EPP-LFU: An Efficient Producer Popularity-based LFU Policy for the Applications of Named-Data Network

The future Internet architecture, like Named-Data Network (NDN), converts host-based network structures into content-based network structures. Through this transformation, the overall network performance and efficiency are increased. Furthermore, every router in the NDN uses a caching mechanism. Thus, the cache replacement policy used by the NDN routers is also a significant determinant of the NDN's overall performance. Therefore, several types of research have been conducted about the NDN's cache replacement policy. In this article, a light-weighted cache replacement strategy is proposed that overcomes the limitations and drawbacks of the Least Frequently Used (LFU) cache policy. The proposed strategy applies variables, based on real-time producer popularity. Additionally, it can be observed through extensive simulations that the proposed strategy provides better results and shows a higher cache hit ratio as compared to the existing cache policies.