I use <CFHEADER name="Cache-Control" value="no-cache"> in EVERY one of my
pages (Maybe putting that in the application.cfm would reduce the effort,
but I haven't tried. It is now in my template file.)
But beware: If you insert such thing in your pages, you will have to deal
with an obnoxious back button problem related to forms. Suppose the
following scenario:
1. Page a.cfm contains a <cfform> with POST and a bunch of fields. Its
action points to b.cfm
2. b.cfm does a database insert with the previous content. It then says
"Thanks. please click here to return to your main page" which is c.cfm
3. You press your link and end up in c.cfm
So far so good. Nothing is cached. Everyone is happy.
BUT now press the browser's back button to go back to b.cfm, and bingo:
"This page cannot be shown without being resent" (or something of that
flavor) and if you press the refresh button a duplicated record is inserted.
The solution I found for the back button when "no-caching", includes a lot
of <cflocation>s in all the b.cfms of the project, so that the page that
ends in the user's browser knows nothing about form fields. Believe me, it
gets boring.
I guess what I am saying is that if you introduce "no caching", make sure
you test those darn back buttons... I was surprised at how many people
relies on them.
<Jaime/>
> -----Original Message-----
> From: Brian bouldernet [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, October 11, 2000 8:18 AM
> To: CF-Talk
> Subject: More AOL mayheim NO!!!!!!!!!!!
>
>
> I think to have any knowledge of AOL's cache control we have to a
> subsidiary
> of AOL/Time Warner or a possible investment...
>
> After testing HTTP control is in use for all intensive purposes. But it
> seems the caching only start for a 6 hour period on that subnet.. For
> instance if you dial up and at the time you have IP 1.1.1.1 the
> cache/proxy
> server 1.1.1.2 has it for 6 hours where http caching is not listed. If you
> then dialed up and got IP 2.2.2.1 you wouldn't see the 5 hour 59 min. old
> data because 2.2.2.2 had cached it again...
> SAFE way:
> Use a HTTP control based caching...
>
>
> For more info:
> http://webmaster.info.aol.com/caching.html
> http://www.wdvl.com/Internet/Cache/index.html
> http://www.wdvl.com/Internet/Cache/ref.html
> http://ircache.nlanr.net/Cache/
>
>
> ----- Original Message -----
> From: Deanna L. Schneider <[EMAIL PROTECTED]>
> To: CF-Talk <[EMAIL PROTECTED]>
> Sent: Wednesday, October 11, 2000 9:02 AM
> Subject: Re: AOL mayheim
>
>
> > I think AOL might be doing something funky with their caching servers
> where
> > dynamic content is concerned, anyway. AOL is hitting our server every
> three
> > seconds. Now, we're not that popular of a site, and it's used mostly by
> > internal folks (who do not have AOL accounts). AOL said it's because we
> have
> > a dynamic site, so they hit it more often. Go figure. (Our server admin
> did
> > actually speak to a human at AOL, but as far as I know, the frequency of
> > hits has not gone down. We've resorted to scheduling our front
> page to run
> > once a day and write out as html instead of cfm, to minimize some of the
> > load on the cf server. But, that only works if your content only changes
> > daily, like ours.)
> >
> > -d
> >
> >
> >
> > ************************************************************
> > Deanna Schneider
> > Interactive Media Developer
> > UWEX Cooperative Extension Electronic Publishing Group
> > 103 Extension Bldg
> > 432 N. Lake Street
> > Madison, WI 53706
> > (608) 265-7923
> >
> >
> >
> >
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