Distributed server selection and admission control in replicated web systems

Novella Bartolini, G. Bongiovanni, S. Silvestri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

This paper addresses the problems of admission control and server selection in a system consisting of several geographically replicated web servers and several access points. We propose a fully distributed solution in which every access point continuously monitors the availability of all server side resources, using a mixture of active and passive measurements. Based on those measures, each access point autonomously applies its decisions to the requests it receives. Admission control is performed prioritizing requests belonging to already admitted sessions, in order to maximize the chance of successfully terminating ongoing sessions. Furthermore, session information is taken into account when performing a probabilistic request redirection and server choice, in order to improve load balancing and mitigate flash crowd effects. Extensive simulations, performed in compliance with industry standards, show that our method exhibits a stable behavior during overloads and improves service quality in terms of both reduced response time and higher successful session termination.

Original languageEnglish (US)
Title of host publicationSixth International Symposium on Parallel and Distributed Computing, ISPDC 2007
DOIs
StatePublished - Oct 22 2007
Event6th International Symposium on Parallel and Distributed Computing, ISPDC 2007 - Hagenburg, Austria
Duration: Jul 5 2007Jul 8 2007

Publication series

NameSixth International Symposium on Parallel and Distributed Computing, ISPDC 2007

Other

Other6th International Symposium on Parallel and Distributed Computing, ISPDC 2007
CountryAustria
CityHagenburg
Period7/5/077/8/07

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Hardware and Architecture
  • Software

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