A Survey of Caching Mechanisms in Information-Centric Networking

Abstract

Information-Centric Networking (ICN) is a novel networking paradigm that attracts increasing research interests in recent years. In-network caching has been viewed as an attractive feature of ICN because it can reduce network traffic, alleviate server bottleneck, and reduce the user access latencies. Because of this, the network community has proposed many innetwork caching mechanisms that aim at optimizing various performance metrics such as cache hit ratio and cache hit distance. In this survey, we present a comprehensive overview of the recently proposed in-network caching mechanisms for ICN. For each caching mechanism, we describe it in detail, present examples to illustrate how it works, and analyze its possible benefits and drawbacks. We also compare some typical in-network caching mechanisms through extensive simulations and discuss the remaining research challenges.

Providing Information Resilience Through Modularity-Based Caching in Perturbed Information-Centric Networks

“…With information named and identifiable, ICN opens the possibility of providing in-network information caching. We saw many recent proposals attempting to exploit in-network caching (see [5]) but they are almost universally aiming at metrics related to speed and efficiency of information delivery. Most recently, understanding the importance of reliable information transmission, [3] proposed a resilience scheme that exploits ICN in-network caching for content retrieval when the network is fragmented.…”

“…To the best of our knowledge, this work represents the first attempt to exploit community structures for information resilience which itself is a recently highlighted open issue in ICN. Prior work on in-network caching (See [5]) mostly focused on enhancing performance (such as improving cache hit ratio) while this work focuses on improving information availability and reachability taking into account possible failures in the network. For this, a review of the fundamentals of community structure as well as related work on resilience can be found in Section II.…”

Evolution and Future of Information Networks

“…ICN/CCN provides the content transfer function in a manner similar to that used by Winny, which is a P2P application, or Freenet [36], from which Winny was derived. Specifically, the nodes through which a content request has passed are traced backward, hop by hop, to transfer the requested content to the user while simultaneously storing a copy of the content at each of these nodes [37], [38]. As a result, a number of copies of the content are left on the network so that content can be efficiently delivered to subsequent users from a node close to each user.…”

Performance Analysis of In-Network Caching in Content-Centric Advanced Metering Infrastructure

“…We can also differentiate caching policies based on router cooperation while placing content cache. Cooperative or non-cooperative strategies are mostly known [16].…”