The Unknown Developer

"Just use a database lock for job coordination" 6 months later: 2,000 lines of scheduling code, orphaned jobs, and zero visibility. Here's why DIY distributed job scheduling always fails: #Java #BackgroundJobs #DistributedSystems #JobScheduling

You Want Microservices, But Do You Really Need Them? https://www.docker.com/b...

Think you know Quarkus? Here are 10 hidden features that change how Java developers build, debug, and optimize apps, including an AI assistant built right into Dev Mode. 👇 Read the full guide: buff.ly/noYLSnK #Java #Quarkus #DeveloperExperience #AI

New tutorial drop: RSS Integration with Quarkus + Apache Camel Turn blog feeds into JSON pipelines and expose live author stats with Micrometer & Prometheus. Perfect for Java devs exploring real-time observability. Read now → buff.ly/yEZVkbX #Java #Quarkus #Camel #Observability

Rafael Ponte called JobRunr "probably the best distributed job scheduled library for java" during his talk at JavaZone. Thank you for the mention Rafael. His full talk on Messaging With PostgreSQL is a must-watch for any Java dev. We will link it in the comments. #Java #JobRunr #JavaZone #OSS

9 High-Performance Tips when using PostgreSQL with JPA and Hibernate vladmihalcea.com/9-postgresql...

PostgreSQL and UUID as primary key

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

🚀 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:

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!!!

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

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

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

"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

📅 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

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.

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

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.

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"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

🚀 Compose Multiplatform, a declarative framework by JetBrains for sharing UIs across multiple platforms, is now Stable and production-ready on iOS. Build beautiful UIs for real-world apps!

If you needed any more evidence that allowing AI to do all your coding, testing, refactoring, and verification is a dreadful idea, just look up the "100x ChatGPT image" meme. Even asking it to duplicate an image without changes eventually decays into unrecognizable nightmares. That's your code.

Another batch of geek content has been delivered, get it now! 👇

Quarkus Questions, Answered A guide to the top 10 things junior Java developers ask (and need to know) when starting with Quarkus buff.ly/gUzbISb #Java #Quarkus #Questions #Beginner

One thing that does make GenAI coding like pairing with a junior dev is they share the same overconfidence

Debugging in a multithreaded test case

“The secret to walking on water is knowing where the rocks are” —Bootsy Collins

Really great to see that @apache.org Kafka is releasing also a @graalvm.org native image compiled version of their docker images. The native docker image "apache/kafka-native:4.0.0" is not only 3 times smaller, the startup is also around 5 times faster! 🚀🏆 kafka.apache.org/downloads

(comic) Added to the Roadmap

Why I Believe #Lombok Should Be Discarded from #Java Projects

Quick note for all the #Java devs out there: Red Hat is giving away the "Quarkus in Action" ebook for free! Link: buff.ly/pSnFMsN I was thrilled to write the foreword for this one – #Quarkus is fantastic tech, and this book is a great way to learn it. Grab it while it's free!

The Duke's Corner Podcast contributed to the Community Keynote at JavaOne 2025 recently with @horstmann.com @lizeraes.bsky.social and @maritvandijk.bsky.social. Was fun. www.youtube.com/watch?v=GwR7...

ICYMI: @vaadin.com 24.7 is out with a bunch of improvements like: - @quarkus.io native image support - Better @kotlinlang.org support - @react.dev 19 support - Automated version upgrades - User impersonation - New Card and Gantt chart components Release notes: vaadin.com/blog/vaadin...

Is this where we currently are?

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Hibernate ORM Moves to Apache License buff.ly/UB5dqOp #Java #jpa #JakartaEE #Hibernate

Fluent API entity building with JPA and Hibernate vladmihalcea.com/fluent-api-e...

Also said, "Crudely, principals design the architecture, seniors break up through architecture and tell the juniors what code to write. The juniors then wrote the code" REALLY? IS THIS HOW MICROSOFT IS BUILDING SOFTWARE?!!