Golang Weekly

An interactive tour of Go 1.27

Fri, 7 Aug 2026 00:00:00 +0000

#613 — August 7, 2026

Go Weekly

An Interactive Tour of Go 1.27 — Anton Zhiyanov made interactive tours for Go 1.22 through 1.26 but decided to stop. Jesús Espino has picked up the baton and tackles Go 1.27's huge array of features here, from generic methods and the goroutineleak profile to the new uuid package and experimental portable SIMD.

Jesús Espino

💡 No, Go 1.27 has not been released yet, but the second release candidate is solid, and the final is expected in the next week or two.

Harness Engineering: How to Wrangle Your Agents — The models keep changing. The harness is the part you build. Scott Moss (Netflix) shows how: durable execution, sandboxed tool calls, memory systems, and multi-agent handoffs.

Master.dev sponsor

A Proposal to Fix Go's Proposal Backlog — The backlog is growing 23% a year with the median item over two years old. Austin Clements proposes a formal triage group, review tracks, and weighted community emoji voting to decide what gets reviewed next (though not what gets accepted).

The Go Team

Going Backward (or Why slices.Backward Looks So Complicated) — slices.Backward's signature is intimidating at first glance, so Anton reinvents it step-by-step, from a naive slice copy to callback iterators, iter.Seq2, and the ~[]E constraint. Then, fingers crossed… it clicks?

Anton Zhiyanov

Adding Go's defer to the TypeScript Compiler — Since tsc is now written in Go, hacking on it is unusually friendly territory for a Gopher. Andrew adds a working defer statement to the compiler, but concludes it probably shouldn't exist.

Andrew Healey

You Chose Go to Avoid Complexity. So Just Extend Postgres — TimescaleDB adds analytics to the Postgres you run. One system, no pipeline, no drift. Get $1000 credit to start.

Tiger Data (creators of TimescaleDB) sponsor

📄 Looking at the Memory Map of a Go 1.27 Program on Linux – Go 1.25+ names its memory mappings, making /proc/<pid>/maps readable. Chris Siebenmann

🛠 Code & Tools

Wails v3 Beta: A New Foundation for Go Desktop Apps — The Go desktop framework's long-awaited rewrite lands in beta with explicit app and window APIs, first-class multi-window support, Go services with TypeScript bindings generated via static analysis, and experimental iOS and Android support. Note that migrating from v2 will require real work.

Lea Anthony

Wireblast: A 100Gbps Packet Generator in Go — A Go app that uses AF_XDP to hit 14.88 million packets per second on 10G (and 138 Mpps on 100G) with no DPDK or hugepages needed. Where iperf3 tops out, this is just getting started! GitHub repo.

Andree Toonk

🤖 Fantasy 0.40 – Charm's library for building multi-provider, multi-model AI agents with a single API.
📡 GopherTrunk 0.9 – Pure-Go digital-trunking radio scanner engine for RTL-SDR.
GoProxy 1.9 – Create customized HTTP/HTTPS proxy servers with Go.
slacrawl 0.8 – Mirrors Slack workspace data into local SQLite.
pdfcpu 0.14 – Go PDF processing and manipulation library.
Delve 1.27.1 – The popular Go debugger.

🎉 There's a party goin' on right here…

JetBrains is holding an online release party for Go 1.27 on August 25.

Ainsley Clark and Jesús Espino (who created the Go 1.27 tour at the top of this issue) are hosting, and some of the team behind the Go 1.27 release will be taking part! Robert Griesemer, Alan Donovan, Marc Dougherty, Cameron Balahan, and Joe Tsai will be sharing some background about the release and answering viewers' questions live.

I take it this means Go 1.27 will definitely be out by the 25th then… 😅

A plan to bring generic collections to Go 1.28

Fri, 31 Jul 2026 00:00:00 +0000

#612 — July 31, 2026

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Go Weekly

Go's Proposals for Generic Collection Types in Go 1.28 — An umbrella proposal from Go's Collections working group covering several collection data structures intended for the eventual Go 1.28 standard library. Includes a canonical set.Set type, hash-based maps and sets with custom hashers, an ordered map, and a new generic binary heap.

Alan Donovan (Go Team)

Top Open-Source Code Reviewer on Code-Review-Bench — pr-af, AgentField's open-source reviewer, just outranked leading closed models — #2 of 42 on Code-Review-Bench. Multi-agent PR review with ~3× more valid findings than closed tools at ~10× lower cost. Self-hosted, drops into GitHub Actions.

