Danzhen Wang

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We present the availability model of a high availability SIP Application Server configuration on WebSphere. Hardware , operating system and application server failures are considered. Different types of fault detectors, detection delays , failover delays, restarts, reboots and repairs are considered. Imperfect coverages for detection, failover and recovery(More)
Due to high dynamic computing environments of ubiquitous computing, it poses many challenges for software middleware technologies. The component-based middleware systems should possess self-adjusting functions for adapt to internal and external environments variation. This paper firstly describes a middleware called SCUDWare for smart vehicle space in(More)
We present the availability model of a high availability SIP Application Server configuration on WebSphere. Hardware,operating system and application server failures are considered. Different types of fault detectors, detection delays,failover delays, restarts, reboots and repairs are considered.Imperfect coverages for detection, failover and recovery are(More)
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