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How Uber Protects Against Retry Storms
What if retries could know when they’re helping, and when they’re making things worse? Uber Engineering built error ownership to prevent and contain retry storms.
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The latest blog posts to take off on Hacker News. 2,560 posts.
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You can run Git on object storage if you re-make packfiles
Git packfiles were designed for mmap and local disk, so pulling one object out of a bucket means guessing at a byte range. I wrote a new format instead.
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A 32-year-old bug walks into a Telnet server
A long, long time ago, in a land free of binary exploit mitigations, when Unix still roamed the Earth, there lived a pre-authentication Telnetd vulnerability. In fact, this vulnerability was born so long ago (way back in 1994) that it may even be older than you. To put the
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Performance Improvements in .NET 11
Take a tour through hundreds of performance improvements in .NET 11.
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Principles for Fast Tokio Applications
A microscope for Tokio and Rust applications
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Why is the x86 undefined instruction called ud2? Why 2?
It came after ud0 and ud1.
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118M Queries per Second on Neki
We ran a massive, sharded Postgres database at 118.5 million queries per second, with 200k queries per second on each shard across 512 shards.
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Neki – Sharded Postgres
Neki, sharded Postgres by PlanetScale, is now available in platform preview.
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Compute-efficient pretraining and scaling to trillion-parameter models
Research update on compute-efficient pretraining and scaling to trillion-parameter models.
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FreeBSD 14.5-Release
The FreeBSD Release Engineering Team is pleased to announce the availability of FreeBSD 14.5-RELEASE. This is the sixth release of the stable/14 branch.
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Speculative Decoding in vLLM on AMD GPUs
A practical guide to speculative decoding in vLLM on AMD GPUs, covering draft-and-verify mechanics, MTP, EAGLE-3, DFlash, DSpark, configuration, tuning, and ben
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It took a year to ship WebAssembly in Anubis
After a year of work, hundreds of commits, 5 generations of pull requests, dozens of tests, rewriting part of Anubis in Rust, the first compiler bug of my career, and at least three times making my tower run out of ram I think I have finally done it. The next version of Anubis will ship with WebAssembly-based proof of…
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NetBSD 9.5 released and EOL for NetBSD-9
The NetBSD Project is pleased to announce NetBSD 9.5, the fifth (and final) release from the NetBSD 9 stable branch.
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Asahi Linux on M3
Porting Linux to Apple Silicon
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Ok, but does it scale?
This is probably the question I get asked most about Spacetime. It’s a simple enough question, and it certainly seems like it should have a simple answer. Scaling is a complex topic, and the devil is…
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Async Rust vs RTOS showdown (2022)
It's time for another technical blog post about async Rust on embedded. This time we're going to pitch Embassy/Rust against FreeRTOS/C on an STM32F446 microcontroller.
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We could save petabytes of cache storage with Zstandard and Pingora
Could we get more cache space with the same hardware? We prototyped compression inside Cloudflare's cache to find out.
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Engineering of the fastest WebAssembly interpreters
The optimizations behind Wasmi 2.0, and how they compare to Wasm3 and Stitch.
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ReactOS 0.4.16
ReactOS is a free, opensource reimplementation of windows
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Haiku R1/beta6 has been released
After about two years since the last beta, and only about a week after Haiku’s 25th birthday, Haiku R1/beta6 has been released! See “Release Notes” for the release notes, “Press contact”, for press inquiries … and …
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Arbitrary code execution in QubesOS via copy-to-VM error reporting backchannel
We have published Qubes Security Bulletin (QSB) 118: Dom0 arbitrary code execution in qvm-copy-to-vm error reporting. The text of this QSB and its accompanying cryptographic signatures are reproduced below, followed by a general explanation of this announcement and authentication instru...
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Creepy Crawlies
You've probably heard me complain about the "AI crawlers" before, but now I actually have some hard numbers I can put up to show their im...
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Don't use musl if you care about performance
I've spent most of my career working inside the JVM, with a sidebar of Python. So the first time I hit incompatible libc with containerized Bifrost, and GPT suggested musl as the solution, not only did I jump on it, I moved my other Rust projects to musl as
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Saving 100 terabytes of memory by optimizing 1.1.1.1's DNS cache
Five Rust-level memory optimizations to the DNS cache layout of Big Pineapple cut per-entry memory by 56%, freeing approximately 100 TB of memory across Cloudflare's fleet.
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Asahi Linux Progress Report: Linux 7.2
Porting Linux to Apple Silicon
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IBM Unveils Next Generation Dual-Architecture Processor for IBM Z and LinuxONE
The new processor is being developed to allow organizations to run Arm-native Linux environments simultaneously with z/OS and Linux on IBM Z, while benefiting from IBM’s established security, reliability, and scale.
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Hunting Down a Go Runtime Bug on 32-Bit Embedded Systems
A customer's Go application kept crashing on a 32-bit embedded Linux system. We traced the fatal netpoll error to a pointer aliasing bug in the Go runtime.
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SeL4 security proofs now complete on AArch64
Proofcraft’s Chief Engineer Rafal Kolanski has completed a major “architecture split” overhaul of the seL4 proofs, resulting in the removal of 250k lines of proof and strengthening the link between proofs on different architectures. These changes will significantly reduce future effort required to maintain and extend…
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Monzo Stand-In
Our customers reasonably expect to be able to spend on their card, make bank transfers and pay their bills 24 hours a day, 365 days a year. Their lives don’t have downtime for maintenance so nor should we. We dedicate a lot of our engineering effort to minimise the risk of downtime during technical migrations and…