The Minion manpage is a job queue for the https://mojolicio.us real-time web framework with support for multiple backends, such as the DBM::Deep manpage and http://www.postgresql.org.

A job queue allows you to process time and/or computationally intensive tasks in background processes, outside of the request/response lifecycle. Among those tasks you'll commonly find image resizing, spam filtering, HTTP downloads, building tarballs, warming caches and basically everything else you can imagine that's not super fast.