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Mathias Lafeldt

@mathias.blog

Indie product engineer obsessed with dev tools, performance & AI. Maintainer of duckdb-rs & duckdb-go. Zig-pilled. ⚑️ πŸ”— mathias.blog

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28.10.2024
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Latest posts by Mathias Lafeldt @mathias.blog

Preview
AI And The Ship of Theseus Slopforks: what happens when a library gets rewritten with AI?

Did you ask him about lucumr.pocoo.org/2026/3/5/the... by chance? πŸ˜€

06.03.2026 08:39 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Even better: using Claude's AskUserQuestion tool and including the release post in the commit message

06.03.2026 08:04 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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How to update Rust with style

Not shown here: auto-fixing of all issues introduced by the update

06.03.2026 07:50 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Markdown, llms.txt and AI crawlers Dries is the Founder and Project Lead of Drupal and the Co-founder and Executive Chair of Acquia.

"No AI crawler uses content negotiation. Not one... Apparently Cloudflare didn't get the memo, or they know something I don't, because in February Cloudflare announced Markdown for Agents" πŸ€”

dri.es/markdown-llm...

05.03.2026 19:52 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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AI And The Ship of Theseus Slopforks: what happens when a library gets rewritten with AI?

chardet was vipeforked to MIT and I have thoughts about it. Spoiler: I like it. lucumr.pocoo.org/2026/3/5/the...

05.03.2026 15:30 πŸ‘ 50 πŸ” 12 πŸ’¬ 10 πŸ“Œ 5

How many of those AI vs. craftsmanship posts do we still have to endure? As if it were 100% one or the other.

05.03.2026 11:32 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

It is amazing how many companies I talk to STILL have AI effectively blocked by IT & legal departments for out-of-date reasons when many companies in regulated industries have figured out ways to deploy enterprise ChatGPT, Claude & Gemini (including CLIs like Code) without any apparent problem.

05.03.2026 01:39 πŸ‘ 85 πŸ” 9 πŸ’¬ 10 πŸ“Œ 3

Boy, is Codex Spark fast!

I heard the other day that they had to slow it down a bit for updates in the Codex app to stream smoothly.

05.03.2026 09:04 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Good to be back

03.03.2026 14:41 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

So bad? Started using it again this week after being out sick for 2 weeks. Haven't noticed anything (too) bad yet.

03.03.2026 10:01 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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[BUG] claude update always downloads latest binary Β· Issue #30332 Β· anthropics/claude-code Preflight Checklist I have searched existing issues and this hasn't been reported yet This is a single bug report (please file separate reports for different bugs) I am using the latest version of ...

I always wondered why `claude update` is so slow. Asked Codex to debug it. Turns out that the latest binary is downloaded every single time. πŸ™ˆ

github.com/anthropics/c...

03.03.2026 09:00 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Renamed the script to claude-status

github.com/mlafeldt/dot...

03.03.2026 08:22 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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In light of today's outages, I wrote a small script that I run as part of my Claude Code wrapper to learn about current Claude incidents.

github.com/mlafeldt/dot...

02.03.2026 17:22 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Mitchell Hashimoto’s new way of writing code Mitchell Hashimoto on building HashiCorp, navigating the cloud giants, and how AI agents have transformed his day-to-day engineering workflow.

Mitchell Hashimoto’s new way of writing code β€’ Mitchell Hashimoto on building HashiCorp, navigating the cloud giants, and how AI agents have transformed his day-to-day engineering workflow.

25.02.2026 16:45 πŸ‘ 4 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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Matt Pocock Become an AI Hero with tips, tricks and tutorials. We don't do vibe coding - this is a channel for real engineers solving real problems.

If you like short non-hypey videos about agentic coding, you should check out Matt's YT channel.

www.youtube.com/@mattpococku...

02.03.2026 09:36 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

ChatGPT says about $106?

01.03.2026 08:53 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Definitiv Ghostty. Bald soll auch endlich Scrollback Suche kommen, was ich als einziges Feature manchmal vermisse.

28.02.2026 09:40 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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registerspill.thorstenball.com/p/joy-and-cu...

27.02.2026 08:37 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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1.800 Kunden: Wie Andreas Wittig mit seinem Bruder vier AWS Marketplace Produkte und mehr betreibt (#160) In Folge 160 spreche ich mit Andreas Wittig, der zusammen mit seinem Bruder Michael seit elf Jahren die widdix GmbH betreibt – zu zweit, ohne Angestellte, mit 1.800 Kunden weltweit. Die beiden haben s...

Die wohl bekanntesten AWS Consultants Deutschlands haben den (Ab)sprung ins Product Business geschafft. Und es freut mich sehr. @andreaswittig.bsky.social

happy-bootstrapping.podigee.io/160-1-800-ku...

26.02.2026 14:55 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

This is an interesting side effect of what @chadfowler.com proposes as Phoenix architecture.

25.02.2026 17:38 πŸ‘ 1 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Tests Are The New Moat | Daniel Saewitz As AI becomes better at cloning people's open source work, what ends up becoming most valuable are software contracts, tests, and API surface area. This clashes the incentives of clearly defining your...

New post! Tests Are The New Moat

saewitz.com/tests-are-th...

24.02.2026 22:34 πŸ‘ 63 πŸ” 8 πŸ’¬ 5 πŸ“Œ 3

How do you combine both?

25.02.2026 13:05 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

It's strange they didn't name the model, and that the author refers to himself in the third person before switching to first person at the end. Still promising if it holds up.

25.02.2026 13:02 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Noticing a pattern: Peter Steinberger, Mario Zechner, Armin Ronacherβ€”all Austrian, all shaping core AI and dev tools. Coincidence, or something in the water?

25.02.2026 12:56 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

@chadfowler.com One thing I noticed while reading through your series: doesn't aicoding.leaflet.pub/3mcxo5ojob22c say the exact opposite of aicoding.leaflet.pub/3maob46kbz22v about the regeneration (pace) of UI vs backend components?

20.02.2026 16:41 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Am I the only one for whom the mobile layout is broken?

18.02.2026 12:49 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Congrats. 50+ points is good!

18.02.2026 11:39 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Book cover of "Designing Data-Intensive Applications, 2nd edition". It has a similar wild boar on the cover as the first edition, but it uses O'Reilly's new cover design, and the boar is now slightly colourised.

Book cover of "Designing Data-Intensive Applications, 2nd edition". It has a similar wild boar on the cover as the first edition, but it uses O'Reilly's new cover design, and the boar is now slightly colourised.

The second edition of Designing Data-Intensive Applications, by myself and @chris.blue, is finished and sent off to the printers! Ebooks should be available in the next week, and print books in 3–4 weeks. Sigh of relief. πŸ˜…

(BTW, this is a good opportunity to support your favourite local bookshop!)

18.02.2026 11:09 πŸ‘ 669 πŸ” 140 πŸ’¬ 27 πŸ“Œ 19
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Fast Software Was trΓ€gst du bei?

Β»SpΓ€ter Vorsatz fΓΌr 2026: Weniger daran denken, was die AI tut, wenn ich schlafe. Und mehr daran, was ich tue, wenn ich wach bin.Β«

gregorschmalzried.blog/p/fast-softw...

18.02.2026 09:42 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Hast du dich damals von Bonko verzaubern lassen oder kam das spΓ€ter?

14.02.2026 16:39 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0