"High-Performance Java Persistence" by Vlad Mihalcea, updated through 2024, is a definitive resource for optimizing JDBC, JPA, and Hibernate performance. The book provides actionable, expert advice on database transactions and advanced querying techniques for developers looking to resolve performance bottlenecks. Purchase the e-book at High-Performance Java Persistence - Vlad Mihalcea
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high-performance-java-persistence/README.md at master - GitHub Use parameterized queries to avoid SQL injection
Security, reliability, maintainability trade-offs (≈300 words) High performance must not compromise security. Use parameterized queries to avoid SQL injection. Ensure encryption in transit, least-privilege DB users, and auditing. Balance optimizations with maintainability—overly clever SQL or denormalization increases long-term cost. Chapter 3: Decoding the "PDF 20" Search –
CREATE TABLE posts_2024 PARTITION OF posts FOR VALUES FROM ('2024-01-01') TO ('2025-01-01');
Generating one PDF of 20 MB was fine. But 20 concurrent users → 400 MB heap, plus Hibernate session, plus result sets → GC overhead.