What is the history of CDN technology?
CDN 技术的发展史
Content delivery network (CDN) technology emerged in the late 1990s with the focus on faster content delivery over the internet:
First generation
First-generation CDN services focused on networking principles of intelligent network traffic management and data centers for replication.
Second generation
Second-generation CDNs arose in response to the rise of audio and video streaming services, especially video on demand and news on demand. The technology also evolved to solve new challenges in content delivery on mobile devices. Companies used cloud computing techniques and peer-to-peer networks to accelerate content delivery.
Third generation
Third-generation CDNs are still evolving. AWS is driving innovation as one of the leading CDN service providers in the world. With most web services centralized in the cloud, the focus is now on edge computing—managing bandwidth consumption using smart devices that communicate intelligently. Autonomous and self-managed edge networks might be the next step in CDN technology.
内容分发网络（CDN）技术兴起于 1990 年代后期，侧重于加快通过互联网分发内容的速度：
第一代
第一代 CDN 服务专注于智能网络流量管理和用于复制的数据中心的联网原理。
第二代
第二代 CDN 的出现是为了应对音频和视频流媒体服务（尤其是视频点播和新闻点播）的兴起。该项技术还不断发展，以解决在移动设备上进行内容交付的新挑战。各公司使用云计算技术和对等联网来加速内容交付。
第三代
第三代 CDN 仍在不断发展。作为全球领先的 CDN 服务提供商之一，AWS 正在推动创新。由于大多数 Web 服务集中在云中，因此现在的重点是边缘计算，即使用智能通信的智能设备管理带宽消耗。自治和自我管理的边缘网络可能是 CDN 技术的发展方向。