grafana/docs/sources/shared/alerts/note-dynamic-labels.md

labels	title
products oss	Note Dynamic labels

{{% admonition type="note" %}}

An alert instance is uniquely identified by its set of labels.

• Avoid displaying query values in labels, as this can create numerous alert instances—one for each distinct label set. Instead, use annotations for query values.
• If a templated label's value changes, it maps to a different alert instance, and the previous instance transitions to the No data state when its label value is no longer present. {{% /admonition %}}