Redesigning cdn-broker interactions for improved content delivery


Conference Paper

© 2017 Association for Computing Machinery. Various trends are reshaping Internet video delivery: exponential growth in video traffic, rising expectations of high video quality of experience (QoE), and the proliferation of varied content delivery network (CDN) deployments (e.g., cloud computing-based, content provider-owned datacenters, and ISP-owned CDNs). More fundamentally though, content providers are shifting delivery from a single CDN to multiple CDNs, through the use of a content broker. Brokers have been shown to invalidate many traditional delivery assumptions (e.g., shifting traffic invalidates short- and long-term traffic prediction) by not communicating their decisions with CDNs. In this work, we analyze these problems using data from a CDN and a broker. We examine the design space of potential solutions, finding that a marketplace design (inspired by advertising exchanges) potentially provides interesting tradeoffs. A marketplace allows all CDNs to profit on video delivery through fine-grained pricing and optimization, where CDNs learn risk-adverse bidding strategies to aid in traffic prediction. We implement a marketplace-based system (which we dub Video Delivery eXchange or VDX) in CDN and broker data-driven simulation, finding significant improvements in cost and data-path distance.

Full Text

Duke Authors

Cited Authors

  • Mukerjee, MK; Bozkurt, IN; Ray, D; Maggs, BM; Seshan, S; Zhang, H

Published Date

  • November 28, 2017

Published In

  • Conext 2017 Proceedings of the 2017 13th International Conference on Emerging Networking Experiments and Technologies

Start / End Page

  • 68 - 80

International Standard Book Number 13 (ISBN-13)

  • 9781450354226

Digital Object Identifier (DOI)

  • 10.1145/3143361.3143366

Citation Source

  • Scopus