One year as a Developer Advocate

Imagine having a tool that can automatically detect JPA and Hibernate performance issues. Wouldn’t that be just awesome?

Well, Hypersistence Optimizer is that tool! And it works with Spring Boot, Spring Framework, Jakarta EE, Java EE, Quarkus, or Play Framework.

So, enjoy spending your time on the things you love rather than fixing performance issues in your production system on a Saturday night!


Exactly one year ago today, I started working as a Developer Advocate for the Hibernate team at Red Hat. Prior to joining Red Hat, I used to work as a software architect, and I didn’t have any clue what I would have to do as a Developer Advocate. So, I learned on the way.

This post is a summary of what this role is about, and what I’ve managed to accomplish.

What is a Developer Advocate?

First of all, a Developer Advocate is a software engineer who not only enjoys coding with the framework they are advocating, but he or she enjoys talking or writing about it. Social interaction is fundamental to being a Developer Advocate.

Just like any other job, you need to have a goal. In my case, the goal was to mind the gap between the Hibernate developers and the community. Each Developer Advocate job has its own unique goal for each project or framework has different needs.

Revamping documentation

For an open-source project, documentation is of paramount importance, as illustrated by the following survey:

The Hibernate ORM project documentation was outdated and people were complaining about it.

Therefore, my number one priority was to rewrite it from scratch. Nowadays, the Hibernate ORM documentation looks like this. I’ve restructured both the UI and the User Guide content. Even if I worked for months on this massive task, there are still many improvements to come, so stay tuned!

Ressurecting the forum

When I joined the Hibernate team, the Hibernate ORM forum channel had not been active for a long time. There were spam messages, and many Hibernate ORM questions did not have any reply at all. Although we have many communication channels: mailing list, IRC, HipChat, StackOverflow, Quora, the forum is where most people go to address a question to the Hibernate team.

For instance, the PgJDBC team has reached us for a change that could potentially break Hibernate (and many other frameworks that build on top of JDBC) on our forum.

Going to conferences

I’ve talked about High-Performance JDBC and High-Performance Hibernate at Voxxed Bucharest, Devoxx France, Java Zone, and IT Days. Check out these presentations for more details.

Hibernate has a great market share, so my goal is to teach people how to use it properly. That’s why I wrote the High-Performance Java Persistence book.

Measuring impact

There are some metrics you can follow to know if you are doing any impact, like Alexa rating for


As you can see, we’ve got a significant improvement that kept ongoing for months now.

The GitHub stars graph shows a 50% increase from last year:


This is how the Hibernate Twitter stats page from November 2015:


And this is how it looks like now:


Overall, we got a 33% followers increase from around 4500 to almost 6000 followers today.

Thanks for following us!

I'm running an online workshop on the 11th of October about High-Performance SQL.

If you enjoyed this article, I bet you are going to love my Book and Video Courses as well.


All in all, this year of working as a Developer Advocate was a great journey, and I’m looking forward to the next year to come. Stay tuned for more great content about your favorite Java data access framework and JPA provider.

Transactions and Concurrency Control eBook

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