Prometheus
Prometheus.io is an open-source monitoring and alerting toolkit designed for collecting and analyzing time-series data from applications, infrastructure, and services. It operates using a pull-based model to scrape metrics from configured targets, storing them locally and enabling powerful querying through its PromQL language. The purpose of Prometheus is to provide reliable, scalable observability for dynamic environments especially cloud-native systems by offering real-time insights, automated alerts, and seamless integration with visualization tools like Grafana