Markus Eisele
@myfear.com
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.
Writing books for #Oreilly.
Into Java, Kubernetes and such.
Legal called to tell you that I'm not officially speaking for IBM.
I finally did it — built my own EdWordle-style word cloud generator in Java 😄
Runs on Quarkus, streams PNGs over REST, and has a slick Qute UI to tweak everything live. Super fun project.
If you like fonts, visuals, and creative engineering, check it out 👇
buff.ly/kGIMftv
#java #quarkus #java2d
Runs on Quarkus, streams PNGs over REST, and has a slick Qute UI to tweak everything live. Super fun project.
If you like fonts, visuals, and creative engineering, check it out 👇
buff.ly/kGIMftv
#java #quarkus #java2d
November 26, 2025 at 7:15 AM
I finally did it — built my own EdWordle-style word cloud generator in Java 😄
Runs on Quarkus, streams PNGs over REST, and has a slick Qute UI to tweak everything live. Super fun project.
If you like fonts, visuals, and creative engineering, check it out 👇
buff.ly/kGIMftv
#java #quarkus #java2d
Runs on Quarkus, streams PNGs over REST, and has a slick Qute UI to tweak everything live. Super fun project.
If you like fonts, visuals, and creative engineering, check it out 👇
buff.ly/kGIMftv
#java #quarkus #java2d
Semantic Caching for Java: Turbocharge Your Quarkus + LangChain4j LLM Apps buff.ly/1w7Q37S
November 25, 2025 at 7:15 AM
Semantic Caching for Java: Turbocharge Your Quarkus + LangChain4j LLM Apps buff.ly/1w7Q37S
AI Coding Modes for Bob + Quarkus Dev Mode
How to turn AI assistants into real teammates:
• custom modes
• rule packs as skills
• live MCP integration
If you're a Java dev or architect thinking about AI in your workflow, this is the future.
buff.ly/B8v77EH
#Java #Quarkus #AI #Bob #DevMode
How to turn AI assistants into real teammates:
• custom modes
• rule packs as skills
• live MCP integration
If you're a Java dev or architect thinking about AI in your workflow, this is the future.
buff.ly/B8v77EH
#Java #Quarkus #AI #Bob #DevMode
November 24, 2025 at 7:15 AM
Still mapping Java enums the old way?
Quarkus 3 + Hibernate 7 now make it effortless with @EnumeratedValue.
No converters. No magic numbers. Just clean, type-safe mapping that works.
Full tutorial →
buff.ly/VmlGHtW
#JavaDevelopers #Quarkus #HibernateORM #JPA
Quarkus 3 + Hibernate 7 now make it effortless with @EnumeratedValue.
No converters. No magic numbers. Just clean, type-safe mapping that works.
Full tutorial →
buff.ly/VmlGHtW
#JavaDevelopers #Quarkus #HibernateORM #JPA
November 23, 2025 at 7:15 AM
Still mapping Java enums the old way?
Quarkus 3 + Hibernate 7 now make it effortless with @EnumeratedValue.
No converters. No magic numbers. Just clean, type-safe mapping that works.
Full tutorial →
buff.ly/VmlGHtW
#JavaDevelopers #Quarkus #HibernateORM #JPA
Quarkus 3 + Hibernate 7 now make it effortless with @EnumeratedValue.
No converters. No magic numbers. Just clean, type-safe mapping that works.
Full tutorial →
buff.ly/VmlGHtW
#JavaDevelopers #Quarkus #HibernateORM #JPA
Someone told me my posts “sound like AI.”
So I built an AI detector in Java with Quarkus + LangChain4j.
It turns out detection is harder — and more fascinating — than you’d think.
Read the full breakdown ↓
buff.ly/Qm1KYIB
#Java #AI #Quarkus #LangChain4j
So I built an AI detector in Java with Quarkus + LangChain4j.
It turns out detection is harder — and more fascinating — than you’d think.
Read the full breakdown ↓
buff.ly/Qm1KYIB
#Java #AI #Quarkus #LangChain4j
November 22, 2025 at 7:15 AM
Someone told me my posts “sound like AI.”
