Maintenance Schedule for 2009

[App Engine Team]

We've recently developed better visibility into our maintenance
schedule. This information isn't perfect, but we've heard from many
developers that they'd like more advance notice from App Engine about
when these maintenance periods will occur. Therefore, we're happy to
announce below the preliminary maintenance schedule for the rest of
2009:

- Tuesday, September 22nd, 5:00 PM Pacific Time
- Tuesday, November 3rd, 5:00 PM Pacific Time
- Tuesday, December 1st, 5:00 PM Pacific Time

We don't expect this information to change, but if it does, we'll
notify you (via the Downtime Notify Google Group) as soon as possible.
The App Engine team members are personally dedicated to keeping your
applications serving without interruption, and we realize that weekday
maintenance periods aren't ideal for many. However, we've selected the
day of the week and time of day for maintenance to balance disruption
to App Engine developers with availability of the full engineering
teams of the services App Engine relies upon, like GFS and Bigtable.
In the coming months, we expect features like Megastore replication to
help reduce the length of our maintenance periods.

See more details here:
http://googleappengine.blogspot.com/2009/09/migration-to-better-datastore.html