GAE is still having serious post-maintenance hiccup. My cron jobs and
deferred tasks essentially stopped executing since 6:20pm, the time
maintenance was supposed to be done. Plus, we can not do deployment at this
moment. These kind of maintenance nightmare should not happen again.

This should be a big lesson for GAE. People including me have good trust on
Google and GAE team. You guys should do the best to live up to people's
expectation. Otherwise, you will lose in the cloud computing game.

One experience that I learned when I worked for Salesforce.com may help the
GAE team next time. In Salesforce.com, a major product release or scheduled
maintenance usually happen only to a portion of their data center, so that:
1, a majority of the customer base won't get affected if  something bad
happen. 2, most of the time, traffic can get redirected to the old portion
of data center if the upgrading portion has problem.

Alan
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