The quantity of instances deployed default is 2, the minimum of instances
required is 1, as you can confirm in this link[1]. However, maybe only 1
instance it will not be enough for ~5 users. It seems that by setting 2
instances, could help you to solve this issue. You can retrieve more logs
I don't think we experienced a peak, I only see the requests of less than 5
users (it was during the night, we usually don't have a lot of users at
this time).
One component I forgot in this stack is a Nginx instance that takes the
role of a gateway using the reverse proxy feature.
The request
The "failed_to_connect_to_backend" is similar to "failed_to_pick_backend"
response and this often occurs when the load balancer knows where it wants
to send traffic but cannot successfully route its request or find a healthy
or available instance. Reviewing the instance usage and health checks
