Yet another argument in favor of Degraded Operations Mode (http://mvdirona.com/jrh/perspectives/2008/01/22/DegradedOperationsMode.aspx) emerged last week. All of Amazon AWS (S3, SimpleDB, Simple Queuing Service, EC2, etc.) down for several hours last week: http://mvdirona.com/jrh/perspectives/2008/02/15/DowntimeAmazonS3SimpleDBSQS.aspx. The outage was reportedly due to a authentication storm: http://www.highscalability.com/s3-failed-because-authentication-overload (Mike Neil sent this my way). Remember, you’ll never have the capacity for the…

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