Implementation and Analysis of Autonomic Management SaaSEHR System

摘要

To provide a single Instance of a software service to multiple users is great thing about SaaS for software vendors is that multiple-users can access the same instance of a software service. This means that software vendors can save a lot of the money and the resources by running just a single instance of a software service, which can then be accessed by many users. But the big challenge face the SaaS application is administrators need to be able to not only monitor overall health of the application but also the performance issues related to a specific tenant. To solve this problem we follow autonomic MAPE loop in our SaaS model which include three management levels. By keep alive models with implementations we monitor prior and posterior knowledge. And we have used PRISM as model checker to dynamic analysis QoS requirements. However to obtain good performance in execution state we have design autonomic algorithm that plan to select suitable solution for the problem. We have defined the functional a nonfunctional requirements of SaaS application by electronic health record as case study. The result is implementing new SaaS system manage without user intervention. Finally we present a conclusion and the future work.