Spring Boot Persistence Best Practices: Optimize Java Persistence Performance in Spring Boot Applications
by Anghel Leonard
is handy because I can wonder into the ebook and quickly get concrete techniques that are very helpful.
For example the ManyToMany example was easy to get working and explained well in the book. Since I used that Leonard's repository for the book has been updated -- it's great that it's being updated. https://github.com/AnghelLeonard/Hibernate-SpringBoot