I'm going over some Web Server STIGs (referenced here: https://www.stigviewer.com/stig/web_server_security_requirements_guide/) to make sure my NGINX web server is configured to comply with those security requirements. One of the requirements is that "The web server must initiate session logging upon start up." So my question is: Are there any NGINX documentation or resource that shows NGINX starts logging as soon as it's started before any requests are handled?

I assume that it does by default as each request comes in and is handled based on configurations made in nginx.conf. To get approval for the use of NGINX at my workplace, it would be a big help to be able to provide some sort of proof or resource showing what modules are up and running by the time requests are being processed. Having a brief window of a module or logging not ready once requests are being handled would be a vulnerability concern if an attacker were to flooding requests at start up.