Decoupling & Messaging

SQS, SNS, EventBridge, and loose coupling patterns that absorb failures.

Domain 2: Design Resilient Architectures · 26% of exam · 5 questions

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Domain 2: Design Resilient ArchitecturesDecoupling & MessagingeasySingle choice

A payment API sometimes fails when the downstream invoice-generation service is overloaded or unavailable. Orders must not be lost. Which change makes the architecture resilient?

Increase the API timeout so requests wait longerPlace an SQS queue between the API and the invoice service so requests are durably bufferedMove both components onto the same EC2 instanceAdd a CloudFront distribution in front of the API