One similar problem I encountered was that target groups have a setting for health checks, and the load balancer will access the health check route from time to time.

If your laravel's SESSION_DRIVER env is set to database, then your db's sessions table would accumulate with those health check sessions.

I'm not sure if the connection will remain for the ELB request, but I still think it might be worth looking into it. Here's a neat implementation to ignore bots' session being stored into the database with the following implementation.

https://stackoverflow.com/a/49310249/10849089

Laravel 11 has a health check route by default as mentioned here.