I must say that this question opens a veritable can of worms as there are many frameworks that exist for the maintenance of state that allow for not only the persistence of scalar variables, but also complex data structures. The latter part of which in itself can be an issue unto itself - For example for serialising or representing complex data structures, there is Storable, Data::Dumper and Data::Denter.

As for session and state management, there is Apache::Session (and the easy front-end to it, CGI::Session), Apache::SessionX, CGI::MxScreen and Bundle::OpenInteract.

Good luck.

 

perl -e 's&&rob@cowsnet.com.au&&&split/[@.]/&&s&.com.&_&&&print'