Markus

Markus is a Java Champion, former Java EE Expert Group member, founder of JavaLand, reputed speaker at Java conferences around the world, and a very well known figure in the Enterprise Java world.

Munich, Germany Joined on Mar 26, 2024 https://www.the-main-thread.com/

Work

IBM Research

Markus

Oct 3

Spec-Driven Development: What Should Survive After Shipping?

#ai #architecture #programming #productivity

6 min read

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Markus

Oct 3

Give Your AI Coding Agent the Context It Needs to Build and Test

#ai #agents #java #programming

6 min read

Markus

Oct 6

Turn Your GitHub Contributions Into a City With Java and Quarkus

#java #quarkus #github #opensource

8 min read

Markus

Oct 3

Quarkus and Chart.js: Build Your First Exoplanet Dashboard

#java #chartjs #quarkus

38 min read

Markus

Jun 18

AI Coding Governance for Real Software Teams

#ai #coding #software

6 min read

Markus

Jun 18

Quarkus AWS Lambda HTTP: Live-Code Serverless on Localhost

#java #aws #serverless

13 min read

Markus

Jun 18

Quarkus JFR: Find Performance Bugs Before Users Do

#java #quarkus #bugs

12 min read

Markus

Jun 7

Model Routing in Quarkus LangChain4j with Ollama

#java #quarkus #ollama

12 min read

Markus

Jun 7

What Should Go in an AGENTS.md File?

#ai #agents

6 min read

Markus

May 27

Quarkus Graceful Shutdown That Holds Up During Rolling Deploys

#java #quarkus #kubernetes

8 min read

Markus

May 27

Teach a Local Model an Agent Command With LoRA

#java #ai #lora

22 min read

Markus

May 27

Who Owns AI-Generated Code When It Breaks?

#ai #softwareengineering #leadership

8 min read

Markus

May 27

Quarkus JAR Tree Shaking: Trim Dead Weight From JVM Builds

#java #quarkus

10 min read

Markus

May 14

The Senior Developer's New Job Is Saying No

#ai #career #development

8 min read

Markus

May 14

Stop Measuring AI by How Much You Use It

#ai #token #cost #developer

10 min read

Markus

Mar 30

Build a Real-Time ISS Tracker with Quarkus, SSE, and Qute

#java #iss #nasa

16 min read

Markus

Mar 29

Quarkus MCP Testing for Java Developers: McpAssured + IBM Bob

#java #mcp #test

16 min read

Markus

Mar 29

Mock External APIs in Quarkus with WireMock: A Hands-On Guide

#java #wiremock #testing

16 min read

Markus

Mar 21

CLI Tools vs MCP: The Hidden Architecture Behind AI Agents

#ai #cli #mcp

12 min read

Markus

Mar 15

Building a Terminal Substack Reader with TamboUI

#java #tui #jbang #cli

13 min read

Markus

Mar 10

AI can generate code. But...

#ai #ibm #techcon #java

1 min read

Markus

Mar 23

Build a Real MCP Server in Java with Quarkus

#java #mcp #ai #quarkus

12 min read

Markus

Mar 1

Exposing MCP from Legacy Java: Architecture Patterns That Actually Scale

#java #architecture #ai #mcp

3 min read

Markus

Mar 1

Why Senior Java Developers Are Using AI Coding Tools Wrong

#java #productivity #ai #softwareengineering

3 min read

Markus

Feb 18

Local Image Generation in Java (Yes, Really): FLUX.2 + Quarkus + FFM

#java #quarkus #ai #ffm

3 min read

Markus

Feb 18

AI-Assisted Development for Java Developers: The Specification Problem Is Back

#ai #development #devrel

5 min read

Markus

Feb 18

The End of “Python for Scripts, Java for Systems” (Maybe)

#java #python #productivity #tooling

2 min read

Markus

Feb 18

Your Second Reactive Messaging App: The One That Survives Production

#java #quarkus #kafka #eventdriven

3 min read

Markus

Feb 18

Java Meets Whisper: Speech-to-Text Without Python (and Without JNI Pain)

