Cloud on JAVAPRO International

Introducing skills.boxlang.io — The Open Agent Skills Ecosystem for BoxLang & the Ortus World

Wed, 03 Jun 2026 12:00:03 +0000

Today we’re launching something we’ve been quietly building for months: skills.boxlang.io — a public, agent-agnostic directory for AI skills covering BoxLang, ColdBox, TestBox, CommandBox, and the entire Ortus ecosystem.

If you’ve ever pasted a 400-line system prompt into yet another AI agent, watched two of your bots drift onto subtly different versions of the same coding standard, or spent half a Friday afternoon trying to convince an LLM that BoxLang is not Java and is not CFML, or how to code for Modern CFML; this launch is for you. 🎯

JCON EUROPE 2026: Why the Java Community Still Meets in Person

Mon, 01 Jun 2026 07:00:00 +0000

Every year, when we start planning JCON EUROPE, one question always guides us:

How do we create a conference that developers genuinely enjoy attending?

Not just another event with slides and sponsor booths. Not a place where people passively consume information and leave. We wanted to create an environment where developers actively connect, discuss, challenge ideas, and solve real-world problems together.

Looking back at JCON EUROPE 2026, I believe this spirit was visible everywhere.

Stop Writing YAML: How to Define, Test, and Deploy Your Cloud in Pure Java

Tue, 12 May 2026 07:00:00 +0000

1. Introduction

As Java developers, we apply rigorous engineering practices to application code: type safety, unit testing, refactoring, code review. Then we switch to deploying that code and write hundreds of lines of YAML, accepting the lack of expressiveness, missing abstractions, and missing flexibility as the cost of doing business. Or worse, we log into the cloud console and click our way through to the deployment.

This article explores an alternative: defining cloud infrastructure in Java, with the same tools and practices we use for application code. We’ll build a working example, a Java service deployed on AWS, covering the full lifecycle from resource definition through testing to CI/CD. While this example uses Quarkus, the infrastructure patterns demonstrated here apply equally for Spring Boot, Jakarta EE, or any other containerized Java framework. The companion code is available at github.com/wlami/stop-writing-yaml-javapro.

Building Production-Ready AI Agents with Java and Spring AI

Thu, 30 Apr 2026 07:00:01 +0000

Java developers have been building enterprise applications for decades, but when it comes to AI, the conversation has been dominated by Python. Spring AI changes this situation. It brings the same patterns we know from Spring - dependency injection, auto-configuration, portable abstractions - to AI development.

In January 2026 we built a sample agent application, and we want to share what we learned. The sample AI agent handles conversations with memory, answers questions from internal knowledge bases, uses external APIs, and integrates with existing microservices - all running on Amazon Bedro ck. If you want to try it yourself, the Building AI Agents with Java and Spring AI workshop [1] walks you through typical challenges of Generative AI models and provides step by step solutions with code available on GitHub [2].

A Big Screen Experience for Java Developers & Architects

Wed, 08 Apr 2026 12:00:02 +0000

JCON EUROPE 2026 | April 20–23, 2026 | Cinedom Cologne

Anyone talking about modern software development today can hardly avoid Java. Few technologies have shaped the enterprise world as sustainably, and few communities are as vibrant, diverse, and innovation-driven. This is exactly where JCON comes in: as a meeting point, a platform, and an experiential space for developers from all over the world. With participants from more than 70 countries, JCON has long since become an international gathering. Openness, knowledge sharing, and a strong sense of community remain at its core.

Java Performance Optimization with Agentic AI: Autonomous Diagnostics and Actionable Recommendations

Tue, 07 Apr 2026 07:00:01 +0000

Java performance diagnosis in production is manual, slow, and requires deep expertise. You get a Grafana alert, grab a thread dump, download a JFR recording, open it in JDK Mission Control, stare at flamegraphs, correlate with metrics — hours of work per incident. Most teams don’t have a dedicated performance engineer, so alerts get ignored or result in generic “add more replicas” responses.

We built a system that does this autonomously. When a monitoring alert fires, it collects profiling data and thread dumps, extracts runtime metrics, generates flamegraphs, and sends everything to an AI model that produces a structured performance report — including root cause analysis and concrete code fixes with file paths and line numbers from the actual source repository. The pipeline runs on Kubernetes, triggered by Grafana webhooks, with results stored in Amazon S3.

10 Docker Commandos: Docker Commands to Hunt the Predator

Thu, 19 Mar 2026 07:00:01 +0000

Whose day is it on Tuesday?

I mean, Wednesday is Odin’s day, Thursday is Thor’s day, and Friday is Frigg’s day, or Freya’s, depending on who you ask. But what about Tuesday? Who is the god of Tuesday?

