_content/blog/go1.24.md
Today the Go team is excited to release Go 1.24, which you can get by visiting the download page.
Go 1.24 comes with many improvements over Go 1.23. Here are some of the notable changes; for the full list, refer to the release notes.
Go 1.24 now fully supports generic type aliases: a type alias may be parameterized like a defined type. See the language spec for details.
Several performance improvements in the runtime have decreased CPU overhead
by 2–3% on average across a suite of representative benchmarks. These
improvements include a new builtin map implementation based on
Swiss Tables, more efficient
memory allocation of small objects, and a new runtime-internal mutex
implementation.
go command now provides a mechanism for tracking tool dependencies for a
module. Use go get -tool to add a tool directive to the current module. Use
go tool [tool name] to run the tools declared with the tool directive.
Read more on the go command in the release notes.test analyzer in go vet subcommand reports common mistakes in
declarations of tests, fuzzers, benchmarks, and examples in test packages.
Read more on vet in the release notes.The standard library now includes a new set of mechanisms to facilitate FIPS 140-3 compliance. Applications require no source code changes to use the new mechanisms for approved algorithms. Read more on FIPS 140-3 compliance in the release notes. Apart from FIPS 140, several packages that were previously in the x/crypto module are now available in the standard library.
Benchmarks may now use the faster and less error-prone
testing.B.Loop method to perform benchmark iterations
like for b.Loop() { ... } in place of the typical loop structures involving
b.N like for range b.N. Read more on
the new benchmark function in the
release notes.
The new os.Root type provides the ability to perform
filesystem operations isolated under a specific directory. Read more on
filesystem access in the
release notes.
The runtime provides a new finalization mechanism,
runtime.AddCleanup, that is more flexible,
more efficient, and less error-prone than
runtime.SetFinalizer. Read more on
cleanups in the release notes.
Go 1.24 adds a new go:wasmexport directive for Go programs to export
functions to the WebAssembly host, and supports building a Go program as a WASI
reactor/library.
Read more on WebAssembly in the release notes.
Please read the Go 1.24 release notes for the complete and detailed information. Don't forget to watch for follow-up blog posts that will go in more depth on some of the topics mentioned here!
Thank you to everyone who contributed to this release by writing code and documentation, reporting bugs, sharing feedback, and testing the release candidates. Your efforts helped to ensure that Go 1.24 is as stable as possible. As always, if you notice any problems, please file an issue.
Enjoy Go 1.24!