Fairness Considerations in Replication and Placement Strategies for large Documents in heterogeneous Content Delivery Networks

In previous publications there have been several proposals regarding replica generation and placement of readonly content in content distribution networks or P2P overlays. Within this paper, we extend approaches for heterogeneous placement scenarios described in prior publications. Therefore we presume heterogeneous server peers’ bandwidth, HD capacity, and movie popularities. Within our scenario, movie documents are replicated and placed onto server peers with respect to the predicted popularity values. Thus, each document aims to gain fair networks resources according to its popularity. Besides different heuristics for placement and replication strategies we present simulation results for these techniques in hierarchical overlay networks. These algorithms base on predicted popularity values of each document.