Cloud Computing: How Netflix survived the Amazon EC2 reboot
October 4, 2014
Grazed from ITWorld. Author: Joab Jackson.
Sometimes the best path to success is to learn how to avoid failure. Netflix was able to keep serving its customers while its cloud hosting provider, Amazon Web Services (AWS), rebooted servers, because it had prepared for that happening.
"When we got the news about the emergency EC2 [Elastic Cloud Compute] reboots, our jaws dropped. When we got the list of how many Cassandra nodes would be affected, I felt ill," said Christos Kalantzis, Netflix engineering manager of cloud database engineering, in a Netflix blog post discussing the outage…
Amazon announced to EC2 customers on Sept. 25 that it would be updating its servers and that a small percentage would require a reboot, which could potentially disrupt customer services. AWS did not specify which of their virtual hosts would be rebooted or when. It was revealed later that AWS was fixing a vulnerability in the Xen hypervisor, which underpins EC2…
Read more from the source @ http://www.itworld.com/cloud-computing/440045/how-netflix-survived-amazon-ec2-reboot