CDN is the abbreviation of Content Delivery Network, that is, content distribution network. It is a network of servers distributed around the world. By deploying cache nodes at the edge of the network, the content requested by users is cached on the server closest to the user, thereby improving the speed and performance of users' access to content.
CDN can cache the static resources of the website (such as pictures, videos, JavaScript and CSS files, etc.) The time and cost required to request access.
In addition to improving the access speed of website content, CDN can also reduce the load on the server and improve the stability and reliability of the website by caching static resources. CDN also provides some security and quality of service features, such as encrypted transmission, anti-DDoS attack and load balancing.
CDN services are provided by professional suppliers. Enterprises and organizations only need to register to use CDN services, and then transmit their content to globally distributed nodes through CDN.