Re: I want have "Last-modified:" in HTTP/1.0 headers

Marc VanHeyningen <>
From: Marc VanHeyningen <>
Subject: Re: I want have "Last-modified:" in HTTP/1.0 headers 
In-reply-to: Your message of "Fri, 12 Nov 1993 11:40:01 PST."
Date: Fri, 12 Nov 1993 15:43:33 -0500
Message-id: <>
Thus wrote: Steve Putz
>Beware of HTTP servers that are really *gateways* to information you
>may not want to cache.  I have two such servers:
>Both are front ends to large databases where it makes little sense to
>cache.  However both servers also have a small and fairly static
>hierarchy of HTML documents as well, under:
>Can your cache server be configured to know the difference?

Short of having every example of a gateway coded in, how could a cache
server possibly tell the difference?

Rhetorical question.  Answer:  The Expires: header.  It's the
responsibility of the server to make available an indication of how
long that information will remain "current".

- Marc
Marc VanHeyningen  MIME, RIPEM & HTTP spoken here