Geertjan Wielenga

Table of Contents OverviewWhat makes a process a good candidate for durability?Spring PetClinic as an Exploratory DeviceStep 1 — Download the Spring PetClinic sourceStep 2 — Analyze the application for durability candidates2a — Analysis: processes that are good candidates for …

Table of Contents The pre-database era, replayedThe write-ahead log, but for your local variablesTransactions that span monthsThe same pattern, elsewhere in the stackWhat this means for your Java codeOnce upon a time, applications managed their own data files. Every program …

Table of Contents The problem: we all became distributed systems developersDurable execution: crash-proof, not crash-preventingHow it actually works: history replay, not snapshotsThe moving partsSeeing is believingWhy this changes how you write softwareWhen developers first hear about Temporal, they tend to …

Table of Contents The question nobody thinks to askWhy this is more than a curiosityThe setupWhat I started withStep 1: Download the agentStep 2: Edit netbeans.confStep 3: Start NetBeansWhat arrives in Dash0Logs: the IDE’s internal monologueSpans: every outbound HTTP callJVM …

Table of Contents Core banking, reimagined as “AI-native”Payments and money movementLending, credit, and collectionsRisk, fraud, and complianceBuild-your-own-agent platforms and toolingData and infrastructure underneath it allContent, language, and trustServices and talentConclusionsI walked the floor at Money20/20 in Amsterdam with a simple …

Table of Contents The Super Awesome PromptWhy This Prompt WorksAfter The Agent FinishesFollow Up Prompts You’ll Likely WantHere’s a super awesome prompt (e.g., for Claude Code) that you can use with https://github.com/dash0hq/agent-skills, the free collection of skills for AI coding …

Table of Contents YouTubePodcast AppsContentFoojay.io, the website for the Friends of OpenJDK, is turning six years old. To celebrate, Frank Delporte headed to JCON in Cologne, Germany, and sat down with twelve members of the Java community to talk about …

Table of Contents Before: A Service with No ObservabilityPart 1: Build the ApplicationPart 2: Containerize and PublishPart 3: Deploy to KubernetesPart 4: Generate Traffic (the Before State)After: Adding Observability with the Dash0 OperatorPart 5: Install the Dash0 OperatorPart 6: Configure …

Java developers from around the world are writing a book about a question that’s becoming impossible to ignore: how do we write software that’s good for both our projects and the planet? Sustainability for Java Developers: Towards an Understanding of …