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The author (me) is aware that multiple availability zones did in fact go down. Depending on your level of willingness to accept downtime, configuring an app to
by jakeludington 16y ago
The author (me) is aware that multiple availability zones did in fact go down. Depending on your level of willingness to accept downtime, configuring an app to be in US East, California, Ireland, Singapore, and Tokyo (or some combination of those 5 regions, beyond being in several parts of US East) would have avoided an outage completely.
- shubber 16y agoWhat I'm curious about is how to reliably transit service across Regions. ELBs live in a particular Region, so they don't help. You could certainly register multiple ELBs to the same CNAME and do a limited round robin that way. But, even if you manually pulled the record for a downed region, you can't rely on downstream DNS to respect your TTLs. I suppose you'd at least be able to say something like "some of our users" as opposed to "we're completely down." That seems like cold comfort, though.