Exploring and Analysing the African Web Ecosystem
Exploring and Analysing the African Web Ecosystem
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探索和分析非洲网络生态系统
DOI：
10.1145/3213897
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发表时间：
2018
影响因子：
3.5
通讯作者：
Sathiaseelan, Arjuna
中科院分区：
文献类型：
--
作者：
Fanou, Rodérick;Tyson, Gareth;Fernandes, Eder Leao;Francois, Pierre;Valera, Francisco;Sathiaseelan, Arjuna
众所周知，非洲大陆的互联网基础设施部署正在快速发展。最近的一系列研究已经量化了这一点，突出了其底层连接网络的扩展。然而，如果没有适当的服务来利用它，改善基础设施是没有用的。本文测量了非洲网络基础设施的可用性和利用率。虽然其他人已经探索了发达地区的网络基础设施，但我们揭示了发展中地区的做法。为实现这一目标，我们采用全面的测量方法，从各种来源收集数据。我们首先关注谷歌，以揭示其在非洲的内容基础设施确实在扩大。也就是说，我们发现它的大部分网络内容仍然来自美国和欧洲，尽管它是许多非洲国家最受欢迎的网站。我们对其他一些地区流行的网站重复了同样的分析，发现即使是顶级的非洲网站也更愿意将其内容托管在国外。为了探索其中的原因，我们评估了非洲内容交付网络（CDN）面临的一些主要瓶颈。在其他因素中，我们发现托管我们的探测器的网络之间缺乏对等，阻止了CDN服务器的共享，以及配置不佳的DNS解析器。最后，我们对该地区中间盒的映射显示，非洲的透明代理比欧洲或美国更大。最后，我们提出了一些建议，以减轻所观察到的问题的工作。
It is well known that internet infrastructure deployment is progressing at a rapid pace in the African continent. A flurry of recent research has quantified this, highlighting the expansion of its underlying connectivity network. However, improving the infrastructure is not useful without appropriately provisioned services to exploit it. This article measures the availability and utilisation ofweb infrastructurein Africa. Whereas others have explored web infrastructure in developed regions, we shed light on practices in developing regions. To achieve this, we apply a comprehensive measurement methodology to collect data from a variety of sources. We first focus on Google to reveal that its content infrastructure in Africa is, indeed, expanding. That said, we find that much of its web content is still served from the US and Europe, despite being the most popular website in many African countries. We repeat the same analysis across a number of other regionally popular websites to find that even top African websites prefer to host their content abroad. To explore the reasons for this, we evaluate some of the major bottlenecks facing content delivery networks (CDNs) in Africa. Amongst other factors, we find a lack of peering between the networks hosting our probes, preventing the sharing of CDN servers, as well as poorly configured DNS resolvers. Finally, our mapping of middleboxes in the region reveals that there is a greater presence of transparent proxies in Africa than in Europe or the US. We conclude the work with a number of suggestions for alleviating the issues observed.
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DOI：
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发表时间：
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期刊：
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影响因子：
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DOI：
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发表时间：
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期刊：
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影响因子：
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作者：
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影响因子：
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DOI：
10.1109/infocom.2018.8486024
发表时间：
2018
期刊：
IEEE INFOCOM 2018 - IEEE Conference on Computer Communications
影响因子：
--
作者：
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通讯作者：
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