How does this skill handle database interactions?

It utilizes the Repository Pattern within the Infrastructure layer, defining abstract interfaces in the Domain layer so that the business logic never directly depends on ORMs like SQLAlchemy or Tortoise.

Is this skill suitable for small projects?

While it adds some initial boilerplate, it is highly recommended for any project expected to grow in complexity, as it prevents the 'spaghetti code' often found in smaller FastAPI prototypes.

Does it include testing strategies?

Yes, the architecture is designed specifically for testability, allowing for isolated unit tests for domain logic and integration tests for the API and Infrastructure layers.

What are the benefits of using Clean Architecture with FastAPI?

It separates business logic from technical implementation, making the application easier to test, maintain, and migrate between different databases or frameworks without affecting core functionality.

FastAPI Clean Architecture

Name: FastAPI Clean Architecture
Author: rafaelkamimura

byrafaelkamimura

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API Development

Builds maintainable and scalable Python backends using Clean Architecture principles and FastAPI.

About

This skill provides a comprehensive framework for developing robust FastAPI applications by enforcing a strict three-layer separation of concerns: Domain, Infrastructure, and API layers. It guides users through implementing the repository pattern, dependency injection, and framework-agnostic business logic, ensuring that core service functionality remains decoupled from external dependencies like databases or web frameworks. Based on production patterns from enterprise financial systems, it is the ideal choice for developers looking to implement Domain-Driven Design (DDD) and ensure high testability in their Python microservices.

Key Features

Strict three-layer architecture (API, Domain, Infrastructure)
Dependency Injection container configuration for Python
Repository and Service interface patterns for maximum decoupling
4 GitHub stars
Standardized project structure for enterprise-grade scalability
Pure domain entity modeling with encapsulated business rules

Use Cases

Bootstrapping new enterprise FastAPI projects with modular structure
Refactoring existing FastAPI services to improve maintainability and testability
Implementing complex business logic using Domain-Driven Design principles

About

Key Features

Strict three-layer architecture (API, Domain, Infrastructure)
Dependency Injection container configuration for Python
Repository and Service interface patterns for maximum decoupling
4 GitHub stars
Standardized project structure for enterprise-grade scalability
Pure domain entity modeling with encapsulated business rules

Use Cases

Bootstrapping new enterprise FastAPI projects with modular structure
Refactoring existing FastAPI services to improve maintainability and testability
Implementing complex business logic using Domain-Driven Design principles