The Go Blog More powerful Go execution traces Michael Knyszek 14 March 2024 The runtime/trace package contains a powerful tool for understanding and troubleshooting Go programs. The functionality within allows one to produce a trace of each goroutine’s execution over some time period. With the go tool trace command (or the excellent open source gotraceui tool), one may then visualize and explore t

A common question developers new to Go have is “How do I organize my Go project?”, in terms of the layout of files and folders. The goal of this document is to provide some guidelines that will help answer this question. To make the most of this document, make sure you’re familiar with the basics of Go modules by reading the tutorial and managing module source. Go projects can include packages, co

David Chase and Russ Cox 19 September 2023 Go 1.21 includes a preview of a change to for loop scoping that we plan to ship in Go 1.22, removing one of the most common Go mistakes. The Problem If you’ve written any amount of Go code, you’ve probably made the mistake of keeping a reference to a loop variable past the end of its iteration, at which point it takes on a new value that you didn’t want.

Jonathan Amsterdam 22 August 2023 The new log/slog package in Go 1.21 brings structured logging to the standard library. Structured logs use key-value pairs so they can be parsed, filtered, searched, and analyzed quickly and reliably. For servers, logging is an important way for developers to observe the detailed behavior of the system, and often the first place they go to debug it. Logs therefore

Eli Bendersky, on behalf of the Go team 8 August 2023 Today the Go team is thrilled to release Go 1.21, which you can get by visiting the download page. Go 1.21 is packed with new features and improvements. Here are some of the notable changes; for the full list, refer to the release notes. Tool improvements The Profile Guided Optimization (PGO) feature we announced for preview in 1.20 is now gene

Cameron Balahan 31 July 2023 When you start a new project in Go, you might begin by cloning an existing project. That way, you can start with something that already works, making incremental changes instead of starting from scratch. For a long time now, we have heard from Go developers that getting started is often the hardest part. New developers coming from other languages expect guidance on a d

Russ Cox, for the Go team 10 November 2022 Today we celebrate the thirteenth birthday of the Go open source release. The Gopher is a teenager! It’s been an eventful year for Go. The most significant event was the release of Go 1.18 in March, which brought many improvements but most notably Go workspaces, fuzzing, and generics. Workspaces make it easy to work on multiple modules simultaneously, whi

Go vulnerability database The Go vulnerability database (https://vuln.go.dev) is a comprehensive source of information about known vulnerabilities in importable packages in public Go modules. Vulnerability data comes from existing sources (such as CVEs and GHSAs) and direct reports from Go package maintainers. This information is then reviewed by the Go security team and added to the database. We

Introduction to Go 1.19 The latest Go release, version 1.19, arrives five months after Go 1.18. Most of its changes are in the implementation of the toolchain, runtime, and libraries. As always, the release maintains the Go 1 promise of compatibility. We expect almost all Go programs to continue to compile and run as before. Changes to the language There is only one small change to the language, a

The Go 1.18 release adds support for generics. Generics are the biggest change we’ve made to Go since the first open source release. In this article we’ll introduce the new language features. We won’t try to cover all the details, but we will hit all the important points. For a more detailed and much longer description, including many examples, see the proposal document. For a more precise descrip

Introduction to Go 1.18 The latest Go release, version 1.18, is a significant release, including changes to the language, implementation of the toolchain, runtime, and libraries. Go 1.18 arrives seven months after Go 1.17. As always, the release maintains the Go 1 promise of compatibility. We expect almost all Go programs to continue to compile and run as before. Changes to the language Generics G

Russ Cox, for the Go team 14 December 2021 We have just released Go 1.18 Beta 1, which you can get by visiting the download page. The official Go 1.18 release won’t happen for a couple of months yet. This is the first preview release of Go 1.18, to let you kick the tires, take it for a spin, and let us know what problems you encounter. Go 1.18 Beta 1 represents an enormous amount of work by the en

Russ Cox, for the Go team 10 November 2021 Today we celebrate the twelfth birthday of the Go open source release. We have had an eventful year and have a lot to look forward to next year. The most visible change here on the blog is our new home on go.dev, part of consolidating all our Go web sites into a single, coherent site. Another part of that consolidation was replacing godoc.org with pkg.go.

Matt Pearring and Alex Rakoczy 16 August 2021 Today the Go team is thrilled to release Go 1.17, which you can get by visiting the download page. This release brings additional improvements to the compiler, namely a new way of passing function arguments and results. This change has shown about a 5% performance improvement in Go programs and reduction in binary sizes of around 2% for amd64 platforms

Russ Cox, for the Go team 10 November 2020 Today we celebrate the eleventh birthday of the Go open source release. The parties we had for Go turning 10 seem like a distant memory. It’s been a tough year, but we’ve kept Go development moving forward and accumulated quite a few highlights. In November, we launched go.dev and pkg.go.dev shortly after Go’s 10th birthday. In February, the Go 1.14 relea

The following stories are a small sample of the many ways that Go is used at Google. How Google’s Core Data Solutions Team Uses Go Google’s mission is “to organize the world’s information and make it universally accessible and useful.” One of the teams responsible for organizing that information is Google’s Core Data Solutions team. The team, among other things, maintains services to index web pag

Introduction to Go 1.15 The latest Go release, version 1.15, arrives six months after Go 1.14. Most of its changes are in the implementation of the toolchain, runtime, and libraries. As always, the release maintains the Go 1 promise of compatibility. We expect almost all Go programs to continue to compile and run as before. Go 1.15 includes substantial improvements to the linker, improves allocati

Jean de Klerk and Jonathan Amsterdam 7 July 2020 Introduction This post is part 5 in a series. Part 1 — Using Go Modules Part 2 — Migrating To Go Modules Part 3 — Publishing Go Modules Part 4 — Go Modules: v2 and Beyond Part 5 — Keeping Your Modules Compatible (this post) Note: For documentation on developing modules, see Developing and publishing modules. Your modules will evolve over time as you

Julie Qiu 15 June 2020 We’re excited to announce that the codebase for pkg.go.dev is now open source. The repository lives at go.googlesource.com/pkgsite and is mirrored to github.com/golang/pkgsite. We will continue using the Go issue tracker to track feedback related to pkg.go.dev. Contributing If you are interested in contributing to any issues related to pkg.go.dev, check out our contribution

The Go team 9 June 2020 When the Go project began, “an overarching goal was that Go do more to help the working programmer by enabling tooling, automating mundane tasks such as code formatting, and removing obstacles to working on large code bases” (Go FAQ). Today, more than a decade later, we continue to be guided by that same goal, especially as it pertains to the programmer’s most critical tool