LangChain4J

The LangChain4j Proficiency Exam: 50 Questions for Senior Java Devs

Master LangChain4j with 50 expert-curated interview questions. Covers RAG pipelines, AI Services, Tool Support, and Memory management in Quarkus and…

Feb 5 • Markus Eisele

Building a Secure Hybrid RAG Pipeline in Java with Quarkus and JWT

Protect enterprise data by enforcing user-scoped SQL and vector retrieval with LangChain4j.

Jan 6 • Markus Eisele

High-Throughput AI Video Processing with Quarkus and LangChain4j

A practical Java guide to mixing JavaCV face detection and multimodal LLM sentiment in one real-time pipeline.

Dec 2, 2025 • Markus Eisele

How to Build a Stateful AI Chat System in Java with Quarkus and LangChain4j

Learn how to implement sliding-window memory, JPA persistence, and multi-session chat for reliable LLM applications.

Dec 1, 2025 • Markus Eisele

Semantic Caching for Java: Turbocharge Your Quarkus + LangChain4j LLM Apps

A practical hands-onLearn how to add fast, meaning-aware caching to your local LLM workflows using pgvector, embeddings, and a clean proxy wrapper…

Nov 25, 2025 • Markus Eisele

Building a Real-Time AI Progress Tracker with Quarkus, LangChain4j, Ollama, and Granite 4

Turn your LLM pipeline into a transparent, step-by-step experience that shows retrieval, prompt creation, and model calls in real time. Powered by…

Oct 21, 2025 • Markus Eisele

Securing LLM Responses in Java: Guardrails with Quarkus and LangChain4j

Learn how to protect your AI applications from prompt injection, unsafe outputs, and risky prompts with practical guardrail patterns in Quarkus.

Oct 12, 2025 • Markus Eisele

Building a Museum App with Quarkus, LangChain4j, and MCP

How Java developers can combine vision AI, real-time context, and modern Quarkus features to create privacy-aware, engaging applications.

Oct 9, 2025 • Markus Eisele

Building an AI-Powered PDF Processing Pipeline with Quarkus, Camel, and LangChain4j

Securely scan, extract, and summarize documents using ClamAV, Camel routes, and local LLMs with Ollama.

Oct 7, 2025 • Markus Eisele

From GO-BPMN to Agentic AI: Why Goal-Oriented Modeling Matters Again

How lessons from Tropos, Gaia, and AUML help modern Java architects model adaptive, goal-driven, and agentic AI systems with Quarkus.

Oct 5, 2025 • Markus Eisele

Supercharging Java AI: Building MCP Servers and Clients with Quarkus, LangChain4j, and Ollama

Learn how to connect local LLMs to real-world tools using the Model Context Protocol, with a full hands-on Quarkus tutorial for Java developers.

Sep 30, 2025 • Markus Eisele

Your Path to LangChain4j Mastery: A Beginner’s Journey for Java Developers

Step-by-step learning map to build AI-powered applications with Quarkus and LangChain4j. Go from first prompts to enterprise use cases.

Sep 29, 2025 • Markus Eisele

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