A Cache Placement Strategy Based on Compound Popularity in Named Data Networking

Abstract

The built-in pervasive caching is one of the most important features of named data networking (NDN), which can provide effective data delivery even in presence of short-lived and intermittent connectivity. NDN-caching can reduce the expected flood of global data traffic by providing cache storage at intermediate nodes for transmitted contents, making data broadcasting in an efficient way. It also reduces the content delivery time by caching popular content close to consumers. In this article, a cache placement strategy is proposed based on compound popularity (content popularity and node popularity). The proposed scheme aims to enhance the reuse rate of data packets by jointly considering the content popularity and the node popularity in a period of time. Meanwhile, content popularity can be obtained by a lightweight method in our scheme. Performance evaluation in Icarus simulator shows that the proposed scheme performs better in terms of the cache hit ratio, start latency, and link load than some existing strategies.

Keywords

• Information centric networking (ICN)
• named data networking (NDN)
• content popularity
• on-path caching
• in-network caching