Michael Pratt
@prattmic.com
📤 1547
📥 206
📝 215
Hacking on the Go runtime and gVisor. 🏳️🌈
New rule dropped: anything above 11239 isn't the real Brooklyn.
add a skeleton here at some point
2 days ago
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apnews.com/article/mamd...
NY to tax second homes in NYC worth >$5M Real internet commenter: “This will disproportionately negatively affect middle-class people and families” LMAO
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New York to tax luxury second homes in NYC but stops short of hiking income taxes on the wealthy
New York state lawmakers are expected to place a new tax on luxury second homes in New York City, appeasing Mayor Zohran Mamdani and his progressive base as he moves to fund his ambitious agenda on th...
https://apnews.com/article/mamdani-nyc-hochul-tax-rich-a30833850bfdbd638634def266ca76dd
9 days ago
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Michael Pratt
Felix Geisendörfer
21 days ago
PSA: Green Tea GC in go1.26 is incredible 🚀 This is what we saw for two big Go services. We'll try to gather more data and share it soon.
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Michael Pratt
Jake Bailey
22 days ago
My talk was accepted to GopherCon 2026 in Seattle! I'm back with more TypeScript+Go goodness, this time with another year's worth of experience under our belt. I had a blast at last year's conference, so here's to yet another one!
www.gophercon.com/agenda/speak...
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Michael Pratt
Filippo Valsorda
about 1 month ago
A bit over two years after starting to work on it... Go is officially FIPS 140-3 certified 💥
csrc.nist.gov/projects/cry...
I am pretty confident Go is now one of the most—if not the most—seamless and complete FIPS 140-3 compliance solutions... with a single env var, out of the box.
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Michael Pratt
Carmen H. Andoh
about 1 month ago
csrc.nist.gov/projects/cry...
CMVP has (finally!) Validated the Go Crytogrpahy Module for FIPS 140-3. Congrats and Thank you to
@geomys.org
and
@filippo.abyssdomain.expert
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Cryptographic Module Validation Program | CSRC | CSRC
Welcome to the CMVP The Cryptographic Module Validation Program (CMVP) is a joint effort between the National Institute of Standards and Technology under the Department of Commerce and the Canadian C...
https://csrc.nist.gov/projects/cryptographic-module-validation-program/certificate/5247
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Michael Pratt
Liz Rice 💛💙🐝
about 1 month ago
@philpearl.bsky.social
looked at
#golang
Swiss tables performance ⭐️
philpearl.github.io/post/swissing_a_table/
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Swissing a table · Phil Pearl's Blog
Moving step by step from a simple hash table to a “swiss table” — the design behind Go’s new map implementation.
https://philpearl.github.io/post/swissing_a_table/
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Michael Pratt
Mekka Okereke
about 2 months ago
Here's an example. Average rent in LA for a 1 BR is $2500. A woman that lives in LA and earns an hourly wage, knows that if she can't work for a month, she needs to come up with $2500 or she will be homeless. After bills, she has only $200 left over. She saves almost all of it, and doesn't eat out.
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Michael Pratt
Damien Neil
about 2 months ago
Holy cheese my untyped composite literal proposal from 2015 just got accepted.
#golang
github.com/golang/go/is...
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proposal: spec: type inferred composite literals · Issue #12854 · golang/go
Composite literals construct values for structs, arrays, slices, and maps. They consist of a type followed by a brace-bound list of elements. e.g., x := []string{"a", "b", "c"} I propose adding unt...
https://github.com/golang/go/issues/12854
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Michael Pratt
David Buchanan
2 months ago
>benchmark perf improvements >it's slower
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Michael Pratt
Quim Muntal
2 months ago
Compiler nerd joy: making some
#golang
switch statements ~2.5x faster ⚡
go.dev/cl/756340
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Gerrit Code Review
https://go.dev/cl/756340
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Michael Pratt
Go
2 months ago
“Type Construction and Cycle Detection” by Mark Freeman —
https://go.dev/blog/type-construction-and-cycle-detection
#golang
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Michael Pratt
Alan Donovan
3 months ago
Find out how the source-level inliner in Go 1.26 can help you with API migrations.