Agentfield.ai sponsor

Watching Go's New Garbage Collector Move Through the Heap — Green Tea became the default GC in Go 1.26, and Phil goes looking with perf and an ASCII map of the heap. Go lays objects out in size-segregated spans and never moves them, which can mean freeing 90% of your objects frees almost no memory.

Phil Eaton

IN BRIEF:

All being well, Go 1.27 is expected to land in the next couple of weeks, but the draft Go 1.27 release notes have been fleshed out some more if you want to get ahead of it.
go vet is now set to flag formatting pointers with %d in printf.
Eitam Ring teases KinetiGo, a TinyGo-based toolchain for working with LEGO robotics devices.
Stacked pull requests are now in public preview on GitHub.

Supervised Fire-and-Forget Tasks in Go — How to run 'fire and forget' tasks with bounded concurrency, panic recovery, and graceful shutdown, instead of bare go func() calls.

Redowan Delowar

Adding Go to a Browser Code Runner — A look at adding Go to a browser code runner, why the usual GOOS=js approach didn't work in a V8 isolate, and how compiling the Yaegi interpreter to WASI got it working cleanly.

Ata Kuyumcu

pgx.CollectRows or Why Nice APIs Don't Have To Be Slow — pgx's CollectRows and RowToStructByName helpers were much slower than handwritten loops. The author got caching fixes into pgx 5.6 (released in 2024) and shows how a rethought abstraction closes the gap almost entirely.

zolstein

A Second Database Is a Dependency You Can Skip — TimescaleDB extends Postgres for analytics at scale, no new service to run. Get $1000 credit to start.

Tiger Data (creators of TimescaleDB) sponsor

📄 Wrapping Errors with Defer – A small pattern combining defer with a named error result to avoid repetition while still adding context to errors. Roxy Light

📄 Go's Maps: How Swiss Tables Replaced the Old Bucket Design Gabor Koos

🛠 Code & Tools

Gore 0.7: A Full-Featured Go REPL Environment — Has all the niceties you'd expect like line editing, history, multi-line input, expression evaluation, the ability to import packages (and, in v0.7, you can create import aliases too) and gopls-powered code completion.

motemen

Goph 2.0: A Native Go SSH Client Library — Supports connections using passwords, private keys, keys with passphrases, doing file transfers, etc. v2 brings a functional options API, context-aware commands, SOCKS5 proxy, jump hosts, and more.

Mohamed El Bahja

🖼️ webp-go-pure: Pure Go WebP Encoding and Decoding — A pure Go WebP encoder/decoder for when you want to avoid cgo and libwebp.

Kaan Barmore-Genc

soup 2.0: A Beautiful Soup-Inspired Web Scraper — Takes inspiration from Python's popular Beautiful Soup and provides functions for loading and parsing pages and then navigating or reading the elements on them.

Anas Khan

Wish 2.0.2 – Charm's SSH server framework for building terminal-accessible apps. v2.0.2 fixes a bug with apps running under bubbletea.Middleware.
jsonparser 1.6 – Fast JSON parser offering path-based access without predefined structs and minimal allocations.
Milvus 3.0 – Go-powered cloud-native vector database built for vector ANN search. (Repo.)
req 3.60 – Simple, powerful HTTP client library with advanced features.

Go can't kill a stuck goroutine

Fri, 24 Jul 2026 00:00:00 +0000

#611 — July 24, 2026

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Go Weekly

GoMLX: Accelerated Machine Learning Framework for Go — A Python-free, idiomatically Go alternative to TensorFlow or PyTorch. It's come a long way since we linked to it last, with more SIMD support, a new homepage, thorough docs, and support for more Hugging Face models out of the box.

Jan Pfeifer and Contributors

💡 The new docs include a guide to training your own Convolutional Neural Network (CNN) with it to classify the MNIST digits.

Build Production-Ready CI/CD Pipelines with GitHub Actions — Erik Reinert takes you from your first workflow to production pipelines: matrix builds, caching, composite actions, reusable workflows, and secure cloud deploys with OIDC.

Master.dev sponsor

Storing Passkeys Like Password Hashes, and a Go API to Match — A proposal for storing WebAuthn credentials as opaque strings, a la password hashes, plus a draft stateless crypto/passkey API that could reach the standard library in Go 1.28. Filippo wants feedback on both now.

