About Concurrent Connections

The number of concurrent connections typically depends on a number of CPUs and Gunicorn workers.

The formula many use is:

1

number_of_workers = (2 × number_of_CPU_cores) + 1

For a typical small to medium Django site using Gunicorn:

• 2-4 workers is common for smaller sites.
• Each worker can handle around 2-12 concurrent connections.
• So approximately 4-48 concurrent connections total.

For medium to larger sites:

• 4-12 workers is typical.
• Which allows for roughly 8-144 concurrent connections.

If you use Whitenoise and serve static files via Gunicorn too, you should take into account that each static file will block the connections for other users.