Usage metrics

You will hear the term usage repeatedly when it comes to metrics. This is because there are various dimensions of usage metrics. In terms of infrastructure, you are measuring the usage of the resources of your API infrastructure. When we talk about usage as part of product metrics in Chapter 11, we will dive into the consumer experience and usage in terms of the product.

In the following screenshot, you can see the seven key infrastructure metrics that you must track across all your APIs:

Figure 10.5 – Key API infrastructure usage metrics

In the following sections, you will learn in-depth about these seven key infrastructure usage metrics.

Requests Per Minute (RPM)

The RPM metric is a standard metric for gauging the application manager’s performance. Since the server doesn’t account for the latency caused by input and output (I/O) processes, it acts as a ceiling for an application’s interface.

RPM is commonly...