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Posts by Jonatan Ivanov

A graphic showing "Pride Versioning" where the first number is the Proud Version. Then second is the Default Version. And the last number is the Shame Version.

A graphic showing "Pride Versioning" where the first number is the Proud Version. Then second is the Default Version. And the last number is the Shame Version.

Made very few changes to the latest build and was thinking maybe I'll be able to ship this one without incrementing the shame version (last number in a version number) and 2 minutes into testing, it's already getting bumped.

3 weeks ago 1495 241 29 19

/cc @starbuxman.joshlong.com
It seems ~Christmas~ Golden Week came early. :)

3 days ago 2 1 0 0
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Making Maven Users Use JSpecify/NullAway More Easily with the Nullability Maven Plugin - IK.AM This article introduces how to introduce JSpecify and NullAway in Maven and simplify the configuration with the Nullability Maven Plugin.

Making Maven Users Use JSpecify/NullAway More Easily with the Nullability Maven Plugin ik.am/entries/900/en

1 month ago 7 5 2 0
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JUnit Converters Collection of argument converters for JUnit parameterized testing

Today, from the venue of Spring I/O, I'm open-sourcing a new library to make data-driven testing in Java a little bit easier: JUnit Converters!

A collection of ready-to-use argument converters designed to streamline parameterized testing in JUnit 6 (and 5!) 🚀

🧵

stefano.codes/junit-conver...

6 days ago 14 8 1 0

Ugh, hope you are ok!

1 week ago 1 0 1 0

That's a very valid reason for waking up at 4am. :)

1 week ago 0 0 0 0
Testing Spring Boot Apps Without Losing Your Mind
Testing Spring Boot Apps Without Losing Your Mind YouTube video by Manning Publications

Hey Spring fans 🍃

My book "Testing Spring Boot Applications" is in early access with @manning.com. We made a short video to tell you all about it: www.youtube.com/watch?v=aAFK...

It's 50% until April 16th with the promo code MLGarniermoiroux. Check it out: hubs.la/Q0473JRG0

1 week ago 12 5 0 1
Spring I/O • 13-15 • April • Barcelona 2026

I'll be speaking together with @tommyludwig.bsky.social at @springio.net 2026 on Apr 13-15. Let us know if you will be there, you can meet us at the Spring both or after our talk! #springio26 2026.springio.net/sessions/i-c...

1 week ago 3 1 0 0
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I'm doing visual but I think clothing is a very underrated part of the hobby. :)

2 weeks ago 0 0 0 0
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the next Portland Java User Group meetup is Tuesday April 14

This month’s topic is: AI Assisted Software Development

Presented by: Sean Sullivan

@tinyrobots.bsky.social

3 weeks ago 3 4 1 0

But as Horsie leaves, we get Scorpie arriving. :)

4 weeks ago 1 0 0 0
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Spring Boot 4.1.0-M3 available now Level up your Java code and explore what Spring can do for you.

Spring Boot 4.1.0-M3 has is available now! spring.io/blog/2026/03...

1 month ago 9 5 0 0
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Testing Spring Boot Applications - Daniel Garnier-Moiroux @‌SpringBootTest, MockMvcTester, SpringExtension, and the rest of the Spring Boot testing toolbox are incredibly powerful weapons—once you learn how to wield them. Testing Spring Boot Applications in...

Friends! You like my 3-hour conference talks about Spring stuff?

Then you'll love my new project, the "Testing Spring Boot Applications" book with @manning.com !

It's in early access. Read the first four chapters now, get the full book on release.

It's 50% off until April 2nd: hubs.la/Q0473JRG0

1 month ago 17 3 2 1
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Spring Boot 4.0.4 available now Level up your Java code and explore what Spring can do for you.

On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 4.0.4 has been released and is now available from Maven Central.

spring.io/blog/2026/03...

I hope it's not 404ing.

