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Markus Eisele

@myfear.com

2.1K followers 530 following 1.4K posts

Developer, turned to consulting, developer relations, sales, and landed in marketing. Writing books for #Oreilly. Into Java, Kubernetes and such. Legal called to tell you that I'm not officially speaking for IBM.

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Markus Eisele @myfear.com · Aug 12

Big news! The book I co-authored with @natalevinto.bsky.social & Alex Soto, Applied AI for Enterprise Java Development, went into production last week! 📚

Coming this November from @oreilly.bsky.social

www.oreilly.com/library/view...

#AI #Java #Quarkus #LangChain4j #DevBooks

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Markus Eisele @myfear.com · 1h

What's new in Java 25 for developers
Review the stable and preview features in this new LTS release of Java
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#Java #JDK25 #Java25

IBM Developer

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Markus Eisele @myfear.com · 5h

“If an AI agent stumbles on your API, so will your developers.”

Just published: AI-Friendly Java API Design: 9 principles for building APIs that work for humans and agents.
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#Java #APIs #AI

Markus Eisele @myfear.com · 17h

I was looking at commercial applications mostly with that comment. Multi user.

Markus Eisele @myfear.com · 17h

Some exciting new developments happening right now 🥳
#Java #agents #ai

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Markus Eisele @myfear.com · 19h

I've played around with this myself. I think it can be pretty elegant but has to be domain specific www.the-main-thread.com/p/java-ai-se...

Teaching AI to Remember: Inside a Java-Based Semantic Memory System

How Quarkus, LangChain4j, and pgvector power long-term memory for intelligent, context-aware conversations

www.the-main-thread.com

Markus Eisele @myfear.com · 22h

Quarkus MCP server version release - 1.7.0 with WebSocket transport, new API to customize input schema generation for Tools, and more:
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#java #quarkus

Release 1.7.0 · quarkiverse/quarkus-mcp-server

What's Changed build(deps): bump quarkus.version from 3.20.2.2 to 3.27.0 by @dependabot[bot] in #427 build(deps): bump io.swagger.core.v3:swagger-annotations from 2.2.37 to 2.2.38 by @dependabot[b...

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Markus Eisele @myfear.com · 1d

Ever thought about turning your Quarkus museum app into a small gift shop?
In this new tutorial we add:
• REST + Panache
• Qute UI
• Streaming SSE
• MCP tools for LLMs
Read here ➡️ buff.ly/0mO0J3q

#Java #Quarkus #AI

Markus Eisele @myfear.com · 1d

Memory Loophole: Creating a Second Brain for LLMs, Discussion w/ ChatGPT. buff.ly/AWg1C4Y
#llm

Memory Loophole: Creating a Second Brain for LLMs, Discussion w/ ChatGPT.

The discussion was inspired by a Reddit post, and something I’ve really been considering since the memory in ChatGPT is extremely limited, and likely for good reason. I don’t know why I…

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Markus Eisele @myfear.com · 2d

MCP Client and Server with the Java MCP SDK and LangChain4j buff.ly/DhkSLb3
#Java #langchain4j #gemini

MCP Client and Server with the Java MCP SDK and LangChain4j

MCP (Model Context Protocol) makes the buzz these days! MCP is a protocol invented last November by Anthropic, and integrated in Claude Desktop, and in more and more tools and frameworks, to expand…

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Markus Eisele @myfear.com · 2d

New tutorial drop: RSS Integration with Quarkus + Apache Camel

Turn blog feeds into JSON pipelines and expose live author stats with Micrometer & Prometheus. Perfect for Java devs exploring real-time observability.

Read now → buff.ly/yEZVkbX

#Java #Quarkus #Camel #Observability

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Markus Eisele @myfear.com · 2d

MCP Servers, Claude Desktop and fun with PATHs - Emmanuel Bernard buff.ly/N96P3rP
#mcp #claude #genai

MCP Servers, Claude Desktop and fun with PATHs

If you are playing with AI as a developer, you might has heard of Model Context Protocol (MCP) which is a way for an app to connect an LLM with some capabilities like an API, a file explorer, a…

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Markus Eisele @myfear.com · 3d

www.oreilly.com/library/view... ☺️

Applied AI for Enterprise Java Development

As a Java enterprise developer or architect, you know that embracing AI isn't just optional—it's critical to keeping your competitive edge. The question is, how can you skillfully... - Selection from ...

www.oreilly.com

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Markus Eisele @myfear.com · 3d

Just dropped a new article:
5 Benefits of AI-Powered Coding for Java Architects

From vibe coding → to real enterprise impact.
This isn’t hype — it’s how Cursor, Windsurf & Roo Code are changing Java workflows.

