Klaus Aschenbrenner
@sqlpassion.at
Senior Database Administrator in the Online-Gambling industry. SQL Server & PostgreSQL specialist during the day. Astrophotographer during the night. Triathlete in between. Loves low-level system programming in Rust.
Over the last 6-8 hours (spread across 3 days), I’ve vibe-coded a Home Assistant dashboard that displays data from our photovoltaic system, collected via Modbus over the local TCP/IP network. Home Assistent runs on my old Odriod-H2 Mini-PC from the year 2018...
Working with multiple sub-agents across multiple GitHub issues in parallel - works like a charm :-)
I tried to adapt the transcript of my video "Being Linus Torvalds" into an english language blog post here: antirez.com/news/171
Being Linux Torvalds - <antirez>
antirez.com
What actually happens inside an LLM after you press enter? Our blog post maps out the mechanical journey of a prompt through the forward pass. 👉 www.exoscale.com/blog/llm-fro... . . . #AI #LLM #inference
Can PostgreSQL perform multi-block reads to reduce system calls? Yes, it's coming in PG19 with IO combine prefetching. What about TOASTed documents? Here's a new blog post: dev.to/franckpachot...
Multi-block buffered reads in PostgreSQL 19 (IO combine & prefetch)
PostgreSQL scans operate at the page level: the buffer manager fetches one 8 KB page (BLCKSZ) at a...
dev.to
I have now a full-blown working UEFI boot path in my OS - incl. a simple AHCI driver to access the SATA based SSD drive with its FAT32 ESP partition. 100% pure Rust code (not a single asm file!), without any dependencies to other crates! #rust #rustlang #x64 #computerscience
How to escape the heat wave? Starting a 100K “red eye” bike ride at 05:00am in the morning… 😴😴😴
My prediction: when you don't incorporate AI into your daily workflow, you will not be needed anymore in the software industry within the next 12 - 24 month.
It's the 1st time in my life that I've implemented my own UEFI loader - entirely in Rust - without any external dependencies. #Rust #rustlang #computerscience
I have migrated now my whole x64-based OS entirely to Rust. There is NO single line of C code anymore - just a few pure assembly files! In addition, I'm also providing a VScode based Dev-Container, with which you can even build and run the OS in your browser! #rust #rustlang #osdev #computerscience
Finished the first bicycle race of my life: the „Dolomitenradrundfahrt“ in East-Tyrol. 110km with 1700m ascent! 🥵 4:19h, and the 96th place (out of 153 participants) within my age group! 💪
What could go wrong, if you have to safeguard a new LLM (Claude Fable 5) for cybersecurity, biology and chemistry related prompts... www.anthropic.com/news/claude-...
Claude Fable 5 and Claude Mythos 5
Today we’re launching Claude Fable 5: a Mythos-class model that we’ve made safe for general use.
anthropic.com
What a day: finished my 1st Aqua Bike competition. 53th out-of-water (the last one!), and finished after the bike split at the 26th place - in 3:48h! 💪
This is one of the most balanced critiques of AI I've read so far. "Reviewing AI output all day without the dopamine of creation is not a sustainable job description." tomwojcik.com/posts/2026-0...
What AI coding costs you | Tom Wojcik
What's the effect of the prolonged AI usage among coders and is it tracked correctly, if it all?
tomwojcik.com
Max Schrems ist ein Jurist, der mit seinem Einsatz für Datenschutz- und Grundrechte international höchst erfolgreich war. Peter Steinberger reitet eine Bubble, die uns derzeit alle mit einem ganzen Bündel gefährlicher Probleme konfrontiert. Österreichische Medienpolitik so:
We released DuckDB v1.5! This release comes with a “friendly CLI” client, a new (opt-in) PEG parser, support for VARIANT types and many lakehouse features. It also ships a new network stack, a reworked geospatial extension, Azure writes and an ODBC scanner. Read more at duckdb.org/2026/03/09/a...
[VLDB '25] MD-MVCC: Multi-version Concurrency Control for Schema Changes in Azure SQL Database www.vldb.org/pvldb/v... A great discussion of the end-to-end impact of allowing multiple versions of schema metadata information to be live concurrently, in a real, production system.
New blog post: "GNU and the AI reimplementations" antirez.com/news/162
GNU and the AI reimplementations - <antirez>
antirez.com
It's so "funny" when #ChatGPT hallucinates about SQL Server 2025 feature internals, which are not documented anywhere. And then it says "sorry", because it delivered garbage to you... #StrangeNewWorld
CoPilot in SSMS reads from my database/sql server instance, but doesn't show me any executed queries. This is *so* dangerous for your production data - CoPilot could just pass some of your sensitive data to the LLM provider... #ai #llm #datasecurity #gdpr
[Blog] Don’t Miss Out – SQL Server 2025 Unleashed Training Starts Next Monday! www.sqlpassion.at/archive/2026... #sqlserver #performance #ai #vector #hadr
Don’t Miss Out – SQL Server 2025 Unleashed Training Starts Next Monday! – SQLpassion
sqlpassion.at
When my MacBook Air M3 24 GB outperforms my AMD Ryzen system (128 GB RAM) with a RTX 3080Ti GPU for local LLM inference. The Unified Memory architecture rocks! 💪