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AWS Certified Solutions Architect - Associate · AWS
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D bro. Believe
A does not meet the "without impacting existing users" requirement B does not help with writing (DAX caches reads) C does not help with writing (index could increase read performance only) D decouples writing from front-end, which is acceptable because it is "an asynchronous API" anyway
This solution can handle bursts of incoming requests more effectively and reduce the chances of losing requests due to DynamoDB capacity limitations. The Lambda can be configured to retrieve messages from the SQS and write them to DynamoDB at a controlled rate, allowing DynamoDB to handle the requests within its provisioned capacity. This approach provides resilience to spikes in traffic and ensures that requests are not lost during periods of high demand.