Building a real-world, Internet- scale stock trading application Naveen Prabhu Quadwave Consulting Pvt. Ltd.

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Project Description BUILD A WORLD CLASS RIA BASED TRADING APPLICATION BUILD NEXT GENERATION USER EXPERIENCE FOR WEB

Project Goals Build application on RIA Platform Extend the existing back end application framework Build an extensible UI to ensure additions of features without re-writing the presentation layer Build a high performance system accessible on the web with performance matching thick client based applications

Initial Discussions XML v/s other traditional mode for data exchange Framework v/s Custom Designs User Experience Concepts Performance and Memory management Build v/s Buy on Components

Proof of Concepts Performance difference between XML and Other mode of data exchange UI Virtualization Messaging support Layout Manager Charts

High Level Logical Architecture Browser Web Server & Messaging Server APPLICATION SERVER HTTPS

Silverlight Application Design Download Mgr. UI Layer Data source Request / Response Mgr. Request / Response Mgr. Messaging Client UI Layout Manager Web Server & Messaging Server Application Server

Base Class Standard Interfaces for: –Download –Request & Response –Messaging

UI Layer Inherited from Base Class Silverlight Native Controls Containers –Scroll Viewer –Grid UI Virtualization Each functional module an Independent XAP Internal Filter management (to manage server load)

UI Layout Manager Inherited from Base Class Canvas Interface with Download manager Widget State management

Data source 2 way data binding Observable Collections Custom Event for managing business logic (Property change call back event) Dependency Property (Memory Management) Subscription channel management (based on subscribed entity visibility) Alert Engine

Request / Response Manager Requestor –Type enumerated REST/WCF calls Parser –Request type based parsing –Updates data source

Messaging Socket connections Subscription model Subscription for only active/visible entities Managing only Data store not UI Connection state management

Typical Technical Challenges Application Size exceeded 5 MB Data filter management Messaging subscription issues Using effects library (shadow/blur) Data management

Thank You Questions Please

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