The Unknown Developer

9 High-Performance Tips when using PostgreSQL with JPA and Hibernate

vladmihalcea.com/9-postgresql...

PostgreSQL and UUID as primary key PostgreSQL and UUID as primary key

PostgreSQL and UUID as primary key

YouTube video by Devoxx Java annotation processing magic for muggles by Álvaro Sánchez Mariscal Arnaiz

Why you should stay away from Lombok. Great explanation of the internals of Lombok by Álvaro Sánchez Mariscal Arnaiz: youtu.be/mAXNKkejl38?...

Beta test JobRunr v8 This is a step by step migration guide to move from JobRunr v7 to JobRunr v8.

🚀 JobRunr v8 is now in beta, want to try it early?

Why it’s worth testing:
• SmartQueue = faster throughput
• Carbon Aware Jobs = greener execution
• Autoscaling + multi-cluster dashboard
• Cleaner handling of failed jobs

🔗 Join the beta:

Quarkus in Action | Red Hat Developer Download Quarkus in Action, a practical guide to building resilient and scalable, cloud-native, enterprise Java applications using the Quarkus framework

I'm super happy that I can share that the FREE FULL VERSION of Quarkus in Action continues to be available until January 16, 2026!!!

Download and share!

developers.redhat.com/e-books/quar...

Thanks to Red Hat developer!!!

Handling User Migration with Debezium, Apache Kafka, and a Synchronization Algorithm with Cycle… This is a story of migrating millions of users’ data with Kafka, Debezium, and a custom Synchronization Algorithm with Cycle Detection.

Detailed writeup of a platform migration at Kleinanzeigen using CDC with Debezium and Apache Kafka: medium.com/berlin-te...

Enforcing Architecture with ArchUnit in Java The content discusses implementing architectural rules in code using ArchUnit, emphasizing its effectiveness over traditional documentation. It details the process of defining architecture checks w…

You create a well-defined architecture, but how do you enforce this architecture in your code? With ArchUnit you can define rules for your architecture by means of unit tests.
#Java

(comic) Showing the new employee around

A Java Geek weekly 86

Another installment of the Java Geek Weekly is waiting for you. Enjoy!

and still no streaming platform has an "album view" for playlists, which groups all albums in a playlist together. I like to collect albums in playlist to have them in "individual" genres

"The big benefit? It’s distributed."

One pod schedules the job, another runs it.
Frontend never feels the load. 👌

Perfect for Kubernetes scaling with @quarkus.io + JobRunr

#Java #OSS #Kubernetes #Quarkus

IntelliJ IDEA Conf 2025 | June 3-4, 2025 We invite you to join us for IntelliJ IDEA Conf 2025 and gain insights from industry leaders and experts.

📅 It’s almost time! #IntelliJIDEAConf 2025 is just a week away.
Make sure you’re registered to catch all the live sessions and Q&As.
Secure your spot 👇

It's 2030. There is a massive demand for human senior developers to fix garbage made by Vibe coders. 🙃

(comic) Mood

Obsidian Bases + Obsidian Web Clipper is the web archival tool I always wanted

replaces my read-it-later app and saves everything to local markdown files

Or maybe Apple can have a look at Total Spaces and learn how to do virtual desktops right and make it runnable on modern macOS again.

Can Apple release something that puts virtual desktops back on the correct monitor after unplugging/replugging? Call it "screen intelligence" and pretend it's AI-powered or something.

Hibernate 7 (and Hibernate Validator 9) - In Relation To Today—​or rather, late last night—​we released Hibernate ORM 7, which includes the latest version of Hibernate Data Repositories. We’ve also released Hibernate Validator 9. Hibernate ORM 7 features a…

The team released #Hibernate ORM 7, Hibernate Data Repositories & Hibernate Validator 9.

#Jakarta EE 11:
- Persistence 3.2
- Data 1.0.
- Validation 3.1

This is the first version available entirely under the Apache Software License. (Including #Envers!)
buff.ly/ImmSwhb
#Java

Do you know when it will be available as default in Quarkus Panache?

We are good at writing bad code quickly. We are bad at writing good code slowly, that is taking the necessary time to focus on quality.

We’re in Java Magazine! 🧠🔥
"Easy Background Job Processing with JobRunr" is now live!

Lambdas, retries, scheduling magic, and scaling like a boss, all inside.

📖 Want a free signed copy? Comment below and we’ll send one 📬

#Java #NLJUG #JUG

Curious about building CLIs with Java? Re-watch @wilda.bsky.social ‘s live coding session on crafting powerful, easy-to-develop CLIs using Picocli and Quarkus. Learn to create a full-fledged executable with GraalVM and enhance your productivity.

View here - buff.ly/RjkZNui

#30YearsOfJava

(comic) Where do you see yourself in 5 years

Frustration is caused by debugging. The more you understand the code's flaws, the more you wish you didn't understand how it broke.

Why is it needed to reinvent the wheel and not just take something like Jackson and include it?

IT Meme in which Ghost tries to scare person mutltiple times with "Boo!" unsuccessfully, then scares them by saying "PYTHON 2.7".

👻

the code to be tested, should behave differently if called twice if a property of the request scoped bean was changed and behave equal if not. It was the easiest and fastest way with Mockito to test this behaviour. But not for tests with multithreading. Then things got complicated 🤷‍♂️

"When I ask AI to generate code on something I don't know about, I'm in awe. When I get it to generate code in an area I know, I'm disgusted. I would *not* ship it."

- @venkats.bsky.social at #DevoxxUK

It’s even more than 25 years for me, but today I used Mockito for the first time in a unit test. It was the easiest way to change the property of a request scoped bean inside a method

Next step would be Heptagon