Abstract
The current Internet is based on host-centric networking, and a user needs to know the host address before reaching a data target in the network. The new architecture of information-centric networking (ICN) facilitates users to locate data targets by giving their data names without any information about host addresses. In-network caching is one of the prominent features in ICN, which allows network routers to cache data contents. In this paper, we emphasize the management of in-network cache storage, and this includes the mechanisms of cache replacement and cache replication. A new cost function is then proposed to evaluate each cache content and the least valuable content is evicted when cache is full. To increase cache utilization, a cooperative caching policy among neighboring routers is proposed. The proper network locations to cache data contents are also discussed in the paper. Experimental results show the superiority of the proposed caching policy than some traditional caching polices.
Highlights
As the volume of data on the Internet becomes extremely huge, big data search techniques are necessary
We emphasize the management of in-network cache storage, and this includes the mechanisms of cache replacement and cache replication
Some early information-centric networking (ICN) prototype systems [10] [11] provide name resolution services which are similar to the service of the domain name system (DNS)
Summary
As the volume of data on the Internet becomes extremely huge, big data search techniques are necessary. Data search is directly supported by the underlying routing protocol in the network rather than indirectly supported by a search engine. This revolution technology opens a potential direction on the future Internet. In addition to name-based routing, one notable point of ICN is in-network caching by which each router has cache storage. A router can immediately respond a data request if there is one copy of the desired data content in its cache storage. This improves the delivery of popular data contents in time and bandwidth consumption. The remainder of this paper is organized as follows: Section 2 provides a brief survey on ICN; Section 3 describes the proposed in-network caching; Section 4 shows the performance evaluation; and Section 5 presents concluding remarks
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