Changing metrics

[youknowriad]

Over time, we might find out that a metric is not computing the right thing or that we want to change slightly how it's computed. In general when such changes happen, reading and understanding the graphs becomes harder.

To address this there are two options:

• Deprecate the old metric and create a new one (new key, label) and lose any connection to the previous metric.
• Mark somehow in the graph the change in the formula, so that everyone reading the graph can understand it easily.

Both of these approaches can have value depending on the change in the metric itself.