<ul><li>Prometheus is an open-source monitoring solution that helps track performance, health, and availability in today's dynamic and distributed environments.</li><li>Before Prometheus, traditional monitoring tools had limitations such as lack of support for high-cardinality data, difficulties in scaling in dynamic environments, and limited alerting capabilities.</li><li>Prometheus uses a multi-dimensional data model with labels for filtering and grouping, and it has a powerful query language called PromQL for filtering, aggregating data, and generating alerts.</li><li>Prometheus has a simple and reliable architecture with a standalone setup, a pull model for collecting metrics, and its own time-series database for storage, making it a comprehensive solution for monitoring modern systems.</li></ul>

Understanding Prometheus: A Beginner’s Guide to Modern Monitoring and Alerting

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