Re:The Unofficial Guide to Migrating Off of Google App Engine
by nl on Monday February 28, 2011 @09:13PM
(#2273938)
Java is heavy, but there are ways to work around it.
The worst offender is the data access libraries. JPA is bad, JDP slightly better, but something like Objectify works really well.
Typically, Spring isn't the problem (I guess it could be if it is doing a lot of classpath scanning stuff or something though)
I heard stories where some people that use Spring MVC would have their request fails because the call stack is too deep.