How beautiful are these? A team designed parachutes where holes provide the air resistance, inspired by the Japanese art of kirigami. They can be aimed more precisely than conventional ones, and look way cooler. physicsworld.com/a/kirigami-i...

If you're attending Kubecon Europe today, make sure you check out "From Creepers to Clusters: Evolving Minecraft Into a Cloud Native Platform" with Jaden Walderich from 16:00 - 16:30 CET in Hall 7 in Room B. github.com/quarkusio/qu... #quarkusworldtour

Eeee, that's my data visualisation on the big screen! I'd be less excited if I hadn't foolishly implemented it using very low-level libraries where I practically had to lay each pixel by hand.

Currently at the biggest KubeCon event yet. Meanwhile, I wrote some reflections on an entirely different conference from last week, and why it was so special #MonkiGras2026: diginomica.com/monkigras-20...

Making your conference talk slides? Make the font bigger. Do it again. I know the default font looks ok when you’re looking at it on your laptop but I promise no one can read that from the back If you can’t fit all the words you want on one slide, you have too many words. Make another slide!

Open Source Gave Me Everything Until I Had Nothing Left to Give #devopsish

For folks at #Monkigras curious about @commonhaus.org, I recorded a @redmonk.com MonkCast w @ebullient.dev: redmonk.com/blog/2024/11...

Great talk from IBM’s @hollycummins.com and @sannegrinovero.bsky.social on preparing to keep open source alive and well during the age of vibe coding #monkigras

This is going to look in retrospect like an obvious move but it's brilliant: asymco.com/2026/03/10/t...

Why do the same ideas keep coming back? @hollycummins.com closes QCon London on March 18 with "The Free-Lunch Guide to Idea Circularity." Find out more about the keynote: bit.ly/4uuBYzO

You have a talk idea. Yes, but… “I’m not ready.” “Yes, but… someone else is better.” Drop the “but.” Write the abstract. Press submit. 2026.javazone.no/speaker

Both showers and public transit rides have 3x multipliers to Thinking Time. You'd think stationary bikes would be too because they're both moving and mindless but actually they're 0.5x at best. Long flights have 10x to Thinking Time but only if you're in the sweet spot of tired but not TOO tired

I hate the re-soloing of development. We were so close to learning social skills, creating community, encouraging creativity & purpose, & applying empathy. Easier to manage if each of us is so busy with our genieswarms that we don't have time to talk & reflect.

Lots of good stuff just in this tiny clip, but "the anti-roadmap" is the one I'm going to go talk to my colleagues about.

There are only 2 categories of tools, paraphrasing Bjarne Stroustrup: the ones people complain about and the ones nobody uses. Be gentle to maintainers, especially when they do this on their free time :)

Installing autocompletion might be worth your while here: sdk use java 21 <TAB> With a good enough shell you can even TAB-navigate to your version of choice.

Thanks to you guys I just tried mise and... it's awesome. I was using SDKman through a Fish shell port and it was never on par with zsh (broken completions, etc). mise just... works like a charm!

While that PR is stale, see the comment from a week ago github.com/sdkman/sdkma... "we're doing the work in the native CLI and new backend. Don't worry, this is coming soon, promise!"

Shell autocompletion works great for this. "sdk use"<TAB> will show the installed JDKs

Agreed. And `sdk use java 25` would be also on the list as most of the time this is what I want and as you I need first to list know the exact version

SDKMan is a handy tool, but some usability tweaks would be much appreciated: - Make the "java" argument optional, if the version is unambiguous (`sdk use tem-21.10` rather than `sdk use java tem-21.10`) - If I say "use xxx" and it's not installed, don't just die, offer to install it then proceed 🧵

[email protected] wrote a great summary of my "6½ Ridiculous Things To Do With Quarkus" talk, and now I want him to follow me around like a court reverse-jester, translating my chaos into coherence: www.the-main-thread.com/p/six-and-a-...

Ooh, I see @devbcn.bsky.social is moving venue, to something water-side and central. The previous suburban location was not ideal for visiting speakers, so I'm happy to see this. Is this the same venue it was in before-before, or a third location?

