[Zope] Help! Disabling caching for external method

[kosh@aesaeion.com]

On Wed, 16 Jan 2002, Thomas B. Passin wrote:

> Hmm, I use external methods all the time with Zope (various versions on
> Windows) and haven't seen that.  It would be more a browser problem, and
> Netscape is notorious for caching when you don't want it to.
>
> It's possible to put instructions into the page not to cache - but I don't
> remember the details - isn't it a <meta> tag?

I have to disagree with this about netscape. I have tested it a lot and
found that netscape reliably caches pages it is allowed to by spec. What
you need to do is set the If-Modified-Since header in the RESPONSE to the
date when the page changed and netscape will go ahead and fetch a new
version of the page. My problems have been with IE which most of the time
ignores that even when you click refresh. If you need other ways to tell
the browser when to force the page to draw again please look at the http
1.0 and 1.1 specs. However it is worth it to note that IE has about the
worst implementation of those specs I have ever seen in any browser in
history. The bugs it has with content-type and content-disposition are
staggering.