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#Java #AI #Coding

Markus Eisele @myfear.com · 3d

"Keep calm and let the garbage collector handle your weekend mistakes."
#MondayMotivation #Java #qotd

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Markus Eisele @myfear.com · 3d

"Why is Quarkus 600x times slower than {INSERT_FRAMEWORK_HERE}
A reactive CRUD Performance: A Case Study buff.ly/EczvmT1
#quarkus #Java #performance

Markus Eisele @myfear.com · 3d

#OpenRewrite v8.63.0 is out! 🍂

- Spring Boot to #Quarkus migration recipes
- Jackson v3 upgrade recipes
- Support additional #Maven (re)sources
- JUnit 5, 6 & Jupiter best practices
- Expanded Hibernate 7 migration
- Many more fixes

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#Java

Release v3.16.0 · openrewrite/rewrite-recipe-bom

What's Changed Incorporates the latest versions of OpenRewrite (v8.63.0), the rewrite-gradle-plugin (v7.18.0), and the rewrite-maven-plugin (v6.21.0) to improve code parsing accuracy and recipe ex...

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Markus Eisele @myfear.com · 4d

LLMs can be reckless. Java developers need guardrails.
In this tutorial, I show how to secure inputs and outputs using Quarkus + LangChain4j.

Read here: buff.ly/dsvG3DU

#Java #Quarkus #LangChain4j #AI

Markus Eisele @myfear.com · 5d

Java 25's new CPU-Time Profiler (1) buff.ly/LKLEmJ4
#Java #jdk25

Java 25's new CPU-Time Profiler (1) - Mostly nerdless

Learn all about Java 25's new CPU-time profiler and why it matters in this weeks blog post from the creator himself.

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Markus Eisele @myfear.com · 5d

APIs. Kafka. LLMs.
Zero Trust touches them all.

My latest piece shows how Java architects can apply Zero Trust principles end-to-end using Quarkus.

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#Java #Quarkus #ZeroTrust #Kafka #AI

Reposted by Markus Eisele

Cowtown Coder @cowtowncoder.bsky.social · 5d

I blogged again: cowtowncoder.medium.com/jackson-3-0-...

Jackson 3.0.0 (GA) released

(October 3, 2025)

cowtowncoder.medium.com

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Markus Eisele @myfear.com · 5d

#serena: a powerful coding agent with semantic retrieval and editing capabilities (MCP server).

Serena is an interesting idea of using LSP servers and provide MCP that works with them enabling MCP apps to have access to symbolic lookup.

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GitHub - oraios/serena: a powerful coding agent with semantic retrieval and editing capabilities (MCP server)

a powerful coding agent with semantic retrieval and editing capabilities (MCP server) - oraios/serena

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Markus Eisele @myfear.com · 6d

Ever co-presented with your boss? It’s part storytelling, part demo-building, part diplomacy.
In my latest piece, I share the lessons I learned while prepping a TechXchange talk with my boss - plus why this is career development for Java devs.
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#Java #Quarkus #AI #DeveloperExperience

Markus Eisele @myfear.com · 6d

How to work in tech when your job isn't safe | sean goedecke

Tl;dr trust, respect, and helpfulness are thrown out the window and work turns into an ego driven, self centered adventure.

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How to work in tech when your job isn't safe

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Markus Eisele @myfear.com · 7d

The future of Java and AI
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#Java

IBM Developer

IBM Developer is your one-stop location for getting hands-on training and learning in-demand skills on relevant technologies such as generative AI, data science, AI, and open source.

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Markus Eisele @myfear.com · 7d

Ever wanted AI to act like your personal museum guide?
With Quarkus, LangChain4j, and MCP, we built a Java demo where visitors:

- identify artworks from photos
- share impressions with selfies
- see live sentiment charts

Read the tutorial: buff.ly/8l6RmKq

#Java #Quarkus #LangChain4j #AI #MCP