go.dev/blog/inliner
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//go:fix inline and the source-level inliner - The Go Programming Language
How Go 1.26's source-level inliner works, and how it can help you with self-service API migrations.
https://go.dev/blog/inliner
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Michael Pratt
Go
3 months ago
“//go:fix inline and the source-level inliner” by Alan Donovan —
https://go.dev/blog/inliner
#golang
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Michael Pratt
Mayor Zohran Kwame Mamdani
3 months ago
Additionally, I want to speak directly to Iranian New Yorkers: you are part of the fabric of this city — you are our neighbors, small business owners, students, artists, workers, and community leaders. You will be safe here.
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Michael Pratt
Go
3 months ago
“Allocating on the Stack” by Keith Randall —
https://go.dev/blog/allocation-optimizations
#golang
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Michael Pratt
jub0bs
3 months ago
🚀 "spec: generic methods for Go" has been accepted! You will soon (1.27?) be able to declare (on concrete types only) methods that introduce type parameters, i.e. type parameters other than the ones (if any) that come from the method's receiver.
github.com/golang/go/is...
#golang
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spec: generic methods for Go · Issue #77273 · golang/go
Proposal: Generic Methods for Go A change of view. Background For clarity, in the following we use the term concrete method (or just method when the context is clear) to describe a non-interface me...
https://github.com/golang/go/issues/77273#issuecomment-3962618141
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My phone is now hot but the best part is I’m not sure if that is from the CPU emulator or from GitHub trying to render the 14k source file when I went to see how this works.
add a skeleton here at some point
3 months ago
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Michael Pratt
Filippo Valsorda
3 months ago
Dependabot security alerts have terrible signal-to-noise ratio, especially for Go vulns. That hurts security! Just turn it off and set up a pair of scheduled GitHub Actions, one running govulncheck and the other running CI with the latest version of your deps. Less work, less risk, better results!
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Turn Dependabot Off
I recommend turning Dependabot off and replacing it with a pair of scheduled GitHub Actions, one running govulncheck, and the other running CI against the latest version of your dependencies.
https://words.filippo.io/dependabot/
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Michael Pratt
Go
3 months ago
“Using go fix to modernize Go code” by Alan Donovan —
https://go.dev/blog/gofix
#golang
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Michael Pratt
Anton Zhiyanov
4 months ago
Go 1.26 is out, and the announcement says: "Over the next few weeks, follow-up blog posts will cover some of the topics in more detail. Check back later." So you can wait a few weeks OR you can read my interactive Go 1.26 tour right away:
antonz.org/go-1-26
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Go 1.26 interactive tour
New with expressions, type-safe error checking, and faster everything.
https://antonz.org/go-1-26
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Michael Pratt
Jake Bailey
4 months ago
Some pretty awesome improvements in 1.26 for compiling/testing typescript-go. With a clean build/test cache, running the full test suite used to take 3m45s, but now takes just 2m10s.
add a skeleton here at some point
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Michael Pratt
Go
4 months ago
“Go 1.26 is released” by Carlos Amedee, on behalf of the Go team —
https://go.dev/blog/go1.26
#golang
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🍵
add a skeleton here at some point
4 months ago
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Michael Pratt
Jujutsu VCS
4 months ago
$ jj describe -m "Hello, world!"
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ICE out of my compiler
4 months ago
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Michael Pratt
Daniel Martí
4 months ago
Interesting expansion of generics in
#golang
👀
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Proposal: Generic Methods for Go · Issue #77273 · golang/go
Proposal: Generic Methods for Go A change of view. Background For clarity, in the following we use the term concrete method (or just method when the context is clear) to describe a non-interface me...
https://github.com/golang/go/issues/77273
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Michael Pratt
Jay Conrod
4 months ago
New blog post, with a perhaps mildly unpopular opinion:
jayconrod.com/posts/133/in...
