Recursive software rejuvenation for high available e-business cluster systems

Abstract

The demand for high availability e-Business applications such as transaction-handling systems, require dynamic Quality of service (QoS) guarantee from service servers. While with the increasing complexity, the systems are liable to failure even aided by the redundant techniques. In this paper, we build the recursive software rejuvenation model to improve system availability, Negotiated with the redundant techniques both on the in- node level and on the system level. Calculating the service availability Marko-vain model for unified failure-recovery mechanism, we get the maximized steady-state availability and the optimal rejuvenation schedules under different level scenarios. Numerical examples illustrate that this strategy can lower the cost for rejuvenation and improve the system's availability; this provides strategies for improving E-Business system's availability. © Springer-Verlag Berlin Heidelberg 2012.