Thanks, Eric. We want to use AppEngine but obviously need to have some persistent storage. This wp-stateless plugin looks much better than the one which came bundled with the WP distribution – tutorial / Git example which I have been working on. I will put a link below in case you want to see it.
If this ever does support AppEngine we would take another look.
https://cloud.google.com/php/tutorials/wordpress-app-engine-flexible
