Description:

HTTP is a stateless protocol; a HTTP server closes connection after
serving an object. It retains no memory of the request details and
doesn't relate subsequent requests with what it has already served.

CGI::Persistent solves this problem by introducing persistent CGI
sessions that store their state data on the server side. When a new
session starts, CGI::Persistent automatically generates a unique state
identification string and associates it with a persistent object on
the server. The identification string is used in URLs or forms to
refer to the particular session. Request attributes are transparently
committed to the associated object and the object data is bound to the
query.

CGI::Persistent is derived from CGI.pm. CGI.pm methods have been
overridden as appropriate. Very few new methods have been added.