Towards a Scalable PaaS for Service Oriented Software

Software developers with service oriented technologies usually put a lot of efforts to deploy and manage supporting middleware and tools. Meanwhile PaaS in cloud computing aims at provide efficient support for software developers. In the light of this consideration, we have designed and implemented Service4All, a service cloud platform targeting at improve productivity of service oriented software developers. In this paper, we describe the design of SAE, a key component in Service4All, in terms of scalability. First, we present the key technical issues and architecture design of SAE. Second, we describe a software appliance based mechanism for elastic middleware management. Third, we describe a micro-kernel based AppEngine core for efficient coordination of various components. Finally, through a real application deployed on Service4All, we demonstrate the effectiveness of our solution.