Metric Cardinality
Metric cardinality is the number of distinct time series produced by the unique combinations of a metric's label or attribute values.
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- CatalogObservability Concepts
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- RelatedObservability Data Concepts
Definition
Metric cardinality is the number of distinct time series produced by the unique combinations of a metric's label or attribute values. It is maintained as an Observability Concept so tools can reference a stable vocabulary without treating the concept itself as a product [1].
Catalog use
This page is the canonical navigation target for the Metric Cardinality catalog value. Product profiles may declare support for the concept, but that declaration does not by itself establish implementation depth, quality, or commercial availability.
Source record
Bibliography
Grafana Labs, “Observability concepts: label cardinality.” [Online]. Available: https://grafana.com/docs/grafana-cloud/telemetry-signals/use-signals-together/key-concepts/. [Accessed: Aug. 20, 2026].
Known limits
Unresolved unknowns
- Implementations and product coverage vary; this page defines catalog scope rather than certifying a product capability.
Public review
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