What is uvicorn?

Uvicorn is a lightning-fast ASGI server implementation, using uvloop and httptools. It is designed to be used in Python web applications, providing a high-performance server that can handle concurrent connections efficiently.

Uvicorn is built on top of uvloop, an ultra-fast event loop that is built on top of libuv. This allows it to take advantage of high performance and low-level networking capabilities for handling web requests.

ASGI stands for Asynchronous Server Gateway Interface, which is a specification that allows Python web applications to handle asynchronous communication. Uvicorn implements this specification, providing a way for Python developers to build high-performance web applications that can handle a large number of concurrent connections.

Uvicorn is commonly used with frameworks like FastAPI and Starlette, which are built on top of ASGI. By using uvicorn as the server, developers can take advantage of its speed and efficiency to power their web applications.

In conclusion, uvicorn is a powerful ASGI server implementation that is used in Python web applications to provide high-performance and efficient handling of web requests. It is a valuable tool for developers working on web applications that require high concurrency and speed.