Upcoming Datastore Downtime

We have two scheduled upcoming maintenance periods for the Datastore:

• July 7th, 2010 - 5pm-6pm Pacific Time (July 8th, 0:00 GMT) - Later today


• July 14th, 2010 - 5pm-6pm Pacific Time (July 15th, 0:00 GMT)

As part of our on going Datastore reliability work, we'd like to inform developers that during the period between the two maintenance events listed above, we are expecting that Datastore performance will be impacted and applications will see higher read/write latencies. This maintenance and the higher latency in between are an unfortunate, but necessary step in our long-term plan towards completing the work to address the datastore latency issues (as described in our recent blog post). We recognize the inconvenience to applications and their users caused by this. For this reason, we continue to offer free datastore CPU usage until we are confident we have cleared these issues.

You can read more about the currently scheduled maintenance periods on the notification to the Downtime Notify list. As a reminder, be sure to sign up with the Downtime Notify list for alerts and updates on scheduled (or unplanned) maintenance, and follow @app_engine on Twitter for ongoing announcements.