2 posts tagged with "Performance"

A recent GitHub issue #6751 in the Caddy server repository revealed a counterintuitive performance bottleneck: despite maintaining low CPU usage (1-5%), a multi-layer reverse proxy setup experienced severe throughput degradation. This investigation uncovered a critical lesson—low CPU usage doesn't guarantee performance. The culprit? Network stack overhead hiding beneath the surface. Here's what was discovered and how it was resolved.

The 1 Billion Row Challenge (1BRC) is a programming challenge focused on processing a large dataset of temperature measurements. If you're unfamiliar with it, you can learn more from these resources: 1 and 2.

This is a cheatsheet of optimisations done for 1brc challenges. It tries to summarise and put the optimisations in perspective.