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Uvicorn is a fast and lightweight ASGI server designed for running modern asynchronous Python web applications. Built on uvloop and httptools, it is optimized for high performance and low latency, making it an excellent choice for applications using FastAPI, Starlette, or Django Channels. Uvicorn fully supports WebSockets, HTTP/2, and long-lived connections, allowing developers to build real-time, event-driven applications efficiently. Due to its asynchronous-first approach, Uvicorn is significantly faster than traditional WSGI servers like Gunicorn, especially for handling concurrent connections.
Uvicorn is often used in combination with Gunicorn to provide multi-process capabilities, improving scalability for production environments. It is easy to configure, integrates well with reverse proxies like NGINX, and is widely adopted in microservices and cloud-based deployments. With its focus on speed, efficiency, and modern web standards, Uvicorn has become a go-to server for developers working with async Python frameworks.
Visit the website: https://www.uvicorn.org/
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