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Avoiding Downtime When Cloud Services Fail
http://www.infoq.com/news/2012/07/Avoiding-Downtime-in-Cloud
摘錄：
Another AWS outage hit several large websites
and their services last week. What can be done to avoid downtime?
Architect for failover not just for scale.
According to the AWS Service Health Dashboard
a number of cloud services –EC2, EMR, RDS, Elastic Beanstalk-
running on Amazon East Region Availability Zone (North Virginia)
were down from approximately 7:25 PM PDT/June 29th to 3 PM PDT/June
30th, affecting many companies, their services and websites,
including Netflix, Instagram, Pinterest, and Heroku.
According to an Amazon report, the main culprit was
a power event “triggered during a large scale electrical storm
which swept throughout the Northern Virginia area”
during a violent storm that hit Eastern US that Friday night
and killed 13 people, leaving 3 million without power.
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