hey stupid it's the sql and is better when it's free like free s_x

google allows you to use sql now but only for enterprise
you know you can build a simple machine with firebird sql and deploy it on amazon ec2
or in your private cloud for free , in fact you can build an infinity of machines and use a better framework than the one from google and i talk about django and you don't need their restrictions
ahh and for the java is the same , use tomcat (jruby) -> firebird + s3 and seems that is better for the long term than what google allows you for a premium price