We are going to deploy an odoo 11 application which will in worst case scenario may face upto 2500 concurrent user and need to send SOAP request to remote web service and retrieve the response & store it in db.

Can someone please give me some suggestion or good documentation/blog on how to scale an odoo 11 server (single/multiple) and postgresql to get such result.

Actually, I need some expert opinion for resource calculation and deployment strategy.

Thanks in advance.