Content Delivery Network (CDN) can be applied to improve effectiveness and robustness of Internet in an economical manner. In this work we present an optimization problem of replica server location of a CDN. Most of previous papers on CDNs focus on connectionless techniques. In this paper we assume that CDN is located in MPLS network and traffic is modeled as connection-oriented flow. Another n...

Over the last decades, users have witnessed the growth and maturity of the Internet which has caused enormous growth in network traffic, driven by the rapid acceptance of broadband access, the increases in systems complexity, and the content richness. The over-evolving nature of the Internet brings new challenges in managing and delivering content to users, since for example, popular Web servic...

The Internet is currently mostly exploited as a means to perform massive digital content distribution. Such a usage profile was not specifically taken into account while initially designing the architecture of the network: as a matter of fact, the Internet was instead conceived around the concept of host-to-host communications between two remote machines. To solve this problem, Content-Delivery...

Nowadays, while large-sized multimedia objects are becoming very popular throughout the Internet, one of the important issues appears to be the acceleration of content delivery network (CDN) performance. CDN is a web system that delivers the web cached objects to the client and accelerates the web performance. Therefore the performance factor for any CDN is vital factor in determining the quali...

In streaming media CDN, pushing copies of the new content to caching proxies ahead of time while allowing others to be pulled from the origin server is an effective way to reduce the client startup time and save network resource. In order to cope with the shortcomings of the existing streaming media CDN and accomplish large-scale deployment streaming media on the Internet, in this paper, first,...

Video on demand (VoD) systems currently use content delivery networks (CDN) to feed content to users, whose performance and effectiveness depends on the architecture, the number and the geographical location of CDN nodes deployed by CDN providers or ISP(s) itself. Content-Centric Networking (CCN), with the benefits of caching and sharing content by every node in the network, suggests an alterna...

Agent-Based Modeling and Simulation (ABMS) has emerged as a new and powerful technology for the analysis of natural and artificial complex systems. In this paper ABMS is exploited for the modeling and performance evaluation of Conventional, Clustered and Cooperative Content Distribution Network (CDN) architectures. Clustered and Cooperative architectures differ from Conventional architectures a...

In this paper we propose to adapt the scalable schema of Content Delivery Networks (CDN) to the campus environment, naming the novel architecture as Campus Content Delivery Network (CCDN). This overlay network will provide scalable and balanced access to the students and teachers to e-learning facilities. The CCDN will be composed by caches used as edge delivery nodes, content routing capabilit...

Problem statement: This study addressed the user’s perceived quality of service requirements in content distribution and investigated the role of QoS. Aware Dominating set based Semantic Overlay Network (QADSON) in surrogate server selection to achieve the specified quality of service. Approach: At first, we constructed the QoS aware dominating set based semantic overlay network which was a vir...

Today’s Internet content providers primarily use Content Delivery Networks (CDNs) to deliver content to end-users with the aim to enhance their Web access experience. Yet the prevalent commercial CDNs, operating in isolation, often face resource over-provisioning, degraded performance, and Service Level Agreement (SLA) violations, thus incurring high operational costs and limiting the scope and...