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How does a CDN work?
Quick answer
A CDN (Content Delivery Network) speeds up websites by storing copies of their files on servers around the world. When you visit a site, the CDN serves its content from a server near you, cutting the distance data travels and making pages load faster.
Step by step
- It stores copies of site content on servers worldwide.
- It serves files from a server near each visitor.
- Shorter distance means faster load times.
- It also absorbs traffic spikes and some attacks.
People also ask
How does a CDN work?
It caches a site's content on servers around the world and serves each visitor from the nearest one.
Why do websites use CDNs?
To load faster globally, handle traffic surges, and reduce load on the origin server.
What does CDN stand for?
Content Delivery Network.
Part of the guide: How the Internet Works →