Prometheus

Prometheus is an open-source systems monitoring and alerting toolkit. It collects and stores metrics as time series data, identifying them by a metric name and key-value pairs. It is widely used for monitoring the health and performance of servers, applications, and services.

This tool is designed for reliability engineers, system administrators, and developers who need to gain insights into their infrastructure and application performance. It provides a flexible query language (PromQL) for analyzing collected data and supports various integrations for data visualization and alerting.