Combined worker+beat dyno for free tier

[ukch]

Heroku's free tier only allows one worker dyno to run at a time. Since celery can process multiple queues in the same process, I would suggest adding a combined process to Procfile that runs both worker and beat queues at once.

[edorgeville]

👍

[Jaspaul]

👍

[edorgeville]

I used this similar project that uses only one dyno : https://github.com/alex88/sentry-heroku

[ukch]

I have tested the above PR on the Heroku free tier, and it seems to work without issues. To use it run heroku ps:scale worker=0 beat=0 worker_plus_beat=1.
Note: This PR also limits the number of processes for web and worker_plus_beat to 1. This fixes the 'too many connections' error on the Redis free tier.

[MechanisM]

This is better solution #20 (comment) because it keeps awesome uwsgi and one line in Procfile.