Question

I have a Mailman server script that checks for incoming email and loads it into the rails app database. The script (should) run continuously and checks for new email every 60 seconds. I was able to run the script on Heroku using heroku run:detached script/mailman_server, but when I checked back a few days later it wasn’t running. How can I ensure it is always running?

Answer 1

You should use the Cedar stack, and add a Procfile. Eg. Something like…

web: bundle exec unicorn -p $PORT -c ./unicorn.rb
mailman: bundle exec script/mailman_server

Then:

heroku ps:scale mailman=1

On the command line will add one worker. However. Should the worker encounter some kind of error and close you would need additional config to restart it.