Running delayed jobs on Heroku for free

Question

Is it possible to run delayed jobs on Heroku for free?

I\'m trying to use delayed_job_active_record on Heroku. However, it requires a

Answer 1

If you only have one web worker, Heroku will sleep it if it's inactive for an hour.

Also, Heroku will reboot all dynos at least once a day.

This makes it hard to do a within-ruby scheduler. It has to at least use persistent storage (e.g. database).