Title
CDNs Content Outsourcing via Generalized Communities
Abstract
Content Distribution Networks (CDNs) balance costs and quality in services related to content delivery. Devising an efficient content outsourcing policy is crucial since, based on such policies, CDN providers can provide client-tailored content, improve performance, and result in significant economical gains. Earlier content outsourcing approaches may often prove ineffective since they drive prefetching decisions by assuming knowledge of content popularity statistics, which are not always available and are extremely volatile. This work addresses this issue, by proposing a novel self-adaptive technique under a CDN framework on which outsourced content is identified with no a-priori knowledge of (earlier) request statistics. This is employed by using a structure-based approach identifying coherent clusters of "correlated" Web server content objects, the so-called Web page communities. These communities are the core outsourcing unit and in this paper a detailed simulation experimentation has shown that the proposed technique is robust and effective in reducing user-perceived latency as compared with competing approaches, i.e., two communities-based approaches, Web caching, and non-CDN.
Year
DOI
Venue
2009
10.1109/TKDE.2008.92
IEEE Trans. Knowl. Data Eng.
Keywords
Field
DocType
cdns content outsourcing,social network analysis.,content popularity statistic,generalized communities,index terms—caching,web communities,client-tailored content,replication,core outsourcing unit,content distribution networks,web server content object,content outsourcing approach,cdn provider,content delivery,a-priori knowledge,efficient content,cdn framework,acceleration,social network analysis,statistics,outsourcing,web server,bandwidth,web pages,internet,a priori knowledge,indexing terms,content management
Data mining,World Wide Web,Service quality,Web page,Computer science,Social network analysis,Server,Outsourcing,Content management,Web server,The Internet
Journal
Volume
Issue
ISSN
21
1
1041-4347
Citations 
PageRank 
References 
12
0.91
29
Authors
6
Name
Order
Citations
PageRank
Dimitrios Katsaros1104868.66
George Pallis270950.32
Konstantinos Stamos31117.44
Athena Vakali41457129.68
Antonis Sidiropoulos538027.27
Yannis Manolopoulos64494534.37