NEWSLETTER ISSUE #66 - March 2026

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Image by Isabela Kronemberger from Unsplash

Quarkus has great performance – and we have new evidence

By Holly Cummins

To provide a transparent and comprehensive performance picture, Quarkus rebuilt its benchmark.

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Image by Zac Ong from Unsplash

How Project Leyden brought a new perspective

By Guillaume Smet

Learn how Project Leyden gave us a new perspective on how we think about startup performance in Quarkus.

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Unleash the Power of AI Agents with Java: Building Intelligent Applications with Quarkus, LangChain4j, and Oracle AI Database

By Juarez Junior

Build a Quarkus-based AI support agent that handles customer support for Oracle database error codes.

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Image by Clark Van Der Beken from Unsplash

Your Java Architecture Is Lying to You: Enforcing Real Boundaries with Quarkus

By Markus Eisele

How executable architecture tests with Taikai replace diagrams, reviews, and tribal knowledge in modern Java systems.

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Rethinking Java Web UIs with Jakarta Faces and Quarkus

By Nicolas Duminil

Nowadays, Java enterprise applications often default to Angular, React, or Vue for the frontend. But for this kind of applications, the most natural UI framework already exists in the Java ecosystem: Jakarta Faces.

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Listening to the Fediverse with Java: A Real-Time Quarkus Experiment

By Markus Eisele

How I built a streaming ingestion pipeline with SSE, batching, and PostgreSQL to track Java-related conversations.

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DPoP: What It Is, How It Works, and Why Bearer Tokens Aren’t Enough

By Hüseyin Akdoğan

Learn what DPoP (Demonstration of Proof-of-Possession) is, what problem it solves, and walk through a working implementation with Keycloak and Quarkus.

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Enterprise support options for Quarkus

The Quarkus community just got stronger: alongside the long‑standing Red Hat Build of Quarkus, IBM has announced the IBM Enterprise Build of Quarkus. Organizations now have a choice between two enterprise distributions built on the same community core — a clear sign of the project's growth and maturity.

Get Red Hat Build of Quarkus 3.27, a downstream enterprise-supported version of Quarkus. Read the Red Hat Build of Quarkus 3.27 documentation.

Check out IBM Enterprise Build of Quarkus 3.27 for cloud-native and AI-infused applications. Read the IBM Build of Quarkus 3.27 documentation.

Top Posts and Comments

Github Discussions is Quarkus's place for community collaboration, conversation, events, Q&A, job opportunities, and other great community topics.

Go join the Quarkus discussions!

Videos of the Month

Quarkus Insights #239: Reactive Loom

Quarkus Insights #238: Quarkus and Leyden, the bumpy road ahead

Quarkus Insights #237: What is StackGres

Quarkus Insights #236: How do you know if you got better (or worse)?

Upcoming Events with Quarkus

ArgoCon Europe

Date: March 22, 2026
Location: Amsterdam, Netherlands
Event Type: In Person

ArgoCon is designed to foster collaboration, discussion, and knowledge sharing on the Argo Project, which consists of four projects Argo CD, Argo Workflows, Argo Rollouts and Argo Events.

Kubecon Europe

Date: March 23-26, 2026
Location: Amsterdam, Netherlands
Event Type: In Person

The Cloud Native Computing Foundation’s flagship conference gathers adopters and technologists from leading open source and cloud native communities.

Voxxed Days Zürich

Date: March 24, 2026
Location: Zürich, Switzerland
Event Type: In Person

Voxxed Days Zürich brings together software developers to discuss the most important topics in our industry, featuring expert speakers and opportunities to network with fellow professionals.

Voxxed Days Amsterdam

Date: April 1-2, 2026
Location: Amsterdam, Netherlands
Event Type: In Person

Accelerate your skills at Voxxed Days Amsterdam, the conference for tomorrow’s developers.

Microsoft JDConf

Date: April 8-9, 2026
Location: Virtual
Event Type: Virtual

Now in its sixth year, Microsoft JDConf is a global virtual Java developer conference that brings the community together to build and scale modern, intelligent, cloud-native applications for an agentic world.

Java Day Istanbul

Date: April 18, 2026
Location: Istanbul, Turkey
Event Type: In Person

Java Day Istanbul is one of the most effective international community driven software conference of Türkiye supported by Istanbul Java User Group. The conference helps developers to learn the newest technologies about Java, Web, Mobile, Big DATA, Cloud, DevOps, Agile and Future. Java Day Istanbul also helps developers, tech companies, and startups to establish a good network among them.

