Conference Paper

Management of Distributed and Redundant Storage in High Demand Web Servers for Heterogeneous Networks Access by Agents.

DOI: 10.1007/978-3-540-85863-8_16 Conference: International Symposium on Distributed Computing and Artificial Intelligence, DCAI 2008, University of Salamanca, Spain, 22th-24th October 2008
Source: DBLP

ABSTRACT To improve the performance of a web server, the most usual solution is based on construcingt a distributed architecture, in
which a set of nodes offer the web service. A web site is composed by a set of elements or resources, where each one of them
can be of a specific type. The present article describes a new architecture proposed to add dynamic replication of the resources,
supporting high demand file provisioning for web-based access arriving from heterogeneous (mobile & fixed) networks.

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    ABSTRACT: The most usual solution to improve the performance of a Web server is based on building a distributed architecture, where the Web server is offered from a set of nodes. The most widely distributed architecture is based on Web clusters including a Web switch. The Web switch is responsible for deciding which site’s node must attend which request. When deciding where elements are stored the classical solution was to fully replicate all contents in every server node. However, partial replication may require a fraction of storage while offering the same level of reliability. In this paper we report a solution based on dynamic partial replication where the number of replicas for each file and its management is handled by an agent architecture. We compare our solution with full replication and with static partial replication both in terms of storage capacity consumption and service time. Our results show that our proposed solution provides equivalent performance with a better use of disk storage capacity.
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