Aggregating and Sharing Contents for Reducing Redundant Caches on NDN

Abstract

NDN (Named Data Networking) returns requested content to users by utilizing network cache on routers. Routers cache contents which once delivered over them. Hence, popular content requested frequently by multiple users may be cached in multiple routers, and this leads high redundancy of cached content and consume capacity of network buffer. When the multiplicity of cached content becomes low, performance of NDN also degrades due to low cache hit ratio. In this paper, we propose new method to aggregate network cached contents according to the survey of user requests at the edge routers. The proposal relocates aggregated contents for improving cache hit ratio by sharing them among multiple users. The results of performance evaluations confirm that proposal well educes the network cache effects than the conventional NDN.