O'Dwyer, Karl J. and Creedon, Eoin and Purcell, Mark and Malone, David
Power Saving for Web Servers Using Proxies.
Sustainable Internet and ICT for Sustainability (SustainIT), 2013.
IEEE, pp. 1-5.
Electricity is a major cost in running a
data centre, and servers are responsible for a signifi-
cant percentage of the power consumption. With the
rising cost of electricity and slow adoption of cleaner
electricity-generating technology, servers should be-
come more energy efficient.
This paper looks at web servers, as HTTP is a com-
mon service provided by data centres. Reverse proxies
are commonly used to improve the performance of web
servers. In this paper, we consider how reverse proxies
might be used to improve energy efficiency.We suggest
that when demand on a server is low, it may be possible
to switch off servers. In their absence, an embedded
system with a small energy footprint could act as
a reverse proxy serving commonly-requested content.
When demand outstrips its capacity, the reverse proxy
can power on the servers to meet this new load. Our
initial results indicate that such a scheme could be
practical and save significant power on servers with
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