Filippo Valsorda

Go's Stuck Goroutine Problem (And Why to Let It Fail) — How goroutines get stuck, why Go can't kill them, and River v0.40's Erlang-inspired 'let it crash' answer for background jobs that ignore cancellation.

Brandur Leach

Escape Analysis in Go: Stack vs. Heap Allocations Explained — An approachable intro to Go's escape analysis and reading -gcflags="-m" output that doubles as a demo of GoLand 2026.2's new tooling for it.

Dominika Stankiewicz (JetBrains)

Building a Metrics Backend? Keep It in Postgres — TimescaleDB extends Postgres to ingest and query metrics at scale. One database, not two. Get $1000 credit to start.

Tiger Data (creators of TimescaleDB) sponsor

📄 Building a pkg.go.dev TUI Explorer – A written alternative to ▶️ Alex's video on the same build. Alex Pliutau

📄 Memory Profiling and Optimization in Go: How One Line Allocated 687GB – An accidentally quadratic slice prepend that was caught by the allocation profiler. Solomon Oladiran

📄 Everyone Should Know SIMD – More relevant now as Go continues to add support. Mitchell Hashimoto

🛠 Code & Tools

httpretty 0.2: Pretty-Print HTTP Requests Made from Go — Inspired by curl's --verbose, this could be handy when debugging. We first linked this 7 years ago(!) and it's been rounded out with support for multipart bodies, HTTP trailers, and http.Flusher/http.ResponseController.

Henrique Vicente

oapi-codegen 2.8.0: Now with OpenAPI 3.1 Support — A long-standing way to generate idiomatic Go client and server boilerplate code from OpenAPI 3 specifications, and now OpenAPI 3.1 too. Specs are now validated prior to generation too, Fiber v3 is supported, and Go 1.25+ is now required.

Jamie Tanna and Contributors

go-diskfs: Manipulate Disks and Disk Images from Go — For tasks that you might otherwise use fdisk, mkfs.vfat, or mtools for – partitioning, making filesystems, etc.

Avi Deitcher

🤖 Crush 0.86.0 – Charm's Go-powered CLI agentic development tool adds new LSP tools for better refactoring.
iso8601 1.8 – Fast ISO8601 date parsing library. v1.8 adds support for ordinal dates (e.g. 2026-205 which is today).
Agent Development Kit (ADK) for Go 2.1 – Google's toolkit for building agents.
do 2.1 – Dependency injection toolkit built on generics.
go-ora 3.0 – Pure Go Oracle Database client library.
Ergo 2.19 – Modern Go-powered IRCv3 daemon.
go-pinecone 6.0 – Official Go SDK for Pinecone.

📰 Classifieds

Scala on Go: sealed types, exhaustive matching, Option/Try & new bind/also do-notation — compiled to plain Go. Try it: gala.fyi.

🤖 If you can code, you can build a robot. Viam 101 is a free 90-min course — no hardware needed. Sign up by July 31 to win a $3,500 arm.

📢 Elsewhere in the ecosystem

Shirei is a cross-platform Go immediate-mode GUI framework that now has early support for generating iOS and Android apps from the same codebase.
Anton Zhiyanov's Solod, an attempt to create a 'better C' based on a subset of Go, now supports networking in v0.2.
🤖 In How I Stopped Running Out of Tokens, a developer whose company uses Claude Enterprise shares some tools you can use (like rtk) to get the most out of your assigned limits.
Metago is an experimental template-based metaprogramming approach to writing templates that write Go.
OctoGo is a Go-like language for the Parallax Propeller 2 microcontroller with the unusual property that goroutines are not scheduled, they take over a CPU core each.
/r/golang discussed why is Cgo so bad? (Or not!)

Compile-time OpenTelemetry instrumentation for Go

Fri, 17 Jul 2026 00:00:00 +0000

#610 — July 17, 2026

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Go Weekly

How I Use HTMX to Build Go Webapps — A practical walkthrough of using htmx (think AJAX-style updates driven by HTML attributes) with Go. Opinionated, super Go-specific, and honest about the tricky bits. A good starter on building server-rendered interfaces with incremental interactivity.

Alex Edwards

One Postgres for Your App and Your Metrics — TimescaleDB extends the Postgres you already run so high-volume metrics and events stay queryable at scale. Hypertables, up to 95% compression, continuous aggregates. One database to operate, not two. Get $1000 credit to start.

