CDN.
also: content delivery network · CDNs · PoP · PoPs · point of presence · points of presence · edge location · edge locationsA geographically distributed network of edge servers that caches content close to users, cutting latency and offloading the origin.
the two-minute refresher
- Users connect to the nearest edge location (PoP) instead of crossing the world to your origin.
- A cache hit at the edge is served directly; a miss goes to the origin once and is cached for the next user.
- Cache static assets and cacheable responses; keep personalised or private data off shared caches.
- Control it with Cache-Control headers, versioned URLs and purges when content changes.