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MemberJanuary 15, 2024 at 5:30 am
Question: A financial firm is designing an application architecture for its online
trading platform that must have high availability and fault tolerance.
Their Solutions Architect configured the application to use an Amazon S3
bucket located in the us-east-1 region to store large amounts of
intraday financial data. The stored financial data in the bucket must
not be affected even if there is an outage in one of the Availability
Zones or if there’s a regional service failure.
What should the Architect do to avoid any costly service disruptions and ensure data durability?
The answer is to enable cross-region replication on the bucket.
OK that’s fine but if you lose an entire region, and that app is only in one region then no one can access that data via the app. So really, your service is in-fact disrupted. Wouldn’t the question be better if it stated that the application is using failover DNS or even latency-based routing (with health checking) to ensure survival of lost region.
- This reply was modified 1 month, 2 weeks ago by Lifelong1250.