Using CDN to Increase the Scalability of the Server

Abstract

A content delivery network or content distribution network (CDN) is a large distributed system of servers deployed in multiple data centres across the Internet It deliver WebPages and other Web content to a user based on the geographic locations of the user, the origin of the webpage and a content delivery server.CDN serve a large fraction of the Internet content today, including web objects ,downloadable objects , live streaming media, on-demand streaming media, and social networks. A CDN (content delivery network) is a network of servers located in different parts of a country (or the globe) that stores files to be used by your website visitors. The reason they exist is because there is a measurable amount of latency (waiting time) for a website user who is visiting a page that is hosted thousands of miles away. There are also routing issues that can occur when a user is seeing such a webpage. If someone in New York is using a webpage that is hosted in Los Angeles they are seeing a slower version of that webpage because of the above mentioned routing issues and sheer distance the files have to travel. By having your files on several servers across a geographical area you can make sure the user is loading files that are near them, not all the way across the country or ocean.