So I built an AI detector in Java with Quarkus + LangChain4j.
It turns out detection is harder — and more fascinating — than you’d think.
Read the full breakdown ↓
buff.ly/Qm1KYIB
#Java #AI #Quarkus #LangChain4j
So I built an AI detector in Java with Quarkus + LangChain4j.
It turns out detection is harder — and more fascinating — than you’d think.
Read the full breakdown ↓
buff.ly/Qm1KYIB
#Java #AI #Quarkus #LangChain4j
JUnit 6 is here — and it’s a real upgrade for Quarkus developers.
Unified versioning. Java 17 baseline. Fail-fast tests that actually save time.
Full hands-on walkthrough →
buff.ly/hFpjFlI
#Java #Quarkus #JUnit6 #Testing
Unified versioning. Java 17 baseline. Fail-fast tests that actually save time.
Full hands-on walkthrough →
buff.ly/hFpjFlI
#Java #Quarkus #JUnit6 #Testing
November 21, 2025 at 7:15 AM
JUnit 6 is here — and it’s a real upgrade for Quarkus developers.
Unified versioning. Java 17 baseline. Fail-fast tests that actually save time.
Full hands-on walkthrough →
buff.ly/hFpjFlI
#Java #Quarkus #JUnit6 #Testing
Unified versioning. Java 17 baseline. Fail-fast tests that actually save time.
Full hands-on walkthrough →
buff.ly/hFpjFlI
#Java #Quarkus #JUnit6 #Testing
Quarkus GraphQL Quickstart + MinIO as Object Store S3. It's much more than just a Quickstart ;-)
buff.ly/44QGJR5
#GraphQL #Java #quarkus #S3
buff.ly/44QGJR5
#GraphQL #Java #quarkus #S3
November 20, 2025 at 11:02 AM
Quarkus GraphQL Quickstart + MinIO as Object Store S3. It's much more than just a Quickstart ;-)
buff.ly/44QGJR5
#GraphQL #Java #quarkus #S3
buff.ly/44QGJR5
#GraphQL #Java #quarkus #S3
Built a tiny, serverless Markdown gist app with Quarkus + S3.
No database. No accounts. Just Java.
Powered by LocalStack for local testing and ready for the cloud.
🧠 New on TheMainThread →
buff.ly/j1gVK0t
#Java #Quarkus #AWS #LocalStack
No database. No accounts. Just Java.
Powered by LocalStack for local testing and ready for the cloud.
🧠 New on TheMainThread →
buff.ly/j1gVK0t
#Java #Quarkus #AWS #LocalStack
November 20, 2025 at 7:15 AM
Built a tiny, serverless Markdown gist app with Quarkus + S3.
No database. No accounts. Just Java.
Powered by LocalStack for local testing and ready for the cloud.
🧠 New on TheMainThread →
buff.ly/j1gVK0t
#Java #Quarkus #AWS #LocalStack
No database. No accounts. Just Java.
Powered by LocalStack for local testing and ready for the cloud.
🧠 New on TheMainThread →
buff.ly/j1gVK0t
#Java #Quarkus #AWS #LocalStack
Not your usual hashing guide.
In this new Quarkus post, I turn digest functions into tools for colors, cache keys, and distributed systems.
Because creativity in code starts with the little things.
👉 buff.ly/t9ppkqP
#Java #Quarkus #ApacheCommons #Developer
In this new Quarkus post, I turn digest functions into tools for colors, cache keys, and distributed systems.
Because creativity in code starts with the little things.
👉 buff.ly/t9ppkqP
#Java #Quarkus #ApacheCommons #Developer
November 19, 2025 at 7:15 AM
Not your usual hashing guide.
In this new Quarkus post, I turn digest functions into tools for colors, cache keys, and distributed systems.
Because creativity in code starts with the little things.
👉 buff.ly/t9ppkqP
#Java #Quarkus #ApacheCommons #Developer
In this new Quarkus post, I turn digest functions into tools for colors, cache keys, and distributed systems.
