Journal
Scientific and technical journal «Priborostroenie»
UDK004-75
Issue:8 (66)
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DETERMINING THE CLUSTER SIZE AND THE NUMBER OF REPLICAS OF HIGHLY LOADED INFORMATION SYSTEMS
Annotation
The problem of ensuring the quality of customer service for highly loaded information systems is discussed. Existing solutions for scaling highly loaded information systems are considered. A procedure for determining the required number of nodes in a computing cluster based on the queuing theory is proposed. Results of a computational experiment on choosing the size of a computational cluster to ensure the average time for a user request executing to be below the established allowable time, are presented. A model for determining the number of replicas is proposed, in which, at a given intensity of incoming update requests, it is possible to avoid the critical level of the write-write conflict.
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