RepCache: Content Producer Reputation based Caching in Named Data Networks

Abstract

Named Data Networking (NDN) caching enhances user experience, making it suitable for deployment across various applications. Due to the limited router cache, it is crucial to decide carefully which content to store. Several caching techniques have been designed to better utilize router capacity by storing popular content. However, these methods are producer agnostic. In practice, it is beneficial to cache content from those producers whose content has previously been popular, as their newly generated content is also likely to be consumed by many. This observation stems from the fact that there are a few dominant content producers on the web. To leverage the benefits of caching content from dominant producers, this paper proposes a reputation-based caching strategy (RepCache) that prioritizes content based on the producer's reputation. RepCache estimates a producer's reputation by considering content frequency and hop count. RepCache outperforms state-of-the-art caching techniques by leveraging producer reputation in caching decisions. © 2026 IEEE.