> What's the default timeout/expiration for session vars?
Twenty minutes is the default value for default and maximum limits for
session variables in CF Administrator. You can change these default and
maximum values in CF Administrator.
> Also, how do sites with form submissions enable the "Warning:
> Page has Expired" when a user's connection expires, or if the
> user presses the back button?
This is a result of the server saying that a page shouldn't be cached, and
the browser respecting that. There are various HTTP headers and META tags
you can specify to avoid caching. I don't think this has anything to do with
expiring connections, though - HTTP is essentially a connectionless protocol
(this is a slight oversimplification, but useful in this context).
Dave Watts, CTO, Fig Leaf Software
http://www.figleaf.com/
voice: (202) 797-5496
fax: (202) 797-5444
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