fastapi-patterns

Structure a FastAPI project for production by implementing clean architecture with dedicated layers for services, schemas, and routers. This separates business logic from routing and database concerns, ensuring maintainability and scalability.

Separate business logic from routing in FastAPI by using transactional service layers and dependency injection. This pattern isolates core logic from request handling, making the application modular and testable.

Set up async database operations in FastAPI with SQLAlchemy by configuring asynchronous database interactions within a structured service layer. This approach facilitates high-performance, non-blocking web services.

This FastAPI architecture pattern supports Pydantic v2 validation by integrating robust schemas. It ensures type safety and efficient request data validation before processing business logic.

You can use this FastAPI architecture to refactor an existing monolithic application into a modular, testable system. It provides standardized patterns for dependency injection and transactional services to ease migration.

Implement JWT authentication in a FastAPI service layer by applying production patterns that integrate security directly into the architecture. This secures endpoints while maintaining clean separation of concerns.