Channel- Can I dynamically adjust the amount of workers?

I'm trying to use Channel on my chat app & APNs(Apple Push Notification service), I'm planning to use 

python manage.py runworker --only-channels = apns

but the APNs will cost lots of time waiting for response and could receive bunch of message at same time, but it didn't cost much time on operation; so, it would be nice if it could automatically increase worker if current worker for this Channel is busy, and close if the worker is finished.

or, is my concept wrong and there's a better way to accomplish the APNs service ? sorry for my english grammar, but this issue is bothering me for a week and I couldn't find any solution. 

thanks for any help.

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