> As well you shouldn't. If you remove the headers that prevent caching you
> will be in serious trouble. Consider what would happen if a proxy server
> cached any of the pages. That means the server isn't actually being
> connected to, which means your session isn't being updated. It also means
> you're probably sharing a session with everyone on your side of the proxy
> cache. Now consider that most Internet users are using ISPs with a proxy
> cache. AOL uses one.
>
Here's my experiment. I use webvan.com and amazon.com as examples.
Let's look at webvan.com
1) Turn off cookies.
2) Go to www.webvan.com
3) It is funny how you can't get in.
Webvan.com requires you to use cookies.
Let's look at amazon.com
Scenario 1:
1) Turn off cookies.
2) Go to www.amazon.com
3) Add stuff to baskets, view baskets, add stuff to basket, view basket.
4) Click back button four times, and click forward button four times.
Looks like amazon.com did not send that no-cache header. It seems like my
local cache server caches amazon.com pages. And sessions are passed from
one page to the next.
This is to say, if you want to run e-commerce, make sure customers enable
cookies. Beside AOL users probably don't know how to turn off cookies.
Kent
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