Prometheus

Definitions

1. An open-source systems monitoring and alerting toolkit, originally built at SoundCloud. Uses a pull-based model to scrape metrics endpoints, stores time-series data, and provides PromQL for querying. Paired with Grafana for dashboards, it is the monitoring stack of the cloud-native era.

   In plain English: A free tool that watches your servers and applications, collecting performance numbers over time and alerting you when something goes wrong.

   Example: "Prometheus scraped the /metrics endpoint every 15 seconds and Grafana turned it into a dashboard that made the outage obvious."

Related Terms

• Code Coverage
• Time-Series Database
• OpenTelemetry
• Canary Analysis
• RED Method
• Golden Signals
• Jaeger
• Metrics Collection
• Pulse
• Tracing
• Prometheus Alertmanager
• Sentry
• Netdata
• BPF Security
• Cloud Monitoring
• Dashboard Culture