In Prometheus, there are two basic data types and two compound types used to represent metrics.

The two basic types are gauges and counters, and the two compound types are histograms and summaries.

In the following lectures we'll be looking at what each of these types are, when to use them, how they compare to one another, and multiple examples of each.

Following this we shall also be introducing labelling, as well as looking deeper into the metric types in regards to their underlying types in Prometheus itself, and also why they're designed that way.