JCon Europe

Date: April 20-23, 2026
Location: Cologne, Germany
Event Type: In Person

Dive into the pulsating heart of the Java community at JCON EUROPE 2026, the premier in-person Java community conference in Germany, lovingly organized by the Java User Group Oberpfalz in collaboration with JAVAPRO Magazine.

Great International Developers Summit

Date: April 21-24, 2026
Location: Bangalore, India
Event Type: In Person

Join the 18th annual edition of the Great International Software Developer Summit, GIDS 2026, April 21-24 in Bangalore, India. The four-day program includes an eclectic mix of technical talks, conversations and experiences, featuring some of the most talented and influential figures.

Devoxx France

Date: April 22-24, 2026
Location: Paris, France
Event Type: In-Person

Devoxx France is the largest independent conference for development and programming in Europe. For three days, professionals can attend 240 presentations across two levels, in French and English.

Devoxx Greece

Date: April 23-25, 2026
Location: Athens, Greece
Event Type: In Person

Devoxx Greece is the evolution of the Voxxed Days Athens conference, and it has become a 3-day conference where developer communities come together to explore the latest technology advancements with some of the most inspiring speakers in our sector.

CloudConf

Date: May 6, 2026
Location: Turin, Italy
Event Type: In Person

The most beloved cloud conference returns for its biggest edition yet, with over 1,000 attendees and tons of content, talks, and networking.

Devoxx UK

Date: May 6-7, 2026
Location: London, UK
Event Type: In Person

The UK's premier conference for Java developers. Practical insights and strategies to tackle today’s toughest challenges whilst preparing for what’s emerging next.

Uphill Conf

Date: May 7-8, 2026
Location: Bern, Switzerland
Event Type: In Person

Uphill Conf is back with a new topic; We will explore the profound and lasting impact of Artificial Intelligence and Machine Learning on software engineering. 

Red Hat Summit

Date: May 11-14, 2026
Location: Atlanta, Georgia USA
Event Type: In Person

Red Hat Summit is the premier enterprise open source event where IT professionals can collaborate, learn, and move forward with hybrid cloud technologies that unlock innovation, everywhere.

JCon OpenBlend & Make IT

Date: May 27-29, 2026
Location: Portorož, Slovenia
Event Type: In Person

We will gather again - users of Oracle & Java & Open-source on annual conference May 27 - May 29, 2026 in sunny and beautiful Portoroz, Slovenia.

jPrime

Date: June 3-4, 2026
Location: Sofia, Bulgaria
Event Type: In Person

jPrime is a conference with talks on Java, various languages on the JVM, mobile, web and best practices.

DevTalks Romania

Date: June 3-4, 2026
Location: Bucharest, Romania
Event Type: In Person

DevTalks, DevTalks Romania, DevTalks conference, tech conference, regional IT conference, tech conference in Romania, Security, masterclass IT, AI conference, java conference, IT events, Java, Web, Mobile, Big Data, Cloud, DevOps, DevLead, QA Testing, Product Management, Engineering, The largest tech conference in CEE, regional tech conference, the biggest tech conference for developers, IT conference, IT event Romania.

KubeCon India

Date: June 18-19, 2026
Location: Mumbai, India
Event Type: In Person

The Cloud Native Computing Foundation’s flagship conference brings together adopters and technologists from leading open source and cloud native communities in Mumbai, India, from 18-19 June, 2026. Be a part of the conversation as CNCF Graduated, Incubating, and Sandbox Projects unite for two days of collaboration, learning, and innovation to drive the future of cloud native computing.

Software Architecture Summit 

Date: June 15-19, 2026
Location: Bucharest, Romania
Event Type: In Person

From June 15-19 2026, the Business Summits at Nord Events Center by Globalworth will bring together global experts and industry pioneers to tackle the biggest challenges and opportunities in tech. Across five specialized events—the Innovation Summit, Future AI Summit, HR Masters Summit, Software Architecture Summit, and AI Coding Summit— attendees will gain insights into Generative AI, AI-Human Collaboration, AI Agents, MultiCloud architectures, workforce transformation, and emerging innovations such as bionic arms that merge human capabilities with advanced technology.

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Quarkus is supersonic subatomic java.