Odin = Wednesday Thor = Thursday Frigg = Friday

It’s Týr, the god of war and justice. In Norse mythology, Týr is known for his bravery and sacrifice, as he lost his hand to the monstrous wolf Fenrir.

JCON Meets Enterprise AI - From Basics to Production

Thu, 29 Jan 2026 12:00:01 +0000

From April 20–23, 2026, the European Java community will once again gather in Cologne for JCON EUROPE 2026. Taking place at the Cinedom multiplex cinema, the conference brings together developers, architects, and Java enthusiasts for four days of knowledge sharing, inspiration, and real-world experience — all on the big screen.

Under the motto “Big screen. Big community. Big AI.”, JCON EUROPE 2026 offers an in-person program running daily from 9:00 to 18:00 (CEST), combining technical depth with a strong community focus.

Code. Collaboration. Community.

Wed, 24 Dec 2025 07:00:02 +0000

JCON USA @ IBM TechXchange 2025 – where the spirit of Java found a new home in Orlando.

When the JCON team announced they were bringing their renowned Java conference series across the Atlantic, expectations were high. Known for its lively spirit and deep technical content, JCON Europe has become a must-attend event for Java developers. Its first U.S. edition – JCON USA @ IBM TechXchange 2025 – not only met those expectations but exceeded them, uniting Java professionals from around the world under one roof in Orlando.

Enterprise Java Deployment Simplified with Payara Qube's New, Unified Offering

Mon, 27 Oct 2025 12:00:00 +0000

Payara Services, a leading vendor of enterprise Java technologies, is aligning Payara Cloud with the Payara Qube Java application deployment runtime.

Put events in the driver seat to manage your Java anywhere

Wed, 08 Oct 2025 07:00:01 +0000

Managing a multi-datacenter VM based or an Edge server executing Java applications is not a simple task and can become even more challenging as the complexity of the hosted app grows. If a pristine installation runs without a hitch, after a while, recurring problems appear and what is called nowadays “Day One” operations take the front seat. Obviously, those are the struggles facing any modern IT infrastructure, and while the target could not be more clear and defined (a functional system with zero or minimum downtime), yet the crucible, how to achieve it, may not be evident.

Improving Platform Observability with Distributed Tracing and OpenTelemetry

Mon, 22 Sep 2025 07:00:01 +0000

Observability has become crucial for modern applications. Distributed tracing, in particular, is essential for diagnosing issues within complex transactions. OpenTelemetry has emerged as the indispensable standard in this field. This article explores the fundamentals of distributed tracing, its implementation, and its impacts.

In a context where applications are increasingly complex, it is crucial to be able to observe each transaction in detail to quickly identify problems and ensure continuous evolution of the platform. Among the three main pillars of observability—logs, metrics, and traces—traces are often less known but equally essential.

Java at Eclipse: Honoring the Legacy, Securing the Future of Open Source Innovation

Wed, 03 Sep 2025 07:00:01 +0000

Java changed software development and reshaped open source innovation forever, but its future was uncertain for a while. Would it remain an innovative force, or would closed governance and slow progress relegate it to history? Enter the Eclipse Foundation, where the future of open source Java was reimagined.

Java’s journey famously began in the mid-1990s, revolutionising software development with its “write once, run anywhere” promise. Originally, Java, the language, was called “Oak,” a name chosen by its creator, James Gosling, after an oak tree outside his office. Oak trees are known for their deep roots and longevity, much like Java, which has remained a cornerstone of software development for decades. While the name was later changed due to trademark issues, its original symbolism reflects Java’s foundational role in modern computing: a language built to be powerful, adaptable, and enduring. Open-sourced by Oracle in 2007, it has become the backbone of enterprise applications, cloud computing, and mobile development.

Modernize Java Applications with Amazon EKS: A Cloud-Native Approach

Tue, 19 Aug 2025 07:00:01 +0000

Cloud-native development has become the cornerstone of modern application development, with containerization leading the charge in deployment strategies. For Java developers and enterprises with significant Java investments, the journey to cloud-native architecture presents both opportunities and challenges. This article explores how Amazon EKS, combined with cutting-edge technologies like Coordinated Restore at Checkpoint (CRaC) and Quarkus, is revolutionizing Java application deployment in the cloud.

