A Video Caching Policy for Providing Differentiated Service Grades and Maximizing System Revenue in Hierarchical Video Servers

in Sciences Citation Index(SCI), 科學引文索引資料庫(SCI)
標題A Video Caching Policy for Providing Differentiated Service Grades and Maximizing System Revenue in Hierarchical Video Servers
出版類型SCI(Sciences Citation Index)
出版年度2004
AuthorsSheau-Ru Tong, 童曉儒
開始頁515
頁數16
出版日期2004 / 1
其他編號0000
中文摘要

Abstract
A video server normally targets at providing abundant bandwidth access and massive storage in
supporting large-scale video archival applications. Its performance is sensitive to the deployment of
the stored contents. In this paper, we propose a video caching policy for a video server, based on the
knowledge of video profiles, namely: access rate, video size and bandwidth, tolerable rejection
probability, and rental price. We consider the video server as having a hierarchical architecture
which consists of a set of high-speed disk drives located in the front end for caching a subset of
videos, and another set of high-capacity tertiary devices located in the back end for archiving the
entire video collection. The front-end disks particularly, are organized together by employing a
proposed data striping scheme, termed the adaptive striping (AS), which is flexible on
heterogeneous disk integration. The proposed policy determines what video set should be cached,
and how to arrange them in the front-end disks with two objectives in mind: (1) offering
differentiated service grades conforming to the video profiles as well as (2) maximizing the overall
system revenue. We simulate the system with various configurations, and the results affirm our
effective approach.
◎2003 Elsevier Inc. All rights reserved.
Keywords: Video server; Disk striping; Video caching policy; Resource management; QoS guarantee

網址http://140.127.22.92/xoops2/modules/tinycontent3/index.php?id=5
期刊名稱Journal of systems and software
校址:912 屏東縣內埔鄉學府路1號 總機:886-8-7703202 傳真:886-8-7740165 系統開發統維護單位:國立屏東科技大學 電算中心 版權所有