Content-Centric Framework over the Internet Environments
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Content‑Centric Framework over the Internet Environments Dong Wang1 · Xiaonan Wang1
© Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract In recent years, content delivery accounts for a large proportion of the Internet traffic, but end-to-end communications used in the Internet mismatch content-centric delivery and lead to considerable delivery costs and latency. Taking the advantages of content-centric networking into account, we are motivated to employ the name-based mechanism to achieve content communications in the Internet and propose a content-centric framework in the Internet environment (CCFI). CCFI proposes a mapping mechanism between a unicast address and a name so that it can employ the name-based mechanism to achieve the following two objectives: (1) forward a content request to the nearest server in a unicast way; (2) support content sharing among multiple sources. Finally, CCFI is analyzed and evaluated, and the data show that it effectively reduce the content communication costs and latency. Keywords Internet · Content-centric networking · Name · Unicast
1 Introduction Currently, most of the Internet traffic is related to content delivery [1–4] that is only concerned with contents themselves without caring about their provenance [5, 6]. However, the Internet is basically address-centric and essentially focuses on end-to-end communications. Since each end-to-end communication is performed independently between a source user and a destination server, it has two main features: (1) the user must acquire desired contents from the destination server even if the destination server is not optimal [6, 7]. If the destination server fails to provide contents, another communication process has to be launched. (2) The end-to-end communications cannot support content sharing among source users, and n source users must perform n independent communications to acquire the content. These features cause considerable delivery cost and latency [8, 9]. As a novel communication model, Content-centric Content Networking (CCN) uses a name to seek potential providers in a limited broadcast way and any provider can return target content [10, 11]. Hence, CCN has a potential advantage over the address-centric networking such as the Internet in content-centric communications although it has a relatively * Xiaonan Wang [email protected] 1
Changshu Institute of Technology, Changshu 215500, Jiangsu, China
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D. Wang, X. Wang
high cost due to flooding. Inspired by the observation, we are motivated to employ the name-based mechanism to achieve content communications in the Internet and aim to reduce content communication costs and improve success rates by achieving the following objectives: 1. The content can be acquired from the nearest server rather than the target server in the unicast way. 2. If the optimal server fails to provide the content, a user can obtain the content from another server without restarting a new communication process. 3. The communication process can
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