Cloud
CDN (Content Delivery Network)
A network of servers distributed globally that delivers web content to users from the closest location for faster loading.
A Content Delivery Network (CDN) is a geographically distributed network of proxy servers and data centers that work together to provide fast delivery of internet content.
How CDNs Work
When you host your website on a single server in one location, users far from that server experience slower load times. A CDN solves this by caching copies of your content on servers (called “edge servers” or “points of presence”) around the world.
When a user requests your website:
- The CDN routes the request to the nearest edge server
- If cached content is available, it’s served immediately
- If not, the edge server fetches it from your origin server and caches it
Benefits of Using a CDN
- Faster load times: Content served from nearby locations
- Reduced bandwidth costs: Caching reduces origin server load
- Better reliability: Traffic distributed across multiple servers
- DDoS protection: Many CDNs include security features
- Improved SEO: Page speed is a ranking factor
Common CDN Providers
- Cloudflare (popular for WordPress)
- AWS CloudFront
- Google Cloud CDN
- Fastly
- Akamai
When to Use a CDN
A CDN is beneficial for almost any website, but especially important for:
- Sites with global audiences
- Media-heavy websites (images, videos)
- E-commerce stores
- High-traffic applications
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