Module 04: Backend Basics
Implementation-first module with measurable outcomes, verification, and publish-ready deliverables.
Learning Outcomes
- REST endpoint design
- Middleware validation/auth
- Structured error handling
Execution Tasks
- Build CRUD API with validation
- Add token auth and role checks
- Implement logger + centralized errors
Expected Deliverable
Documented backend service
Quality Verification
- Feature works in happy and failure paths
- Setup steps are reproducible on clean machine
- README explains design decisions briefly
Common Mistakes
- Skipping edge-case testing
- No documentation of assumptions
- Pushing unfinished code without cleanup