Question: I am mulling over a web-app in Perl that will allow users to create bug monitors. So essentially each "bug watch" will be a bug ID that will be passed to a sub routine along with the "sleep" time, and once the "sleep time" is over it must recur without blocking the parent process or the peer processes.

* I tried [Schedule::Cron](http://search.cpan.org/dist/Schedule-Cron). It supports cron-like format but here the arguments to the subs must be simple scalars hence I ruled it out.
* POE/Coro seem to be another options but I don't have much idea about it/ :(

Any insights ? TIA

-Matt.

Answer: 
What's wrong with Schedule::Cron? You can make any subroutine reference that you like, so you can make closures that refer to the extra or specific data you need. You don't have to rely on the argument list. Was there something else about the module that didn't work for you?
If u do decide to look into [Coro](http://search.cpan.org/dist/Coro/Coro.pm) then it might be worth having a look at [Continuity](http://search.cpan.org/dist/Continuity/lib/Continuity.pm) as this is a web library/framework built around Coro. 

Also take a look at [Squatting](http://search.cpan.org/dist/Squatting/lib/Squatting.pm) web microframework which "squats" on top of [Continuity by default](http://search.cpan.org/dist/Squatting/lib/Squatting/On/Continuity.pm). The Squatting distro comes with some examples of using [Coro::Event](http://search.cpan.org/dist/Coro/Event/Event.pm).