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Java One
Java One
Sep 21, 2025 · Operations

Mastering Prometheus rate, irate, and increase: When and How to Use Each

This article explains how Prometheus’s rate, irate, and increase functions calculate counter growth rates, handle counter resets, and differ in smoothing and responsiveness, guiding you to choose the appropriate function for monitoring request rates, CPU usage, and other metrics.

MetricsMonitoringPrometheus
0 likes · 7 min read
Mastering Prometheus rate, irate, and increase: When and How to Use Each
Tencent Cloud Developer
Tencent Cloud Developer
May 21, 2024 · Operations

Why Prometheus Metrics Aren’t 100% Accurate – The Hidden Trade‑offs Explained

The article analyzes why Prometheus sometimes returns inaccurate metric values, revealing the design trade‑offs that favor efficiency over precision, and walks through common pitfalls in rate/increase calculations, histogram P99 estimation, and practical recommendations for choosing scrape intervals and query windows.

HistogramMetricsMonitoring
0 likes · 20 min read
Why Prometheus Metrics Aren’t 100% Accurate – The Hidden Trade‑offs Explained