Todo API with Clean Architecture (.NET)

A production-ready Todo API built with .NET following Clean Architecture principles.
This project is designed as a learning resource and real-world reference for building scalable, maintainable, and testable APIs.

Alongside the source code, I’m also publishing a https://www.youtube.com/playlist?list=PLWXMCIy8Ap7lnZ1h0Yaqnn2q4k8HExP5a where I build this project step-by-step from scratch.

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Project Goal

The objective of this repository is to demonstrate how to build a modern backend API using:

• Clean Architecture
• Domain-Driven Design principles
• SOLID principles
• Dependency Injection
• Entity Framework Core
• Repository & Patterns
• Authentication & Authorization (planned)
• Docker & Deployment (planned)

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Architecture Overview

This project follows Clean Architecture, separating responsibilities into independent layers:

src/
├── TodoApi.API              --> Presentation Layer
├── TodoApi.Application      --> Use Cases / Business Logic
├── TodoApi.Domain           --> Core Entities / Rules
├── TodoApi.Infrastructure   --> Database / External Services