Dynamic request distribution for enhanced Quality of Service

Abstract

The emergence of Web-services as an open components supporting flexible and inexpensive set
of distributed applications as well as exploiting them as a promising solution for integration with
other application and providers of software-hardware resources is very much in demand. Using
Web-services simplifies and enhances system functionality because of the availability of programs
interaction with each other through Internet using open protocols. Thereby it is necessary to provide
QoS provision issues such as distribution of request streams, enhanced efficiency of operations
at peak loads. One of the ways to tackle these issues is to apply dynamic request distribution which
ensures continuity of data transfer and processing ignoring crashes and equipment failures, redistribution
of data flow to the available nodes in case of their loss. Abovementioned can be achieved
using certain heuristics based on methods of Mathematical statistics and Probability modeling.
Moreover, we provide analysis of methods and models developed for QoS provision.