CDN Caching
CDN caching is a performance optimization technique that stores copies of web content (like images, CSS, JavaScript, and HTML files) on geographically distributed servers called Content Delivery Networks (CDNs). When users request content, it's served from the nearest CDN edge server instead of the origin server, reducing latency and improving load times. This concept is fundamental for scaling web applications globally and handling high traffic efficiently.
Developers should learn CDN caching to enhance user experience by minimizing page load times, especially for global audiences where distance to the origin server causes delays. It's crucial for high-traffic websites, e-commerce platforms, and media streaming services to reduce bandwidth costs and improve reliability by offloading traffic from the origin server. Implementing CDN caching also helps mitigate DDoS attacks and ensures content availability during server outages.