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Integration tests are best tests
Itegration tests are the most important kind of tests. You should strive for excellent integration test coverage and invest relatively little time in unit tests. I've believed this since I worked on c...
https://jayconrod.com/posts/133/integration-tests-are-best-tests
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Michael Pratt
Eduardo Vela
4 months ago
We are hiring! CPU security and stuff
www.google.com/about/career...
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Michael Pratt
Jake Bailey
5 months ago
My GopherCon talk was just posted!
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GopherCon 2025: Porting the TypeScript Compiler to Go for a 10x Speedup V2 - Jake Bailey
YouTube video by Gopher Academy
https://youtu.be/PZm_YbE3fcA
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Michael Pratt
Filippo Valsorda
5 months ago
PSA: go.sum is not a lockfile. You never need to look at go.sum. go.mod has everything you need.
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go.sum Is Not a Lockfile
In Go, go.mod acts as both manifest and lockfile. There is never a reason to look at go.sum.
https://words.filippo.io/gosum/
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Michael Pratt
Anton Zhiyanov
5 months ago
Go 1.26 is coming soon, and the official release notes are pretty dry. So I prepared an interactive version with lots of examples. Read on and see!
antonz.org/go-1-26
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Go 1.26 interactive tour
New with expressions, type-safe error checking, and faster everything.
https://antonz.org/go-1-26
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Michael Pratt
Alan Donovan
5 months ago
The folks behind GopherCon 2025 have kindly shared video recordings of our talks; here's mine on modernizer tools for Go. Special thanks to the amazing Stacy Potenza for turning my rapid limey nerd mumbling into comprehensible closed captions.
www.youtube.com/watch?v=_VeP...
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GopherCon 2025: Analysis and Transformation Tools for Go Codebase Modernization - Alan Donovan
YouTube video by Gopher Academy
https://www.youtube.com/watch?v=_VePjjjV9JU
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Michael Pratt
Jeff Dean
5 months ago
My colleague Sanjay Ghemawat & I have done a fair bit of performance tuning of various pieces of code. We wrote an internal Performance Hints document ~2 years ago as a way of identifying some general principles & we've recently published a version of it externally. Doc:
abseil.io/fast/hints.h...
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Michael Pratt
Go
5 months ago
🎊 Go 1.26 Release Candidate 1 is released! 🏃♀️ Run it in dev! Run it in prod! File bugs!
https://go.dev/issue/new
🗣 Announcement:
https://groups.google.com/g/golang-announce/c/i0ei8EKtYjc/m/h0jl7InPCwAJ
⬇️ Download:
https://go.dev/dl/#go1.26rc1
#golang
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Michael Pratt
Alan Donovan
6 months ago
What's new in gopls 21:
go.dev/gopls/releas...
Please try it out: $ go install
golang.org/x/tools/gopls@latest
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Gopls release v0.21.0 (expected Dec 2025) - The Go Programming Language
https://go.dev/gopls/release/v0.21.0
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Michael Pratt
Anton Zhiyanov
6 months ago
Gist of Go: Concurrency is out! Learn Go concurrency from the ground up with 50 auto-tested exercises and tons of interactive examples. It's a full course + book in one.
antonz.org/go-concurrency
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Michael Pratt
Steve Klabnik
6 months ago
"why i think
#jj-vcs
is worth your time"
schpet.com/note/why-i-t...
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why i think jj-vcs is worth your time
https://schpet.com/note/why-i-think-jj-vcs-is-worth-your-time
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Michael Pratt
Anton Zhiyanov
6 months ago
The new chapter of my Go Concurrency book covers the scheduler and its implementation details. It's not meant to be a deep dive. But it's short, easy to understand, and will teach you more about goroutine scheduling than many other developers know.
antonz.org/go-concurren...
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Gist of Go: Concurrency internals
CPU cores, threads, goroutines, and the scheduler.
https://antonz.org/go-concurrency/internals
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Michael Pratt
🎱 Josh Branchaud ✨
6 months ago
I documented the steps and missteps I took with jj (jujutsu) getting a repo set up from scratch, initial commits made, and pushed to github. This is the intro workflow I needed, but couldn't find.
www.visualmode.dev/from-zero-to...
