On Mon, 2 Jul 2012, James Downs wrote:
back-plane / control-plane was unable to cope with the requests. Netflix uses Amazon's ELB to balance the traffic and no back-plane meant they were unable to reconfigure it to route around the problem.
Someone needs to define back-plane/control-plane in this case. (and what wasn't working)
Amazon resources are controlled (from a consumer viewpoint) by API - that API is also used by amazon's internal toolkits that support ELB (and RDS..). Those (http accessed) API interfaces were unavailable for a good portion of the outages. I know nothing of the netflix side of it - but that's what -we- saw. (and that caused all us-east RDS instances in every AZ to appear offline..) -- david raistrick http://www.netmeister.org/news/learn2quote.html drais@icantclick.org