Space Tech
Space Tech
Space Tech
Computational Complexity
A Common Proof of the Riemann Hypothesis and the Collatz Conjecture
Query Planning
Christophe Pettus: All Your GUCs in a Row: autovacuum_analyze_scale_factor and autovacuum_analyze_threshold
Autovacuum's ANALYZE threshold formula combines a fixed floor and a percentage of table size.
Uber
Am I the only one who hates delivery robots?
AI Psychosis
When Dawkins met Claude – Could this AI be conscious?
Haskell
A Couple Million Lines of Haskell: Production Engineering at Mercury
Dabbling in Erlang, part 2: A minimal introduction (2013)
Kubernetes
Blocking Copy Fail (CVE-2026-31431) in Kubernetes with Tetragon
Embedded Systems
Haptic compass belt (2023)
AI Psychosis
The Claude Delusion: Richard Dawkins believes his AI chatbot is conscious
Voice-AI-for-Beginners – A curated learning path for developers
AWS Lightsail's $0.09/GB Bandwidth Overage Is a Trap for Small Projects
EVs and Transportation
Chinese EVs Can Now Project Movies from Their Headlights
Meta
Meta faces New Mexico trial that could force change to Facebook, other platforms
EVs and Transportation
Tesla owner won $10k in court for Tesla's FSD lies. Tesla is still fighting him
Large Language Models
Using group theory to explore the space of positional encodings for attention
Clojure
Clojurists Together – Q2 2026 Open Source Funding Announcement
Intelligence Dissolves Privacy
Apple
Apple raises Mac Mini starting price $599 to $799, 256GB storage discontinued
The agent harness belongs outside the sandbox
Show HN: State of the Art of Coding Models, According to Hacker News Commenters
Six Years Perfecting Maps on WatchOS
C++
A Physics Engine with Incremental Rollback for Multiplayer Games
Browser Internals
This Month in Ladybird - April 2026
Google
Farewell, Jeeves: Ask.com shuts down
Show HN: Rust library for Undo/Redo using deltas, snapshots or commands
Homelab & Self-Hosting
I Do Not Recommend Bitwarden
Modern C++ Programming: Busato
AI Psychosis
Richard Dawkins and The Claude Delusion: The great skeptic gets taken in
Statistics and Probability
The Dunning-Kruger effect is probably just from bimodal skill distributions
Reverse Engineering
Welcome to Hell Developer
Observability
Do_not_track
C++
Unsigned Sizes: A Five Year Mistake
Christophe Pettus: wal_sender_shutdown_timeout: Now Actually a Timeout
If you have ever run pg_ctl stop -m fast on a primary and watched it hang well past wal_sender_shutdown_timeout, you have met a bug that has been sitting in walsender.c for years. As of commit c0b24b3 on master (Fujii Masao, May 1, reported by Andres Freund via FreeBSD CI), it is fixed. PostgreSQ…
Information Theory
Also-RANS: Asymmetric Numeral Systems for Entropy Coding
AI Coding Tools
Flue is a TypeScript framework for building the next generation of agents
EVs and Transportation
California to begin ticketing driverless cars that violate traffic laws
NetHack 5.0.0
MySQL
Migrating Etsy’s database sharding to Vitess
Etsy has maintained a sharded MySQL architecture since around 2010. This database cluster contains most of Etsy’s online data and is made up of ~1,000 tables distributed across ~1,000 shards. Over the last 16 years, it has grown significantly: combined, these tables have over 425 TB of data and receive roughly 1.7 million requests per second. Etsy engineers access our MySQL data through a proprietary object-relational mapping (ORM). The ORM has a corresponding model for each MySQL table. W...
Artificial Intelligence
Making Ads Count: Using MMoE and Auxiliary Tasks to Better Connect Buyers & Sellers
When buyers search on Etsy, they need to quickly and easily find the perfect item. At the same time, sellers need to be confident their unique products are being seen by the right customers. Our Ads Search ranking model, which is built on a multitask learning foundation, is the critical link in this connection. Recently, we identified an opportunity to drive more meaningful buyer engagement by enhancing our model’s ability to predict purchase intent. We achieved this via a dual-pronged impr...
Meta's Pyrefly sabotages competing Python extensions without telling you
Inventions for battery reuse and recycling increase more than 7-fold in last 10y
Exploit Development
An ansible playbook to mitigate the copy-fail vulnerability
Automating Hermitage to see how transactions differ in MySQL and MariaDB
Martin Kleppmann's Hermitage project categorizes the behavior of transaction isolation levels in major SQL databases, but many results haven't been updated in over a decade. And MariaDB has diverged significantly from MySQL since then.
Why IPv6 is so complicated
OpenAI
The best AI dictation apps, tested and ranked
Large Language Models
LLMs consistently pick resumes they generate over ones by humans or other models
America's Expanding Domestic Surveillance
Barman – Backup and Recovery Manager for PostgreSQL
Prompt Engineering
Refusal in Language Models Is Mediated by a Single Direction
AI Hardware
Mini PC for local LLMs in 2026
AI Psychosis
Thoughts on Historical Language Models and Talkie-1930
xAI
Beyond Lovable and Mistral: 21 European startups to watch
Parquet and columnar formats
Have Your Iceberg Cubed, Not Sorted: Meet Qbeast, the OTree Spatial Index
Mathematics
David Bessis on AI destroying mathematics
Meta
Russia Poisons Wikipedia
AI Psychosis
Becoming a father shrinks your cerebrum
Show HN: Pollen – distributed WASM runtime, no control plane, single binary
AI Psychosis
This Personality Trait Makes Dreams More Bizarre, Scientists Discover
Scientists analyzed thousands of self-reported dreams and discovered that our sleeping visions are influenced by personality traits and external events, such as the pandemic.
Open Design: Use Your Coding Agent as a Design Engine
Testing Vue components in the browser
Hello! One of my long term projects on here is figuring out how to write frontend Javascript without using Node or any other server JS runtime. One issue I run into a lot in my frontend JS projects is that I don’t know how to write tests for them. I’ve tried to use Playwright in the past, but it felt slow and unwieldy to be starting these new browser processes all the time, and it involved some Node code to orchestrate the tests. The result is that I just don’t test my frontend code whi...
The Century-Long Pause in Fundamental Physics
Homelab & Self-Hosting
Screw you Realtek
Dotcl: Common Lisp Implementation on .NET
AGI and AI Safety
The AI Race Is Charged by the Fear of Being Left Behind
Artificial Intelligence
Show HN: Mljar Studio – local AI data analyst that saves analysis as notebooks
Project Wycheproof tests crypto libraries against known attacks
AI Hardware
How fast is a macOS VM, and how small could it be?
Shadcn/UI: A set of beautifully designed components that you can customize
Search Engines
Show HN: Large Scale Article Extract of Newspapers 1730s-1960s
Show HN: DAC – open-source dashboard as code tool for agents and humans
Microsoft
Why are there both TMP and TEMP environment variables, and which one is right?
Open source ballistic simulator with NASA SRTM terrain masking (Python/C#)
SKILL.make: Makefile Styled Skill File
Bitmap and tilemap generation from a single example
Apache Kafka
What is Apache Kafka and how does it work?
Network Security
NSA Warned Everyone to Reboot Their Routers
Show HN: Hollow is an open-sourced self-modifying agentic system
I got infected with a crypto-miner via misconfigured qBittorrent
Rust