Module 1 · Lesson 1 Preview Beginner

What is a CDN?

10 min read

Content Delivery Networks Explained

A Content Delivery Network (CDN) is a geographically distributed network of servers that work together to deliver content quickly to users based on their location.

Think of it as a network of warehouses strategically placed around the world. Instead of shipping every package from a single central warehouse, you ship from the one closest to the customer.

The Problem CDNs Solve

Without a CDN, every request must travel to your origin server, which might be thousands of miles away from your users. This adds latency and increases load on your infrastructure.

CDNs solve this by caching content at edge locations worldwide, reducing both latency and origin load.

Quick Check

What is the primary benefit of using a CDN?

Correct! Not quite.
Explanation

CDNs reduce latency by caching content at edge servers located close to end users, which also reduces load on the origin server.

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