I found a reasonably safe way to use App Engine: -Make the "app" part of a stack, not the entire app. -Only do one task at a time. -Fit the task well within

I found a reasonably safe way to use App Engine: -Make the "app" part of a stack, not the entire app. -Only do one task at a time. -Fit the task well within free quotas. This goes against the nominal model of the service, but it's effective as a way to supplement a stack which needs some "grunt work" offloaded, and if you encounter problems, rewriting elsewhere is not painful.