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600K concurrent HTTP connections with Clojure and http-kit
Edit(2013/1/29): http-kit is a event driven HTTP server & client for Clojure. It’s open source, https://github.com/http-kit
Topics /
Software Engineering
The most popular blog posts about software engineering on Hacker News. 21,842 posts.
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Optimizing a bignum library for fun
Can I make math operations run 100x faster on really, really big numbers?
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Tools I use: PyCharm / Idea plugins
List of all the plugins I use in PyCharm and Idea.
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Deno 2.9
`deno desktop` for building native desktop apps from web tech, first-class migration from npm/pnpm/yarn/Bun, CSS module imports, snapshot and parameterized testing, smaller `deno compile --bundle` binaries, and Node.js 26 compatibility.
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ImageMagick, four point perspective distortion in a video
Step 1) Download the video from Youtube using JDownloader . The best one was the original Japanese upload, The Game Awards 2014 å‡ºå±•æ˜ åƒ ã‚¼ãƒ«ãƒ€ã®ä¼èª¬ 最新作 , which is 720p. I saved this file as zelda_720p.mp4.
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How to Write a Book in Emacs (2015)
Writing a book is a time consuming process, and if you’re going to dedicate a year, or more, of your life to it, it makes sense to pick the best tool for the job. If you’re technically inclined – and if you use Emacs – then the choice is obvious.
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Reverse engineering and removing Pokémon GO’s certificate pinning
A deep dive into Pokémon GO’s certificate pinning.
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SQLite's documentation about its durability properties is unclear
Is SQLite durable by default? What settings guarantee durability? The documentation and even comments from its creator give conflicting answers.
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Orchestrating AI code review at scale
Learn about how we built a CI-native AI code reviewer using OpenCode that helps our engineers ship better, safer code.
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Foreign data wrappers: PostgreSQL's secret weapon?
EnterpriseDB (“EDB”), the leader in accelerating Postgres® in the enterprise, today announced its acquisition of Splitgraph, an early-stage disruptor that provides a Postgres compatible serverless SQL API for building data driven applications from hundreds of datasources. This move is seen as a meaningful step in…
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Revisiting the Fast Inverse Square Root – Is It Still Useful?
In 2005, id Software released the source code for their 1999 game Quake III Arena under the GPL-2 license. In the file code/game/q_math.c , there is a function for calculating the reciprocal square root of a number which at first glance seems to use a very peculiar algorithm:
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Unofficial Guide to Datomic Internals (2014)
This post is a compilation of publicly available information, Datomic docs and google group answers about Datomic internals. Intention is to help others understand implementation model and use Datomic more efficiently.
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Use Gröbner bases to solve polynomial equations
A self-contained introduction to Gröbner bases and solving polynomial systems
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How statically linked programs run on Linux
In this article I want to explore what happens when a statically linked program gets executed on Linux. By statically linked I mean a program that does not require any shared objects to run, even the ubiquitous libc . In reality, most programs one encounters on Linux aren't statically linked, and do require one or…
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Terminals Are Weird
Terminals 1 are quite weird. Most modern users assume that they can just have straightfoward keybindings. Right? To bind Ctrl+i to something, they listen for Ctrl+i in their application. If they want to bind Ctrl+Shift+i to something different, they certainly can, they just listen for Ctrl+Shift+i as well. Naturally…
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HermiTux: A Binary-Compatible Unikernel
A binary-compatible unikernel
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Infinite Context LLMs: Going Beyond RAG with Extended Minds
In this blog we discuss how the transformer architecture naturally extends over external memories, and share empirical results which leverage this capability. These methods are innate (don't require fine tuning) and outperform popular retrieval augmented generation methods.
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Getting Started with Functional Programming in F#
Video presentation by Reid Evans on Getting Started with Functional Programming in F#. Here are my takeaways and thoughts on this great talk.
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Nash equilibria in Ballmer's binary-search interview game
Yesterday John Graham-Cumming posted about “Steve Ballmer’s incorrect binary search interview question,” and in the Hacker News discussion, among the predictable “interview culture is flawed!!” complaints, there was some discussion of whether binary search was even the right way to solve Ballmer’s puzzle. Here’s a…
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Pivot – Rows to Columns
Pivot SQL tables with CASE or FILTER. Turn rows into columns for the entity-attribute-value model (EAV).
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I learned Snobol and then wrote a toy Forth
This page is a mini-site for my Snobol excursion with links to separate pages for my:
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On compiling 34 year old C code
The 34 year old C code is the C code for ed and sed from Unix Version 7. I’ve been getting it to compile on a modern POSIXish system. Some changes had to be made. But not very many. The union…
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Building a Game with the Real Engine
Some people make games using the Unreal Engine. That’s nice, but I wanted something a little different. That’s why I’m using the Real Engine.
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SDL2 common mistakes and how to avoid them
SDL has grown on me over the past year. I didn’t understand its value until viewing it in the right lens: as a complete platform and runtime replacing the host’s runtime, possibly including libc. Ideally an SDL application links exclusively against SDL and otherwise not directly against host libraries, though in…
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JetBrains IDE Remote Code Execution and Local File Disclosure
TL;DR From at least 2013 until May 2016 JetBrains' IDEs were vulnerable to local file leakage, with the Windows (EDIT: and OS X) versions …