What Is CDN and How Does CDN Work

Content Delivery Network is the system of distributed servers for delivering the WebPages as well as other Web Contents to user. CDN is the network of servers spread geographically with the caching static files and enhances delivery mode. Based on the geographic locations of user, content delivery server and origin of the webpage is setup. Content Delivery Network has geographically spread servers with cache the static files such as images, video, CSS, JavaScript and others to boost speed of transfer. Many people are looking for the perfect answer for what is cdn and how does CDN work. CDN is a process that speeds up the delivery of the content in websites to reach the high traffic of attaining the goal. CDN servers are user geographically so the content will be delivered faster when compared to normal service mode. CDN also offers complete protection from the large surges based on traffic. Delivering the large scale websites for the global audience is the main aim of the CDN and it automatically reduces the latency.

  • Reduces bandwidth consumption
  • Secures application
  • Accelerates site load times
  • Blocks data scrappers
  • Reduce latency

How CDN Works?

Servers near to the website visitor respond to request and the Content Delivery Network will copy pages of website into the server network dispersed at the different locations geographically and caches content in page. Upon the request of the user, the webpage will be redirected from the originating server of site to the server in the CDN closest to the user with delivering cached content. CDN communicate with originating the server with delivering the content that is not cached previously. When Content is sent from origin of the server to website visitor, speed of the transfer also depends on physical distance between them with certain degree. Normally, Speed of transfer depends on physical distance as well as various other factors. When round-trips data travels to longer distance then it takes longer for the webpage to open. CDN does not replace the web hosting or any other services with it. CDN is an additional network that stores static content and serves cache with geographically distributed servers. The infrastructure of CDN includes origin server so the owner can use it to store and upload the content. Edge servers will be distributed in several regions of datacenters called as Points of Presence (PoPs). When a user sends the request for content or webpage, then it would be directed to origin server and content will be transferred to the user. Requested data will be saved on the edge servers then sent to the user when CDN is implemented.

Benefits Of CDN:

Content Delivery Network is widely useful for the B2B interactions to consumers in serving the content. Nowadays many number of people are choosing online access so most organizations use the content delivery network system for accelerating the dynamic content, static content, mobile content, e-commerce transactions, games, video, voice and so on. Main reason for using the CDN is that it takes less time for the web-pages to load.