A few years ago, I wrote on twitter (in the before times) about my first ever in-person conference talk. I had had a blackout mid-talk and was saved by a literal angel in the audience who broke my panic freeze by saying "Take your time". Yesterday at a talk, I met her angel colleague. 1/

Do you remember the fallacies of distributed computing? No? Of course not. That's why they're fallacies. 😆

Science has named the seemingly unstoppable growth of renewable energy worldwide as the 2025 Breakthrough of the Year. Learn more about this year's #BOTY and other big advances in science: https://scim.ag/493Tpgx

I find this strangely adorable. (It's also literally a-door-able, but let's all pretend that pun never happened.)

If China's emissions had kept growing at previous levels emissions would like, what, maybe a full GIGATONNE higher....the area of avoided emissions here is like deleting the emissions of entire countries. This is happening at a scale that will very clearly have an effect in lessening disasters

The Java Track at Devoxx UK is STACKED. We’re bringing the best in the business to London to talk about the future of the JVM. From JDK 26 internals to AI and microsecond latency, here’s what’s landing:

Security vs DevEx? False choice. @abangser.bsky.social, Adrian Mouat & @hollycummins.com explore how teams can build systems that are both secure and great to work on. youtu.be/EGSMP2UodKM?...

Say hello to the Mind the Geek Track, where creativity meets engineering. Quarkus madness with @hollycummins.com 😆 A DIY robot arm by @iuliaferoli.com JVM emulation with Remco Siemonsma Led by @kayaweers.bsky.social Watch the full lineup at amsterdam.voxxeddays.com And get your ticket.

Mocking is a useful tool, but it has risks. I've just spent an hour staring at some code, wondering how it could fail in real life when all the tests passed beautifully. (You all know what the answer is going to be, don't you? 😅 ) Yep, I'd baked an unvalidated assumption into a mock. 🤦

Groundhog Day Meaning xkcd.com/3202/

. @hollycummins.com talks with @xstefank.bsky.social & Jan Martiška about "@quarkus.io in Action" ": why they wrote it, what surprised them, and JVM vs native compilation advice. 🎧 gotopia.tech/podcast

To misquote Gremlins "the most important rule, the rule you can never forget, never read the comments."

I made a terrible mistake and read the comments.

At 6pm tonight (UK time), I'll be doing lots of silly Quarkus demos at the JChampions conference: www.youtube.com/watch?v=hdca...

Check out our latest Foojay Podcast #89! @frankdelporte.be talks with @hollycummins.com and Michal Maléř about Quarkus and Agentic Commerce. YouTube video, podcast links, and more info on: foojay.io/today/foojay... #Quarkus #AgenticCommerce #Podcast

On today's Quarkus Insights, Michele Dolfi talked about how bad OCR led to the nonsense phrase "vegetative electron microscopy" becoming embedded in scientific literature. Now no one knows how to get it out: www.sciencealert.com/a-strange-ph...

This picture perfectly captures my experience of writing a talk. Every time.

Check out "Non-deterministic? No problem! You can test it!" with Eric Deandrea & Oleg Selajev today at JChampions Conference. Friday, January 23rd at 9am EST. FREE and VIRTUAL: www.youtube.com/watch?v=hHAL... (1/2)

I use "McNamara Fallacy", but mathwashing conveys the point, better, without readers needing to go look up what the McNamara fallacy is. (Plus the McNamara fallacy is technically more about being misled into measuring what's easy to measure, rather than "numbers give the illusion of competence".)

Currently working with my feet on my desk like the villain in an eighties movie. These are the benefits of working at home that no one talks about.

Come for the discussion of LLMs in academia, stay for the EPIC pictures of people doing exams in fancy dress.

Have any of you seen laser-marked fruit in the grocery store? Trying to get a rough idea of how widespread it is. www.electrooptics.com/news/europea...

The 2026 JChampions Conference begins on Thursday at 9:00 AM EST. You only need visit jchampionsconf.com/schedule.html for the link to each session to watch it live or anytime afterwards till the end of time.

Just a reminder, the Quarkus Community Call happening tomorrow (January 20th at 2pm Paris time). This week's topic: Office Hours - Ask Us Anything! Join via Google meet: meet.google.com/jka-uhzd-fby

ICYMI: You're probably ignoring the best parts of Quarkus. I compiled 10 "Hidden Gems" that I use in almost every project: - @Location for easy HTTP headers - Zero-config Flyway - The unspoken power of Qute type-safety Stop writing boilerplate. buff.ly/aPmLiHC #Java #Quarkus #DeveloperExperience