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> Approximately 30% of our EC2 instances, which were responsible for running applications, databases and supporting infrastructure (including some components sp
by jscottmiller 14y ago
> Approximately 30% of our EC2 instances, which were responsible for running applications, databases and supporting infrastructure (including some components specific to the Bamboo stack), went offline
Combined with the incident report from amazon, does this mean that 30% of Heroku instances were in a single availability zone? That would be troubling.
- dangrossman 14y agoWhy is that troubling? There are currently 5 AZs in the region (there were fewer when they designed their service), so the best they could possibly do is 20% of their instances in each. Losing 20% of their instances instead of 30% isn't much of an improvement. What they need is failover between regions/clouds and external monitoring, not a slightly better allocation of instances between AWS AZs in one region.
- jscottmiller 14y agoI don't use Heroku, but I would have assumed that they exist in more than one AWS region.
- dangrossman 14y agoThey don't.
- jbaudanza 14y agoAccording to this tweet, they are in 3 AZs. https://twitter.com/heroku/status/219937314749677568 https://twitter.com/heroku/status/219937314749677568
- dangrossman 14y ago3 AZs all in the US-East region. That's consistent with what we're talking about.