Reducing the number of database interactions can significantly improve performance. Consider:
List dtos = entityManager.createQuery( "select new com.example.dto.PostSummaryDTO(p.id, p.title, count(c.id)) " + "from Post p left join p.comments c group by p.id, p.title", PostSummaryDTO.class) .getResultList(); Use code with caution. 6. Concurrency Control and Locking High-performance Java Persistence.pdf
How you map Java objects to relational database tables directly dictates the types of SQL queries Hibernate generates. Identifier Generators Concurrency Control and Locking How you map Java
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. If you share with third parties, their policies apply
Understand how your database handles concurrency. Misconfigured transaction isolation levels lead to deadlocks, blocking, and poor scalability. 2. JDBC Layer Optimization
Only fetch the columns and rows your application immediately requires.