CDN：加速我们的网络服务.pdf
在正式讲课之前，我们先来看看目前HTTP手头有哪些“武器”。协议方面，HTTPS加强通信链路安全，HTTP/2优化传输效率； 应用方面，Nginx/OpenResty提升网站服务能力，WAF抵御网站入侵攻击。 说到这里，是不是觉得少了点什么？
是的，在应用领域，还缺少一个对外加速HTTP协议的服务。 这就是我们今天要讨论的内容。
CDN（Content Delivery Network或Content Distribution Network），中文名称为“内容分发网络”。
(Before giving a formal lecture, let's take a look at what "weapons" HTTP has on hand.In terms of protocol, HTTPS strengthens the security of communication link and HTTP / 2 optimizes the transmission efficiency; In terms of application, nginx / openresty improves website service capability and WAF resists website intrusion attacks. Speaking of this, do you think there is something missing?Yes, in the application field, there is still a lack of a service to accelerate the HTTP protocol externally. That is what we are going to discuss today.CDN (content delivery network or content distribution network), Chinese name is "content distribution network".)
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