This is Apache::Session::Lazy.
It is an extension of Apache::Session.
Apache::Session is a persistence framework which is particularly useful for tracking session data between httpd requests. Apache::Session is designed to work with Apache and mod_perl, but it should work under CGI and other web servers, and it also works outside of a web server altogether.
Apache::Session::Lazy extends Apache::Session by opening Sessions only after they are either modified or examined (first read or write access to the tied hash.) It should provide transparent access to the session hash at all times.
INSTALLATION
To install this module type the following:
perl Makefile.PL
make
make test
make install
DEPENDENCIES
This module requires these other modules and libraries in order to be useful:
Apache::Session
COPYRIGHT AND LICENCE
Copyright (C) 2003 Gyan Kapur
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.