Re: mystery caching problem

[Perrin Harkins]

Dondi M. Stroma wrote:
The problem: occasionally, when a user logs in, they end up logging in 
to someone else's account!
[...]
Here's where it get's interesting. CGI.pm has an undocumented method 
called cache() which, if called, outputs the "Pragma: no-cache" header.  
I found it confusing, so just modified my copy of CGI.pm to always print 
Pragma: no-cache whenever the header() method is called. It seemed to 
fix the problem!

Is there a proxy server in front of your mod_perl?  You have to be 
careful to avoid caching of Set-Cookie headers in the proxy.

- Perrin