It absolutely has its limitations, but you can certainly enable rollover to prevent dropping requests [1] Note that the default was chosen in a world where it

It absolutely has its limitations, but you can certainly enable rollover to prevent dropping requests [1] Note that the default was chosen in a world where it wasn't natural that 2 versions of an app could be running side-by-side harmoniously, e.g. due to database evolution. [1] https://devcenter.heroku.com/articles/preboot https://devcenter.heroku.com/articles/preboot