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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Redundant Distribution of Requests Through the Network by Transferring Them Over Multiple Paths
verfasst von : V. A. Bogatyrev, S. A. Parshutina
Erschienen in: Distributed Computer and Communication Networks
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Abstract
The research focuses on opportunities of multipath routing for providing reliability and fault-tolerance of distributed computing systems, given that requests are distributed dynamically through the network. There are proposed models for non-redundant and redundant search for available servers, which are ready to serve incoming requests. Server unavailability occurs due to faults, temporary shutdown, or overload with requests arriving from the network. An unavailable server rejects incoming requests, which thereafter underlie the flow of repeated requests, or those sent to other servers time and again, until they are finally accepted. Transferring requests repeatedly and, in case of redundant search, polling several servers simultaneously cause the increase in the network load. It is found that searching for an available server over multiple paths at once results in the decreased requests’ time in the system, provided that server availability and the intensity of request flow are not high.