High-performance Java Persistence.pdf - _best_

Ensure your connection pool and JDBC driver have cachePrepStmts=true enabled. This reuses execution plans for identical queries with different parameters. 3. Hibernate Mapping Best Practices

Never use FetchType.EAGER for @ManyToOne or @OneToMany relationships. Eager fetching forces the framework to load data you might not need. High-performance Java Persistence.pdf

Traditional O'Reilly or Manning books are excellent, but the ecosystem is unique because it lives in a constant state of flux. Databases like PostgreSQL, MySQL, and Oracle update their execution plans. Hibernate 6 changed how it handles joins and casting. The PDF format allows Vlad to push updates that align with the latest JPA versions, making it a living document rather than a static tome. Ensure your connection pool and JDBC driver have

hibernate.order_inserts / hibernate.order_updates : Tells Hibernate to sort statements by entity type before batching. Without ordering, a sequence of alternating inserts (e.g., Post, Comment, Post, Comment) breaks the JDBC batch execution. The Problem with Identity Generation Hibernate Mapping Best Practices Never use FetchType

This happens when you fetch a list of entities and then issue a separate SQL query for each entity to load its child associations.