3 ms·
People often learn the lessons in a hard way: they will keep saving 230k/yr until one day their non-HA bare-metal is down and major customers retreat.
by wbsun 3y ago
People often learn the lessons in a hard way: they will keep saving 230k/yr until one day their non-HA bare-metal is down and major customers retreat.
- christophilus 3y ago> We have a ready to go backup cluster on AWS that can spin up in under 10 minutes if something were to happen to our co-location facility. Sounds like they already have their bases covered.
- threeseed 3y agoStill need to synchronise data, update DNS records, wait for TTLs to expire. HA architectures exist for a reason because that last step is a massive headache.
- quickthrower2 3y agoThey need to do fire drills and practice this maybe daily or at least weekly? Failover being a normal case. Can’t you do failovers in DNS?
- threeseed 3y agoA significant percentage of users will still have their DNS resolver chain caching the old host. Because TTLs are a guide not mandatory. And many companies/ISPs ignore it for cost reasons.
- BackBlast 3y agoYes, you can do it in DNS. Update the record with your new ingress, then wait for the timeout on the old record to assert itself and the new connections move over. Not all DNS servers properly observe caching timeouts, so some customers may experience longer delays before they see it working again.