CDN Content Delivery Network内容分发网络

最新推荐文章于 2025-05-22 14:15:00 发布

转载最新推荐文章于 2025-05-22 14:15:00 发布 · 646 阅读

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内容分发网络（CDN）是一种全球分布式的代理服务器网络，部署于多个数据中心中，旨在为用户提供高可用性和高性能的内容服务。CDN能够处理互联网上大量的内容类型，包括文本、图形、媒体文件、软件下载、电子商务应用等。

A content delivery network or content distribution network (CDN) is a globally distributed network of proxy servers deployed in multiple data centers. The goal of a CDN is to serve content to end-users with high availability and high performance. CDNs serve a large fraction of the Internet content today, including web objects (text, graphics and scripts), downloadable objects (media files, software, documents), applications (e-commerce, portals), live streaming media, on-demand streaming media, and social networks.

The term CDN means many things to different people and is an umbrella term that covers a lot of different types of content delivery services. Video streaming, software downloads, web and mobile content acceleration, licensed/managed CDN, transparent caching, and services to measure CDN performance, load balancing, multi-CDN switching and analytics and cloud intelligence. It’s a complex ecosystem with a lot of vendors both large and small and some CDN vendors cross over into other industries like security and WAN optimization.^[1]

Content owners such as media companies and e-commerce vendors pay CDN operators to deliver their content to their end-users. In turn, a CDN pays ISPs, carriers, and network operators for hosting its servers in their data centers.