Policy-driven multi-file distribution

We propose to study the impact of a suite of policies on the performance of a multi-file distribution system that integrates CDN and P2P techniques. One of the policies is the peer contribution policy that decides the limited data rate and data volume to be contributed by each peer. The peer contribution policy is critical to maintaining the system's overall file distribution capacity without unfairly overloading the individual peers. In our previous work, we present an analytical framework for the modeling of a hybrid CDN-P2P architecture under a file-specific peer contribution policy. In this paper, we focus on a different scenario where multiple files are being distributed and the peer contribution policy is file-independent. We argue that a suite of policies need to be studied, in order to understand their impacts on the overall file distribution performance. The policies include: (1) file-independent peer contribution policy, (2) file request admission policy, (3) supplier selection policy, and (4) file replacement policy. We define a system model for the analysis of these policies. Based on the model, we also propose possible definitions of the policies.