resque-fairly

https://github.com/openlogic/resque-fairly

Normally resque processes queues in a fixed order. This can lead to jobs in queues at the end of the list not getting process for very long periods. resque-fairly provides a mechanism where by workers are distributed across the set of queues with pending jobs fairly. This results in a much more predictable mean time to handling for jobs in queues that are not the first in the list.