Devops on JAVAPRO International

Paketo Buildpacks: ready for Java 26 & more!

Thu, 02 Jul 2026 07:00:02 +0000

Paketo Buildpacks, the default way to create container images with Spring Boot, will include support for Java 26 the same week it will be released in major OpenJDK distributions (Oracle, BellSoft Liberica, Azul Zulu, etc.)
Let’s take this as an opportunity to (re)discover what Paketo Buildpacks are and what they allow you to do!

Paketo Buildpacks: Not the Only Buildpacks Around!

A World of Buildpacks

My first memory of using buildpacks dates back to when I worked for a bank around 2020 (yes, that year!) and my team created and maintained a bunch of shell scripts that would copy a templated Dockerfile, add the public certificates from the corporate Certification Authority (CA), and then build the Dockerfile into an image (and even create a Helm chart!); but we soon learned that there were open-source buildpacks that supported most of our use cases!

Stay Updated with Every New Free PDF Edition!

Tue, 30 Jun 2026 08:50:00 +0000

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Download free PDF here: Edition 06/2026 | Autonomous Java

06-2026 | Autonomous Java

Tue, 30 Jun 2026 07:00:02 +0000

DOWNLOAD

CORE JAVA
▪️Learning Java Automation the SOLID Way: A Beginner’s Guide to Learn Page Object Model with Java SOLID Principles
▪️OpenJ9 GC Policies: How to Choose the Right Collector

API & FRAMEWORKS
▪️Elasticsearch Java SDK: No Magic, Just Solid Design Choices
▪️Java Developers, You’re Already Ready for Blockchain — You Just Don’t Know It Yet
▪️Connecting Java Reinforcement Learning to Python Gymnasium
▪️Beyond Text Search: A Smarter Way to Understand Your Code
▪️The 3 A.M. Deadlock

Always Up to Date - with Every New Free PDF Edition!

Thu, 28 May 2026 12:00:00 +0000

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‘From AI as a Feature to AI as Infrastructure’ – download free PDF here!

OpenFeature - one flag to rule them all!

Thu, 14 May 2026 07:00:01 +0000

Feature flags and where to find them

What are feature flags?

To keep it simple it’s a way to change the system behaviour at runtime without hassle.

Note: And if this “refresher” was the only theoretical thing you wanted to know or if you already use feature flags and want to jump straight to code/ OpenFeature demo, feel free to do so; otherwise, please bear with me for another couple of text pages.

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.

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.

Always Up to Date - with Every New Free PDF Edition!

Thu, 26 Mar 2026 12:05:02 +0000

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‘From Coder To System Designer’ – download free PDF here!

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.

Always Up to Date - with Every New Free PDF Edition!

Tue, 09 Dec 2025 10:37:19 +0000

Have You Enjoyed the Previous Part of Our Special Edition ‘Java 25’?
Now Part 2 is here — and it’s packed with even more expert insights, community voices, and Java highlights from the past 30 years & the Java 25 release.

Java Meets the Future: How Quarkus Seamlessly Combines Architecture, Performance, and Cloud-Native

Thu, 04 Dec 2025 07:00:01 +0000

Given the increasing ubiquity of digital technologies, which are becoming increasingly and naturally embedded in our environment, the essential question arises as to what role Java will play in this future development of IT systems. Mark Weiser, pioneer of ubiquitous computing, described this technological paradigm shift as follows: “The best technology is the one we don’t even notice because it naturally enriches our everyday lives.” (paraphrased from [LMU19]).

Ubiquitous computing is already demonstrating how technology is becoming omnipresent and seamlessly integrated into our environment as an invisible companion. A key factor here is the almost universal access to networks (such as Wi-Fi), which is increasingly becoming standard infrastructure internationally. This access enables the real-time networking of smart devices, from smart homes to wearables, and forms the basis for technologies that work intuitively in the background and communicate with each other seamlessly without disruptive interference. In addition, ubiquitous computing promotes an ever-closer symbiosis between humans and machines, in which new technologies are emerging that are increasingly replacing classic interfaces to the digital world such as smartphones and tablets. Devices such as mixed reality glasses (e.g. Meta Quest or Apple Vision Pro) open up a new form of interaction in which digital information is projected directly and contextually into the field of vision. The goal is no longer just general interaction, but rather the precise adaptation of digital content to the individual needs of the user. This development leads to the concept of hyper-personalization: systems respond in real time to location, preferences, and goals, providing tailored information, entertainment, or support in everyday life. This points to a future in which digital experiences are seamlessly integrated into personal life.

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.

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.

Actionable Intelligence from Running JVMs

Thu, 10 Jul 2025 07:00:01 +0000

Your JVMs are Pretty Smart - You Should Listen to Them

People don’t watch or listen to their JVMs, which is a shame because they have a lot to teach.

Background: Developer Productivity

Censuswide recently performed a survey of developers and asked them to divide up how they spend their time in aggregate. The mean results appear below:

Columns 2, 4, and 5 are interesting for our discussion here and they tell us that the surveyed developers spend over 40% of their time on average on code maintenance, testing & quality assurance, and vulnerability management activities. This article discusses how deriving runtime intelligence from your JVMs can help you shrink columns 2 and 5 (and also take column 4 down a notch) so that you can spend more time in column 1. :)

Java in Critical Operations: How Custom Development Ensures Control and Secures Mission-Critical Systems

Mon, 02 Jun 2025 08:15:19 +0000

When IT fails, no one notices—until everyone does.
Whether in hospitals, energy grids, or airports, stable operation of digital systems in safety-critical environments is not an option, but a strict requirement. This is where infrastructure must prove its resilience, scalability, and independence in the face of real-world crises.

A prime example is Fraport AG, operator of one of Europe’s largest aviation hubs. When baggage goes missing or safety-critical information is delayed, it’s not just individual passengers’ vacations that are at risk—the operational stability of the entire airport is on the line. Behind the scenes of such a hub runs an extremely complex digital infrastructure that must operate reliably 24/7, despite increasing demands, ageing legacy systems, and tightening security regulations.

Move Fast, Break Laws: AI, Open Source and Devs (Part 4)

Thu, 10 Apr 2025 07:00:02 +0000

The software development landscape is rapidly changing, with legislation emerging as a key driver of industry trends. As our reliance on software and AI grows, so does our vulnerability to cybercrime, which is now a multi-trillion-dollar problem. This has caught the attention of regulators worldwide.

This article explains the various regulatory efforts in play and summarises actions that developers and executives should consider as they get to grips with 2025 - the year of software legislation

Move Fast, Break Laws: AI, Open Source and Devs (Part 3)

Tue, 08 Apr 2025 07:00:01 +0000

Background

Part 1 covered the background, what a software supply chain is and thoughts on AI and open source.

Part 2 explored how governments are working to create legislation and what the current status is.

Move Fast, Break Laws: AI, Open Source and Devs (Part 2)

Thu, 03 Apr 2025 09:56:07 +0000

This article explains the various regulatory efforts in play and summarises actions that developers and executives should consider as they get to grips with 2025 - the year of software legislation

Move Fast, Break Laws: AI, Open Source and Devs (Part 1)

Tue, 01 Apr 2025 11:34:21 +0000

This article series explains the various regulatory efforts in play and summarises actions that developers and executives should consider as they prepare for 2025, the year of software legislation.

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.