First of all, I just wanted to echo Jeff Schwartz's comment. Ikai, I think your response was very well thought out, for a thread which was close to going off-course. You nipped it right in the bud, while being clear about the reasons for careful dialogue. I appreciate that.
I've been following different threads and notes and documentation on HR Datastore. From these, I had also come to the conclusion that the eventual consistency issue was minimal because - The write blocks while a replication to all the other sites is done in parallel - However, other requests that go to the sites might see the old or new data. - However, the stale data only exists until the write returns. - The edge case is if there is a network disconnect with one of the other sites during the replication. Then it may have to catch up later. If this is correct, then in the general scenario, all the sites are consistent when a write returns. Ikai, can you please confirm if this is more or less how it works. If so, then it may help alleviate people's concerns with the HR Datastore. Personally, my only concern with HR Datastore is that it is much more expensive than the MS, and also significantly more expensive than Amazon SimpleDB which promises the same features (HA, replication to multiple sites, etc) but at $0.25 per GB (while app engine charges $0.45 per GB for now). I understand that's a preliminary price till June/July when Google figures out what to charge, but I (and I reckon some other developers) would be more eager to jump on the HR Datastore option if the price difference wasn't so much. P.S. GAE was always cheaper than AWS and provided a richer development environment which made the decision easier for some of us. Just a thought. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
