thepudds

I'm proud to officially announce CUE Labs!

I co-founded CUE Labs with @myitcv.io to build a Configuration Control Plane, solving config chaos with CUE. Our work also provides the stewardship for the @cuelang.org open source project.

Read our launch post: cue.dev/blog/announc...

So excited to finally share what we've been building at CUE Labs!

Proud to be on this mission with @mpvl.io, @myitcv.io, @rog.bsky.social, @hylomorphism.bsky.social, and @dominikdm.bsky.social.

For some added fun, also see go.dev/cl/715362, wherein I discover that VPCOMPRESSQ is horrifically slow on AMD Zen 4, but only with a memory destination.

And thanks to @lemire.bsky.social for writing about this, which made this much faster to track down!

If you have an interest in understanding garbage collection better, or in how Go's new GC works under-the-hood, I highly recommend reading @michael.express's thorough guide through Go's current and Green Tea GC.

I am using it to test our Go modules against the latest versions of their dependencies (with "go get -u") on a schedule, to be notified early of compatibility issues, but without the supply chain attack risk or the Dependabot churn.

Resurrecting an old post about how I write HTTP clients in Go since I am doing this again for the 89432894023 time.

blainsmith.com/articles/how...

#GoLang #HTTP

I see a future in #jj-vcs: steveklabnik.com/writing/i-se...

I really do like Golang being "batteries included".

It took only a few hours to write a moderately featureful TLS-terminating reverse HTTP proxy that used nothing outside the built-in libraries.

The only compromise was using JSON for the configuration file. I would have preferred textproto…

This is a very cool advanced #jj-vcs workflow: flames-of-code.netlify.app/blog/my-jj-w...

Absolutely hilarious.

TBH, though, it probably would not have happened with the original TIE fighter ASCII art:

|A|
|V|

Very nice save by cutting over to:

|-()-|

(Maybe the Star Wars wiki needs to be updated too? Is
@markhamillofficial.bsky.social
the admin on that? 🤔)

Oh my god it actually worked.

This might be my funniest—but totally serious—cryptography engineering contribution.

@simonwillison.net with some commentary on the new CrossOriginProtection CSRF protection in the http package for #golang 1.25...

🚀

FWIW, I think at least some of the early conversation about relying on Sec-Fetch-Site in the Go standard library might have happened here on Bluesky.

(@filippo.abyssdomain.expert with @empijei.bsky.social, @jub0bs.com, others...).

bsky.app/profile/fili...

(SMP support a ~couple months ago, the gvisor network stack running under UEFI more recently, ...)

bsky.app/profile/andr...

@andreabarisani.bsky.social is the author of the new-ish proposal for bare metal support for Go, which seems to be gathering some momentum AFAICT.

Andrea continues to share some fairly exciting progress... 🚀

( #golang proposal: github.com/golang/go/is... )

Fun little Go compiler CL merged today: go.dev/cl/706655

Uninlined generic functions have a "dict" arg, since Go generics are neither erased nor monomorphized, but instead instantiated for each "GC shape" (e.g. T=*int and T=*float64 get the same code, but T=int32 and T=int64 do not).

Stupid #jj-vcs tricks

andre.arko.net/2025/09/28/s...

OK, I love this. tl;dr using knowledge of your allocator, speed up linked list traversal by adding a branch that guesses where the next linked list element is and pre-populates the "next" variable to eliminate stalls if the allocations are well-behaved.

proposal: x/debug/trace: add package for parsing execution traces · Issue #62627 · golang/go As part of #60773 (tracking issue #57175) I've been working on a new parser for the execution tracer, and to save work down the line I've also been trying to come up with a nice API that would work...

If you haven't been keeping up, Go 1.21 reduced overhead from ~10% to ~1%. 1.22 overhauled the format to improve reliability and add information. 1.25 has a built in trace flight recorder. And we have an active proposal (go.dev/issue/62627) for a trace parsing package to enable arbitrary tooling.

Go's execution tracer is a woefully underutilized tool. It contains tons of information about what is happening at any given moment that you won't get with a profile.

In addition to showing flight recording capabilities, this post provides a nice example of how to use tracing to diagnose a problem.

The -toolexec flag hides a super-power in the Go toolchain: it lets you turn every go build into a programmable pipeline. In this session we’ll reveal how a simple wrapper command can inject custom… Unleashing the Go Toolchain - Kemal Akkoyun

I recently spoke at GopherCon UK 2025 about the hidden power of #Go’s `-toolexec` flag. How it can turn every `go build` into a programmable pipeline for things like error-handling enforcement and observability hooks. Here’s the recording:

YouTube video by GopherCon UK Swiss Maps in Go - Bryan Boreham

My talk from #gopherconuk is up on YouTube!
My take on how map is implemented in Go, and what changed from Go 1.23 to 1.24 and 1.25.

youtu.be/M05t7Q6LbFs

* Talk contains no AI, but does contain pictures of cats.

New blog post: Security through intentional redundancy

commaok.xyz/post/securit...

Screw PXE, this means the entire Go TLS and networking stack is available under UEFI.

In seconds I added DHCP and an SSH server to remotely manage my pre-boot environments.

I see much potential.

This talk is like the solstice, it appears twice a year :)

I've been eager to get more context and commentary on those slides. Fortunately, @dave.cheney.net gave the talk again at GopherCon Europe 2025, and the recording is now live! www.youtube.com/watch?v=RZe8...

YouTube video by GopherCon Europe Faster Go Maps With Swiss Tables - Michael Pratt | GopherCon EU 2025

My GopherCon EU talk about Swiss Table maps is now available!

youtu.be/aqtIM5AK9t4

proposal: simd: architecture-specific SIMD intrinsics under a GOEXPERIMENT · Issue #73787 · golang/go Update (08/20/2025): A preliminary implementation of AMD64 low-level SIMD package is being developed on the dev.simd branch. You're welcome to check it out and try it with your use cases. Feedback ...

Ooh, the SIMD WIP stdlib API for #golang is ready for people to poke!

From Cherry from a few minutes ago:

> As of today, we've landed a preliminary version with a reasonable API coverage. You're welcome to check out the dev.simd branch and try it with your use cases.

github.com/golang/go/is...

🚀

Predictable memory accesses are much faster https://lemire.me/blog/2025/08/15/predictable-memory-accesses-are-much-faster/

What's coming in Go 1.25 What's coming in Go 1.25 GopherCon UK, 2025 - Daniel Martí @mvdan.cc

Here are the slides for my "What's coming to Go 1.25" talk at #GopherConUK!

#golang