Because creativity in code starts with the little things.
👉 buff.ly/t9ppkqP
#Java #Quarkus #ApacheCommons #Developer
My new book with Alex Soto Bueno and Natale Vinto just dropped:
Applied AI for Enterprise Java
The practical field guide for Java developers bringing AI to production.
Full story (and how it came to life between family, travel, and too much coffee):
buff.ly/2iDl9ba
#Java #AI #Quarkus #LangChain4j
Applied AI for Enterprise Java
The practical field guide for Java developers bringing AI to production.
Full story (and how it came to life between family, travel, and too much coffee):
buff.ly/2iDl9ba
#Java #AI #Quarkus #LangChain4j
November 18, 2025 at 7:15 AM
My new book with Alex Soto Bueno and Natale Vinto just dropped:
Applied AI for Enterprise Java
The practical field guide for Java developers bringing AI to production.
Full story (and how it came to life between family, travel, and too much coffee):
buff.ly/2iDl9ba
#Java #AI #Quarkus #LangChain4j
Applied AI for Enterprise Java
The practical field guide for Java developers bringing AI to production.
Full story (and how it came to life between family, travel, and too much coffee):
buff.ly/2iDl9ba
#Java #AI #Quarkus #LangChain4j
A week in Crete with barely any Wi-Fi made me miss the days when phones were our music players.
So I built one — a reactive MP3 player in Java using Quarkus + Mutiny, complete with metadata extraction.
Streaming reimagined, the Java way.
🎧 Read here:
buff.ly/C1MVsKa
So I built one — a reactive MP3 player in Java using Quarkus + Mutiny, complete with metadata extraction.
Streaming reimagined, the Java way.
🎧 Read here:
buff.ly/C1MVsKa
November 17, 2025 at 7:15 AM
A week in Crete with barely any Wi-Fi made me miss the days when phones were our music players.
So I built one — a reactive MP3 player in Java using Quarkus + Mutiny, complete with metadata extraction.
Streaming reimagined, the Java way.
🎧 Read here:
buff.ly/C1MVsKa
So I built one — a reactive MP3 player in Java using Quarkus + Mutiny, complete with metadata extraction.
Streaming reimagined, the Java way.
🎧 Read here:
buff.ly/C1MVsKa
AI image previews… but built with Java.
This hands-on guide shows how to stream images progressively from a Quarkus backend using Mutiny — so your browser renders them in real time.
Catch the full tutorial here:
buff.ly/wKrwoTc
#Java #Quarkus #Reactive #WebDev
This hands-on guide shows how to stream images progressively from a Quarkus backend using Mutiny — so your browser renders them in real time.
Catch the full tutorial here:
buff.ly/wKrwoTc
#Java #Quarkus #Reactive #WebDev
November 16, 2025 at 7:15 AM
AI image previews… but built with Java.
This hands-on guide shows how to stream images progressively from a Quarkus backend using Mutiny — so your browser renders them in real time.
Catch the full tutorial here:
buff.ly/wKrwoTc
#Java #Quarkus #Reactive #WebDev
This hands-on guide shows how to stream images progressively from a Quarkus backend using Mutiny — so your browser renders them in real time.
Catch the full tutorial here:
buff.ly/wKrwoTc
#Java #Quarkus #Reactive #WebDev
NullPointerExceptions are still the #1 reason Java apps crash in production.
Here’s a better way: catch them at compile time using JSpecify and NullAway in Quarkus.
Simple setup, zero runtime cost.
Read the full tutorial →
buff.ly/GtIsnAT
#Java #Quarkus #NullAway #DevTools
Here’s a better way: catch them at compile time using JSpecify and NullAway in Quarkus.
Simple setup, zero runtime cost.
Read the full tutorial →
buff.ly/GtIsnAT
#Java #Quarkus #NullAway #DevTools
November 15, 2025 at 7:15 AM
NullPointerExceptions are still the #1 reason Java apps crash in production.
Here’s a better way: catch them at compile time using JSpecify and NullAway in Quarkus.
