Le crux :

retries 3
option redispatch 1
retry-on conn-failure empty-response response-timeout 502 503 504

option redispatch 1 means every retry goes to a different backend. Not the same dying server. A different, healthy one.

Traefik is an open-source Edge Router that makes publishing your services a fun and easy experience.
It receives requests on behalf of your system and finds out which components are responsible for handling them.

Quelques options pour faire tourner gunicorn dans un container docker.