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This book investigates the cloud-based techniques of content
distribution mainly for mobile Internet. It starts with hot topics
such as cellular traffic optimization and video content delivery.
By integrating the cloud scheme, it further tackles issues of
traffic-saving, energy-efficient, high-speed, and delay-tolerant
content delivery with regard to mobile Internet. It covers both
theoretical algorithms and their real-world system implementations.
In particular, various well-known cloud platforms such as Baidu
Traffic Guard, Tencent QQXuanfeng, Google Drive, Microsoft
OneDrive, and Dropbox are elaborated respectively in the book.
Lastly, it includes an educational and experimental cloud computing
platform allowing public access, which benefits researchers,
practitioners, and developers in the field of cloud
computing/storage and mobile Internet. Throughout the book there
are helpful and practical tips on setting up cloud systems that
readers can easily follow.
Content distribution, i.e., distributing digital content from one
node to another node or multiple nodes, is the most fundamental
function of the Internet. Since Amazon's launch of EC2 in 2006 and
Apple's release of the iPhone in 2007, Internet content
distribution has shown a strong trend toward polarization. On the
one hand, considerable investments have been made in creating
heavyweight, integrated data centers ("heavy-cloud") all over the
world, in order to achieve economies of scale and high
flexibility/efficiency of content distribution. On the other hand,
end-user devices ("light-end") have become increasingly
lightweight, mobile and heterogeneous, creating new demands
concerning traffic usage, energy consumption, bandwidth, latency,
reliability, and/or the security of content distribution. Based on
comprehensive real-world measurements at scale, we observe that
existing content distribution techniques often perform poorly under
the abovementioned new circumstances. Motivated by the trend of
"heavy-cloud vs. light-end," this book is dedicated to uncovering
the root causes of today's mobile networking problems and designing
innovative cloud-based solutions to practically address such
problems. Our work has produced not only academic papers published
in prestigious conference proceedings like SIGCOMM, NSDI, MobiCom
and MobiSys, but also concrete effects on industrial systems such
as Xiaomi Mobile, MIUI OS, Tencent App Store, Baidu PhoneGuard, and
WiFi.com. A series of practical takeaways and easy-to-follow
testimonials are provided to researchers and practitioners working
in mobile networking and cloud computing. In addition, we have
released as much code and data used in our research as possible to
benefit the community.
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