Golang Weekly Issue 543: February 26, 2025

#543 — February 26, 2025

Together with

Testing Concurrent Code with testing/synctest — Concurrency is one of Go’s natural strengths, but testing heavily concurrent programs can be tricky. Go 1.24 introduces a new (though experimental and hidden behind an environment variable) package for testing code involving time or concurrency. The Go team wants you to have a play and send in your feedback.

Damien Neil

Prepare Your App for AI Agents — Stytch extends auth to handle permissions for AI agents—so your app can securely delegate access to agents or protect against agent-powered threats. Check out our Go quickstart.

Stytch sponsor

Extensible Wasm Applications with Go — “… the ability to build a WASI reactor and export Go functions to Wasm in Go 1.24 represent a significant step forward for Go’s WebAssembly capabilities. These features empower developers to create more versatile and powerful Go-based Wasm applications …”

Cherry Mui

IN BRIEF:

Go's LSP server (gopls) has a new version out that adds a modernize analyzer that can suggest ways your Go code could be updated to take advantage of new language features and standard library APIs.
Ben Boyter's Searchcode code search engine is a fantastic project and it's now powered entirely by Go and an epic 6 terabyte SQLite file.
Former core team member Brad Fitzpatrick ran into a memory leak with unique.Handle and has written up his findings.
📺 Go had its own track at the recent FOSDEM conference and you can enjoy videos of most of the talks here. Topics covered included eBPF, garbage collection, gRPC, and how Go 1.24's swiss maps implementation works. (I find the player on this site very flaky, but the 'Download' option works fine.)
🇪🇺 GopherCon Europe 2025 is.. a go! It takes place this June in Berlin.

How to Manage Tool Dependencies in Go 1.24+ — We’ve touched on the new go tool subcommand a few times before, but this is a bit more usage-focused and includes a nice tip about separating your tools into their own module file.

Alex Edwards

gno.land Offers Grants & Bounties for Building Go-Powered Decentralized Apps — App builders, Go enthusiasts, tinkerers: come and build on gno.land, a smart contract platform for a freer, fairer world.

gno.land sponsor

📄 Building RAG Systems in Go with Ent, Atlas, and pgvector Rotem Tamir (Ent)

📄 Building a BitTorrent Client from the Ground Up in Go – We linked this in 2020 but it’s been doing the rounds on social media again and is fun to revisit. Jesse Li

📺 From Strong to Weak: Weak Pointers in Go 1.24 Flo Woelki

📄 Scaling gRPC with Kubernetes and Go Noam Yadgar

📄 Practical OpenAPI in Go Alex Pliutau

🛠 Code & Tools

Minecraft From Scratch: A Simple Go Minecraft Clone — A fun project to replicate Minecraft’s infinite, procedurally-generated navigable landscapes using Go and OpenGL 4.1 (as provided via the go-gl/gl bindings – yes, cgo is required here).

Gianluca Piccirillo

nativewebp: Native WebP Image Support for Go — WebP is a modern raster graphics format commonly used on the Web and this library lets you work with it (though only its VP8L lossless form, for now) from Go without dependencies.

Hugo Smits

WAX: JSX-Based Server-Side Rendering for Go — Generate server-side HTML with TSX/JSX templates in Go.

Kita

godoc.nvim: Fuzzy Search Go's Docs from Neovim — Adds a quick way to search and browse Go documentation from within the Neovim editor.

Fredrik Averpil

GoChromecast: Discover Devices and Stream Media to Chromecast Devices — A Go-powered tool that implements the protocol used by Chromecast devices.

Vjeran

FastHTTP 1.59 – Performance-oriented alternative to net/http for specific high-volume scenarios.
Sloc Cloc and Code (scc) 3.5 – Fast and accurate code counter with complexity calculations and COCOMO calculations.
wazero 1.9 – Zero dependency WebAssembly runtime for Go. Now boasting Go 1.24 compatibility.
Revive 1.7 – Fast, configurable, extensible, flexible linter for Go.
Go-MySQL-Driver 1.9 – MySQL driver for database/sql.
graphql-go 1.6 – GraphQL server with a focus on ease of use
River 0.18 – Fast and reliable Postgres-powered background jobs for Go.
🔎 errcheck 1.9 – Checks for unchecked errors in Go code.
🤖 Gobot 2.5 – The robotics / drones / IoT framework.
🤖 Go OpenAI 1.38 – An OpenAI API wrapper library.
Go gRPC Middleware 2.3

📰 Classifieds

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Elevate Infrastructure Resiliency and Engineering Velocity with Infrastructure Identity.

📢 Elsewhere in dev

A quick roundup of some of other interesting stories in the broader landscape, in case you've missed them:

Anthropic released Claude 3.7, a new version of its popular large language model, and reports and benchmarks so far show it's really good for coding.
An interesting look at how Git's core contributors configure their own git setups.
Browser developers collaborate via a project called Interop and focus on features to bring to the Web platform each year. Interop 2025's priorities include the Storage Access API, CSS improvements, WebAssembly enhancements, and more.
The XOR operator, and logic gate, explained. (You can use bitwise XOR yourself in Go with the ^ operator.)