Denis Magda

Denis started his professional career at Sun Microsystems and Oracle, where he built JVM/JDK and led one of the Java development groups.

After learning Java from the inside, he joined the world of distributed systems and databases, where he has remained ever since.

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What do you know about the code changes that were just introduced into the codebase? When will you notice if something goes wrong?

Jakarta EE 11: Beyond the Era of Java EE

This user guide provides a brief history of Java EE/Jakarta EE and a detailed overview of some of the specifications that will be updated in Jakarta EE 11.

Stable, Secure, and Affordable Java

Azul Platform Core is the #1 Oracle Java alternative, offering OpenJDK support for more versions (including Java 6 & 7) and more configurations for the greatest business value and lowest TCO.

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Creating Scalable OpenAI GPT Applications in Java

Learn how to integrate the ChatGPT engine into your Java applications in a scalable way by sending prompts to the engine only when necessary.

Apr 27 40,2K

Denis Magda

Databases

Java Core Machine Learning Tutorials

How to Best Use Java Records as DTOs in Spring Boot 3

Explore how to best use compact Java Records as Data Transfer Objects (DTOs) for database and API calls in Spring Boot 3 with Hibernate 6 as the persistence provider.

Mar 09 16,1K

Denis Magda

Databases

Tutorials Records Java Core

How Java Litters Beyond the Heap: Part 3, Solid-State Drives

Explore how solid-state drives (SSDs), the default storage medium for on-disk data, use garbage collection.

Jan 27 4,1K

Denis Magda

Databases

Tutorials

How Java Litters Beyond the Heap: Part 2, Distributed Databases

Let’s create a simple Java application with YugabyteDB distributed database to see if garbage is generated in response to application requests.

Dec 20 6,4K

Denis Magda

Databases

Tutorials

How Java Litters Beyond the Heap: Part 1, Relational Databases

Let’s create a simple Java application and see how the application generates garbage at the relational database level.

Nov 29 11,1K

Denis Magda

Databases

Tutorials

Retweet on Twitter Foojay.io Retweeted

If you want to know what I spoke about in @jcon_conference in Germany, here's an interview I did at the @foojayio podcast:

#Java #JCON #JakartaEE #AI #A2A

02:06 PM · May 04, 2026

Retweet on Twitter Foojay.io Retweeted

Our team loves to meet and talk with the Java community from around the world. If you want to learn more. You can find all OmniFish presentations at: https://speakerdeck.com/omnifish, including links to the source code of related demos. Or get in touch for a free consultation call.

10:13 AM · April 30, 2026

Retweet on Twitter Foojay.io Retweeted

Another happy customer :)
"Their expertise and flexible hands-on troubleshooting support accelerated resolution of several unexpected hurdles and ultimately got us to a successful upgrade outcome."

If you would like to discuss how we could help your company, get in touch.

09:55 AM · April 21, 2026