Performance & Optimization

CDN Basics

Content Delivery Network setup and configuration.

What is CDN?

CDN Benefits
• Faster content delivery (edge servers)
• Reduced bandwidth costs
• Better availability & redundancy
• DDoS protection
• SSL/TLS termination

Popular CDN Providers

Cloudflare
Free tier, DDoS protection, DNS

AWS CloudFront
Integrated with AWS services

Fastly
Real-time purging, edge computing

Akamai
Enterprise-grade, largest network

BunnyCDN
Affordable, fast, simple setup

CDN URL Patterns

Subdomain
https://cdn.example.com/assets/logo.png

CDN domain
https://d1a2b3c4d5.cloudfront.net/logo.png

With versioning
https://cdn.example.com/v2/assets/logo.png

Cache Control for CDN

Long cache for static assets
Cache-Control: public, max-age=31536000

CDN-specific headers
CDN-Cache-Control: max-age=86400
Surrogate-Control: max-age=86400

Bypass CDN for dynamic content
Cache-Control: no-cache, no-store