Skip to main content
Skip to "About government"
Language selection
English
Gouvernement du Canada /
Government of Canada
Recherche
Chercher dans le site Web
Recherche
Menu
Menu
principal
Emplois et milieu de travail
Immigration et citoyenneté
Voyage et tourisme
Entreprises et industrie
Prestations
Santé
Impôts
Environnement et ressources naturelles
Sécurité nationale et défense
Culture, histoire et sport
Services de police, justice et urgences
Transport et infrastructure
Canada et le monde
Argent et finances
Science et innovation
You are here:
Canada.ca
Bibliothèque et Archives Canada
Services
Services aux bibliothèques, archives et musées
Thèses Canada
Item – Thèses Canada
Contenu de la page
Item – Thèses Canada
Numéro d'OCLC
244651598
Lien(s) vers le texte intégral
Exemplaire de BAC
Exemplaire de BAC
Auteur
Haddad, Ibrahim,1974-
Titre
The HAS architecture : a highly available and scalable cluster architecture for Web servers.
Diplôme
Ph. D. -- Concordia University, 2006
Éditeur
Ottawa : Library and Archives Canada = Bibliothèque et Archives Canada, [2007]
Description
2 microfiches
Notes
Includes bibliographical references.
Résumé
This dissertation proposes a novel architecture, called the HAS architecture, for highly available and scalable web server clusters. The proof-of-concept of the HAS architecture was validated for performance and scalability, tested for its failover mechanisms, and externally modeled and simulated to study the failure and repair behavior and to calculate the availability of the cluster. The HAS architecture is able to maintain the base line performance per cluster processor, for up to 16 traffic processors in the cluster, achieving close to linear scalability. The architecture supports dynamic traffic distribution, supports heterogeneous cluster nodes, provides a mechanism to keep track of available cluster nodes, and offers connection synchronization to ensure that web connections survive software or hardware failures. Furthermore, the architecture supports different redundancy models and high availability capabilities such as Ethernet and NFS redundancy, and node level redundancy that contribute in increasing the availability of the service, and in eliminating single points of failure. This dissertation presents current methods for scaling web servers, discusses their limitations, and investigates how clustering technologies can help overcome some of these challenges and enable the design of scalable web servers based on a cluster of workstations. It examines various ongoing research projects in the academia and the industry that are investigating scalable and highly available architectures for web servers. It discusses their scope, architecture, provides a critical analysis of their work, and presents their contributions to this dissertation. This dissertation contributes the HAS architecture, a highly available and scalable architecture for web servers, and offers contributions in areas of scalability, maintaining baseline performance, and availability.
ISBN
9780494162842
0494162848
Date de modification :
2022-09-01