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Michael Simons

@rotnroll666@mastodon.social
mastodon 4.6.0-nightly.2026-03-19

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and #DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @neo4j@mastodon.social in the broader Java ecosystem.

You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures.

Published in 2024: https://www.manning.com/books/duckdb-in-action

0 Followers
0 Following
Joined October 30, 2022
michael-simons.eu:
http://michael-simons.eu
Blog:
https://info.michael-simons.eu
GitHub:
https://github.com/michael-simons
Sport:
https://biking.michael-simons.eu

Posts

rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · 1d ago

I am dying laughing… If if were not sad…

> The entire F-35 doctrine, the single most expensive weapons programme in human history, rests on the assumption that the aircraft is invisible to radar. Someone forgot to tell the Iranians the planes were invisible.

https://no01.substack.com/p/march-19-21-god-is-a-comedian

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rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · 1d ago

The thought that #Anthropic or #OpenAI won’t squeeze out the maximum possible margin from their services and products the same way #Broadcom is doing it now with #VMWare services and products is pretty absurd. Its impact though will be much, much higher. #AI #AIDict

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rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · Mar 14, 2026

Yes. No more `ST_FlipCoordinates` fun with #DuckDB 1.5.0.

https://codeberg.org/michael-simons/sport/commit/81830dee4a2dba0dd26d8ef1c9176df7c589a89c

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rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · Mar 14, 2026

Somewhat reassuring that the DuckDB folks also make mistakes… https://github.com/duckdb/duckdb/issues/21278

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rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · Mar 14, 2026

Ach, was ein nettes Review. Das freut mich sehr.

https://www.sigs.de/artikel/ein-buch-zum-mitmachen-duckdb-in-action/

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rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · Mar 14, 2026

I remember having read that #ChuckSchuldiner of #Death having played once with #Mille from #Kreator. Sad that nothing really came from that. A musical and lyric crossover between #Symbolic and #ComaOfSouls would fit perfectly well into 2026.

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rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · Mar 14, 2026

Today I'll be upgrading a couple of things to #DuckDB 1.5 and yet again, the folks at @duckdb@mastodon.social provide a perfect way to adapt to a breaking change, here getting the order of x/y right:

- in 1.5 you can set geometry_always_xy = true to have xy in lat/long order, otherwise you get a warning
- in 2.0 not setting it, you get an error, but you can ofc use false to get <= 1.5 default behaviour
- in 2.1 make the new one the default

They did the same in 1.3 for lambda style.

https://duckdb.org/2026/03/09/announcing-duckdb-150#spatial-extension

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rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · Mar 14, 2026

RE: @schb@mastodon.social

Harte Wahrheit.

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rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · Mar 14, 2026

wtf Aachen es schneit?!

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rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · Mar 13, 2026

<- Adds Maven sortpom to a build, orders dependencies as it should be.

*build breaks

Nice confirmation.

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rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · Mar 13, 2026

Next case of saying the quiet part out load…

https://newrepublic.com/post/207693/palantir-ceo-karp-disrupting-democratic-power

> Palantir CEO Alex Karp thinks his AI technology will lessen the power of “highly educated, often female voters, who vote mostly Democrat” while increasing the power of working-class men.

So nice, bashing women and pretending he has anything remotely in common with working class.

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rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · Feb 20, 2026

Scott Shambaugh—one of the authors of matplotlib—got hold of the "soul.md" file that the "operator" of the "autonomous scientific coder" wrote for his #OpenClaw instance

https://theshamblog.com/an-ai-agent-wrote-a-hit-piece-on-me-part-4/

As I guessed last week already, encodified, toxic and fragile masculinity. Disgusting. Imaging such a person on your team.

Probably Scott has better things todo, but I sent him a message a couple of days ago in support.

#AI #Toxic #Brocult

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rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · Feb 15, 2026

Let that sink in. Even one of the loud and vocal AI proponents such as @simon@fedi.simonwillison.net admits

“I no longer have a firm mental model of what they can do and how they work, which means each additional feature becomes harder to reason about, eventually leading me to lose the ability to make confident decisions about where to go next.”

https://simonwillison.net/2026/Feb/15/cognitive-debt/

Not afraid of many things AI can inflict on my life, but I’m personally very much afraid of acquired helplessness such as this.

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rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · Feb 05, 2026

@oxyhyxo@mastodon.bsd.cafe @davidgerard@circumstances.run @cheetah_spottycat@toot.cat Irony is dead.

https://ghuntley.com/ralph/

https://github.com/snarktank/ralph

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Thread context 3 posts in path
Root a post on icy.wyvern.rip Open
on icy.wyvern.rip
Open ancestor post
Parent @octothorpe@mastodon.online Open
@octothorpe@mastodon.online
@volpeon@icy.wyvern.rip @catsalad@infosec.exchange yeah, without the ring it’s unrecognisable.
Current reply
rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · Jan 10, 2026
@octothorpe@mastodon.online @volpeon@icy.wyvern.rip @catsalad@infosec.exchange not true.
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Thread context 2 posts in path
Parent @Gargron@mastodon.social Open
@Gargron@mastodon.social
Today I am stepping down from my role as the CEO of #Mastodon. Though this has been in the works for a while, I can't say I've fully processed how I feel about it. There is a bittersweet part to it, a
Current reply
rotnroll666
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
Michael Simons
Michael Simons
@rotnroll666@mastodon.social

👨‍👩‍👦‍👦👨🏻‍💻🚴🏻 – Father, Husband, Developer, Athlete. Author of @springbootbuch and # DuckDB in Action, founder of @euregjug. Java champion working on various integrations of @ neo4j in the broader Java ecosystem. You can expect a mixture of tech (Java, GraalVM, databases), some politics, cycling and food pictures. Published in 2024: https://www. manning.com/books/duckdb-in-ac tion

mastodon.social
@rotnroll666@mastodon.social · Nov 18, 2025
@Gargron@mastodon.social you created something nice. This is the correct nice step. Good for the community, hopefully good for you. Way better than what other founders did, ultimately ending up so often in forks, feuds and anger.
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