Simple approach to launching background task in Django
Question:
I have a Django website, and one page has a button (or link) that when clicked will launch a somewhat long running task. Obviously I want to launch this task as a background task and immediately return a result to the user. I want to implement this using a simple approach that will not require me to install and learn a whole new messaging architecture like Celery for example. I do not want to use Celery! I just want to use a simple approach that I can set up and get running over the next half hour or so. Isn’t there a simple way to do this in Django without having to add (yet another) 3rd party package?
Answers:
Just use a thread.
import threading
t = threading.Thread(target=long_process,
args=args,
kwargs=kwargs)
t.setDaemon(True)
t.start()
return HttpResponse()
See this question for more details:
Can Django do multi-thread works?
If you’re willing to install a 3rd party library, but you want something a whole lot simpler than Celery, check out Redis Queue. It does require Redis, which is pretty easy in itself, but that can provide a lot of other benefits as well.
RQ itself has almost zero configuration. It’s startlingly simple.
References:
Have a look at django-background-tasks – it does exactly what you need and doesn’t need any additional services to be running like RabbitMQ or Redis. It manages a task queue in the database and has a Django management command which you can run once or as a cron job.
I have a Django website, and one page has a button (or link) that when clicked will launch a somewhat long running task. Obviously I want to launch this task as a background task and immediately return a result to the user. I want to implement this using a simple approach that will not require me to install and learn a whole new messaging architecture like Celery for example. I do not want to use Celery! I just want to use a simple approach that I can set up and get running over the next half hour or so. Isn’t there a simple way to do this in Django without having to add (yet another) 3rd party package?
Just use a thread.
import threading
t = threading.Thread(target=long_process,
args=args,
kwargs=kwargs)
t.setDaemon(True)
t.start()
return HttpResponse()
See this question for more details:
Can Django do multi-thread works?
If you’re willing to install a 3rd party library, but you want something a whole lot simpler than Celery, check out Redis Queue. It does require Redis, which is pretty easy in itself, but that can provide a lot of other benefits as well.
RQ itself has almost zero configuration. It’s startlingly simple.
References:
Have a look at django-background-tasks – it does exactly what you need and doesn’t need any additional services to be running like RabbitMQ or Redis. It manages a task queue in the database and has a Django management command which you can run once or as a cron job.