If you work with monitoring or monitoring tools much, you’ve probably seen the phrase “correlating” here and there. For example, monitoring vendors often say you can use their product to correlate metrics. Issue 157 in the popular Prometheus monitoring system’s GitHub repository is to add support to correlate multiple metrics in the same graph.
I’ve noticed that when monitoring-related discussions mention correlation, the meaning is usually pretty vague. It often seems to refer to just graphing multiple things on a single chart with the same timescale.
In this post, we’ll explore some powerful visualizations that are vital to monitoring, and we’ll take a look at a few of the attributes that make them so effective—specifically, color schemes. Colors are a central element for many effective visual tools, and whether colors are used to communicate information more clearly; to emphasize certain nuances of data; or to achieve an aesthetic or emotional response, they are a major part of a visual’s impact. To keep things simple, this blog post will focus our examination on metrics that show us how work is distributed.