Due to my experience with Python I am currently in need to pick one of task queues solutions available for that language. I am considering Celery (I should mention that I do not use Django and switching to that framework is not an option), Python-RQ(http://python-rq.org/) and Zeromq with pyzmq.
I would be glad if someone could share his/her experiences with those or other task queues in production environment. Right not I am considering strongly python-rq.
Regards