We’ve been working hard to get all of our apps on to Apps V2. While lots of apps have been converted without a hitch, we found some that were incompatible for one reason or another. One of those reasons was that Apps v1 supported autoscaling, meaning that allocs could automatically be created and destroyed based on traffic being sent. We don’t have that exact same feature ready for Apps V2, but we have a pretty similar one called autostart/stop. In order to make sure that autoscaled apps will still scale up and down, we create
autoscale_max - autoscale_min number of machines configured to
autostop, as well as
autoscale_min number of machines that will just always stay running.
migrate-to-v2 feature should be available in