Application Overview
vFabric’s Reference Application, SpringTrader, provides customers with an end-to-end solution for developing, provisioning, and managing a distributed application in a cloud environment. The reference application and architecture provide customers and partners with a blueprint for development, infrastructure, and operations teams.
The SpringTrader application is based on the web based Trading application, Day Trader. The legacy Day Trader application provides context for application modernization by representing the “before” picture while SpringTrader provides developers with a blueprint for achieving the “after” picture. Functionally, both applications allow users to login, view their portfolio, lookup stock quotes, and buy or sell stock shares. However, this is where their similarity ends. The following table describes key high-level differences in the application design:
- Presentation – SpringTrader’s user interface is built upon open standards such as HTML 5, CSS 3, and Javascript. The user interface provides an optimized experience for clients with different form factors: browser, tablet or phone. The majority of the client side code is shared regardless of the client type.
Unlike legacy presentation techniques, the reference application never performs full-page refreshes from the server side (multi-page interface). Once loaded, the client side invokes the server side application services to retrieve data in JSON format. This way, only sections of the page that have changed are updated. This approach improves client side performance and overall usability of the application. Developers commonly refer to this approach as a single page interface