Instrumentation and telemetry

A monitoring solution is dependent upon instrumentation and telemetry. So it is natural that when we speak about monitoring microservices, we also discuss instrumentation and telemetry data. Logs are nothing but an instrumentation mechanism.

Instrumentation

Now let's see what is instrumentation. Instrumentation is one of the ways through which you can add diagnostic features to applications. It can be formally defined like this:

Most applications will include diagnostic features that generate custom monitoring and debugging information, especially when an error occurs. This is referred to as instrumentation and is usually implemented by adding event and error handling code to the application. -MSDN

Under normal...