FastAPI Development Guidance for building APIs with FastAPI following best practices. --- Core Concepts Route Decorators | Decorator | HTTP Method | Use Case | |-----------|-------------|----------| | | GET | Retrieve data | | | POST | Create resource | | | PUT | Full update | | | PATCH | Partial update | | | DELETE | Remove resource | Response Status Codes | Code | Meaning | When to Use | |------|---------|-------------| | 200 | OK | Successful GET/PUT/PATCH | | 201 | Created | Successful POST | | 204 | No Content | Successful DELETE | | 400 | Bad Request | Invalid input | | 401 | Unauthoriz…