Understanding the Prometheus data model

To understand the Prometheus data model, we need to go through what makes a time series and the storage of such data. These concepts will be invaluable throughout this book.

Time series data

Time series data can usually be defined as a sequence of numerical data points that are indexed chronologically from the same source. In the scope of Prometheus, these data points are collected at a fixed time interval. As such, this kind of data, when represented in graphical form, will most commonly plot the evolution of the data through time, with the x axis being time and the y axis being the data value.

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