CDN

CDN


  • Short for content delivery network or content distribution network, a CDN is a global network that caches static content (e.g., images, CSS, and videos) for a website around the world. CDN helps improve the load time of a website by loading the static content from the closest CDN server.

  • For example, someone in India visiting a web server in the United States must wait for each request to travel to and from the United States. Although each request may only be a few hundred milliseconds, a site that makes dozens of requests would increase the overall load time. However, a website utilizing a CDN could make some of the requests to a server closer to the visitor.

  • The picture above is an example of a user in India accessing a server in the United States. Then, they receive the static content (e.g., pictures) from a closer CDN.

    CDN providers

  • Below is a listing of some of the companies who provide CDN solutions.

  • Akamai

  • Amazon CloudFront

  • CacheFly

  • CDN77.com

  • CloudFlare

  • Stackpath

  • Verizon EdgeCast

  • Yottaa


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