 |
|
NONE: Re: ONLINE-ADS>> Caching, IE and Guaranteed Impressions
Re: ONLINE-ADS>> Caching, IE and Guaranteed Impressions
Michael Kunze (mkunze_at_keepit.com)
Tue, 08 Apr 1997 14:09:36 +0200
Hi all,
the caching mechanism of IE 3.01 is really hard to deal with. IMHO, it
is one of the most idiotic cache algorithms i ever came across. IE
caches images on URL basis, never touching an image again if it has
cached its URL. This is against all specs in HTTP 1.0 and 1.1. (BTW,
Navigator does an conditional reguest, as it should be).
I think the folks at MS needed to pretend some speed advantage over
Navigator, so they came out with this cache strategy.
The only thing you can do to fool IE is to add some randomness to the
URL of your ads (the 'pragma: no cache'-header doesn't work, we've tried
this already). You could switch to Server-Side-Includes for
URL-randomization or take CGI or JScript/Javascript for inserting images
with random URLs into your pages. Just adding an ? to the images URL is
not enough, IE just cuts everything after the questionmark and caches
the rest. The problem with random URLs is that the cache of your
visitors slowly but surely fills up with the same images carrying
differents URLs. Thats what i call hard disk pollution. But on the other
hand, this is Microsofts fault, not yours.
Hope this helps
Michael
HOW TO JOIN THE ONLINE ADVERTISING DISCUSSION LIST
|
With an archive of more than 14,000 postings, since 1996 the
Online Advertising Discussion List has been the Internet's leading forum focused on professional discussion
of online advertising and online media buying and selling strategies, results, studies, tools, and media
coverage. If you wish to join the discussion list, please use this link to sign up on the home page of the Online Advertising Discussion List. |
|
|
Online Advertising Industry Leaders:
Local SEO with Video
Houston SEO
Houston Web Design
Add your company...
|
