CDN and Edge Computing Patterns

Calendar February 22, 2026
Serverless
Intermediate, Advanced
Cdn-Configuration, Edge-Function-Development, Cache-Strategy-Design, Waf-Rule-Management, Geolocation-Routing
Cdn, Edge-Computing, Cloudflare-Workers, Lambda-Edge, Vercel, Cache-Invalidation, Origin-Shield, Waf, Geolocation, Ab-Testing, Edge-Functions
Cloudflare, Cloudflare-Workers, Aws-Cloudfront, Lambda-Edge, Vercel, Fastly, Terraform

CDN and Edge Computing Patterns#

A CDN (Content Delivery Network) caches content at edge locations close to users, reducing latency and offloading traffic from origin servers. Edge computing extends this by running custom code at those edge locations, enabling request transformation, authentication, A/B testing, and dynamic content generation without round-tripping to an origin server.

CDN Cache Fundamentals#

Cache-Control Headers#

The origin server controls CDN caching behavior through HTTP headers. Getting these right is the single most impactful CDN optimization.