Editorial for special issue Internet-based Content Delivery

The main technical underpinnings of Cloud Computing infrastructures and services include virtualization, service-orientation, elasticity, multi-tenancy, power efficiency, and economics of scale. The perceived advantages for Cloud-service clients include the ability to add more capacity at peak demand, reduce cost, experiment with new services, and to remove unneeded capacity. This special issue came to be due to the direct and indirect involvement of many researchers, academicians, developers, designers, and industry practitioners. As the volume of data produced at the Internet surges, the pub/sub paradigm becomes increasingly popular for content access and dissemination. The authors focus on content-centric pub/sub networks and describe a new placement and replica assignment algorithm. The authors propose a novel distributed caching scheme where caches are organized in domains so as to fetch content from other caches and share content between caches in the domain.