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Stage 1 · Foundations

Edge & Caching

Why far servers feel fast, where edge rendering backfires, and how one cache expiry can take down an AI app.

You'll be able to: Explain latency, CDNs and cache failure modes, and pick the right fix.

0 of 2 done
  1. 1 60-sec Short 55 sec Failure mode + fix CDN Cache Stampede A CDN protects your expensive origin only while the cache is warm. When a hot key expires, collapse the misses into one fetch and serve stale content while it refreshes.
  2. 2 Deep dive 7 min Failure mode + fix Why CDNs Make Far Servers Fast Light can't go faster, so a CDN makes the trips across the planet shorter and fewer.
  3. Coming soonOrigin Shield explainedAnnounced at the end of an episode in this track. Subscribe to catch it.
  4. Coming soonHow Load Balancers Pick a ServerAnnounced at the end of an episode in this track. Subscribe to catch it.
Next stage Decision Models