Question

A developer runs a media website on an Application Load Balancer backed by EC2 instances. Product images and CSS/JS files rarely change but are requested millions of times daily by users across many countries. Origin CPU is saturated serving these static files, and users far from the region report slow page loads. Which change most effectively reduces origin load and improves global latency for these assets?

Accepted Answer

Place an Amazon CloudFront distribution in front of the ALB and set appropriate cache behaviors and TTLs for the static assets

Answer

Add an Amazon ElastiCache for Redis cluster and have the EC2 instances read the images from the cache before serving them

Answer

Enable API Gateway caching in front of the ALB to cache the static file responses

Answer

Provision Amazon DynamoDB Accelerator (DAX) to cache the image metadata and reduce database round trips