Alright but for your information that post is almost a year old and GAE/J is now much more mature. IMO, a developer should just use what they are more comfortab

Alright but for your information that post is almost a year old and GAE/J is now much more mature. IMO, a developer should just use what they are more comfortable with. Sadly, it looks like the groovy framework has not been tweaked to work well on GAE.