This is a demo application for how to cut costs on Heroku with AutoIdle in the article https://blog.mikemwanje.dev/autoidle-cuts-your-heroku-bill-by-auto-putting-your-staging-and-review-apps-to-sleep. Start fom the start branch as you follow along untill the code version in the main branch is reached.
Why do you think that https://github.com/julie-ng/nodejs-certificate-auth is a good alternative to autoidle-saving