Lessons

Master asynchronous processing patterns including job queues for PDF generation and WebSocket-based real-time notifications.

Learn how to implement JWT authentication, permission-based authorization, Helmet security headers, and comprehensive error management for both backend and frontend.

Learn how to set up GraphQL in your fullstack app, write queries and mutations, and compare GraphQL with REST through practical exercises.

Introduce multi-user support and money transfers to the app, using a robust Express TypeScript backend with Prisma and advanced state handling in React Router.

Going from a technical proof of concept to an application a user may want to use.

Refresh React and Express knowledge while building the foundation for a collaborative expense-sharing app with TypeScript, Vite, and modular backend architecture.