Paper Info
Title
Perceiving Internet Anomalies via CDN Replica Shifts
Abstract
Anomalies are a ubiquitous and inevitable phenomenon associated with a complex and large-scale system such as the Internet. While measuring and analyzing network anomalies is as old as the Internet itself, comprehensively detecting anomalies at a global scale is a challenging task that requires a significant measurement infrastructure. In this paper, we demonstrate that the production Content Distribution Networks (CDNs), and their pervasive network infrastructure, could be effectively utilized to detect Internet anomalies. Our approach avoids direct network measurements and instead relies on “abnormal” spatial and temporal CDN replica shifts to indirectly sense anomalies. We measure replica shifts for five CDNs (Google, Amazon, Akamai, Fastly, and Incapsula) for two months. Contrary to our expectations, we find that (i) Google's and Amazon's CDNs, which are characterized by rich connectivity and infrastructure, are not best suited for our method because they effectively mask anomalies; (ii) Akamai is the most “sophisticated” of all evaluated CDNs, yet again not best suited to detect anomalies because it reacts exceptionally to much smaller network performance variations; (iii) Fastly's and Incapsula's replica shifts strongly correlate with network anomalies, making them viable anomaly predictors.
Year
Venue
Keywords
2019
ieee international conference computer and communications
Internet,Servers,Google,Reliability,Load management,Maintenance engineering,Packet loss
Field
DocType
ISSN
Load management,Replica,Computer science,Distribution networks,Server,Computer network,Packet loss,Maintenance engineering,The Internet,Distributed computing,Network performance
Conference
0743-166X
ISBN
Citations 
PageRank 
978-1-7281-0515-4
0
0.34
References 
Authors
0
2
Name
Order
Citations
PageRank
Yihao Jia100.34
Aleksandar Kuzmanovic296071.99