Uvicorn: The Lightning-Fast ASGI Server Powering Modern Python Apps

📰 Dev.to · MEROLINE LIZLENT

Learn about Uvicorn, a lightning-fast ASGI server for modern Python apps, and how to use it for building high-performance applications

intermediate Published 13 May 2026

Action Steps

Install Uvicorn using pip with the command 'pip install uvicorn'
Run a FastAPI or Starlette app using Uvicorn with the command 'uvicorn main:app --host 0.0.0.0 --port 8000'
Configure Uvicorn settings, such as workers and timeouts, to optimize app performance
Test Uvicorn with a sample app to see its performance benefits
Deploy Uvicorn to a production environment, such as a cloud platform or containerization

Who Needs to Know This

Backend developers and DevOps engineers can benefit from using Uvicorn to power their Python applications, improving performance and reliability

Key Insight

💡 Uvicorn is a high-performance ASGI server that can significantly improve the performance and reliability of modern Python applications

Key Takeaways

Learn about Uvicorn, a lightning-fast ASGI server for modern Python apps, and how to use it for building high-performance applications

If you have ever used FastAPI or Starlette, you've already heard of Uvicorn, as it is the server that...