ICN-Based Enhanced Content Delivery for CDN

With the rapid growth of Internet traffic, the traditional host-to-host TCP/IP architecture is subject to many service limitations faced with content-oriented applications. Various novel network architectures have been proposed to solve these limitations, among which Information-Centric Networking (ICN) is one of the most prominent. ICN features the decoupling of content (service) from the physical devices storing (providing) it through location-independent naming, and offers inherent enhancement to network performance, such as multicast and in-network caching. ICN’s in-network caching has been extensively studied and we believe that it may also be the main incentive for ISPs to deploy ICN. A CDN(Content Delivery Network) is a typical content-oriented network paradigm that aims to provide the fast delivery of contents. We leverage the advantages of ICN’s in-network caching to enhance CDN’s content delivery efficiency by integrating ICN as a service. First, we present our design of a content delivery network enhanced with ICN, called IECDN. Additionally, we formulate a mathematical model to evaluate the performance of our proposed design and conduct a series of numerical evaluations. The results indicate that our proposed design provides significant performance gains while reducing bandwidth consumption and shows better resilience to traffic surge.