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Multiperspective Diagramming – A guide for system engineers
A multiperspective diagramming guide for system, software, cloud, network, and other engineers.
New
The latest blog posts to take off on Hacker News. 1,517 posts.
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Go’ing Insane: Endless Error Handling
I’ve been using Go for a few years now, mostly in my open source project Lazygit. In my day job I use Ruby and Typescript, and I’ve also spent some time with Rust. Each of those languages have design quirks that can grind a developer’s gears, and although my own precious gears have been ground by every language I’ve…
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How to Crawl the Web with Scrapy
How to use the python web scraping framework Scrapy to crawl indeed.com. Learn data engineering strategies for getting actionable insights from public information.
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Functional programming is not popular because it is weird (2016)
I’ve seen people be genuinely puzzled about why functional programming is not more popular. For example I’m currently reading “Out of the Tar Pit” where after arguing for fu…
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Ship / Show / Ask: A modern branching strategy
Ship/Show/Ask is a branching strategy that helps teams wait less and ship more, without losing out on feedback.
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Minimal APIs at a glance in .NET 6
David Fowler doesn't have a blog. I think the psychic weight of having a blog ...
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Reverse-Engineering Apple Dictionary (2020)
Personal webpage of Fabian Mentzer.
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I got the J language working on OpenBSD
Yes, I am aware that I am interrupting our self-hosting PL/0 compiler series but I think it will be worth it. Earlier today, I got the J language system running on OpenBSD . I find it important to write these up, because it helps me preserve my own knowledge of what I did and hopefully it will help others porting…
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What Java Modules Are About
When the subject of Java modules comes up in online discussions every so often, I get the sense that many people misunderstand what it is that modules are supposed to do. That's understandable, as the name 'modules' does not evoke the precise purpose of the feature. There are many kinds of modules, even in the Java…
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Index bloat reduced in PostgreSQL v14
This article describes how PostgreSQL v14 reduces B-tree index bloat with "bottom-up index tuple deletion". A test case shows the difference.
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Coalton: How to Have Our (Typed) Cake and (Safely) Eat It Too, in Common Lisp
By Robert Smith, Elias Lawson-Fox, Cole Scott Updated July 1, 2025 by Robert Smith. Introduction Coalton is a statically typed functional programming language built with Common Lisp. We can load it like a normal Lisp library. CL-USER> (asdf:load-system "coalton") CL-USER> (in-package #:coalton-user) COALTON-USER> This…
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I want a better shell (2019)
I want a better shell.
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JSON Schema bundling formalised
JSON Schema
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The Future Shape of Ruby Objects
These are the notes for a talk I gave at RubyKaigi 2021, which is why they’re written as if we were talking and going through some slides and code together.
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Thoughts on Clojure UI framework
Ideas and inspirations for new Clojure framework for desktop apps
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Native Rust Support on Cloudflare Workers
Introducing the Cloudflare Workers Rust SDK: write your entire Worker in Rust, no JavaScript required.
471
60x speed-up of Linux “perf”
The tool is great, but it uses perf to record and analyze profile data, and perf on Debian has a performance problem : when not linked against libbfd , it shells out to addr2line for every address it needs to look up. Thousands and thousands and thousands of incredibly short-lived processes.
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An Introduction to Type Level Programming in Haskell
Learn about type level programming by building a custom theming engine.
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How We Went All In on sqlc/pgx for Postgres and Go
Touring the ORM and Postgres landscape in Go, and why sqlc is today’s top pick.
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GitHub Actions limitations and gotchas
I’ve been leading a team at my dayjob to migrate every engineering team to GitHub Actions (GHA)
475
Pedalboard: Spotify’s Audio Effects Library for Python
We’ve just open sourced , Spotify’s framework for adding effects to audio in Python. Pedalboard makes it easy to use studio-quality audio effects in your code, rather than just in your digital audio workstation (DAW).
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Maintain It with Zig
No matter what language you program in or what applications you use: everything you do with a computer today is powered at some level by a piece of C/C++ code.
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Rust programs written entirely in Rust
A blog by sunfishcode
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Fans of a 2013 Japanese soccer game tracked down a bizarre floating point bug
Many gaming communities over the years have reached out to thank emulator developers for their efforts. Emulators are an important part of many classic game communities and give players access to features like netplay multiplayer, modding, and savestates, while also opening up the doors to enhancements not possible on…
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Bit Patterns of Float
I’ve spent too many hours repeatedly trying to find this information on the Web. Time to write it down.
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Fast Rust Builds
It's common knowledge that Rust code is slow to compile. But I have a strong gut feeling that most Rust code out there compiles much slower than it could.