👀 Views: 97 💬 Answers: 1 📅 Created: 2025-06-05

java spring-boot hibernate jpa performance Java

I'm updating my dependencies and Can someone help me understand I've been researching this but I've been struggling with this for a few days now and could really use some help..... I've been researching this but I'm testing a new approach and I'm a bit lost with I'm encountering significant performance issues in my Spring Boot application, which is using JPA with Hibernate for batch processing. The application processes large datasets, and I'm noticing that the time taken for saving entities has increased drastically. Initially, batch size was set to 50, but even with a size of 10, the performance doesn't improve. I've tried the following optimizations: - Used `@Transactional` for batch updates. - Switched to using the `EntityManager`'s `flush()` and `clear()` methods after processing each batch to manage the persistence context. - Increased the database connection pool size in the `application.properties` file. Here's a snippet of the code that processes the batch: ```java @Service public class BatchProcessingService { @PersistenceContext private EntityManager entityManager; @Transactional public void processBatch(List<MyEntity> entities) { for (int i = 0; i < entities.size(); i++) { entityManager.persist(entities.get(i)); if (i % 10 == 0) { // Flush and clear every 10 inserts entityManager.flush(); entityManager.clear(); } } entityManager.flush(); entityManager.clear(); } } ``` Despite these changes, the application performance seems to degrade as data volume increases, and profiling the application shows that most time is spent in the `persist()` method. I'm using PostgreSQL 13 and Hibernate 5.6.0. Could there be any other configurations or best practices that I'm missing? Any insights on how I can improve the performance of my batch processing would be greatly appreciated. Thanks for taking the time to read this! I'm working with Java in a Docker container on Windows 10. Thanks, I really appreciate it! I'm developing on Ubuntu 20.04 with Java. Any help would be greatly appreciated! Could someone point me to the right documentation? What's the best practice here? Thanks in advance!