I run an app on GAEJ, using JDO. It's been live and has had paying customers for over a year now. It using master/slave but I'm considering migrating to HRD.
Having just watched the "more 9's please" vid: http://www.google.com/events/io/2011/sessions/more-9s-please-under-the-covers-of-the-high-replication-datastore.html I'm considering taking the advice and putting pretty much all of my entities into a single group. It is after all an enterprise app - so performance should be fine for my throughputs. So my question is: - what happens to existing data if I go and change the entity group of an entity? Or more specifically do I need to manually migrate data to a different node if I wanted to update an entity's group? - and a secondary related question. It's a multi-tenancy application, so I'm assuming that data in different namespaces is automatically separated into different entity groups even if they belong to an entity that is part of a group. ie Reservation and ReservationDetail are part of the same entity group. However I assume that there is a different entity group for these in each of my namespaces? -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/usFLN5Jx3kgJ. 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.
