Prometheus is an open-source monitoring system and time series database designed to collect and store metrics from your applications and infrastructure. Developers use it to track system performance, application behavior, and resource usage over time, then query that data to identify issues and understand how their systems are operating. It includes built-in support for alerting when metrics exceed defined thresholds and provides tools for visualizing and graphing collected data.

881 open issues · last updated Jul 21, 2026