Design And Implementation Of A Local Load Balacing System For CDN

With the continuous development of the network technology, broadband applications based on the new business is in line with the next generation network (NGN) for the development of the road while in the current operators to bring new business opportunities, major telecom operators regarded the development of broadband applications as its core business. In many broadband applications in the broadband streaming media services is the most characteristics of the broadband Internet applications, by the market to test it to attract the most users and a broadband business highlights, a strong selling point of promoting the success of the broadband market.To allow users to better enjoy Internet streaming media services, and many advanced technologies and the corresponding new system resulting. The Internet Content Distribution Network (CDN: Content Delivery Network) solution as the main technology. CDN its purpose through the existing network and Internet users add a layer of new, transparent network infrastructure, resources will be released to the nearest network users "marginal", allowing users to obtain the necessary majority of the nearest content and improve the speed of access and quality.Load Balancing on the establishment of the existing network structures. It offers a cheap and effective method of expansion of bandwidth and servers increase throughput, enhance network data processing capability, and enhance network flexibility and availability. Network load balancing network traffic is evenly distributed to the extent possible to complete the same task several of the server or network node, thus part of the network nodes to avoid overload. This can enhance network traffic, and also enhance the overall performance of the network.In CDN, load balancing and load balancing between local (Local Server Load Balancing) and the overall load balancing (Global Server Load Balancing). This paper is to explore the local CDN network load balancing system. Through the various existing load balancing technology horizontal, vertical contrast, through analysis and comparison of the pros and cons of various strategies, as well as integration of the system and its use of the environment and to achieve a suitable local load balancing strategy - HTTP Redirect.