Prometheus
Turning PostgreSQL CSV Logs into Durable Metrics
Read complete CSV records, persist cursors and aggregates, and publish bounded PostgreSQL log metrics
Caching pgBackRest Metrics Outside the Scrape Path
Run pgBackRest in a bounded background worker and serve the latest valid metrics snapshot
One Endpoint, Several Sources: The Composite Exporter Contract
Combine PostgreSQL and optional metric sources with fixed ownership and independent failure handling
Snapshot Histograms Are Gauges, Not Counters
Why SQL snapshot distributions expose bucket, count, and sum as Gauge series