P50, P95 and P99: percentiles and the latency your average hides

Understand P50, P90, P95 and P99, find the slowness your average hides, and learn to measure latency, aggregate histograms and set targets for your API.

Ednaldo Luiz•September 30, 2026

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P50, P95 and P99: percentiles and the latency your average hides

Latest posts

Design Docs: how to decide before the code without creating bureaucracy

Architecture Decision Records (ADR): record decisions without creating bureaucracy

Requirements Engineering: from vague request to verifiable requirement

Anti-Corruption Layer: isolate your application from external models

How to estimate storage growth with writes, replication, and retention

Solutions Architecture: what it is, where it acts, and why it creates confusion

Get practical architecture & system design content

P50, P95 and P99: percentiles and the latency your average hides

Latest posts

Design Docs: how to decide before the code without creating bureaucracy

Architecture Decision Records (ADR): record decisions without creating bureaucracy

Requirements Engineering: from vague request to verifiable requirement

Anti-Corruption Layer: isolate your application from external models

How to estimate storage growth with writes, replication, and retention

Solutions Architecture: what it is, where it acts, and why it creates confusion

Get practical architecture & system design content

Recommended posts

Solutions Architecture: what it is, where it acts, and why it creates confusion

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Solutions Architecture: what it is, where it acts, and why it creates confusion