.
Not necessarily -- take a Stephen King book "Killer Web". It's first
published in English and put online. It's static data and practically
never expires. A month later they publish it in Finnish, and a month
after that in French. This still shouldn't impose that the English
version expires once a month. And you can't know of the translation
schedules beforehand in the first place anyway.
Ok, so King probably would make this interactive book in which the
plot changes as a function of time, number of people killed, and
whether IT really died in part two...
Cheers,
--
Ari Luotonen http://home.mcom.com/people/ari/
Netscape Communications Corp.
650 Castro Street, Suite 500
Mountain View, CA 94041, USA