Simple setup, zero runtime cost.
Read the full tutorial →
buff.ly/GtIsnAT
#Java #Quarkus #NullAway #DevTools
Here’s a better way: catch them at compile time using JSpecify and NullAway in Quarkus.
Simple setup, zero runtime cost.
Read the full tutorial →
buff.ly/GtIsnAT
#Java #Quarkus #NullAway #DevTools
Passwords you can say are passwords you can lose.
In this new Quarkus tutorial, I show how to rate passwords not just by entropy—but by pronounceability.
Java + Apache Commons Codec + phonetic analysis = smarter security.
buff.ly/WPSxUs0
#Java #Quarkus #Security
In this new Quarkus tutorial, I show how to rate passwords not just by entropy—but by pronounceability.
Java + Apache Commons Codec + phonetic analysis = smarter security.
buff.ly/WPSxUs0
#Java #Quarkus #Security
November 14, 2025 at 7:15 AM
Passwords you can say are passwords you can lose.
In this new Quarkus tutorial, I show how to rate passwords not just by entropy—but by pronounceability.
Java + Apache Commons Codec + phonetic analysis = smarter security.
buff.ly/WPSxUs0
#Java #Quarkus #Security
In this new Quarkus tutorial, I show how to rate passwords not just by entropy—but by pronounceability.
Java + Apache Commons Codec + phonetic analysis = smarter security.
buff.ly/WPSxUs0
#Java #Quarkus #Security
Thinking about moving from Spring Boot to Quarkus?
Here’s a no-fluff guide comparing Thymeleaf and Qute through an architect’s lens — build-time validation, native performance, and what really changes when you migrate.
buff.ly/fiJwSFK
#Java #Quarkus #SpringBoot #GraalVM #SoftwareArchitecture
Here’s a no-fluff guide comparing Thymeleaf and Qute through an architect’s lens — build-time validation, native performance, and what really changes when you migrate.
buff.ly/fiJwSFK
#Java #Quarkus #SpringBoot #GraalVM #SoftwareArchitecture
November 13, 2025 at 7:15 AM
Thinking about moving from Spring Boot to Quarkus?
Here’s a no-fluff guide comparing Thymeleaf and Qute through an architect’s lens — build-time validation, native performance, and what really changes when you migrate.
buff.ly/fiJwSFK
#Java #Quarkus #SpringBoot #GraalVM #SoftwareArchitecture
Here’s a no-fluff guide comparing Thymeleaf and Qute through an architect’s lens — build-time validation, native performance, and what really changes when you migrate.
buff.ly/fiJwSFK
#Java #Quarkus #SpringBoot #GraalVM #SoftwareArchitecture
Spring’s new BeanRegistrar sounds exciting — until you see how Quarkus already does it faster.
Dynamic beans, static speed ⚡
A hands-on tutorial comparing Spring’s runtime flexibility to Quarkus build-time precision.
Read it on The Main Thread:
buff.ly/EAZlGZM
Dynamic beans, static speed ⚡
A hands-on tutorial comparing Spring’s runtime flexibility to Quarkus build-time precision.
Read it on The Main Thread:
buff.ly/EAZlGZM
November 12, 2025 at 7:15 AM
Spring’s new BeanRegistrar sounds exciting — until you see how Quarkus already does it faster.
Dynamic beans, static speed ⚡
A hands-on tutorial comparing Spring’s runtime flexibility to Quarkus build-time precision.
Read it on The Main Thread:
buff.ly/EAZlGZM
Dynamic beans, static speed ⚡
A hands-on tutorial comparing Spring’s runtime flexibility to Quarkus build-time precision.
Read it on The Main Thread:
buff.ly/EAZlGZM
Flexible data without the chaos.
Learn how to model polymorphic JSON objects in Quarkus with Jakarta Data — a modern, type-safe, and standard approach for evolving enterprise systems.
Read: buff.ly/6xymr8h
#Java #Quarkus #JakartaEE #Hibernate #DataModeling
Learn how to model polymorphic JSON objects in Quarkus with Jakarta Data — a modern, type-safe, and standard approach for evolving enterprise systems.