#java #quarkus #ai #speech

3 min read

Markus

Dec 26 '25

Building Event-Driven Pipelines in Java Without Blocking Everything

#java #reactive #eventdriven

3 min read

Markus

Dec 23 '25

A Secret Santa API Is a Better Backend Exercise Than It Sounds

#java #architecture #api

2 min read

Markus

Dec 23 '25

Kubernetes for Java Developers Without the Pain

#kubernetes #k8s #java #guide

2 min read

Markus

Dec 26 '25

Versioning REST APIs in Java Without Breaking Clients

#api #architecture

3 min read

Markus

Dec 13 '25

Managing Large Java Monorepos with a Dynamic GitHub Actions Matrix

#github #monorepo #actions #cicd

3 min read

Markus

Dec 13 '25

Calling Native Libraries from Java with the Foreign Function & Memory API

#java #architecture #ffm #backend

4 min read

Markus

Dec 13 '25

Designing Framework-Aware AI Coding Modes for Java Projects

#java #ai #developer

4 min read

Markus

Oct 20 '25

When to Deprecate APIs: The Complete Guide for Java Architects and Quarkus Developers

#java #api #quarkus

1 min read

Markus

Oct 15 '25

5 Benefits of AI-Powered Coding Every Java Architect Should Know

#java #ai #coding

3 min read

Markus

Oct 13 '25

From Spring to Quarkus: Building SOAP Services with Shared Contracts and DTOs

#spring #quarkus #java #soap

6 min read

Markus

Oct 13 '25

Building Strong Data Foundations with Quarkus: A Beginner’s Journey in Persistence

#java #quarkus #hibernate #jpa

4 min read

Markus

Oct 3 '25

My 2025 Summer Retrospective: A Guide to AI-Powered, Cloud-Native Java with Quarkus

#java #programming #ai #cloud

3 min read

Markus

Oct 3 '25

Java Security Demystified: Building TOTP & TAN Tokens with Quarkus

#java #security #tutorial

2 min read

Markus

Oct 3 '25

Mastering API Testing with Quarkus: From RestAssured to Pact and jqwik

#java #quarkus #security

1 min read

Markus

Sep 21 '25

Quarkus Banner Studio: Build ASCII Art Banners with Qute and FIGlet

#java #quarkus #ascii #banner

12 min read

Markus

Sep 19 '25

Remote, Office, and Work From Home: Three Different Worlds We Keep Mixing Up

#worklife #rto #office #wfh

5 min read

Markus

Sep 12 '25

Mutation Testing in Quarkus: Go Beyond Code Coverage

#java #testing #pit #quarkus

8 min read

Markus

Sep 15 '25

Your First Quarkus App: A Simple Java REST API in Minutes

#java #quarkus #rest

5 min read

Markus

Sep 14 '25

Mastering Unicode in Java: Build World-Ready REST APIs with Quarkus

#java #quarkus #unicode

9 min read

Markus

Sep 14 '25

My Journey with "Vibe Coding" and the AI Partner I Learned Not to Trust

#ai #vibecoding #ide

6 min read

Markus

Sep 1 '25

Enterprise Java Supply Chains: Spring, Quarkus, Tanzu, and RHBQ Compared

#java #rhbq #tanzu #spring

10 min read

Markus

Sep 1 '25

Choosing Your Fighter: Mastering @Qualifier in Quarkus CDI

#java #quarkus #cdi #qualifier

2 min read

Markus

Aug 25 '25

Dynamic Role-Based Access in Quarkus: Fine-Grained Security Without Redeploys

#java #quarkus #rbac

12 min read

Markus

Aug 11 '25

SFTP Meets PostgreSQL: Building a Smart File Upload System with Quarkus Dev Services

#java #nlp #ai #textanalysis

6 min read

Markus

Aug 9 '25

Charting Twain: Building a Character Interaction Graph with Quarkus, OpenNLP, and a local Ollama Model

#java #quarkus #llm #ai

10 min read

Markus

Aug 11 '25

Counting Millions of Things with Kilobytes

#java

6 min read

Markus

Aug 4 '25

Build a Full-Stack Todo App with Quarkus, Panache, and Qute

#java #quarkus #todo #beginners

5 min read

Markus

Jul 31 '25

Stop Leaking Stack Traces: Mastering RFC 7807 Error Handling in Quarkus

#java #rest #rfc7807

6 min read

Markus

Jul 30 '25

Build Your First AI Agent in Java: Quarkus, Langchain4j, and the A2A SDK

#java #quarkus #ai #a2a

7 min read

Markus

Jul 23 '25

Master AI-Powered DNS Lookups with Quarkus and Langchain4j

#java #dns #opensource #ai

5 min read

Markus

Jul 25 '25

Mastering AI Tool-Calling with Java: Build Your Own Dungeon Master with Quarkus and LangChain4j

#java #dnd #aitools #aiml

7 min read

Two Year Club

One Year Club

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