This is where Appengine shines - it scales painlessly, so there won't be any hurt (apart from being billed for the resources). This scalability comes at the co

This is where Appengine shines - it scales painlessly, so there won't be any hurt (apart from being billed for the resources). This scalability comes at the cost of a wee paradigm shift from relational database to datastore mindsets, but is well worth it. Developers can do what they do best instead of having to become system architects and admins.