amazon web services - AWS automatic failover over different region -

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is possible automate failover plan on different regions in aws, example us-east , california or singapore?

aws doesn't have many multi-region services, , can't fail ec2 instances different regions standard offerings. @ 2012 aws re:invent conference said prefer multi-az within single region because latency between azs low, , different azs still several miles apart, isolating them each other.

they recommend using separate regions serve users in different areas. that's different failing over. failing on north america asia doesn't seem solution normal use cases. neither region serve users on opposite continent well.

that said, can kind of using round-robin dns. if you've got server in california address ip1 , server in singapore address ip2, advertise address mywebsite.mydomain both ip1 , ip2. through testing i've found recent web browsers randomly try 1 address and, if can't connected to, try other one. looks pretty seamless user. you're still routing american clients singapore, , vice versa, @ random.


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