2.10. HTTP Gateway Interface

• You want your WSGI server to respond to incoming requests as quickly as possible.

• Each request ties up a worker process until the response is finished.

• Moving work off those workers by spinning up asynchronous jobs as tasks in a queue is a straightforward way to improve WSGI server response times.

ASGI

Asynchronous Server Gateway Interface

Is a spiritual successor to WSGI, intended to provide a standard interface between async-capable Python web servers, frameworks, and applications.

2.10.1. ASGI

• https://asgi.readthedocs.io/en/latest/

ASGI (Asynchronous Server Gateway Interface) is a spiritual successor to WSGI, intended to provide a standard interface between async-capable Python web servers, frameworks, and applications.

Where WSGI provided a standard for synchronous Python apps, ASGI provides one for both asynchronous and synchronous apps, with a WSGI backwards-compatibility implementation and multiple servers and application frameworks.