Domain 2.4: Reliability Requirements — AWS SAP-C02 Practice Question 53

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Identify the caching layer that absorbs read-heavy traffic spikes at the edge.

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C.Place Amazon CloudFront in front of the ALB to cache static and dynamic content.✓ Correct

For read-heavy, unpredictable traffic spikes (like breaking news), a Content Delivery Network (CDN) like Amazon CloudFront is the best solution. It caches the content at edge locations globally, absorbing the traffic spike before it ever reaches the origin infrastructure.

Common mistakes

Trying to scale the backend (Auto Scaling/RDS) instead of caching at the edge.

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Common mistakes

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