Content Delivery Networks: Speeding Up the Internet
Content Delivery Networks: Speeding Up the Internet Content Delivery Networks, or CDNs, speed up the web by storing copies of your site’s files on servers around the world. When a user opens a page, the CDN tries to serve images, scripts, and pages from the nearest edge server. This shortens travel distance, lowers latency, and makes pages feel faster even for visitors far away. How it works: edge servers cache static files like images, CSS, and JavaScript. If the file is in cache and fresh, it is sent directly. If not, the edge fetches it from your origin server, forwards it to the user, and saves a copy for the next request. Many CDNs also handle dynamic content by smart routing and light processing at the edge, so personalized data can travel quickly while keeping security high. ...