Query tuning
Use JOIN FETCH in your JPQL queries to fetch the associated collections in a single query. High-performance Java Persistence.pdf
It was 11:47 PM, and the deployment was failing. Query tuning Use JOIN FETCH in your JPQL
The book is structured into sections that take the reader from foundational database knowledge to advanced framework tuning. High-Performance Java Persistence: Mihalcea, Vlad High-performance Java Persistence.pdf