Cloud-based storage is a popular outsourcing solution for organizations to deliver contents
to end-users. However, there is a need for contingency plans to ensure service provision
when the provider either suffers outages or is going out of business. This paper presents
SkyCDS: a resilient content delivery service based on a publish/subscribe overlay over
diversified cloud storage. SkyCDS splits the content delivery into metadata and content
storage flow layers. The metadata flow layer is based on publish–subscribe patterns for …