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The case of a program that crashed on its first instruction
Didn't even make it out of the gate.
New
The latest blog posts to take off on Hacker News. 1,535 posts.
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We built a self-healing system to survive a concurrency bug at Netflix
Our CPUs were dying, the bug was temporarily un-fixable, and we had no viable path forward. Here's how we managed to survive.
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Desktop icons are surprisingly hard
I spent past three weeks working on refactoring and fixing legacy code…
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Rust for tokenising and parsing
Macros, iterators, patterns, error handling and match make Rust almost perfect
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Rails 8.0 Released
Deploying modern web apps – with all the provisions needed to be fast and secure while easily updateable – has become so hard that many developers don’t dare do it without a PaaS (platform-as-a-service). But that’s ridiculous. Nobody should have to pay orders of magnitude more for basic computing just to make…
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I'm not mutable, I'm partially instantiated
Incomplete data structures challenge our notion of mutability
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Bringing Faster Exceptions to Rust
Three months ago, I wrote about why you might want to use panics for error handling. Even though it’s a catchy title, panics are hardly suited for this goal, even if you try to hack around with macros and libraries. The real star is the unwinding mechanism, which powers panics. This post is the first in a series…
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Visualizing binary files with ImHex's DSL, the "pattern language"
Viewing my binary file with ImHex. The pattern language pane, on the right,...
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Upcoming Hardening in PHP
Personal blog of Julien (jvoisin) Voisin
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Monorepo – Our Experience
Nine months ago, we switched to a monorepo. Here's a detailed look at what led to the change, how we approached it, and what the experience has been like.
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What has case distinction but is neither uppercase nor lowercase?
It has one foot in each world but belongs to neither.
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All the data can be yours: reverse engineering APIs
I’ve built a lot of unofficial software for my schools, Brown University and previously Macalester College. To name a few: an “everything app” called 75grand with dining hall menus, Moodle assignments, building hours, an event calendar, and more; two unfinished course catalogs; and a university shuttle tracker. None…
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Tracker Beeper (2022)
A week ago, I finally got round to implementing an idea I’d been toying with for years: what if your computer made a little bit of noise every time it sent data to Google? From studying logs, I’d long known just how many sites send all your visits and clicks to (at least) Google, but a log that you have to manually…
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State of Python 3.13 performance: Free-threading
Python 3.13 is out and it's time to run some benchmarks to see how well it performs with the new free-threaded mode.
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Zig's (.{}){} Syntax
A look at some unfriendly Zig syntax
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Low-poly image generation using evolutionary algorithms in Ruby (2023)
A deep dive into evolutionary algorithms through the lens of low-poly image generation. This exploration covers genetic algorithm theory, custom Ruby implementation using the Petri Dish framework, and detailed analysis of genetic operators including roulette wheel selection, random midpoint crossover, and nudge…
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Blog Writing for Developers (2023)
Writing is one of the most powerful forms of communication, and it’s useful in a multitude of roles and contexts. As a blog-writing , documentation-authoring , twitter-shitposting DevEx engineer I spend a lot of my time writing. Recently, someone paid me a very nice compliment about a blog I’d written and asked how…
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Writing secure Go code
Security testing starts with understanding vulnerabilities. The CVE website lists known software flaws. The OWASP Top Ten highlights common weaknesses. With this knowledge, we can improve our Go development. This article shows how to put in place robust practices. They are fuzz inputs, verify dependencies, and use…
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What Every Developer Should Know About GPU Computing (2023)
A primer on GPU architecture and computing
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Limitations of frame pointer unwinding
Explore 3 limitations of using frame pointers for stack unwinding and profiling in Linux that are often overlooked, plus possible future alternatives.
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Do you need Redis? PostgreSQL does queuing, locking, and pub/sub (2021)
It's a common architecture to have PostgreSQL and Redis serve as the backbone of your app, but PostgreSQL may be capable of everything you use Redis for.
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Hacking cars in JavaScript (Replay attacks in the browser with the HackRF)
Collection of side projects, conference talks and blog posts experimenting with frontend technologies and human-computer interaction
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Next Generation Out of Band Garbage Collection
In this post we look at the impact of a new feature of Ruby 3.4 on Shopify’s monolith.
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Venvstacks: Virtual Environment Stacks for Python
An open source utility for packaging Python applications and all their dependencies into a portable, deterministic format based on Python's `sitecustomize.py`.
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Rewrite It in Rails
In 2022 I started building an application for creating Customs declarations. After evaluating some options and writing code in various programming languages ...
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Implementing a Tiny CPU Rasterizer
This is a tutorial series on implementing a basic CPU rasterization engine in C++ from scratch. No GPU involved, just drawing pixels with our bare hands, emulating what the GPU usually does for us.
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Org Mode Syntax Cheat Sheet (2017)
I’m a keen user of Emacs and Org mode for a variety of tasks, including note taking, generating documents for exporting to LaTeX, Word, or html. creating blog posts (notably for this blog, us…
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Lisp Query Notation (LQN)
Query language and terminal utility for transforming various data formats