Read: buff.ly/6xymr8h
#Java #Quarkus #JakartaEE #Hibernate #DataModeling
November 11, 2025 at 7:15 AM
Flexible data without the chaos.
Learn how to model polymorphic JSON objects in Quarkus with Jakarta Data — a modern, type-safe, and standard approach for evolving enterprise systems.
Read: buff.ly/6xymr8h
#Java #Quarkus #JakartaEE #Hibernate #DataModeling
Learn how to model polymorphic JSON objects in Quarkus with Jakarta Data — a modern, type-safe, and standard approach for evolving enterprise systems.
Read: buff.ly/6xymr8h
#Java #Quarkus #JakartaEE #Hibernate #DataModeling
Quarkus just made SQL imports undead-simple 🧟♂️
Load all your Hibernate scripts from one ZIP file — clean, organized, and fast.
Built a full “Zombie Survival Registry” to show how.
👉 buff.ly/KTuBmSr
#Java #Quarkus #Hibernate
Load all your Hibernate scripts from one ZIP file — clean, organized, and fast.
Built a full “Zombie Survival Registry” to show how.
👉 buff.ly/KTuBmSr
#Java #Quarkus #Hibernate
November 10, 2025 at 7:15 AM
Quarkus just made SQL imports undead-simple 🧟♂️
Load all your Hibernate scripts from one ZIP file — clean, organized, and fast.
Built a full “Zombie Survival Registry” to show how.
👉 buff.ly/KTuBmSr
#Java #Quarkus #Hibernate
Load all your Hibernate scripts from one ZIP file — clean, organized, and fast.
Built a full “Zombie Survival Registry” to show how.
👉 buff.ly/KTuBmSr
#Java #Quarkus #Hibernate
I'm beyond excited that our book finished production and is available now on O'Reilly and as ebook on Amazon. The printed books will be available within the next few weeks!
If you're looking for a Christmas gift, just saying 😉
www.oreilly.com/library/view...
@natalevinto.bsky.social
If you're looking for a Christmas gift, just saying 😉
www.oreilly.com/library/view...
@natalevinto.bsky.social
November 9, 2025 at 8:04 AM
I'm beyond excited that our book finished production and is available now on O'Reilly and as ebook on Amazon. The printed books will be available within the next few weeks!
If you're looking for a Christmas gift, just saying 😉
www.oreilly.com/library/view...
@natalevinto.bsky.social
If you're looking for a Christmas gift, just saying 😉
www.oreilly.com/library/view...
@natalevinto.bsky.social
Quarkus 3.26 quietly gave Qute a superpower.
With dynamic includes (_id), templates can now adapt at runtime. Perfect for dashboards, CMS pages, and feature-flagged UIs.
I wrote a full hands-on tutorial for Java developers: buff.ly/RFRTiL0
#Java #Quarkus #Qute #Developers
With dynamic includes (_id), templates can now adapt at runtime. Perfect for dashboards, CMS pages, and feature-flagged UIs.
I wrote a full hands-on tutorial for Java developers: buff.ly/RFRTiL0
#Java #Quarkus #Qute #Developers
November 8, 2025 at 7:15 AM
Quarkus 3.26 quietly gave Qute a superpower.
With dynamic includes (_id), templates can now adapt at runtime. Perfect for dashboards, CMS pages, and feature-flagged UIs.
I wrote a full hands-on tutorial for Java developers: buff.ly/RFRTiL0
#Java #Quarkus #Qute #Developers
With dynamic includes (_id), templates can now adapt at runtime. Perfect for dashboards, CMS pages, and feature-flagged UIs.
