TY - CHAP
T1 - From web servers to ubiquitous content delivery
AU - Pierre, Guillaume
AU - van Steen, Maarten
AU - Szymaniak, Michał
AU - Sivasubramanian, Swaminathan
PY - 2012/12/1
Y1 - 2012/12/1
N2 - Hosting a Web site at a single server creates performance and reliability issues when request load increases, availability is at stake, and, in general, when quality-of-service demands rise. A common approach to these problems is making use of a content delivery network (CDN) that supports distribution and replication of (parts of) a Web site. The nodes of such networks are dispersed across the Internet, allowing clients to be redirected to a nearest copy of a requested document, or to balance access loads among several servers. Also, if documents are replicated, availability of a site increases. The design space for constructing a CDN is large and involves decisions concerning replica placement, client redirection policies, but also decentralization. We discuss the principles of various types of distributed Web hosting platforms and show where tradeoffs need to be made when it comes to supporting robustness, flexibility, and performance.
AB - Hosting a Web site at a single server creates performance and reliability issues when request load increases, availability is at stake, and, in general, when quality-of-service demands rise. A common approach to these problems is making use of a content delivery network (CDN) that supports distribution and replication of (parts of) a Web site. The nodes of such networks are dispersed across the Internet, allowing clients to be redirected to a nearest copy of a requested document, or to balance access loads among several servers. Also, if documents are replicated, availability of a site increases. The design space for constructing a CDN is large and involves decisions concerning replica placement, client redirection policies, but also decentralization. We discuss the principles of various types of distributed Web hosting platforms and show where tradeoffs need to be made when it comes to supporting robustness, flexibility, and performance.
KW - Content delivery networks
KW - Mirroring
KW - Peer-to-peer
KW - Replication
UR - http://www.scopus.com/inward/record.url?scp=84877996508&partnerID=8YFLogxK
M3 - Chapter
AN - SCOPUS:84877996508
SN - 9781586038502
T3 - Emerging Communication: Studies in New Technologies and Practices in Communication
SP - 324
EP - 341
BT - Global Data Management
A2 - Baldoni, Roberto
A2 - Cortese, Giovanni
A2 - Davide, Fabrizio
A2 - Melpignano, Angelo
PB - IOS Press
ER -