AppScale: Scalable and Open AppEngine Application Development and Deployment

Navraj Chohan, Chris Bunch, Sydney Pang, Chandra Krintz, Nagy Mostafa, Sunil Soman, and Rich Wolski

UCSB Technical Report 2009-02, January 27, 2009



We present the design and implementation of AppScale, an open source extension to the Google AppEngine (GAE) Platform-as-a-Service (PaaS) cloud technology. Our extensions build upon the GAE SDK to facilitate distributed execution of GAE applications over Xen-based clusters, including Infrastructure-as-a-Service (IaaS) cloud systems such as Amazon's AWS/EC2 and Eucalyptus. AppScale provides a framework with which researchers can investigate the interaction between PaaS and IaaS systems as well as the inner workings of, and new technologies for, PaaS cloud technologies using real GAE applications.