Friends of OpenJDK Today

In distributed systems, high availability is not a luxury—it’s a necessity. And one of the very important parts of that is automatic failovers. What are automatic failovers and how do they work? Let’s see today! These concepts are actually similar …

Table of Contents What are GitHub workflows?GitHub ActionsChoosing the right ActionKnow your ActionsPin your dependency versionUse the job summaryUnderstand workflows’ lifecycleTest locallySummary I’ve quite a lengthy experience with GitHub workflows, but not up to the point where I can claim …

Table of Contents git pushgit rebase Git has become a fundamental part of our developers’ daily routine that it’s hard to remember our lives without it. And yet, most of us use a limited set of commands and options. Today, …

Let’s be real – keeping up with the pace of software development today is intense. New frameworks pop up and the push for faster, better, and more secure code never stops. This article is all about cutting through the buzz and looking …

Table of Contents What is Liquibase?What is MongoDB?Setting up a local MongoDB instance on WindowsUse Liquibase with MongoDBPrerequisitesInstall supporting driversConnection configurationConnection testHands-on execution steps detailed1. Create project and add files2. Project structure in VS Code3. Lifecycle of Liquibase4. Verify the …

The first and second newsletters introduced a 14-day cadence, and even though it is the holiday season for many of us, we are sticking to the promised period. The current newsletter vol.3, brings a collection of valuable articles focusing on …

Table of Contents GPT-5 is on top at every performance level and every price point… but it’s no speed demonPerformance by task lengthOther observationsImplications for buildersA Note on Reasoning Introducing the Brokk Power Ranking The Brokk Power Ranking is a …

Table of Contents The promise of OpenTelemetryGotchasPath or no path?Python loggingMicrometer TracingQuarkusSummary Last week, I described several approaches to OpenTelemetry on the JVM, their requirements, and their different results. This week, I want to highlight several gotchas found across stacks …

Table of Contents CommonalitiesRunning the OpenTelemetry AgentMicrometer Tracing on Spring BootOpenTelemetry Spring Boot StarterQuarkusDiscussion You may know I’m a big fan of OpenTelemetry. I recently finished developing a master class for the YOW! conference at the end of the year. …

Table of Contents Understanding the “Airport” domainModeling the core Airport domain in JavaIdentifying aggregates and entitiesImplementing entities and value objectsBounded contexts and modularizationRepositories, domain services, and factoriesRepositoriesDomain servicesFactoriesApplication layer and integrationTesting and evolving the modelComplete DDD implementation source codeTesting scenarios …

Table of Contents What Are Resource Policies?Why Use Them?Available CapabilitiesApplying Resource Policies with Terraform🔐 Example 1: Allow clusters only on AWS🌐 Example 2: Block public IPs (0.0.0.0/0)🔒 Example 3: Enforce TLS 1.2 or higherValidation and Testing🚫 Attempt to create a …

Table of Contents I remember the first time I saw a diagram of a neuron (Img.1.). I was a school kid, and among other hobbies, I was interested in the human brain, it fascinated me. I borrowed a book from …