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SUMMARY:Content Placement as a Key to Leveraging Geo-Distributed Infrastru
 ctures - Abhigyan Sharma\, University of Massachusetts Amherst
DTSTART:20150309T100000Z
DTEND:20150309T110000Z
UID:TALK58315@talks.cam.ac.uk
CONTACT:Microsoft Research Cambridge Talks Admins
DESCRIPTION:The evolution of computing infrastructure points to a future w
 ith massively geo-distributed infrastructures deployed at hundreds or even
  thousands of locations. In parallel\, the evolution of users’ traffic d
 emands is making two challenges increasingly prominent on the Internet. Fi
 rst\, a rapid growth in traffic\, especially video traffic\, is increasing
  the cost for Internet service providers (ISPs) who carry this traffic on 
 their network backbone. Second\, the Internet’s poor infrastructure supp
 ort for mobility is increasingly visible at a time when end-users are pred
 ominantly mobile.\n\nIn this talk\, I will show that leveraging geo-distri
 buted infrastructures and more importantly\, the flexibility of placing co
 ntent on them\, can help reduce the cost of carrying network traffic in IS
 Ps  as well as enhance support for mobility on the Internet. In the first 
 part of the talk\, we consider an ISP that also deploys a content delivery
  network across its point-of-presence locations. In such ISPs\, we show th
 at the flexibility to place content is so powerful that even simple placem
 ent schemes can singlehandedly achieve network cost and end-user performan
 ce close to an ideal scheme with future knowledge. Moreover\, simple place
 ment schemes provide these benefits even with a simple\, static network ro
 uting\, potentially simplifying the task of route optimization for such IS
 Ps.  In the next part of the talk\, we present a global name service Auspi
 ce that supports secure\, name-based communication between mobile entities
  on the Internet. Auspice addresses the challenge of rapidly resolving nam
 es to network locations under high mobility. To this end\, its demand-awar
 e replica placement engine intelligently replicates name records to provid
 e low lookup latency\, low update cost\, and high availability.  Auspice e
 asily outperforms several commercial managed DNS providers as well as stat
 e-of-the-art research alternatives in our experiments.
LOCATION:Auditorium\, Microsoft Research Ltd\, 21 Station Road\, Cambridge
 \, CB1 2FB
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