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Prometheus - Complete Guide | Technical Documentation

Discover the fundamentals of Prometheus, an open-source system designed for robust monitoring and alerting in modern applications.

mysimulator teamUpdated June 2026≈ 3 min read▶ Open the simulation

Prometheus - Complete Guide

This comprehensive guide to Prometheus covers everything from basic monitoring concepts to advanced techniques for collecting metrics and setting up alerts.

Prometheus is an open-source monitoring and alerting system with a time series database. It collects metrics from instrumented applications using a pull model, stores them efficiently, and provides a powerful query language called PromQL for analysis.

Avoid Excessive Cardinality

PromQL (Prometheus Query Language)

This is the language used to analyze metrics within Prometheus.

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Alert Processing:

Grouping: Grouping similar alerts together allows for more targeted responses.

Inhibition: Suppressing less important alerts prevents notification overload and ensures critical issues are prioritized.

Frequently asked questions

Should you use appropriate metric types?

Should you use appropriate metric types

Should you add useful labels?

Should you add useful labels

Should you avoid high cardinality?

Should you avoid high cardinality

Should you use naming conventions?

Should you use naming conventions

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