On Sat, Jun 30, 2012 at 4:45 PM, Bryan Horstmann-Allen < bdha@mirrorshades.net> wrote:
Explain Netflix and Heroku last night. Both of whom architect across multiple AZs and have for many years.
The API and EBS across the region were also affected. ELB was _also_ affected across the region, and many customers continue to report problems with it.
We were told in May of last year after the last massive full-region EBS outage that the "control planes" for the API and related services were being decoupled so issues in a single AZ would not affect all. Seems to not be the case.
Just because they offer these features that should help with resiliency doesn't actually mean they _work_ under duress. --
But in netflix case, if they architected their environment the way they said they did, why wouldnt they just fail over to us-west? especially at their scale, I wouldn't expect them to be dependent on any AWS function in any region. Mike