Hip Flask forks the Google App Engine Flask Skeleton and adds a little more meat to its bone so that you can get a Flaskproject up and running on the App Engine platform even more quickly.
gae-init: Google App Engine based on Python, Flask, RESTful, Bootstrap and tons of other cool features https://gae-init.appspot.com
Goodbye, Google App Engine
App Engine is optimized for applications with short-lived requests, typically those that take a few hundred milliseconds. An efficient app responds quickly for the majority of requests. An app that doesn’t will not scale well with App Engine’s infrastructure.
The Unofficial Guide to Migrating Off of Google App Engine
One would think that any database backed by Google would be robust. After all, this is the same code powering apps like Gmail. For whatever reason, however, the GAE database has extraordinarily high variance. Requests will inexplicably go from tens to thousands of milliseconds to serve. At a high load (50+ requests/sec), we saw database timeouts tens of times per minute, and often more (every request in a 10-60 sec period would fail).