The PDF doesn't just warn about N+1 queries (1 query for the parent, N for the children); it shows you how to fix it using and stats interceptors .
Entity mapping and memory
The latest editions of the High-performance Java Persistence.pdf cover: High-performance Java Persistence.pdf
She renamed the PDF to and moved it to her desktop. She would read the rest tomorrow. For now, she closed her laptop and smiled. The database was no longer the enemy. It was finally an ally. Mastering Data Access: A Deep Dive into "High-performance