What's on in Computing Science?
Date: Tuesday, 1 March, 2005
F121 conference room
Content delivery - practice and principles
Ravi Sundaram, Northeastern University, Boston.
Title: Content delivery - practice and principles
In the short span of 5 years content delivery networks have
established themselves as an integral part of the Internet
infrastructure. Akamai, the world's largest content
delivery network has deployed over 13,000 servers on 1,000 networks at
1,500 locations around the world. These servers deliver html documents,
static images, and streaming media for over 1,300 of the most popular
content providers on the web. Over the years Akamai's systems have had to
contend with staggering growth as well as events ranging from network
partitions to denial of service attacks. Our experience has been that solid
engineering backed by sound principles and efficient algorithms is critical
for scalable and robust systems.
In this talk we consider the problem of mapping - directing
browsers to servers, which is central to content delivery networks. We
present a study of mapping from an engineering and experiential standpoint.
We explore specifically the issues involved in directing traffic to website
mirrors. Using topology discovery, clustering, congestion measurement and
load-balancing algorithms we show how FirstPoint, Akamai's DNS-based
application-level anycast service, has measurably improved the performance
of many leading websites.
Ravi is an Associate Professor at Northeastern University focused on
networks and algorithms. Formerly, Ravi was a Director of Engineering and
the head of the Mapping group at Akamai Tech, Inc from 1999 to 2001. In
this role he designed and built Akamai's core infrastructure for directing
browsers to servers. His research led to the creation of a number of new
services that are in use by companies such as Microsoft and Yahoo!.
Ravi has a BTech from IIT(Madras) and a PhD from MIT.
Contact: Dr Alice A Miller (firstname.lastname@example.org)
URL: Content delivery - practice and principles
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