Edge-Caching

• Content Delivery Networks: DNS-Based Routing, Anycast, Edge Caching, and the Economics of CDN Peering · 2026-03-04

  How Akamai, Cloudflare, and Fastly keep the web fast — DNS-based request routing, anycast IPs, consistent hashing at the edge, and the business of CDN peering that makes it all economically viable.