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What is CDN and importance of nodes?

Posted In Business - By Techtiplib on Tuesday, February 28th, 2017 With No Comments »

In a business whether it is small or big CDN plays a very important role if they have an internet based business. CDN stands for content delivery network and this network’s web servers are geographically distributed all over the world. The main motive of the CDN is to provide the best available content at high speed and fast delivery. Many e-commerce as well as media companies pay to these CDN network providers to provide their content to the customer. CDN functions in two different ways such as:

  • It distributes the important content to many data centers that are present all over the world. This is done because by doing so data gets closer to user and when user wants he can quickly deliver or download.
  • It also makes use of optimized server that is based on the type of content, so that the content will be delivered to the user very efficiently.


A content delivery network or content distribution network (CDN) is a globally distributed network of proxy servers deployed in multiple data centers. The goal of a CDN is to serve content to end-users with high availability and high performance. CDNs serve a large fraction of the Internet content today, including web objects like text, graphics and scripts, downloadable objects like media files, software, documents, applications (e-commerce, portals), live streaming media, on-demand streaming media, and social networks.

The term CDN means many things to different people and is an umbrella term that covers a lot of different types of content delivery services. Video streaming, software downloads, web and mobile content acceleration, licensed/managed CDN, transparent caching, and services to measure CDN performance, load balancing, multi-CDN switching and analytics and cloud intelligence. It’s a complex ecosystem with a lot of vendors both large and small and some CDN vendors cross over into other industries like security and WAN optimization.

Content owners such as media companies and e-commerce vendors pay CDN operators to deliver their content to their end-users. In turn, a CDN pays ISPs, carriers, and network operators for hosting its servers in their data centers.

The Internet was designed according to the end-to-end principle. This principle keeps the core network relatively simple and moves the intelligence as much as possible to the network end-points: the hosts and clients. As a result, the core network is specialized, simplified, and optimized to only forward data packets.

Content Delivery Networks augment the end-to-end transport network by distributing on it a variety of intelligent applications employing techniques designed to optimize content delivery. The resulting tightly integrated overlay uses web caching, server-load balancing, request routing, and content services.

Importance and Types of nodes

CDN nodes are very important, that’s why it is distributed over many different locations. These nodes greatly reduce the cost of bandwidth; improve the load time of your page and the content increases it global availability..

  • Delivery nodes – its main motive is to provide or deliver the data to the user.
  • Storage nodes – the main purpose of this node is to provide the data to cache. These nodes are distributed through a hierarchical model that protects the origin of servers.
  • Origin nodes – this is the main source of content and it is located inside the operator’s network to give resilience and scale multiple origins.
  • Control node – purpose of this is to provide management, monitoring as well as routing to CDN’s component. It is also known as a very typical integration point for any BSS/OSS system.

Author Bio:

Simon Hopes is a renowned author and social media enthusiast. In order to get a good CDN service you can hire ahcdn as your service provider.

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