How I Implemented Role-Based Authentication in MERN

While building ClassSync, I needed a way to separate teacher and student permissions. I implemented role-based authentication using JWT. Each user gets a token that includes their role, and middleware checks permissions before allowing access. For example: - Teachers can create and manage content - Students can only view and submit assignments This taught me how important middleware is in backend systems. Instead of repeating logic, I centralized access control in one place. It’s a simple system, but it reflects how real applications manage permissions.