Experimental Evaluation of Memory Management in Content-Centric Networking

Content-Centric Networking is a new communication architecture that rethinks the Internet communication model, designed for point-to-point connections between hosts, and centers it around content dissemination and retrieval. Most of the issues faced by the current IP infrastructure in terms of mobility management, security, scalability, which are accrued by today's Internet trends, find a natural solution in CCN shift from IP addresses to named data. In this paper we explore the impact of storage management on the performance of multiple applications sharing the same CCN infrastructure and we quantify the effectiveness of static storage partitioning and dynamic management techniques in providing service differentiation. To this purpose, we implement a set of storage management techniques in the open source CCNx prototype and perform extensive experiments in a real testbed under fairly realistic network conditions. Our experimental results allow to clarify the relation between CCN chunk-level caching and Quality of Experience (QoE) perceived by end users.