Content Delivery Networks For Website Optimization

Most of the businesses are present online these days because of higher availability of prospects available there

. Moreover, the prospects are also indulged in the habit of searching, virtually everything, on the internet. Therefore, web presence of any business is effectively beneficiary for both, the business and prospects.

However, if there are loading issues and bandwidth constraints between the hosting server and visitor's machine, issues related to the popularity of the website can arise. To rectify these issues related to traffic handling and loading time of website, Content Distribution Networks or CDNs are used. Content Delivery Networks speed up the loading of a website by redirecting the visitor to the nearest server according to user's location. Using a CDN requires hosting the website on multiple servers and then redirecting the visitor upon further requests for heavy data or high traffic conditions. CDN provides advantages like:

Improved response time of a website due to distributed network. It improves the loading time of the website and keeps a balance of requests and responses between the server and the user.

Highly responsive websites are considered of high quality by search engines, so CDNs can also help in optimizing the web presence of a business. Moreover, high response time increases the frequency of page views due to faster loading of pages.

Ends up the need of upgrading the bandwidth from a web hosting server because most of the files are delivered over CDNs and load of unnecessary requests processing is balanced at hosting server.

A CDN acts as a performance booster for a website by dynamically allocating the request to the nearest server and redirecting the user to the appropriate location, this optimizes the speed of content delivery.

Deployment of a CDN in a business requirement needs special attention because its a crucial decision in terms of investment. A start-up website may not be fit for hosting or part of it, over multiple locations. Large amount of data can be delivered over CDN separately and rest of the content can be served from a single location or vice-versa.

Different routing algorithms are used to directs the visitors to CDNs. These are:

Global Server Load balancing,

DNS-based request routing,

HTML rewriting etc.

In order to choose the nearest active node for efficient content delivery, techniques like reactive probing, proactive probing and connection monitoring are used. These techniques help a hosting server to locate the local CDN node in proximity to the user's IP and then direct him accordingly.

CDNs are basically the cloud computing solutions provided for virtualization of servers and provide serious solutions for large scale information management projects.

CDNs also provides solutions on shared servers as well, where there are number of websites hosted in collection. Crucial parts of the website can then be copied on CDNs without affecting the visitors experience in load conditions or network related problems.

by: christa joe

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