I see quite some usage of JSON-RPC lately, esp. in AI. Is there some support in the Spring ecosystem for this already? I'm thinking about routing/mapping to handlers, error handling and esp. metrics since editing HTTP metrics are useless b/o the single endpoint.

Cool to read how @springio.net has real-world impact: medium.com/graalvm/insi...

Even Josh and James are in awe when Venkat demos Kotlin in vi while talking as if he was a one-man band #vdams26

“Ik hoop maar dat er roze koeken zijn” youtu.be/F3ZTrGWSLf4?... #dvams26

Alina explaining how GraalVM will focus on AI after Oracle just laid off 30.000 colleagues to pay for those investments is a bit hard to watch. Obviously she is handling it very professionally, but I can’t help thinking about how it must feel to sit there presenting at a time like this… 🫶 #vdams26

Spring-AI deep-dive by @tzolov.bsky.social at #vdams26. Fast-paced with lots of info, at the same time slowly building up to show how all features are based on a small nr of core principles and techniques, very nice!

So Anthropic engineering interviews will now ask “what would YOU improve in our Claude Code code base” as an assignment

En het parlement biedt uiteindelijk nooit tegenwicht. Want kabinet zegt dat ze het heel zorgvuldig gaan doen met de beste regels. Als parlement kun je dan of zeggen "nietus, dat doen jullie helemaal niet", of je kunt meedoen: alles voor de veiligheid! Zie ook mijn stuk berthub.eu/articles/pos...

Random shoutout to the Jon Spencer Blues Explosion 🤯

First blog post of the year is out: Fault Injection with @spring.io using @micrometer.io Baggage Propagation. If you're building complex orchestration flows with Spring and looking for a way to test non-happy flows, this one is for you! trifork.nl/blog/fault-i...

Spring cleanup (although I’m keeping my old Spring books)

Standard tickets are almost SOLD OUT. 🎟️ Get yours before prices go up! 2026.springio.net

Learned that Spring RestClient.Builder is stateful and passes state like interceptors by ref on build. That means that this creates clients with both *two* interceptors: var first = builder.requestInterceptor(someInterceptor).build; var second= builder.requestInterceptor(someInterceptor).build;

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)