CDN interconnection service trial: implementation and analysis

2012

2006

2013 Fourth International Conference on the Network of the Future (NoF), 2013

The Internet architecture, based on end-to-end connections, had difficulties to efficiently deliver the always increasing number of contents. Content Delivery Networks (CDN) have been deployed to improve the delivery. Recent research works propose a new networking architecture, much more adapted to the current Internet usage (end-users just care about the contents they want and not about the endpoints that provide them). The Content-Centric Networking (CCN) aims at replacing the IP paradigm. CCN has been investigated by the research community for few years, and some demonstrators have proved its feasibility. However, less works have addressed the CDN use-case so far. In this paper, we show that the current CCN design, which does not allow negative reply, is not suitable for interconnection with the CDN service. We then propose the use of two new tables in the CCN nodes that are interconnected to the CDN servers, in order to detect possible misses in the CDN servers and subsequently forward the requests for missing contents toward the original servers instead of the CDN surrogates. The evaluations we have performed highlight that the integration of both new tables does not incur an increase of the memory requirement and thus a cost in the node. The proposed solution is thus a viable solution to make CCN network work in close cooperation with CDN networks, each one keeping its specific business models and functions: transport for CCN, storage for CDN.

2017 International Conference on Networking and Network Applications (NaNA)

The explosion of Video-on-Demand (VoD) traffic has been a main driving force behind the Internet's evolution from a traditional connection-centric network architecture towards the new content-centric network architecture. To support this evolution, operators are deploying caches of VoD contents closer to users across network equipments deployed in core, metro and even access network segments to mitigate the traffic growth and improve the VoD quality of service. The deployment of storage elements (caches) across the network to deliver contents to endusers is known as a Content Delivery Network (CDN). For a CDN operator, it is important to minimize the cache-deployment cost while satisfying end users performance requirements. On one hand, deploying a high number of large caches closer to users improves the performance of a CDN (e.g., decreasing latency) but introduces huge capital and operational costs. On the other hand, deploying fewer caches in higher network segments introduces high operational costs due to high data traffic and might not satisfy future traffic demands, thus failing to meet users requirements. In this paper, we aim to identify the most cost-efficient cache deployment in CDN and to study the tradeoff between the CDN performance and cost. We propose a CDN cost model which takes into consideration the capital and operational expenditures of CDN devices (e.g., caches and video interfaces) and of traffic required to serve the end users. We examine the effect of the content popularity on the cost of CDN deployment strategies, showing that there are different optimal cache deployment strategies for different popularity distributions. Results show that deploying a huge number of large caches in the access segment optimizes the quality of service for end users but increases the operational expenditure. Instead, a CDN deployment which utilizes caches across both the access and metro segments achieves a more balanced solution in terms of both the overall performance and cost.

The content management includes a major technical strategy in the network paradigm of the internet which is called a Content delivery network. The design and the deployment of the CDN shall ensure optimal Quality of services (QoS). This paper aims to brief the taxonomy of the CDN along with its typical architecture. Much latest advancement in smartphones and smart devices which are content hungry require more efficient and reliable mechanism for the costeffective delivery of the contents irrespective of bottleneck constraints that leads to redesign the entire architecture of CDN on the cloud as CCDN or a new business model of CCDN as a service. The challenges of design for CCDN along with the evolved architecture are discussed in this paper.

Winter Simulation Conference, 2016

A Content Delivery Network (CDN) is a dynamic and complex service system. It causes a huge amount of traffic on the network infrastructure of Internet Service Providers (ISPs). Oftentimes, CDN providers and ISPs struggle to find an efficient and appropriate way to cooperate for mutual benefits. This challenge is key to push the quality of service (QoS) for the end-user. We model, simulate, and optimize the behavior of a CDN to provide cooperative solutions and to improve the QoS. Therefor, we determine reasonable server locations, balance the amount of servers and improve the user assignments to the servers. These aspects influence run time effects like caching at the server, response time and network load at specific links. Especially, user request history and profiles are considered to improve the overall performance. Since we consider multiple objectives, we aim to provide a diverse set of pareto optimal solutions using simulation based optimization.

2012

In order to fully utilize the stable edge transmission capability of CDN and the scalable last-mile transmission capability of P2P, while at the same time avoiding ISP-unfriendly policies and unlimited usage of P2P delivery, some researches have begun focusing on CDN-P2P-hybrid architecture and ISP-friendly P2P content delivery technology in recent years. In this paper, we first survey CDN-P2P-hybrid architecture technology, including current industry efforts and academic efforts in this field. Second, we make comparisons between CDN and P2P. And then we explore and analyze main issues, including overlay route hybrid issues, and playing buffer hybrid issues. After that we focus on CDN-P2P-hybrid model analysis and design, we compare the tightlycoupled hybrid model with the loosely-coupled hybrid model, and we propose that there are some main common models which need further study. At last, we analyze the prospective research direction and propose our future work.

IEEE Internet Computing, 2003

The proliferation of Content Delivery Networks (CDN) reveals that existing content networks are owned and operated by individual companies. As a consequence, closed delivery networks are evolved which do not cooperate with other CDNs and in practice, islands of CDNs are formed. Moreover, the logical separation between contents and services in this context results in two content networking domains. But present trends in content networks and content networking capabilities give rise to the interest in interconnecting content networks.

IEEE Transactions on Network and Service Management, 2017

Lecture Notes in Computer Science, 2004

Content Delivery Networks (CDN) aim at overcoming the inherent limitations of the Internet. The main concept at the basis of this technology is the delivery at edge points of the network, in proximity to the request areas, to improve the user's perceived performance while limiting the costs. This paper focuses on the main research areas in the field of CDN, pointing out the motivations, and analyzing the existing strategies for replica placement and management, server measurement, best fit replica selection and request redirection.