How to horizontally scale ODK Aggregate

Hi Yaw, Can you please confirm if there is a way to horizontally scale up ODK Aggregate. I have tried multiple ways but ODK Aggregate does not seem to work behind the Load Balancer when more than one instances are running at the same time.

ODK right now is working fine without any issues, but I am worried that in case ever the traffic increases then I would not be able to horizontally scale it up.