I am developing a GWT project that is hosted in GAE, and I would like to use an external MySQL database for persistence, instead of Datastore. Is it possible to do this? Is it compatible with RequestFactory?
Thanks
GAE offers the ability to use Google Cloud SQL instead of the High Replication Datastore. RequestFactory does not make assumptions about the datastore you are using so there should not be any problem using it with Google Cloud SQL. You can also use both at the same time.
You cannot connect to a database server hosted anywhere else, unless you would create an interface that works on the HTTP level... which sounds like a really bad idea for several reasons.