AWS CloudTrail captures and records AWS account activity, including errors and login reporting, giving you improved oversight for your entire AWS implementation. It provides a rich set of tools to look over all of your connected AWS services and check on account history, console logins, and error reporting at a wide level, making it particularly useful if you utilize a lot of AWS services.
Requests per second
How much traffic is your web server handling? This metric shows you how many requests are being handled by NGINX.
Each client will create a new TCP connection and send an HTTP(s) request. This metric measures the amount of TCP connections that are currently active.
Keep an eye on this metric to see when NGINX is unable to handle incoming connections—this can happen when the server is overloaded.