Survey on peer-assisted content delivery networks

Anjum, Nasreen; Karamshuk, Dmytro; Shikh-Bahaei, Mohammad; Sastry, Nishanth

doi:10.1016/j.comnet.2017.02.008

Cited by 84 publications

(41 citation statements)

References 44 publications

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“…They are deployed to serve contents to customers in geographical proximity, and are, in fact, now responsible for serving the majority of current internet traffic. Several studies have shown that the traditional CDN is insufficient to handle the rapidly increasing data contents and traffic . To tackle the scalability issues, abundant research have investigated the potential of using peer‐to‐peer (P2P) systems to assist CDNs, namely peer‐assisted CDNs .…”

Section: Introductionmentioning

confidence: 99%

Peer‐assisted content delivery network by vehicular clouds: Algorithm and evaluation

Tseng

Mantica

DeAntonis

et al. 2019

Internet Technology Letters

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In this paper, we study how to improve the performance of content delivery networks (CDNs) using the novel concept of vehicular clouds. Our main idea is to use a cluster of connected vehicles (ie, vehicular clouds) to act as virtual servers in CDNs in order to relieve the workload of physical CDN servers. The key benefits include guaranteed content availability/reliability in terms of mean time between failures and optimized data storage workload at vehicular clouds. Workload is an important metric as it is directly related to the latency of content delivery. Specifically, we present a content placement algorithm that has an optimal workload at vehicular clouds. Finally, we verify the system efficacy using our own simulator based on simulation of urban mobility (SUMO) and Python. K E Y W O R D Savailability/reliability, CDN, micro-clouds, peer-assisted CDN, vehicular clouds 1 Internet Technology Letters. 2019;2:e103.wileyonlinelibrary.com/journal/itl2

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Section: Introductionmentioning

confidence: 99%

Peer‐assisted content delivery network by vehicular clouds: Algorithm and evaluation

Tseng

Mantica

DeAntonis

et al. 2019

Internet Technology Letters

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“…At first, these were largely peer-to-peer, e.g., LifeSocial.KOM [18] and PeerSON [7], and relied on entirely decentralised protocols. Unfortunately, they did not achieve widespread adoption partly due to challenges related to both performance [4] and reliability [25]. Thus, a new wave of DW platforms has emerged that rely on a server-based federated model, e.g., Mastodon.…”

Section: Related Workmentioning

confidence: 99%

“…Again, this has a notable impact: 11% of instances are unavailable for half of our measurement period. 4. There are content-driven pressures towards centralisation.…”

Section: Introductionmentioning

confidence: 99%

Challenges in the Decentralised Web

Raman

Joglekar

Cristofaro

et al. 2019

Proceedings of the Internet Measurement Conference

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The Decentralised Web (DW) has recently seen a renewed momentum, with a number of DW platforms like Mastodon, Peer-Tube, and Hubzilla gaining increasing traction. These offer alternatives to traditional social networks like Twitter, YouTube, and Facebook, by enabling the operation of web infrastructure and services without centralised ownership or control. Although their services differ greatly, modern DW platforms mostly rely on two key innovations: first, their open source software allows anybody to setup independent servers ("instances") that people can sign-up to and use within a local community; and second, they build on top of federation protocols so that instances can mesh together, in a peer-to-peer fashion, to offer a globally integrated platform.In this paper, we present a measurement-driven exploration of these two innovations, using a popular DW microblogging platform (Mastodon) as a case study. We focus on identifying key challenges that might disrupt continuing efforts to decentralise the web, and empirically highlight a number of properties that are creating natural pressures towards recentralisation. Finally, our measurements shed light on the behaviour of both administrators (i.e., people setting up instances) and regular users who sign-up to the platforms, also discussing a few techniques that may address some of the issues observed.

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“…Peer-assisted CDNs have evolved to reduce these costs and also to allow access to lower latency peers. In this model, centralized services are supplemented with the resources of end users, or peers [12,24]. By allowing anyone to join, and exchanging service for a payment, this paradigm creates robust, performant, and flexible systems.…”

Section: Introductionmentioning

confidence: 99%

CAPnet: A Defense Against Cache Accounting Attacks on Content Distribution Networks

Almashaqbeh

Kelley²,

Bishop

et al. 2019

2019 IEEE Conference on Communications and Network Security (CNS)

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Peer-assisted content distribution networks (CDNs) have emerged to improve performance and reduce deployment costs of traditional, infrastructure-based content delivery networks. This is done by employing peer-to-peer data transfers to supplement the resources of the network infrastructure. However, these hybrid systems are vulnerable to accounting attacks in which the peers, or caches, collude with clients in order to report that content was transferred when it was not. This is a particular issue in systems that incentivize cache participation, because malicious caches may collect rewards from the content publishers operating the CDN without doing any useful work. In this paper, we introduce CAPnet, the first technique that lets untrusted caches join a peer-assisted CDN while providing a bound on the effectiveness of accounting attacks. At its heart is a lightweight cache accountability puzzle that clients must solve before caches are given credit. This puzzle requires colocating the data a client has requested, so its solution confirms that the content (or at least an amount of data within a pre-configured bound) has actually been retrieved. We analyze the security and overhead of our scheme in realistic scenarios. The results show that a modest client machine using a single core can solve puzzles at a rate sufficient to simultaneously watch dozens of 1080p videos. The technique is designed to be even more scalable on the server side. In our experiments, one core of a single low-end machine is able to generate puzzles for 4.26 Tbps of bandwidth -enabling 870,000 clients to concurrently view the same 1080p video. This demonstrates that our scheme can ensure cache accountability without degrading system productivity.

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Survey on peer-assisted content delivery networks

Cited by 84 publications

References 44 publications

Peer‐assisted content delivery network by vehicular clouds: Algorithm and evaluation

Peer‐assisted content delivery network by vehicular clouds: Algorithm and evaluation

Challenges in the Decentralised Web

CAPnet: A Defense Against Cache Accounting Attacks on Content Distribution Networks

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