Sounds like one of the scheduled maintenances. You might find these links helpful: 1. Tips on graceful degradation for your app (Java specific): http://code.go

Sounds like one of the scheduled maintenances. You might find these links helpful: 1. Tips on graceful degradation for your app (Java specific): http://code.google.com/appengine/docs/java/howto/maintenance.html http://code.google.com/appengine/docs/java/howto/maintenance... 2. Scheduled Maintenance Calendar: https://www.google.com/calendar/b/0/embed?src=4chlpo92ci2f54c2u21shbjk9o@group.calendar.google.com&ctz=America/Los_Angeles&gsessionid=OK https://www.google.com/calendar/b/0/embed?src=4chlpo92ci2f54... 3. Downtime Notification Group / Mailing List: https://groups.google.com/forum/?fromgroups#!forum/google-appengine-downtime-notify https://groups.google.com/forum/?fromgroups#!forum/google-ap...