I had a problem recently that boiled down to: A page, which had a link containing session token information (and an absence of no-cache instructions), was called initially without the session token in the URL.
Normally, this would be no problem. That is, until you consider caching servers. (I'd never had to worry about caching servers before, so I didn't really know about the pitfalls they can introduce.) A caching server would cache this page (with the session token-ed link), and serve it to other users on that ISP. This, obviously, leads to a host of problems. If the page had had the session token in the requested URL, there would be no problem, since the caching server would consider this a unique page. So, I fixed the problem (using no-cache header instructions, and some code on page two that detects cached info), and made a mental note never to let a page contain session information without calling it with session information in the URL. Okay, part two: On a new project, it looks like I'm going to be able to count on users having cookies enabled. However, I'm having a difficult time getting my head around how that affects cached pages. Since there's no session information being passed around in the URL, won't the second person from ISP-X see the first person from ISP-X's personalized page? I guess my question is: Can I count on no-cache header instructions to be honored by all caching servers (is it bullet-proof)? Are there any other considerations/ramifications of caching that I might not know about? Thanks, Jamie ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Archives: http://www.houseoffusion.com/cf_lists/index.cfm?forumid=4 Subscription: http://www.houseoffusion.com/cf_lists/index.cfm?method=subscribe&forumid=4 FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Your ad could be here. Monies from ads go to support these lists and provide more resources for the community. http://www.fusionauthority.com/ads.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
