In recent years, Internet Service Providers (ISPs) have started to deploy Telco Content Delivery Networks (Telco CDNs) to reduce the pressure on their network resources. The deployment of Telco CDNs results in reduced ISP bandwidth utilization and improved service quality by bringing the content closer to the end-users. Furthermore, virtualization of storage and networking resources can open up...

Content adaptation is an essential concept to meet the heterogeneous requirements of clients in Pervasive Computing environments. However, content adaptation interferes with replication applied in content networks to improve the performance of information access. Leveraging the advantages of replication in the world of Pervasive Computing is the subject of this paper. We introduce the notion of...

CDNs have reshaped the Internet architecture at large. They operate (globally) distributed networks of servers to reduce latencies as well as to increase availability for content and to handle large traffic bursts. Traditionally, content providers were mostly limited to a single CDN operator. However, in recent years, more and more content providers employ multiple CDNs to serve the same conten...

We consider a two-tier content distribution system for distributing massive content, consisting of an infrastructure content distribution network (CDN) and a large number of ordinary clients. The nodes of the infrastructure network form a structured, distributedhash-table-based (DHT) peer-to-peer (P2P) network. Each file is first placed in the CDN, and possibly, is replicated among the infrastr...

We present a new software tool called CDN (Collaborative Data Network) for sharing and querying of clinical documents modeled using HL7 v3 standard (e.g., Clinical Document Architecture (CDA), Continuity of Care Document (CCD)). Similar to the caBIG initiative, CDN aims to foster innovations in cancer treatment and diagnosis through large-scale, sharing of clinical data. We focus on cancer beca...

One common revenue model in Content Distribution Networks (CDN), requires the CDN operator to provide access statistics (e.g. hits, transferred bytes) to the content provider, who in turn is expected to deliver payment dependent on these reported values. An implicit assumption of self-regulated truthfulness of the CDN operator governs this process. The content provider has to trust that the con...

Content distribution networks (CDNs) increase the capacity of individual Web sites and attempt to deliver content from caches that are located “closer” to end-users than the origin servers that provide the content. CDN brokering provides CDNs a way to interoperate by allowing one CDN to intelligently redirect clients dynamically to other CDNs. This paper describes the goals, architecture, and p...

ENERGY-EFFICIENT CONTENT DELIVERY NETWORKS