The bulk of the "High-Performance Java Persistence" knowledge base is dedicated to fetching data. There are two main strategies, and misusing them is the leading cause of performance issues:
Persistence is not just about writing queries; it is about avoiding them. high-performance java persistence pdf
hibernate.jdbc.batch_size=50 hibernate.order_inserts=true hibernate.order_updates=true minimizing data retrieval
Improve the performance of Java applications by leveraging optimized database queries and advanced caching mechanisms. This feature focuses on reducing database query latency, minimizing data retrieval, and enhancing overall system throughput. high-performance java persistence pdf
One of the most critical "best practices" is to never use FetchType.EAGER . It often leads to the N+1 query problem, where a single entity load triggers dozens of additional database queries.