Corporate applications run on App Engine. Here's a session from IO where our Corporate Engineering team discusses their experiences: http://www.youtube.com/watch?v=IzxdL4I0xTg
As for your question about idempotence: There may be, but you'll likely get a better answer for this question from the GData team: http://groups.google.com/group/google-help-dataapi Interesting that contact creation isn't idempotent. If it doesn't exist already, for your use case, at least, it could be a good GData feature request to add a UUID to write operations such that after a successful write, writes become invalid for any subsequent call tagged with that UUID. On Tue, Jun 15, 2010 at 2:32 PM, dflorey <[email protected]> wrote: > Hi there, > two quick questions: > - Are there any Google apps (like calendar, contacts etc.) running on > app engine? > - Are there any plans to let GData services participate in a > transaction? > > Right now it's almost impossible to create idempotent tasks when using > certain GData services. > Example: When creating a contact I frequently get timeout exceptions > from the Google contact servers, so I have no clue whether a contact > has been created or not. When the task gets executed multiple times > (for whatever reason), I end up with duplicated contacts. > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-appengine%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > -- Ikai Lan Developer Programs Engineer, Google App Engine Blog: http://googleappengine.blogspot.com Twitter: http://twitter.com/app_engine Reddit: http://www.reddit.com/r/appengine -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
