1411
Running three hours of Ruby tests in under three minutes
Stripe uses Sorbet to type check our 15 million lines of Ruby code, making engineers more productive. Here's why we love Sorbet.
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 6,943 posts.
1412
Keeping Figma Fast: perf-testing the WASM editor
When a laptop crashed in an empty office, we knew it was time to overhaul our performance testing framework.
1413
DXGI debugging: Microsoft put me on a list
Why does Space Station 14 crash with ANGLE on ARM64? 6 hours later…
1414
FlashAttention-3: Fast and Accurate Attention with Asynchrony and Low-Precision
FlashAttention-3 achieves up to 75% GPU utilization on H100s, making AI models up to 2x faster and enabling efficient processing of longer text inputs. It allows for faster training and inference of LLMs, supports lower precision operations for improved efficiency.
1415
1416
Adding a new Bytecode instruction to the .NET runtime
Now that the CoreCLR is open-source we can do fun things, for instance find out if it’s possible to add new IL (Intermediate Language) instruction to the runtime.
1417
Unix Syscalls
On UNIX-like operating systems, userland processes invoke kernel procedures using the "syscall" feature. Each syscall is identified by a "syscall number" and has a short list of parameters, which both can vary between operating systems, hardware platforms, and configuration options.
1418
An immutable operating system
A post by August Lilleaas, published February 02, 2014.
1419
OS X Mountain Lion: Data Loss via 'Save As'
Update Dec 20, 2012 : Apple appears to have fixed this in a way by adding a “Keep changes in original document” checkbox in the save dialog. Bandaids are better than nothing. It is also possible to add a keyboard shortcut for Save As, which is partially hidden (option key).
1420
Why SQLite is so great for the edge
Everyone already knows that SQLite is great. This article makes the praise much more specific though — it explains why we, the developers of libSQL, think that SQLite is a great choice for bringing your data to the edge.
1421
Remote Code Execution in Alpine Linux
tl;dr I found several bugs in apk, the default package manager for Alpine Linux. Alpine is a really lightweight distro that is very commonly used with Docker...
1422
Sourcehut network outage post-mortem
sourcehut is a network of useful open source tools for software project maintainers and collaborators, including git repos, bug tracking, continuous integration, and mailing lists.
1423
First in-the-wild UEFI bootkit bypassing UEFI Secure Boot
ESET researchers are the first to publish an analysis of BlackLotus, the first in-the-wild UEFI bootkit capable of bypassing UEFI Secure Boot.
1424
Pipelines – a guided tour of the new IO API in .NET
Pipelines - a guided tour of the new IO API in .NET, part 1 (part 2 here) About two years ago I blogged about an upcoming experimental IO ...
1425
Flattening ASTs and other compiler data structures
This is an introduction to data structure flattening, a special case of arena allocation that is a good fit for programming language implementations. We build a simple interpreter twice, the normal way and the flat way, and show that some fairly mechanical code changes can give you a 2.4× speedup.
1426
Big GPUs don't need big PCs
Ever since I got AMD, Intel, and Nvidia graphics cards to run on a Raspberry Pi, I had a nagging question: What's the point? The Raspberry Pi only has 1 lane of PCIe Gen 3 bandwidth available for a connection to an eGPU. That's not much. Especially considering a modern desktop has at least one slot with 16 lanes of…
1427
Zero-latency SQLite storage in every Durable Object
Kenton Varda introduces the next iteration of Cloudflare's Durable Object platform, which recently upgraded from a key/value store to a full relational system based on SQLite. For useful background on …
1428
Remote iPhone exploitation part 2: a remote ASLR bypass
Posted by Samuel Groß, Project ZeroThis post is the second in a series about a remote, interactio...
1429
How RocksDB Works
Over the past years, the adoption of RocksDB increased dramatically. It became a standard for embeddable key-value stores.
1430
1431
Farewell EC2-Classic, it’s been swell
It is time to celebrate EC2-Classic, which defined early cloud computing, and which is finally retiring.
1432
How to speed up the Rust compiler in September 2026
My last post on the Rust compiler’s performance was two months ago and a lot has happened since then.
1433
1434
1435
io_uring is faster than mmap
Sourcing data directly from disk IS faster than caching in memory. I brought receipts. Because hardware got wider but not faster, the old methods don't get you there. You need new tools to use what is scaling and avoid what isn't.
1436
Modernizing C arrays for greater memory safety: a case study in the Linux kernel
How to modernize C arrays for greater memory safety: a case-study in refactoring the Linux kernel and a look to the future Kees Cook C i...
1437
Why Monzo's bank transfers weren't working on the 30th of May
A technical problem at the company we use to connect to Faster Payments caused issues with bank transfers. To fix it, we’re bringing everything in-house instead.
1438
K8s with 1M nodes
This is an effort to create a fully functional Kubernetes cluster with 1 million active nodes.
1439
1440
Guix Reduces Bootstrap Seed by Half
Blog posts about GNU Guix.