Tiger Data (creators of TimescaleDB) sponsor

Compile-Time OpenTelemetry Instrumentation for Go — No more hand-written instrumentation or eBPF agents needed, as OpenTelemetry's compile-time instrumentation for Go is now stable. It uses -toolexec to inject telemetry automatically, but v1's library coverage has some limits worth noting.

Kemal Akkoyun (OpenTelemetry)

IN BRIEF:

14 years ago Rob Pike proposed removing string(int) – there's an update! It's a likely decline but comments are open. The more recent conditional expression proposal is also looking likely to suffer a similar fate.
go fmt and go doc are set to no longer rewrite straight quotes into 'smart' quotes inside comments.
🕹️ Luigi Vanacore has released Beginning Game Programming with Go, a (paid) book about building a complete game using Ebitengine. The code is open source, though, and on GitHub.
Reddit's /r/golang discussed the situation where passing structs by value is faster than passing pointers.
url.MustParse has been accepted.

My Thoughts on the Future of Go in the AI Era — Akin to Steve Francia's recent piece, Alex argues that "AI might actually make boring languages more valuable, not less."

Alex Pliutau

📄 Eliminating Go Bounds Checks with unsafe – For optimization purposes. Andrii Berezhynskyi

📄 Implementing Go-Flavored Concurrency in C – Being done as part of Anton's work on his Solod compilable-to-C Go subset. Anton Zhiyanov

📄 How a Malicious Go Module Exposed a Network of GitHub Malware Lures Kirill Boychenko (Socket)

📄 6 Security Settings Every GitHub Maintainer Should Enable This Week Joseph Katsioloudes (GitHub)

🛠 Code & Tools

Fyne 2.8: A Big Update for the Popular GUI Toolkit — The cross-platform GUI toolkit lands its biggest release in years, adding GPU-accelerated shapes, shadows and custom GLSL shaders, richer Markdown rendering, multi-monitor window APIs, and more.

Fyne Team

AI Wrote the Diff. Who Reviews It? — Open-source multi-agent PR review, drops into GitHub Actions.

Agentfield.ai sponsor

GoLand 2026.2 Released — The latest release of the commercial Go IDE now integrates with the go fix tool and introduces a new 'Go optimization' tool that brings profiling, escape analysis, and struct optimization into one place.

Artem Pronichev (JetBrains)

🤖 Microsoft Agent Framework for Go in Public Preview — Microsoft follows in Google ADK Go's footsteps with its own framework for building, orchestrating and deploying AI agents and workflows. GitHub repo.

Quim Muntal (Microsoft)

💡 The New Stack shares some more background on the project, pointing a finger at Anthropic and OpenAI for not yet supporting Go directly with their similar SDKs.

💬 Chatto: A Go-Powered Group/Team Chat App — A complete, self-hostable Slack-like (except fast and doesn't nag about AI features constantly) group chat with a Go backend and SvelteKit frontend. GitHub repo.

Hendrik Mans

🎨 Sketchy: A Framework for Creating Generative Art in Go — This is pretty slick. Powered by Ebitengine and canvas behind the scenes.

Vernon Miller

🔒 Tinyauth 5.1 – Tiny authorization and authentication server. v5.1 marks it becoming officially OpenID Connect™ Certified and adds support for auth through Tailscale and deny-by-default access controls.
Echo 5.3 – The popular web framework adds support for the new HTTP QUERY method and adds a mechanism to automatically handle HEAD requests on GET endpoints.
THUNDERSNAP – A new library from Tailscale for replicating, forking, and sharing container snapshots. More here.
Tetra3D 0.18 – PS1/N64-inspired Ebitengine-based hybrid 3D renderer.
Gofeed 1.4 – A robust library for parsing RSS, Atom and JSON feeds.

📰 Classifieds

Sum types, exhaustive pattern matching, Option — the type system Go lacks, compiled to plain Go. Every Go module works. gala.fyi.

📢 Elsewhere in the ecosystem

✨ This week, I stumbled upon this table of the top 100 starred Go repos on GitHub. How far can you go before you find something new to you?
Last month, Bruce Ediger created a TFTP honeypot in Go (TFTP is a file transfer protocol often used by embedded devices and network hardware). Here's the results of what turned up on it.
If you woke up to AWS billing alerts forecasting you'll owe them billions of dollars at the end of the month, you're not alone.
GitHub's Dependabot is now giving packages a three-day default cooldown before opening version update PRs, though security fixes are exempt.
Did you know SQLite supports STRICT tables that actually attempt to enforce data is of the correct type?