from celery home page:
Celery is an asynchronous task queue/job queue based on distributed message > passing. It is focused on real-time operation, but supports *scheduling *as > well. > The execution units, called tasks, are executed concurrently on a single or > more worker servers using multiprocessing, Eventlet, or gevent. Tasks can > execute asynchronously (in the background) or synchronously (wait until > ready).
