Go’s place between C and Python in terms of abstraction and garbage collection memory management model has made it attractive to programmers looking for a fast but reasonably high level language. However, there is no free lunch. Go’s abstractions, especially…

Recommended: Shift-based DFAs, by @pervognsen. gist.github.com/pervognsen/218… Tried it out for replacing Go's utf8.Valid. Don't get to see this very often:

Experimental implementation of a proposed v2 encoding/json package - go-json-experiment/json

This post will shed some light on how we were able to optimise one of our frontends, reducing the typical project’s run time by half…

I can confirm this. What most people don't realize is how much time is spend in mallocgc in #golang. It's death by a thousand paper cuts that is difficult to see. Here is a toy app hiding 23.7% time in mallocgc. See screenshot 2 where with focus_on(). Real…

After a number of attempts, a concurrent Map for Go is ready. It implements CLHT algorithm with a number of modifications. So far, the map looks very promising to me. github.com/puzpuzpuz/xsyn…

Example code for Go generics. Contribute to mattn/go-generics-example development by creating an account on GitHub.

This proposal is for use with #43651. We propose using type parameters to add compile-time-type-safe variants of sync.Pool, sync.Map, and atomic.Value. This proposal is not targeted for any specifi...

Happy to see this implemented (even as a WIP/Draft). Also take a note how small patch is. @Tailscale rocks as always but don't bring this to your prod, for now 😄#golang twitter.com/commaok/status…

I hacked up a simple way to assert that a Go value is immutable. It's pretty raw and certainly has bugs, but it appears to work: github.com/tailscale/go/p… (And big hat tip and thank you to @Tailscale, where amazingly enough this was part of my day job today.)

Should work with normal -race if reflect.Freeze does fake read I think. This would allow to use existing -race CI config rather than a new build. twitter.com/bradfitz/statu…

Proposal: Soft memory limit Author: Michael Knyszek Summary I propose a new option for tuning the behavior of the Go garbage collector by setting a soft memory limit on the total amount of memory t...

Sometimes to get good speedup you just need to read the code, thanks @ignaciohagopian #golang twitter.com/ignaciohagopia…

Two low-hanging fruit optimizations in strings.Replace that allows double-digit speedup and memory saving in the existing reference benchmark. #golang #performance go-review.googlesource.com/c/go/+/343089

This past summer, @markgritter spend 25 days battling the Go garbage collector—and emerged victorious. Good news: WE DID NOT HAVE TO REWRITE OUR CLIENT IN RUST. 🙅🏻‍♀️🦀 Read this post for Mark's epic journey to reducing the multi-gigabyte memory spikes. a…

Here’s how we went from using 1400KB of RAM per repo to just 310KB without affecting latency.

As discussed in #33283, Go's implementation or valueCtx.Value is recursive which means that the cost grows linearly with the depth of the context chain. But one issue not discussed there is tha...