Amazon Elastic Kubernetes Service (Amazon EKS) is a fully managed Kubernetes service that enables customers to run Kubernetes seamlessly in both AWS Cloud and on-premises data centers. In the cloud, Amazon EKS automates Kubernetes cluster infrastructure management. This is essential for scheduling containers, managing application availability, dynamically scaling resources, optimizing compute, storing cluster data, and performing other critical functions. With Amazon EKS, customers can leverage the robust performance, scalability, reliability, and availability of AWS infrastructure, as well as natively integrate with AWS networking, security, and storage services. To simplify running Kubernetes in on-premises environments, customers can use the same Amazon EKS clusters, features, and tools to run nodes on AWS Outposts or their own infrastructure, or customers can use Amazon EKS Anywhere for self-contained, air-gapped environments.

Demystifying Software Architecture: Styles/Patterns - PART 1

Thu, 14 Aug 2025 07:00:01 +0000

Whether you’re watching a gripping documentary on Netflix or any other OTT platform, witnessing a nail-biting Test match at Old Trafford, or placing an order on an e-commerce platform, you’re experiencing the result of great software architecture in action.

I find it fascinating to explore the powerful software architectures that make modern applications so reliable and scalable.

These real-time, large-scale systems handle pressure, recover from failures, and scale effortlessly because engineers design them with resilience, availability, fault tolerance, scalability, robustness, performance, recoverability, and continuity in mind.

How to Develop, Run and Optimize Quarkus Web Application on AWS Lambda

Tue, 05 Aug 2025 07:00:03 +0000

What will We explore and learn in this article?

In this article, we will explore some ways to develop, deploy and run applications on AWS Lambda using Quarkus framework. Of course, we will measure performance (the cold and warm start times) of the Lambda function. We will also show how we can optimise performance of Lambda functions using Lambda SnapStart (including various priming techniques) and GraalVM Native Image deployed as AWS Lambda Custom Runtime. You can find code examples for the whole series in my GitHub Account.

Is Java Cloud Native?

Tue, 29 Jul 2025 07:00:02 +0000

With the 30th anniversary just around the corner, Java is still going strong. Backward compatibility, active community, and numerous tools facilitate Java development and make the platform a natural choice for enterprise applications.

And yet, when it comes to the cloud, Go, JavaScript, Ruby, Kotlin, or Rust tend to be a preferred choice for their speed, concurrency, and ease-of-use. WebAssembly or Wasm is also gaining popularity when it comes to web development. But IT teams often take Java’s ability to produce cloud-native programs with a grain of salt.

How to Containerize a Java Application Securely

Thu, 03 Jul 2025 07:00:01 +0000

TL;DR

Containerization or Dockerization is the process of packaging an application and its dependencies into a Docker image.
It’s beneficial to containerize your Java application as it provides a consistent environment for development, testing, and deployment.
Java is a compiled language, so your Docker image will only contain the compiled Java bytecode and the Java runtime environment.
Supply-chain security is the process of checking the dependencies in your application for vulnerabilities.
SBOM (Software Bill of Materials) is a list of all the dependencies in your application.
It’s a good practice to generate an SBOM when building your Docker image and push it to a registry for later reference.

Technical Requirements

In this article, we will use the following tools:

Hitchhiker's Guide to Java Performance

Mon, 07 Apr 2025 11:43:20 +0000

The Past, The Present and The Future

Over the last 30 years, Java has evolved from an exotic “write once, run anywhere” language to one of the dominant platforms for software development worldwide. In the early years, Java was justifiably considered slow compared to languages such as C/C++, which was mainly due to the initial interpreter approach. However, the last three decades have shown that the VM concept with HotSpot’s adaptive optimization is clearly the superior approach.
by Ingo Düppe

Building a better Mouse Trap - web crawling with Temporal

Thu, 03 Oct 2024 14:26:30 +0000

For various reasons, I’ve been looking at Temporal lately. It’s one of those open-source projects with some great users - think Netflix, Uber, etc.- yet has less visibility in the Java community than expected.

I hope to raise its profile here.

Before I talk about Temporal, I’ll cover my particular use case. Stay with me; this needs to be detailed.

Background

A side project I have is to create a Java API comparison tool that can be used to check if moving from version A to version B of a dependency will have issues. I’m looking beyond the simple class-to-class comparison, I intend to check for a more holistic view to find runtime and compile time problems that might occur within the dependency tree if you upgrade something.

Exploring Cost-Effective Solutions for Stateful Rest Services

Tue, 30 Jul 2024 12:30:00 +0000

A cost-effective approach to implementing stateful REST services using IBM Cloud Code Engine, EclipseStore, and IBM Cloud Object Storage, highlighting their integration and scalability benefits for enterprise applications.

Minimize Costs by Utilizing Cloud Storage with Spring-Data-Eclipse-Store

Mon, 29 Jul 2024 07:52:28 +0000

How to save money storing data in Cloud blob-stores instead of expensive databases through the use of the open-source Spring-Data-Eclipse-Store library.