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From Zero to GitHub: Starting A New jj (Jujutsu) Repo
I document the steps and missteps that I take setting up a new jujutsu repo and pushing it to GitHub
https://www.visualmode.dev/from-zero-to-github-starting-a-new-jj-jujutsu-repo
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Michael Pratt
Anton Zhiyanov
6 months ago
Accepted! Go 1.26 will introduce per-state goroutine metrics: running, waiting, in syscalls, etc. Developers can use them to catch problems early without needing full traces.
antonz.org/accepted/gor...
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Go proposal: Goroutine metrics
Export goroutine-related metrics from the Go runtime.
https://antonz.org/accepted/goroutine-metrics
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reposted by
Michael Pratt
Dave Keating
6 months ago
BREAKING: This is huge news, the EU's equivalent of the 🇺🇸Supreme Court's 2015 Obergefell v. Hodges ruling. 🇪🇺Court of Justice just ruled all 🇪🇺countries must recognise same-sex marriages granted in other member states. This effectively legalises gay marriage across 🇪🇺
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https://www.reuters.com/world/europe/eu-court-says-same-sex-marriage-should-be-recognised-throughout-bloc-2025-11-25/
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Michael Pratt
Anton Zhiyanov
6 months ago
synctest — the package introduced in Go 1.25 to make concurrency testing easier — looks deceptively simple. But don't let its innocent appearance fool you. To really understand synctest, check out the new chapter of my interactive Go Concurrency book.
antonz.org/go-concurren...
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Gist of Go: Concurrency testing
Checking concurrent operations and time-sensitive code.
https://antonz.org/go-concurrency/testing
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Michael Pratt
Nick Ripley
6 months ago
Small contribution just before the Go 1.26 freeze:
go.dev/cl/610815
removes the hard-coded 100ms sleep from the CPU profiler for most platforms. This will make it more efficient and unblock deeper call stacks. As a bonus, uncovered and fixed an 8 year old bug in the profiler
go.dev/cl/722940
:)
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Michael Pratt
Michael Knyszek
6 months ago
My talk from GopherCon 2025 about Green Tea is up on YouTube!
www.youtube.com/watch?v=gPJk...
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GopherCon 2025 - Advancing Go Garbage Collection with Green Tea - Michael Knyszek
YouTube video by Gopher Academy
https://www.youtube.com/watch?v=gPJkM95KpKo
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Michael Pratt
Bryan Boreham
6 months ago
#GopherCon
2025 - the first videos are up!
@michael.express
gives a great overview of how the Go garbage-collector works, and the changes in the the new design.
www.youtube.com/watch?v=gPJk...
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GopherCon 2025 - Advancing Go Garbage Collection with Green Tea - Michael Knyszek
YouTube video by Gopher Academy
https://www.youtube.com/watch?v=gPJkM95KpKo
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Michael Pratt
Go
6 months ago
“Go’s Sweet 16” by Austin Clements, for the Go team —
https://go.dev/blog/16years
#golang
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Michael Pratt
André Arko
7 months ago
"By doing things voters wanted, he set unrealistic expectations. Soon, voters will expect ALL politicians to represent their interests. Then where will we be?”
www.mcsweeneys.net/articles/yea...
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Yeah, He Won, but He Was Up Against a Deeply Flawed Candidate
“I’m skeptical. The odds are that Mamdani’s victory is actually less significant than you think.” — Ross Douthat, New York Times - - -I was as surp...
https://www.mcsweeneys.net/articles/yeah-he-won-but-he-was-up-against-a-deeply-flawed-candidate
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Michael Pratt
Zohran Kwame Mamdani
7 months ago
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Michael Pratt
Andrew Ayer
7 months ago
New blog post: I'm Independently Verifying Go's Reproducible Builds:
www.agwa.name/blog/post/ve...
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I'm Independently Verifying Go's Reproducible Builds
Introducing Source Spotter, a Go Checksum Database auditor and Go toolchain reproducer
https://www.agwa.name/blog/post/verifying_go_reproducible_builds
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