EasyER: Emergency Room Scheduler
A full-stack web application that streamlines patient management in emergency departments through automated triage and role-based interfaces for medical staff.
Project Details
Client
Personal Project
Year
2022
Role
Full Stack Developer
Technologies
The Challenge
The primary challenge was learning C# and developing my first full-stack application using the .NET ecosystem. Having previously worked primarily with JavaScript frameworks, this project represented a significant shift in technology stack and development paradigm. I needed to rapidly gain proficiency in C#, ASP.NET Core, Blazor WebAssembly, and Entity Framework while simultaneously designing and implementing a complex system with multiple user roles and workflows.
The Solution
I developed EasyER, a lightweight but robust patient management system using ASP.NET Core 6.0 and Blazor WebAssembly. The application features automated patient triage based on trauma levels and wait times, real-time patient queues, and role-based interfaces for nurses, doctors, and administrators. The system follows a clean architecture with separate contexts for different domains, making it maintainable and extensible.
Technical Implementation
Architecture
- •Modern client-server architecture with Blazor WebAssembly SPA and ASP.NET Core 6.0 backend
- •Repository pattern to separate data access logic from controllers
- •Entity Framework Core with code-first migrations
- •JWT-based authentication with ASP.NET Identity
- •Role-based authorization controlling access to features
Frontend Implementation
- •Responsive UI built with Blazor WebAssembly and Bootstrap
- •Role-specific components and layouts
- •Real-time patient queue with automatic updates
- •Form validation with data annotations
- •Custom authentication state provider
Backend Implementation
- •RESTful API endpoints for CRUD operations
- •Custom middleware for exception handling and logging
- •Dependency injection for loosely coupled components
- •Unit tests with NUnit and Moq
- •Azure Web App deployment with CI/CD pipeline
Database Design
- •Code-first migrations with Entity Framework Core to evolve the database schema
- •SQL Server with separate contexts for patients, doctors, and nurses
- •Entity relationships modeling hospital workflows
- •Optimized queries for high-traffic operations
- •Data seeding for development and testing
Key Features
Automated Patient Triage
Algorithmic prioritization of patients based on trauma level and wait time, ensuring the most urgent cases are treated first
Role-Based Access Control
Tailored interfaces for nurses (patient intake), doctors (treatment), and administrators (system management)
Real-Time Patient Queue
Dynamic display of patients sorted by urgency with color-coded indicators for quick visual assessment
Doctor-Patient Assignment
Tracking system for doctor-patient relationships, balancing workloads and ensuring accountability
Lessons Learned
This project deepened my understanding of technical concepts and implementation strategies. Key insights include:
- 1.Blazor WebAssembly provides a compelling alternative to JavaScript frameworks for .NET developers, enabling code sharing between client and server
- 2.Entity Framework Core's migrations are powerful but require careful planning to avoid performance issues in production
- 3.Role-based authorization is most effective when designed around specific user workflows rather than abstract permissions
- 4.Repository pattern significantly improves testability but introduces overhead that should be justified by project complexity
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