In the era of AI, what should developers study and which technologies should they choose? We asked directly about the journey to becoming a Java Champion, learning and expertise in the AI era, and why ORM is still necessary even when AI can write SQL for you.

This course covers the next level of JPA performance optimization beyond Fetch Join and batch_fetch_size. From JPA to Hibernate, JDBC, and the DB engine—you will understand the underlying operational principles and learn seven strategies that can create an 18x performance difference with a single line of configuration. Moving beyond Read optimization, you will tune the entire Spring Persistence layer, including Write performance, relationship pitfalls, and production testing environments. Vlad Mihalcea, a Java Champion and core Hibernate contributor, teaches based on his experience and the tools he personally created to overcome the limitations of Spring Data JPA.

Make the most of relational database systems!

Is your Java persistence application a well-built, high-performance enterprise application, or slow code that just barely runs? The difference between the two is just a fine line. Let's study JPA and Hibernate properly and build high-performance applications!