SPIAR: an architectural style for single page internet applications

A new breed of Web application, dubbed AJAX, is emerging in response to a limited degree of interactivity in large-grain stateless Web interactions. At the heart of this new approach lies a single page interaction model that facilitates rich interactivity. In this paper, we examine the architectural properties of such applications and introduce the SPIAR architectural style. We describe the guiding software engineering principles and the constraints chosen to induce the desired properties. The style emphasizes single page interfaces, user interface component development, and intermediary delta-communication between client/server components, to improve user interactivity and reduce user-perceived latency. In addition, SPIAR is used as an abstract model to present and discuss the architecture of Backbase, one of the most mature single page Internet application development frameworks available to date