What is the concept of cdn net

Content distribution network (Content Delivery Network, referred to as CDN) is a distributed network, which is established and covered on the bearer network, and is composed of server groups of edge nodes distributed in different areas. CDN shares the pressure on the origin server, avoids network congestion, ensures that the distribution of website content is accelerated in different regions and different scenarios, and improves the speed of resource access. Many users will encounter the problem of how to make effective use of CDN in the process of actual use of CDN. Today, the editor will briefly introduce the principle of CDN.

What is cdn net? CDN is located in the network, is a large number of servers deployed across the country or around the world, these servers based on the current Internet infrastructure to form a network on top of it, this network is designed for resource distribution.

CDN manufacturers have built a large number of servers based on the Internet, focusing on content and resource distribution, making it easy for users to quickly access and enhance the user experience of a content network.

If there is no CDN to deal with resources, then all the deployment of resources may be far away from users, can not guarantee the experience, professional CDN service providers focus here, and the scale also makes the cost continue to drop, just like many companies around the products are outsourced, the company will be more efficient, more professional, lower prices, do not consume their own company's human resources.

So what is the principle of CDN? Why can users access the nearest server? It mainly uses DNS to determine the location of the user, and then returns the resource address of the server in the nearest computer room to the user.

For example, KFC is headquartered in the United States, but there is also a KFC downstairs, and the hamburger is exactly the same, this is CDN.

The above is an introduction to what is cdn net.