NDLI: Quantifying the benefits of joint content and network routing

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Quantifying the benefits of joint content and network routing

Content Provider	ACM Digital Library
Author	Valancius, Vytautas Ravi, Bharath Snoeren, Alex C. Feamster, Nick
Abstract	Online service providers aim to provide good performance for an increasingly diverse set of applications and services. One of the most effective ways to improve service performance is to replicate the service closer to the end users. Replication alone, however, has its limits: while operators can replicate static content, wide-scale replication of dynamic content is not always feasible or cost effective. To improve the latency of such services many operators turn to Internet traffic engineering. In this paper, we study the benefits of performing replica-to-end-user mappings in conjunction with active Internet traffic engineering. We present the design of PECAN, a system that controls both the selection of replicas ("content routing") and the routes between the clients and their associated replicas ("network routing"). We emulate a replicated service that can perform both content and network routing by deploying PECAN on a distributed testbed. In our testbed, we see that jointly performing content and network routing can reduce round-trip latency by 4.3% on average over performing content routing alone (potentially reducing service response times by tens of milliseconds or more) and that most of these gains can be realized with no more than five alternate routes at each replica.
Starting Page	243
Ending Page	254
Page Count	12
File Format	PDF
ISBN	9781450319003
DOI	10.1145/2465529.2465762
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2013-06-17
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Wide-area routing Content delivery
Content Type	Text
Resource Type	Article

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