Title :
Vivisecting YouTube: An active measurement study
Author :
Adhikari, Vijay Kumar ; Jain, Sourabh ; Chen, Yingying ; Zhang, Zhi-Li
Author_Institution :
Univ. of Minnesota, Minneapolis, MN, USA
Abstract :
We deduce key design features behind the YouTube video delivery system by building a distributed active measurement infrastructure, and collecting and analyzing a large volume of video playback logs, DNS mappings and latency data. We find that the design of YouTube video delivery system consists of three major components: a “flat” video id space, multiple DNS namespaces reflecting a multi-layered logical organization of video servers, and a 3-tier physical cache hierarchy. We also uncover that YouTube employs a set of sophisticated mechanisms to handle video delivery dynamics such as cache misses and load sharing among its distributed cache locations and data centers.
Keywords :
cache storage; file servers; social networking (online); video retrieval; 3-tier physical cache hierarchy; DNS mapping; DNS namespace; YouTube; data center; distributed active measurement infrastructure; distributed cache location; flat video id space; latency data; load sharing; multilayered logical organization; video delivery system; video playback log analysis; video playback log collection; video server; Delay; Extraterrestrial measurements; Google; IP networks; Servers; Unicast; YouTube;
Conference_Titel :
INFOCOM, 2012 Proceedings IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-0773-4
DOI :
10.1109/INFCOM.2012.6195644
