1. Static Content Caching

Most efficient for assets that rarely change:

// CloudFront distribution configuration
{
  "Origin": {
    "S3OriginConfig": {
      "OriginAccessIdentity": "origin-access-identity/cloudfront/EXAMPLE"
    }
  },
  "CacheBehavior": {
    "TargetOriginId": "serverless-bucket",
    "ViewerProtocolPolicy": "redirect-to-https",
    "MinTTL": 86400,
    "DefaultTTL": 86400,
    "MaxTTL": 31536000
  }
}

Best for: Images, CSS, JS files, fonts
Cache TTL: 24 hours – 1 year

2. Dynamic Content Acceleration

Optimize serverless API responses:

// Cloudflare Worker
addEventListener('fetch', event => {
  event.respondWith(handleRequest(event.request))
})

async function handleRequest(request) {
  const cache = caches.default
  const url = new URL(request.url)
  
  // Check cache for GET requests
  if (request.method === 'GET') {
    let response = await cache.match(request)
    if (response) return response
    
    // Fetch from serverless backend
    response = await fetch(request)
    
    // Cache for 10 minutes
    response = new Response(response.body, response)
    response.headers.append('Cache-Control', 'max-age=600')
    event.waitUntil(cache.put(request, response.clone()))
    return response
  }
  return fetch(request)
}

Best for: API responses, personalized content
Cache TTL: 1 minute – 1 hour

3. Edge Computing Integration

Run logic at the edge before reaching serverless:

// Vercel Edge Middleware
import { NextResponse } from 'next/server'
import type { NextRequest } from 'next/server'

export function middleware(request: NextRequest) {
  // Authenticate at edge
  if (!request.cookies.has('auth_token')) {
    return NextResponse.redirect('/login')
  }
  
  // Geolocation routing
  const country = request.geo.country || 'US'
  request.nextUrl.pathname = `/${country}${request.nextUrl.pathname}`
  return NextResponse.rewrite(request.nextUrl)
}

Best for: Authentication, bot detection, A/B testing
Execution time: < 50ms per request

AWS: CloudFront + Lambda@Edge

Step-by-step integration:

1. Create CloudFront distribution
2. Set S3 or ALB as origin
3. Configure Lambda@Edge triggers:
   • Viewer Request
   • Origin Request
   • Origin Response
   • Viewer Response
4. Set cache policies:

   # AWS CLI command
   aws cloudfront create-cache-policy 
     --name "Serverless-Optimized" 
     --min-ttl 60 
     --max-ttl 600 
     --default-ttl 300

Cloudflare Workers + Serverless Backend

Integration pattern:

1. Create Cloudflare Worker script
2. Configure routes in Workers dashboard
3. Set environment variables for serverless endpoints
4. Implement caching logic:

   // Cache API responses with validation
   async function handleAPIRequest(request) {
     const cacheKey = new Request(request.url, request)
     const cache = caches.default
     let response = await cache.match(cacheKey)
     
     if (!response) {
       response = await fetch(SERVERLESS_ENDPOINT, request)
       
       // Clone response to cache
       response = new Response(response.body, response)
       response.headers.append('Cache-Control', 'public, max-age=30')
       event.waitUntil(cache.put(cacheKey, response.clone()))
     }
     return response
   }

Learn about advanced Cloudflare Workers patterns.

Vercel Edge Network + Serverless Functions

Vercel’s zero-configuration approach:

• Static assets automatically cached at edge
• API routes use edge network by default
• Customize with next.config.js:

  // next.config.js
  module.exports = {
    experimental: {
      runtime: 'experimental-edge'
    },
    headers: async () => [
      {
        source: '/:path*',
        headers: [
          { key: 'Cache-Control', value: 'public, max-age=3600' }
        ]
      }
    ]
  }