Request distribution toolkit for virtual resources allocation

Abstract

The Service Oriented Architecture (SOA) concept facilitates building flexible services that can be deployed in distributed environment, and executed on different hardware and software platforms. On the other hand SOA paradigm rises many challenges in the area of Quality of Service and resources utilization. In the paper Resources Distribution Manager (RDM) that manages resources and service delivery in order to satisfy user requirements and service provider's needs is presented. Requests for services are distributed to selected virtualized instances of services or optionally new instances are created for handling the requests. The allocation decisions are based on the knowledge about the communication resources and the current load of computational resources which are dynamically monitored by special RDM module. The decision on the resources allocation is then compared with its utilization during service execution and causes changes in allocation strategy. © 2012 Springer-Verlag.