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Christian Grobmeier

@grobmeier.de
654 followers 587 following 344 posts

Java Champion & ASF VP Data Privacy. I write and speak about code, ethics, and what it means to build systems that last. Logging Off? grobmeier.de

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Christian Grobmeier @grobmeier.de · 22/06/2026
Sometimes good things are very close
River in Landsberg am Lech. Peaceful, sunny atmosphere
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Christian Grobmeier @grobmeier.de · 30/10/2025
Stuck in SFO. Lufthansa cancelled the flight after 6 hours waiting. No hotel, no water, shops are closed. Currently 25h on my feet. 7 more until I can sleep in the aircraft. Disappointing
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Christian Grobmeier @grobmeier.de · 27/10/2025
GitHub Day 0. Agentic #AI is everywhere in the US. #opensource can benefit from it, this talk says. But the speakers also say, devs will not be replaced—just accelerated.
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Christian Grobmeier @grobmeier.de · 24/10/2025
I am currently in San Francisco to attend #Github Universe. So far, so good. I like the city.
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Christian Grobmeier @grobmeier.de · 27/02/2025
I guess you could say I am a power user now. However, some recommendations make my writing worse, not better.
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Christian Grobmeier @grobmeier.de · 24/02/2025
It feels good when something is finished, and I just finished the article for the new Javapro magazine. It's about the history of #Log4j. Proud of it. Needed a lot of chocolate. Not from #Java though, but #Japan :)
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Christian Grobmeier @grobmeier.de · 31/01/2025
This year is the year! After log4shell hit, I started again with #Java and #OpenSource related public talks. I want to take this more seriously and plan to travel through Germany and visit JUGs or conferences. Usually, I travel at my own expense to attend community talks. Feel free to get in touch.
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Christian Grobmeier @grobmeier.de · 28/01/2025
I grew up without books. No stories. No beautiful words. No education. At 16, I started to learn, and my now-wife, at 20, gave me her books. Today, at 46, it still hurts to look back. I am angry. My road was hard, far too hard. No one should have to walk on it.
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Christian Grobmeier @grobmeier.de · 26/01/2025
For two long years, I studied #writing, and I practiced it too. After all this time, I might not be a better writer, but I have learned that good writers are. While #AI reflects the average of us all, good writers transcend every limit.
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Christian Grobmeier @grobmeier.de · 20/01/2025
For my mental health, I usually refrain from commenting on politics. Today, I feel compelled to break this rule and speak out. In Germany, history revisionists yell their devoid phrases from the chancel, echoed by those who struggle with recent politics and are afraid of the future. 🧵 1/8
Me, while reading a book behind my desk.
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Christian Grobmeier @grobmeier.de · 17/01/2025
The feeling when you made your Rasperry blink the first time in your life… I have to admit, without the VS Codf extension I would have been lost. Step by step…
Rasperry Pico on the table
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Christian Grobmeier @grobmeier.de · 06/01/2025
Spent the past year working with Piotr on #Log4j. This turned into deep dives into #SBOM, VEX, and securing supply chains. In 2025, we’re building a #Maven-based tool to help #Java devs write more secure software. No funding. Let’s talk if your company’s wants to learn more about it or #OpenSource.
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Christian Grobmeier @grobmeier.de · 31/12/2024
In November, I was in Tokyo. I came across these muddy waters with dry, withered plants. They weren’t much to look at—ugly, even. But every year, from this dirt, a lotus grows again. If this year was tough for you, I hope the next brings something new. Have a great 2025.
A field of withered Lotus flowers standing in muddy waters.
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Christian Grobmeier @grobmeier.de · 27/12/2024
I gifted myself a new food processor. Turned out, the reason I never got into the smoothie thing was the bad device I had before. This one is a dream, using it two times a day. Next stop: oat milk.
Food processor filled with veggies and fruit
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Christian Grobmeier @grobmeier.de · 19/12/2024
I am getting started with hardware programming. In the pic is a fine dust sensor operated by Rasperry Pico. And no, I have no idea what I am doing.
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Christian Grobmeier @grobmeier.de · 19/12/2024
In Germany, when we do business, we are forced to join groups like the IHK. They never did anything for me, except taking an insane amount of money - and sending me their useless paper. This time, wrapped in plastic. 🤷‍♂️
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Christian Grobmeier @grobmeier.de · 13/12/2024
I work a lot, but I reflect just as much. It's not esoteric, but personal practice to review what I’ve done and how to improve. While I’ll have less time to reflect (I'm in London), I’ll make it count. What helps me reflect is ‘smoking out’ my room with incense. #MindfulCoding #Raunächte
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Christian Grobmeier @grobmeier.de · 12/12/2024
Pull request reviews are like group therapy in the best case, like group insanity in the worst. Kindness lets you resolve both cases. December 12 #ZenDevAdvent Image: Unsplash #git #pullrequests #programming
Unsplash
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Christian Grobmeier @grobmeier.de · 06/12/2024
No, AI can't take this away. You must understand your code. I followed the internet's wisdom: everyone uses Alpine. Then, an error struck. AI shrugged. Debian-based #Linux would’ve been simpler. Don't outsource curiosity—practice it. Asking is often harder than answering! #docker #learning
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Christian Grobmeier @grobmeier.de · 05/12/2024
A sad trend on my website... You get this when you are not writing anything for one year. Working on @log4j.bsky.social kept me more busy than expected. Time to reverse it and patch my websites... Graphics from Plausible.
The traffic graph from my website has declined drastically over the past two years.
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Christian Grobmeier @grobmeier.de · 03/12/2024
All code is impermanent. A function you wrote yesterday might be irrelevant tomorrow. December 1. #ZenDevAdvent
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Christian Grobmeier @grobmeier.de · 22/11/2024
Recently, I talked about #opensource and #java in the awesome #japan user group. There were so many great people! I was there with my @tuxedocomputers laptop, and #linux worked very well!
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Christian Grobmeier @grobmeier.de · 30/10/2024
I love my #opensource and the fact that I can install GnuCash using Brew on my Mac. However, I can imagine how some applications could be much more successful if the UI were better. And yes, I know, I should submit a patch instead of complaining :-)
Very narrow, unreadable UI dialog of GnuCash with bad UX
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Christian Grobmeier @grobmeier.de · 16/10/2024
I think #opensource can be exhausting at times. We should be mindful of how we treat each other and communicate. If we want an "open source community," we should build it with empathy and respect at its core. #mindful #empathy #communication #community Image: DALL-E
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Christian Grobmeier @grobmeier.de · 07/03/2024
Lately, I've been putting much effort into the #log4j website. The changes are not just cosmetic; they're about making the site more useful, accessible, and informative for everyone. Stay tuned for the big reveal – can't wait for you all to see what we've been working on! #java #opensource
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