Caching in information centric networking: A survey |
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Authors: | Guoqiang Zhang Yang Li Tao Lin |
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Affiliation: | 1. School of Computer Science and Technology, Nanjing Normal University, Nanjing, China;2. High Performance Network Lab, Chinese Academy of Sciences, Beijing, China;3. Provincial Key Laboratory for Computer Information Processing Technology, Soochow University, Suzhou, China |
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Abstract: | Internet usage has drastically shifted from host-centric end-to-end communication to receiver-driven content retrieval. In order to adapt to this change, a handful of innovative information/content centric networking (ICN) architectures have recently been proposed. One common and important feature of these architectures is to leverage built-in network caches to improve the transmission efficiency of content dissemination. Compared with traditional Web Caching and CDN Caching, ICN Cache takes on several new characteristics: cache is transparent to applications, cache is ubiquitous, and content to be cached is more ine-grained. These distinguished features pose new challenges to ICN caching technologies. This paper presents a comprehensive survey of state-of-art techniques aiming to address these issues, with particular focus on reducing cache redundancy and improving the availability of cached content. As a new research area, this paper also points out several interesting yet challenging research directions in this subject. |
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Keywords: | Information-centric networking In-network cache Cache coordination Cache decision Object availability |
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