Gunicorn worker timeout error

Question

I have setup gunicorn with 3 workers 30 worker connections and using eventlet worker class. It is setup behind Nginx. After every few requests, I see this in the logs.

Answer 1

Is this endpoint taking too many time?

Maybe you are using flask without assynchronous support, so every request will block the call. To create async support without make difficult, add the gevent worker.

With gevent, a new call will spawn a new thread, and you app will be able to receive more requests

pip install gevent
gunicon .... --worker-class gevent