#java #spring #springboot

1 month ago 20 6 2 1
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v1.4 and v2.2 Release Notes Micrometer Observation API instrumentation and Spring Boot 3 Auto-Configuration for JDBC APIs - jdbc-observations/datasource-micrometer

🚀 Datasource Micrometer v1.4.0 and v2.2.0 are now available on Maven Central!

Highlights:
• SPRING_PROXY is now the default proxy strategy
• Proper support for Spring Cloud refresh scope with HikariCP

Release Notes:
github.com/jdbc-observa...

#springboot #micrometer #observability #jdbc

1 month ago 2 2 0 0
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8 different calculators

8 different calculators

When I tell people I'm a software engineer, I'm sometimes asked: "how many computer do you have?".
Well, I have a laptop, a Rasperry Pi and uhm, well, it depends...

(Also, exactly when does this count as an addiction? 😃)

1 month ago 8 1 0 0

Reminder to sign up for the pre-conference observability workshop with the Micrometer team at Spring I/O

1 month ago 6 5 0 0
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The Reputation Formula: Turbocharge Your Developer Career · Luma Get ready to level up your career in software development with the secret sauce just for developers - the "Reputation Formula" that can skyrocket your…

The next @seattlejug.bsky.social event is about @brjavaman.bsky.social helping you to turbocharge your career!

luma.com/b0ei556v?utm...

www.meetup.com/seajug/event...

1 month ago 0 1 0 0
Spring I/O • 13-15 • April • Barcelona 2026

I'll be talking in April at Spring I/O 2026 about the new stuff in Spring Boot 4. Looking forward to it!

2026.springio.net/sessions/spr...

@springio.net

#spring #springboot

1 month ago 14 10 0 0

It was recorded, the conference has a YouTube channel, they will upload it there, I recommend you to subscribe so you will get the notification when it happens.

1 month ago 1 0 0 0

👀

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And that’s a wrap on #Devnexus 2026! 🎉

Huge thanks to our attendees, speakers, sponsors, and volunteers for making this year unforgettable. The energy, learning, and community are what make it special. 🤩

What were your favorite moments?

See you next year!🚀

1 month ago 6 2 0 0
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I Can See Clearly Now: Observability of JVM & Spring Boot 2-3-4 apps

If you are interested in Observability and you are at @devnexus.bsky.social, please consider my talk today:

devnexus.com/events/i-can...

1 month ago 0 0 1 0
Jonatan's Devnexus plying card in front of a laptop screen showing the description of his talk.

Jonatan's Devnexus plying card in front of a laptop screen showing the description of his talk.

My talk is tomorrow @devnexus.bsky.social, please consider coming if you are interested in Observability.

devnexus.com/events/i-can...

Also, you can collect my card if you are participating in the card game.

1 month ago 1 0 0 0

I think it is very important. I gave you everything to fix it, please do not mislead your readers.

1 month ago 1 0 0 0
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Please don't spread this. I already told @frankel.ch why this is not a good idea.

bsky.app/profile/jona...

1 month ago 1 0 1 0

That escalated quickly. :D

1 month ago 1 0 1 0
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How Not to Measure Elapsed Time How Not to Measure Elapsed Time

Please do not use System.currentTimeMillis() to measure elapsed time: develotters.com/posts/how-no...

1 month ago 11 4 0 1
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Building Reliable workflows in Java, Tue, Feb 24, 2026, 6:00 PM | Meetup **Details** So you have a new Workflow in your application. Let's say that it has 20 steps in the workflow * What happens if the instance handling the workflow goes down *

The next @seattlejug.bsky.social event is "Building Reliable workflows in Java":

Meetup: www.meetup.com/seajug/event...

Luma: luma.com/wzzmruqe?utm...

2 months ago 2 2 1 0

tracing 1.7.0-M3 has been released!

Check out the changelog at github.com/micrometer-metrics/traci...

2 months ago 0 1 0 0