To my fellow European techies: why do you still think it’s OK to speak at American conferences? At this point, isn’t it completely obvious that you’re traveling to a country led by a corrupt and fascist regime that needs be boycotted?

God forbid that there’s a plan

Half my timeline is now about AI while the other half shows the US Gestapo in near-real time action. Too fucking unreal, I need to go offline more to stay sane.

New Year’s resolution: listen more John Butler Trio. Weird how I’ve mostly missed them before.

Here we go 🤞 As always for @spring.io, this would be a brand new talk. I've meaning to write or talk about this solution for some years already, so hopefully I'll be able to finally share what we've developed for DLQ management with the whole community in Barcelona next year! 🍃

So fucking predictable news.sky.com/story/us-pla...

I’m working on it! ⏳

Don't know why yet, but turns out that running a Spring Boot app using virtual threads on OpenJ9 24 or 25 in a Linux container results in continuous high CPU load, which did NOT occur on their 21 JVM. Starting investigation, but all clue suggestions are welcome!

In the pocket! 🎸 www.paradiso.nl/programma/tr...

To my fellow European techies: why do you still think it’s OK to speak at American conferences? At this point, isn’t it completely obvious that you’re traveling to a country led by a corrupt and fascist regime that needs be boycotted?

Alas, the TV has died… Probably main board issue, but can’t find replacement. Well, it’s Black Friday, so l’ll take it as a sign #glasshalffull

Ajeto!

It’s time: open.spotify.com/playlist/2QB... Currently listening: open.spotify.com/track/6Owqzz...

Go home Windows, you're drunk

This innocent-looking change in Spring Cloud AWS is actually quite a big improvement for systems that use different message payloads on a single SQS queue: I've written my own custom dispatching for this, looks I can now remove all that code now! 🥳 See docs.awspring.io/spring-cloud... for details

I’ve been saying this for years, yet @broadcom.bsky.social’s Core Spring training still promotes interfaces as return types for @Bean methods… Glad to see the @spring.io 7 release notes making this explicit statement

Did some checking: the problem described in trifork.nl/blog/i-used-... with two configured JSON msg converters persists in Spring Boot 3.5.7, but is no longer there in Boot 4 which configures just a single JacksonJsonHttpMessageConverter! 🥳 Also, both converters have ParameterNamesModule in 3.5.7

Now watching: youtu.be/K3MTqCu9jdM?...

I think you may want to disable `MapperFeature.SORT_CREATOR_PROPERTIES_FIRST` if so -- Records are... challenging as ordering is implied by record declaration, somehing POJOs don't have.

Can we *please* treat the fact that github.com/OpenAPITools... doesn't support Jackson 3 yet as *another* good reason to *finally* stop designing JSON APIs that distinguish between fields missing and being null?

Somehow this received 100K views: nice to see that the topic resonated with so many people!

“Pivot to porn” is a perfect band name, BTW

BTW, was there a talk at @devoxx.com that provided any clarification on what to make of Oracle’s confusing announcement? blogs.oracle.com/java/post/de...

Belgium’s turn today: dEUS, Soulwax, Absynthe Minded, Balthazar, Triggerfinger and more. Amazing what comes out of such a small country 🎶

After 7 years of usage I learned today that Spring Boot @micrometer.io metrics like ‘http.server.requests.avg’ lead to wrong, too low values with backends like Datadog because values of 0 are reported when there are no requests for already reported tag values: you need to use .sum / .count 🤯 1/2

Amazing… youtu.be/ngc8Fu3mGzA?...

My presentation on live reloading of Spring configuration from this year’s @springio.net has been published!

Good times at @ai4devs.bsky.social with @martinelli.ch and @antonarhipov.bsky.social

Attending @martinelli.ch’s talk on spec-driven AI development at the Ai4Devs conference in Amsterdam

Looking forward to reconnecting with many people from the Java community at the Ai4devs conference tomorrow (and learning more about applying AI, hopefully): amsterdam.ai4devs.io

Are you deploying to #Azure App Service and want to send your application's structured logs to @datadoghq.com? Have a look at my new blog post: trifork.nl/blog/structu...

Built a remote MCP server with Spring AI yesterday. Very easy, but LLM misinterpreted a lot of dates in our response. Turns out the JsonParser doesn't use your default ObjectMapper bean, so this helps: JsonParser.getObjectMapper().configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);

Running this in production starting today 😎 #OpenJ9

In a Norwegian mood, apparently: listening to Kaizers Orchestra and Katzenjammer this afternoon 🎶

I was interviewed by Patrick Akil for the Beyond Coding Podcast last month, and the video is now available: youtu.be/pNtkOZuWetg?... Thanks for having me on the show!

Didn't see an announcement yet, but it looks like #OpenJ9 / IBM Semeru have finally released a Java 24 JDK! Check out github.com/ibmruntimes/... and hub.docker.com/_/ibm-semeru... for container images (which have Ubuntu Noble-based versions now as well)

Loving all the Blues Brothers references in Terry Pratchett’s Soul Music! 🕶️ “We’re on a mission from Glod”

Zoon speelt met de big band van muziekschool Amstelveen in het voorprogramma van Hans Dulfer 🎷 in P60 op 4 september!

Let me guess... Those homeless in West Bank will be housed and cared for at the new concentration facilities in Gaza?

I don't know how anyone can allow this to happen in their name. But one could easily have expected the Israeli population to react _particularly_ strongly to images like this. Guess not. Just remember: no "Wir haben's nicht gewusst" for you. (It was a shitty excuse back then too.)

Couldn't analyze a problem in a Java/RabbitMQ app as log only had tons of NullPointerExceptions without msgs *and* without stacktraces. Turned out to be a Java feature (enabled by default): NPEs occurring very often are "fast thrown" without info. Disable using -XX:-OmitStackTraceInFastThrow #protip

Let's go!

On my way back from what was once again an incredible @springio.net: many thanks to @sergialmar.com and the rest of the team, and very happy to hear that #springio26 will happen as well in April! 🥳🍃

Developers don’t want AI to write their code for them, they want to learn how to code as fast as @starbuxman.joshlong.com! #springio25 with @antonarhipov.bsky.social

Shoutout to the Spring Data OG! #springio25

Spring Boot 3.5.0 is available now! spring.io/blog/2025/05...

Great news: observability support for Spring Cloud AWS SQS just got merged! Thanks to @tomazfernandes.dev for putting in the hard work: had you been at @springio.net I would’ve bought you a beer 🍻

Enjoyed the #springio25 keynote this morning, including the comverage of this: AOT data repositories which are easily debuggable at runtime with significant performance improvements through JPQL instead of Criteria queries!

On my way to @springio.net! Really looking forward to reconnecting with everyone 🤩 #springio25