Background thing for Rails 3?

Hey people,

I've been looking for a easy and simple background thing for Rails 3 for
more than 3 hours now and couldn't find anything useful.

I've been using Rufus Scheduler before I switched to Rails 3 which
worked like a charm but unfortunately it's not working in Rails 3
anymore.

So basically I only need some Gem that supports something like:
every 1.minutes do
  blah
end

Does anyone know a gem that does this job and works in Rails 3?

Thanks in advance!