Optimal cache allocation for Content-Centric Networking

Yonggong Wang, Zhenyu Li, Gareth Tyson, Steve Uhlig, Gaogang Xie
2013 2013 21st IEEE International Conference on Network Protocols (ICNP)  
Content-Centric Networking (CCN) is a promising framework for evolving the current network architecture, advocating ubiquitous in-network caching to enhance content delivery. Consequently, in CCN, each router has storage space to cache frequently requested content. In this work, we focus on the cache allocation problem: namely, how to distribute the cache capacity across routers under a constrained total storage budget for the network. We formulate this problem as a content placement problem
more » ... obtain the exact optimal solution by a two-step method. Through simulations, we use this algorithm to investigate the factors that affect the optimal cache allocation in CCN, such as the network topology and the popularity of content. We find that a highly heterogeneous topology tends to put most of the capacity over a few central nodes. On the other hand, heterogeneous content popularity has the opposite effect, by spreading capacity across far more nodes. Using our findings, we make observations on how network operators could best deploy CCN caches capacity.
doi:10.1109/icnp.2013.6733577 dblp:conf/icnp/WangLTUX13 fatcat:jblpnsivkng6tnjpowoujrx6vu