CDN for Engineers: Beyond Static Caching

Understand how CDNs actually work in production — edge caching, origin offload, invalidation, edge security, and dynamic content acceleration — so you can reason about CDN configuration and debug edge-related issues with confidence.

3 sections · 7 lessons

Course outline

Core Caching Mechanics

  1. Edge Caching and Points of Presence
  2. Origin Offload and Cache Hit Ratio
  3. TTL and Cache Invalidation

Beyond Caching

  1. Edge Security and DDoS Mitigation
  2. Dynamic Content Acceleration

Common Pitfalls

  1. Cache Key Misconfiguration
  2. Eventual Consistency in Purge Propagation

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