I wrote a full hands-on tutorial for Java developers: buff.ly/RFRTiL0
#Java #Quarkus #Qute #Developers
When ideas compile swiftly, the bottleneck is you. AI can rapidly scaffold a Quarkus app, yet imagination and clarity remain hurdles. I think about self-writing code, identifying thought deadlocks with LLMs, and the impact of mental health on modern software architecture. buff.ly/RE5TcPu #AI
November 7, 2025 at 7:15 AM
When ideas compile swiftly, the bottleneck is you. AI can rapidly scaffold a Quarkus app, yet imagination and clarity remain hurdles. I think about self-writing code, identifying thought deadlocks with LLMs, and the impact of mental health on modern software architecture. buff.ly/RE5TcPu #AI
Your Quarkus app knows more than you think.
Now it can tell you — thanks to new Java Flight Recorder integration.
Capture runtime metadata, analyze performance, and visualize everything with JDK Mission Control.
Full hands-on guide 👉 buff.ly/XR8WqfE
#Java #Quarkus #FlightRecorder #Observability
Now it can tell you — thanks to new Java Flight Recorder integration.
Capture runtime metadata, analyze performance, and visualize everything with JDK Mission Control.
Full hands-on guide 👉 buff.ly/XR8WqfE
#Java #Quarkus #FlightRecorder #Observability
November 6, 2025 at 7:15 AM
Your Quarkus app knows more than you think.
Now it can tell you — thanks to new Java Flight Recorder integration.
Capture runtime metadata, analyze performance, and visualize everything with JDK Mission Control.
Full hands-on guide 👉 buff.ly/XR8WqfE
#Java #Quarkus #FlightRecorder #Observability
Now it can tell you — thanks to new Java Flight Recorder integration.
Capture runtime metadata, analyze performance, and visualize everything with JDK Mission Control.
Full hands-on guide 👉 buff.ly/XR8WqfE
#Java #Quarkus #FlightRecorder #Observability
New post on The Main Thread:
Learn how to build and deploy a static site with Quarkus + Roq — and push it straight to GitHub Pages.
It’s all Java. It’s fast. And it auto-deploys.
Read the tutorial → buff.ly/XaDEoSh
#Java #Quarkus #GitHub #WebDev #OpenSource
Learn how to build and deploy a static site with Quarkus + Roq — and push it straight to GitHub Pages.
It’s all Java. It’s fast. And it auto-deploys.
Read the tutorial → buff.ly/XaDEoSh
#Java #Quarkus #GitHub #WebDev #OpenSource
November 5, 2025 at 7:15 AM
New post on The Main Thread:
Learn how to build and deploy a static site with Quarkus + Roq — and push it straight to GitHub Pages.
It’s all Java. It’s fast. And it auto-deploys.
Read the tutorial → buff.ly/XaDEoSh
#Java #Quarkus #GitHub #WebDev #OpenSource
Learn how to build and deploy a static site with Quarkus + Roq — and push it straight to GitHub Pages.
It’s all Java. It’s fast. And it auto-deploys.
Read the tutorial → buff.ly/XaDEoSh
#Java #Quarkus #GitHub #WebDev #OpenSource
AI makes us faster. But does it make us better?
After 250+ AI-assisted posts, I realized mastery isn’t about memorizing code—it’s about knowing when the machine is wrong.
A new essay on human craft, developer judgment, and “the claw”:
👉 buff.ly/Ipy7pFJ
#Java #AI #SoftwareCraft #WritingWithAI
After 250+ AI-assisted posts, I realized mastery isn’t about memorizing code—it’s about knowing when the machine is wrong.
A new essay on human craft, developer judgment, and “the claw”:
👉 buff.ly/Ipy7pFJ
#Java #AI #SoftwareCraft #WritingWithAI
November 4, 2025 at 7:15 AM
AI makes us faster. But does it make us better?
After 250+ AI-assisted posts, I realized mastery isn’t about memorizing code—it’s about knowing when the machine is wrong.
A new essay on human craft, developer judgment, and “the claw”:
👉 buff.ly/Ipy7pFJ
#Java #AI #SoftwareCraft #WritingWithAI
After 250+ AI-assisted posts, I realized mastery isn’t about memorizing code—it’s about knowing when the machine is wrong.
A new essay on human craft, developer judgment, and “the claw”:
👉 buff.ly/Ipy7pFJ
#Java #AI #SoftwareCraft #WritingWithAI
