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November 10, 2012

What is CDN?


What’s a CDN?
CDN stands for content delivery network is used by computers that copies data and places it on various places within the network which serve the dual purpose and convenience through which the client can easily access the copy of the document which is in close proximity with the client and also serve as an effective tool in maximizing the bandwidth in order to facilitate the accessibility of material throughout the network.
CDN can offer a wide range of documents which can easily be accessed by the client. These include web objects, downloadable objects such as media files and software settings, DNA routes and real time media streams. In addition to this the presence of the CDN technology also enables the client to prevent transmission or interruption of data access through the presence of bottlenecks as all clients do not use the same central server with the objective of data access. An important question after providing a brief introduction about this technology is to find out the technology through which the use of CDN is employed in an effective and usable way.
A major part in terms of usability is executed by the deployment of multiple CDN nodes which are placed over multiple backbones. These nodes then cooperate with each other to gratify the requests of content that are made by the end user, thus making the transparent movement of data through an optimized delivery process. With the process of optimization the bandwidth of the costs is reduced, performance obtained by the consumer is improved and on top of all global or expanded availability of content is also made possible. The request of content is optimized in an algorithmic fashion whereas during the process of optimizing performance, places that are idyllic for the serving of content by the user might be chosen.
By choosing such simple areas and places of optimization, the time duration for the client to access the appropriate data is significantly reduced. Similarly while optimizing for costs the CDN technology can also prove helpful in the selection and places that are least expensive and highly affordable.
There are many advantages that are related with the technology of CDN. Firstly, with the help of this technology the distribution of assets can take place in the most strategic way possible in which redundant, frivolous and useless material can automatically be categorized, thus helping in the differentiation of useful work from useless.
 In addition to this the CDN technology also provides greater control over asset delivery and in times when the entire network is overwhelmingly loaded. Moreover they can also optimize capacity on per consumer basis, provide overview of real time statistics and load, demonstrate regions that are highly proactive and undergo dynamic changes. With the help of the CDN technology the sum of strategically placed servers can be higher than the total network backbone capacity.
This has a direct effect on the number of users that are accessing the services of the server simultaneously. Furthermore the technology also provides a high degree of privacy to the user by further categorizing them into further interconnects of public peers, private peers and backbones through which the load on the server is also reduced substantially, thus enhancing the speed of data accessibility.          

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