What is Content Delivery Network (CDN)
Networking , Technology & Science / February 8, 2018

With the proliferation of the Internet, popular Web services often suffer congestion and bottlenecks due to large demands made on their services. Such a scenario may cause unmanageable levels of traffic flow, resulting in many requests being lost. Replicating the same content or services over several mirrored Web servers strategically placed at various locations is a method commonly used by service providers to improve performance and scalability. The user is redirected to the nearest server and this approach helps to reduce network impact on the response time of the user requests. What is it? Content Delivery Networks (CDNs) provide services that improve network performance by maximizing bandwidth, improving accessibility and maintaining correctness through content replication. They offer fast and reliable applications and services by distributing content to cache or edge servers located close to users. CDNs have evolved to overcome the inherent limitations of the Internet in terms of user perceived Quality of Service (QoS) when accessing Web content. They provide services that improve network performance by maximizing bandwidth, improving accessibility, and maintaining correctness through content replication. The typical functionalities of a CDN include: Request redirection and content delivery services, to direct a request to the closest suitable CDN cache…

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