A Content Delivery Network (CDN) is designed to accelerate the delivery of different types of content by caching, optimizing, and distributing it across edge servers worldwide. CDNs are not limited to static assets, they can handle a wide range of content and workloads:
- Static Content: Assets that do not change frequently, such as images, CSS, JavaScript, fonts, and documents, can be cached at edge locations for faster delivery.
- Dynamic Content: While dynamic content (such as personalized HTML pages, API responses, or database-driven queries) cannot be fully cached, it can be accelerated through techniques like TCP optimization, connection reuse, and intelligent routing.
- Video Streaming: CDNs are commonly used to deliver both on-demand and live video. They support adaptive bitrate streaming protocols (such as HLS and DASH), ensuring smooth playback by delivering video segments from the nearest edge server.
- Software Downloads: Large files, such as application installers, patches, updates, and game downloads, can be distributed efficiently using a CDN.
- Web Applications: CDNs enhance the performance of interactive web applications by caching static resources, optimizing API calls, and securing data exchange. This ensures users have a responsive and reliable experience, even during peak usage.