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Embedded TSDB Metrics Catalog

The TSDB sampler records all metric families exposed by the built-in Prometheus registry.

Family Coverage

  • Counter
  • Gauge
  • Summary
  • Histogram
  • Info
  • Untyped

Stored Series Conventions

  • Counter/Gauge/Untyped/Info: stored as metric name exactly as exposed.
  • Summary:
    • quantiles in <metric> with quantile label
    • <metric>_sum
    • <metric>_count
  • Histogram:
    • buckets in <metric>_bucket with le label
    • <metric>_sum
    • <metric>_count

Because the source registry can evolve, there is no fixed hardcoded metric list in TSDB code.