fastapi-best-practices

FastAPI async routing requires using `async def` for I/O operations and standard `def` for blocking tasks. This prevents blocking the event loop and ensures route handlers maintain high concurrency performance.

FastAPI dependency injection best practices involve chaining dependencies for validation and caching. Using these conventions ensures route handlers remain decoupled, testable, and maintainable across complex application flows.

FastAPI Pydantic integration uses custom base models and settings management for schema design. This enforces strict data validation, type coercion, and centralized application configuration throughout the web service.

FastAPI database patterns favor SQL-first approaches and migrations, paired with async testing. These conventions ensure data integrity and reliable test coverage for production web services without blocking the event loop.

Yes, you can use these FastAPI conventions to refactor existing route handlers. The guidelines apply to both development and code review tasks, ensuring async routing and dependency injection meet production quality standards.