// Hacker Noon · 8 March 2026

Go 1.21: A Guide to Profile Guided Optimization

Go 1.20 shipped a preview of profile-guided optimization (PGO) for users to test. After addressing known limitations in the preview, and with additional refinements, PGO support in Go 1.21 is ready for general production use.

Hacker Noon

@hacker-noon · Go [Technical Documentation]

hackernoon.com

Hacker Noon@hacker-noon