Oh you're right to push back. I just love saying this nowadays :P Anyway, I haven't used these languages in a long time but the code looked like php to me, though I did notice the .pm file extension and wondered where I've seen it before.
replyPHP has built in session handling and the ability to store them to local, in memory, RDBMS database, or you can implement SessionHandlerInterface, SessionIdInterface with your own custom class.
replyIt's probably the most battle hardened session system ever.