Cooperative video caching for interactive and scalable VoD systems

In this work, we introduce a novel technique called Cooperative Video Caching (CVC) that enables scalable and interactive Video-on-Demand (SI-VoD) servers to be developed. The key insight of CVC is to exploit the client buffers as a large global distributed memory that can be randomly accessed over the communication network, CVC uses patching and chaining but in such a way that minimizes communication traffic, eliminates the chaining interruption problem, and most important, enables VCR-like interaction. Through detailed CVC simulations our results show that CVC-based servers are potentially scalable. In addition, we show that interactive CVC servers significantly outperform conventional interactive VoD servers. These preliminary results suggest that CVC is a promising technique to develop SI-VoD servers.