This is a simple app that allows storing data on Google App Engine's datastore and also allows versioning of data.
-
To retrieve the latest version of the data you're storing, do a HTTP GET to
http://your_subdomain.appspot.com/whatever_you_want
-
To write data to storage and increment the version number, do a HTTP POST to the same URL as GET
http://your_subdomain.appspot.com/whatever_you_want
with the POST body being the data you want to store.