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A new Go API for JSON - The Go Programming Language

Go 1.27 introduces new encoding/json/v2 and encoding/json/jsontext packages.
Michael Pratt, Joe Tsai, Daniel Martí, Johan Brandhorst-Satzkorn, Roger Peppe, Chris Hines…
Go has included support for JSON in the standard library since well before Go 1.0.

go.dev10d ago

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Our Response To The eMudhra Key Disclosure Incident - The Go Programming Language

How the Go team responded to the eMudhra certificate compromise with our first-ever URGENT track security release.
Roland Shoemaker, on behalf of the Go Security team 26 October 2026 On October 19…
Within approximately seven and a half hours of being notified, we shipped a targeted patch…

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Help set Go's priorities for next year - The Go Programming Language

Share your experience with Go in the 2026 Go Developer Survey, open through November 3.
Cameron Balahan, on behalf of the Go team 21 October 2026 Hi Gophers!
The 2026 Go Developer Survey is now open.

go.dev24d ago

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Arch-specific SIMD in Go - The Go Programming Language

Go 1.27 introduces experimental arch-specific SIMD vector APIs
Since Go 1.26, we have supported an experimental amd64 SIMD API.
Now in Go 1.27, we support two more architectures: arm64 and wasm .

go.dev25d ago

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Blog Index - The Go Programming Language

Interactive refactoring in gopls , 16 October 2026 Hongxiang Jiang Introducing interactive refactoring in gopls and the LSP: a new capability that brings dynamic, multi-step refactorings into your favorite editor.
Better HTTP/1 connection reuse , 14 October 2026 Nicholas Husin and Damien Neil Go 1.27 includes a change to the HTTP client that can make programs sending many sequential HTTP/1 requests significantly faster.
Arch-specific SIMD in Go , 2 October 2026 Junyang Shao and David Chase Go 1.27 introduces experimental arch-specific SIMD vector APIs Platform-independent SIMD in Go , 24 September 2026 David Chase and Junyang Shao Go 1…

go.dev25d ago

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Type Construction and Cycle Detection - The Go Programming Language

Go 1.26 simplifies type construction and enhances cycle detection for certain kinds of recursive types.
Go’s static typing is an important part of why Go is a good fit for production systems that have to be robust and reliable.
When a Go package is compiled, it is first parsed—meaning that the Go source code within that package is converted into an abstract syntax tree (or AST).

go.dev25d ago

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Platform-independent SIMD in Go - The Go Programming Language

Go 1.27 adds an experimental platform-agnostic SIMD API
Go 1.26 and 1.27 include experimental APIs for Single Instruction Multiple Data (SIMD) operations.
SIMD is a native feature of many modern CPUs that allows software to perform uniform operations across vectors of data very quickly, such as adding 8 pairs of float64 values in a single instruction.

go.dev25d ago

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Generic Methods - The Go Programming Language

Go 1.27 adds generic methods—a highly desired language feature.
Generics was a profound change for Go—it fundamentally expanded the kinds of programs that gophers could write by adding type parameters to the language.
One could now express generic types and functions in Go.

go.dev25d ago

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Better HTTP/1 connection reuse - The Go Programming Language

Go 1.27 includes a change to the HTTP client that can make programs sending many sequential HTTP/1 requests significantly faster.
It sends a GET request to url and returns the HTTP status code.
Using HTTP/1 ( GODEBUG=http2client=0 ), calling this function 100 times against index.golang.org takes ~710 milliseconds on Go 1.26 on my machine.

go.dev25d ago

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Go 1.27 is released - The Go Programming Language

Go 1.27 adds generic methods, encoding/json/v2 package, uuid package, faster memory allocation, goroutine leak profiles, and more.
Nicholas Husin, on behalf of the Go team 19 August 2026 Today the Go team is pleased to release Go 1.27.
You can find its binary archives and installers on the download page .

go.dev25d ago

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Goroutine Leak Profiles - The Go Programming Language

Go 1.27 includes new goroutine leak profiles.
Go’s concurrency features are powerful and easy to use, but that same ease can sometimes lead even seasoned developers to make mistakes.
Fortunately, the Go ecosystem comes equipped with useful tools for debugging, e.g., the race detector , but even existing tools may miss some concurrency bugs, such as the topic of this article, the goroutine leak .

go.dev25d ago

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Introducing the pkg.go.dev API - The Go Programming Language

Introducing the new programmatic API for pkg.go.dev, allowing developers to fetch package and module data directly.
Ethan Lee, Hana Kim, and Jonathan Amsterdam 21 May 2026 Since its inception, pkg.go.dev has established itself as the Go community’s primary resource for package documentation and discovery.
While we initially prioritized creating a comprehensive and highly accessible web interface for users, the need for programmatic access has become increasingly clear.

go.dev25d ago

Tech

Size-Specialized Memory Allocation - The Go Programming Language

Go 1.27 improves performance of small allocations using size-specialized allocation functions.
Go 1.27 includes faster memory allocation for allocations of 80 bytes or fewer.
Allocations can be up to 20-30% faster, making allocation-heavy programs up to 1% faster.

go.dev25d ago

Tech

Interactive refactoring in gopls - The Go Programming Language

Introducing interactive refactoring in gopls and the LSP: a new capability that brings dynamic, multi-step refactorings into your favorite editor.
When editing code in a modern IDE or editor, developers rely on its refactoring features to automate common transformations.
Today, we are excited to introduce interactive refactoring in gopls , powered by a new capability we are proposing for the Language Server Protocol (LSP) that brings dynamic, multi-step dialogs directly into your favori…

go.dev25d ago

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