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Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 6,945 posts.
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XFaaS: Hyperscale and Low Cost Serverless Functions at Meta
This is one of several papers I’ll be reading from 2023’s Symposium on Operating Systems Principles (SOSP). If you’d like to receive regular updates as soon as they’re published, check out my newsletter or follow me on the site formerly known as Twitter . Enjoy!
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The hidden complexity of scaling WebSockets
WebSockets are at the very core of Compose. Learn how we scaled them to support 1000s of concurrent users.
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Two different tricks for fast LLM inference
Anthropic and OpenAI both recently announced “fast mode”: a way to interact with their best coding model at significantly higher speeds. These two versions of…
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Netboot Windows 11 with iSCSI and iPXE
Notes on installing and netbooting Windows 11 over iSCSI
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ReactOS 0.4.5 Released
ReactOS is a free, opensource reimplementation of windows
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SPI Flash
SPI Flash reader built from a Teensy or Arduino
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Immutable Software Deploys Using ZFS Jails on FreeBSD
An article demonstrating immutable software deployments using ZFS snapshots and FreeBSD jails, with Caddy as a health‑checked reverse proxy for zero‑downtime upgrades.
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Speeding Up Ruby with Shared Strings
It’s not often I am able to write a patch that not only reduces memory usage, but increases speed as well. Usually I find myself trading memory for speed, so it’s a real treat when I can improve both in one patch. Today I want to talk about the patch I submitted to Ruby in this ticket. It decreases “after boot” memory…
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How I ended up writing a new real-time kernel (2015)
You're reading the original article in English. You can as well read the translation in Russian .
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In search of 2.11BSD, as originally released
In Search of 2.11BSD, as released Almost all of the BSD releases have been well preserved. If you want to find 1BSD, or 2BSD or 4.3-TAHOE BS...
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How to drop 10M packets per second
Internally our DDoS mitigation team is sometimes called "the packet droppers". When other teams build exciting products to do smart things with the traffic that passed through our network, we take joy in discovering novel ways of discarding it.
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I uncovered an ACPI bug in my Dell Inspiron 5567. It was plaguing me for 8 years
Imagine you close your laptop lid to put it to sleep, but instead of pausing, it reboots. Not every time, just often enough to be infuriating. You try to save your work, but the machine decides to start over.
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The evolution of Unix architecture in two diagrams
Today I put online two diagrams depicting the architecture of the Unix operating system , one for the 1972 First Research Edition and one for FreeBSD, one of its direct descendants. Here are the details on how I created these diagrams.
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The MiniPC Revolution
Reasons why you should consider breaking your hardware up into MiniPCs.
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Docker on MacOS is slow and how to fix it
Note 05/01/2025: Hello there, you can find an update version of this article here, with the latest findings, improvements and new tools. This is how a Docker container feels inside a macOS environment: lost at sea, far from the coast. With this article I will try to bring this poor container safely to the coast. TL;DR…
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Unikernels are secure
Per Buer is the CEO of IncludeOS . IncludeOS is a clean-slate unikernel written in C++ with performance and security in mind. Per Buer is the founder and previous CEO/CTO of Varnish Software.
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Fedora 42 Beta
Discover Fedora 42 Beta: New AI-focused features for modern application development
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Counting cycles and instructions on the Apple M1 processor
When benchmarking software, we often start by measuring the time elapsed. If you are benchmarking data bandwidth or latency, it is the right measure. However, if you are benchmarking computational tasks where you avoid disk and network accesses and where you only access a few pages of memory, then the time elapsed is…
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CPU cache-friendly data structures in Go
False sharing, AoS vs SoA, random access, branch prediction: re-measured with go test -bench on two machines. Some claims held, some didn't.
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Manticore 6.0.0 – a faster alternative to Elasticsearch in C++
Today, the Manticore team is thrilled to announce the release of Manticore Search 6.
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Linux on the Atari Jaguar
The challenges around porting Linux to an old videogame console by Atari
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Jepsen: Redpanda 21.10.1
Redpanda is a Kafka -compatible distributed streaming system based around append-only logs. Compared to Kafka, Redpanda aims to offer users lower latencies and reduced operational complexity. It uses the Raft consensus algorithm internally, rather than depending on a separate installation of Zookeeper . Redpanda…
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Writing a Unix Shell
Building your own UNIX shell in parts. This post focuses on the semantics of the fork system call.
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Ruby 3.3's YJIT: Faster While Using Less Memory
This year, the YJIT team has been working hard to improve and optimize YJIT. We’re proud to say that the version of YJIT to be included with Ruby 3.3 is leaps and bounds ahead of Ruby 3.2’s. It provides better performance across the board, while also warming up faster and using less memory. The 3.3 release is also…