# Prometheus

> Time-series metrics for cloud-native

**Category:** Observability  
**Pricing:** open-source  
**URL:** https://prometheus.io  
**GitHub:** https://github.com/prometheus/prometheus  
**Added:** 2026-08-19

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## The Hook

Prometheus is how you collect metrics at scale.

## What's Good

Pull-based collection simplifies service discovery. PromQL enables powerful queries. The exporters ecosystem covers everything. CNCF graduated project means long-term support.

## The Catch

Single-node storage limits scale. PromQL has a learning curve. High cardinality labels cause problems.

## Verdict

The foundation of cloud-native metrics.