In this chapter, we discussed several approaches to finding performance problems in your Nginx installation. We mostly focused on working with legacy websites that you might have inherited and are optimizing. The reason for this is that Nginx in itself rarely has any specific problems with being fast enough.

As an operations specialist, you increased your value for the business by gaining knowledge on how to speed up existing working websites having load and customers but based on some pre-Nginx technologies that were a limiting factor.