[znpy]

Ecs should do what you want, you’re probably using it wrong. You should probably boot the new app first release and then shut down the old one.

In this way whether the startup takes one or 10 minutes is irrelevant

[boronine]

I should have mentioned in my original post that my web server also has a background process which needs to be a singleton. I could split it off into a separate container, but this will require a third container because they need a shared cache that's used for rate limiting. At that point I have little to gain vs. just running a single "web" dyno on Heroku.