Important Aspects Of The Cdn Service

By Jennie Sandoval


Cdn or content delivery network in full is a system in which many computers are arranged to for a large network. The computers are usually located in different data centres. The advantage of such an arrangement is that it allows internet users to easily access information easily. The cdn service is used to transfer content such as URLs, scripts, web applications, social networks, graphics and so on.

Companies specialised in the provision of this service do so at a fee. Their clients are the companies that develop and sell various types of content on the internet. The revenue of the vendor comes directly from the internet users and they use this to pay the company hosting them. To successfully run this service one will need ISPs, network operators and carriers.

Frequently, companies that provide the service do so using their own servers. They may, alternatively, use servers belonging to their peers using what is referred to as P2P technology. Under this arrangement, the provider is in a position to host a larger pool of clients since they are using both their servers and those of their peers. Additionally, they can easily offload traffic received from the provider which serves to save on operation costs.

Transmission is done through points known as nodes. These are typically placed in multiple locations and supported by several backbones. The location of a node is also known as a point of presence, PoP. The manner in which the nodes are arranged helps in reducing bandwidth costs. It is also helpful in improving the page load time and increasing content availability. The total number of nodes varies depending on the architectural design.

Requests received on the server from clients are redirected to the most optimal nodes. The optimal node is determined by calculating the number of network seconds between the requesting computer and the server of the provider. The fewer the seconds the greater the chances of the node in question being the optimal one. Choosing the most optimal node makes the delivery of content to the client fast.

On some occasions, the traffic is tremendous. It may overwhelm the servers. When faced with such a situation, either the hardware-based or software-based options of redirecting the traffic can be explored. While there are a number of differences between them, both techniques involve the redirecting of traffic to various servers and web caches. This is achieved by using unique IP addresses.

One of the most commonly used internet services currently is live video streaming. Unfortunately, this is one of the services that frequently overloads networks and slows connectivity. In an attempt to tackle this problem, many broadband providers have resorted to investing heavily in servers used for redirecting of traffic within the network. Most have managed to maintain good internet connectivity even with thousands of using streaming live video.

There is no doubt that the CDN service is one of the greatest developments in technology in the modern era. The technology continues to impress on many fronts even as more research is carried out. It has revolutionised the way in which various content is relayed to the end client. Unlike in the past, the user and the vendor are in close contact something makes it easy for the vendor to get feedback and to improve service delivery. Its major advantage is the deep catchment that exists in the network.




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