CDN stands for Content Delivery Network. The basic idea is to avoid the bottlenecks and links that may affect the speed and stability of data transmission on the Internet as far as possible, so that the content transmission is faster and more stable. To put it simply, the CDN system can be simply understood as many of my express warehouses have this product, but I need to find the latest warehouse delivery of the user according to the actual situation.
CDN acceleration is mainly to accelerate some static resources. For example, the pictures and media uploaded on the website, as well as some Js and CSS files introduced.
CND server achieves resource reserve by caching or actively fetching the contents of the master server.
Second, why to use CDN? Or what problem does the CDN solve?
Mainly is to solve the user access speed, improve user experience, reduce user loss