Introduced in JPA 2.1, Entity Graphs allow developers to define dynamic fetching profiles at runtime, keeping entities lean for basic operations while fetching deep graphs for complex use cases.
You aren't just buying a PDF; you are buying the productivity of not having to rediscover database performance pitfalls on your own.
Object-Relational Mapping (ORM) tools simplify development but often introduce hidden performance bottlenecks if left unmonitored. High-Performance Java Persistence - Vlad Mihalcea
Configuring HikariCP for optimal performance. vlad mihalcea high-performance java persistence pdf
The notorious N+1 query problem occurs when an application fetches a list of parent entities and subsequently fires an individual query for every single child entity associated with those parents.
This book is ideal for:
The is the original, professionally typeset version of the book (often obtained via Vlad’s website or Gumroad). It is distinct from the older, free “draft” versions previously available online. This edition is meticulously updated, fully hyperlinked, and optimized for reading on desktops, tablets, and e-readers. Introduced in JPA 2
Data integrity is just as important as speed. The final section focuses on handling concurrent data modifications safely.
The core of the book demystifies Hibernate's inner workings. Mihalcea explains how to leverage the framework's state-management capabilities without falling into common traps:
This article serves as a comprehensive guide to Vlad Mihalcea’s seminal work, exploring why the PDF format remains a favorite for developers, what critical concepts the book covers, and how owning this resource can transform your engineering career. It is distinct from the older, free “draft”
What specific (high CPU, slow queries, connection timeouts) are you trying to solve?
If you are not ready to purchase the full book, Mihalcea’s blog contains hundreds of free, deeply technical articles covering almost every topic found in the book.
A common concern is obsolescence. Hibernate 6 introduced significant changes to SQL generation (improved JOINs, window functions, and CTE support). However, the in the PDF have aged exceptionally well.
By default, Hibernate sends updates one by one. The text explains how to properly configure automated JDBC batching to reduce network round trips from