A Guide to Optimizing for High Performance in Go — An in-progress collection of technical articles aimed at helping Go developers write faster, more efficient apps. The initial focus is on common patterns like object pooling, struct field alignment, and using worker pools, with a guide to high-performance networking set to follow soon.

Alexander Stavonin

Goodbye Core Types, Hello Go As We Know and Love It — A look at Go’s evolving type system, revealing how the abstraction of core types (introduced with generics in Go 1.18) complicated otherwise straightforward language features, and how their removal in Go 1.25 is set to simplify both the spec and everyday coding. (Hacker News reactions here.)

Robert Griesemer (Go Core Team)

2X-40X Faster Docker Builds with Blacksmith — With a one-line code change, Blacksmith can make your Docker builds incremental by mounting your Docker layer cache into your GitHub Actions runner. Blacksmith is used by 300+ companies like Ashby, Clerk, and Mintlify.

Blacksmith sponsor

When is it OK to Panic in Go? — One of the Go proverbs is “Don’t panic,” which isn’t just good life advice but also saying not to use panic for normal error handling. Alex explores panic and some times when you should use it.

Alex Edwards

The First Newsletter Dedicated to Product Engineers — Learn strategies and tactics you need to succeed as a product engineer (and build products users love).

PostHog sponsor

Introducing ls-lint: A File Structure Linter — Billing itself as an ‘extremely fast file and directory name linter’, ls-lint is a Go powered tool for enforcing some structure over a project’s filesystem and naming policies. GitHub repo.

Lucas Löffel

urfave/cli 3.1: A Declarative Way to Build Go CLI Apps — The manual outlines all of the key features, but think shell auto-completion, option parsing, help text, etc.

Jeremy Saenz and Contributors

Revive 1.8: A Faster, Configurable, Flexible Linter for Go — A drop-in replacement of golint that aims to provide a little more structure, configurability, and performance. It’s used by numerous large Go projects and libraries. The README on the GitHub repo explains how it differs to golint.

Minko Gechev

asciigraph: ASCII Line Graph Rendering Library — A longstanding library for rendering basic line graphs in ASCII text, such as at the terminal, all with no dependencies.

Rohit Gupta