Internet Video Data Streaming Energy-saving and Cost-aware Methods [Paperback]

This book investigates the problem of reducing operating cost for a video streaming content delivery network (CDN), including both the CDNs energy and traffic costs. It first introduces the key issues and design choices of representative real-world CDNs, and discusses the energy saving techniques for data centers and CDNs. Then, based on a measurement study on a large video streaming CDN, it reveals an inherent conflict between improving a video streaming CDNs energy efficiency for energy saving, and maintaining the CDNs ISP-friendly server selection policy. Further, it discusses a cost-aware capacity provisioning algorithm that not only allows the service capacity of a CDNs server clusters in numerous ISPs to be dynamically planned, but also means that the overall operating cost, including both the energy consumptions and the cross-ISP traffics, can be further optimized. In addition it uses the workload derived from real-world measurement and also implements real values of the actual power and bandwidth prices to evaluate the capacity provisioning algorithm, showing that it can significantly reduce the overall operating cost of a video streaming CDN, and effectively avoid frequent server switches. Lastly, the book outlines a number of potential research directions regarding cost-aware content delivery. The measurement, analysis, and optimization methodologies and results presented in this book are of particular interest to researchers in the Internet and networking area.

Chapter 1 Introduction.- 1.1 Background.- 1.2 CDN Objectives.- 1.3 Challenges in CDN.- 1.4 Energy-saving and Cost-aware Content Delivery.- Chapter 2 Content Delivery Networks and Its Interplay with ISPs.- 2.1 CDNs in Real World.- 2.2 Interplay between CDN and ISP.- Chapter 3 Energy Management.- 3.1 Energy Saving for Data Center.- 3.2 Energy Saving for CDN.- Chapter 4 Cost Measurement for Internet Video Streaming.- 4.1 Measurement lã'