Querying Records Between Two Dates Using Hibernate

Querying records between two dates is a common requirement in enterprise applications. Examples include retrieving orders placed within a specific…

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Database Indexing Mistakes That Senior Java Developers Still Make in 2026: A Deep Dive With PostgreSQL and Hibernate

You’ve shipped dozens of services. You know what a B-tree is. Yet your PostgreSQL queries are still crawling at 3…

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The Database Migration Risk That Hibernate Silently Creates

Why hbm2ddl.auto=update is still in production codebases — and what to do about it Somewhere in a production codebase right now, Hibernate…

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Understanding @NamedEntityGraph in Hibernate

Hibernate provides several techniques to optimize entity fetching and reduce performance issues such as the N+1 query problem. One of…

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Building Read-Write Database Routing in Spring Boot with JPA

Enterprise applications often require the separation of database workloads to improve performance and scalability. Read operations can be directed to…

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The Hidden Cost of Records: When Java Records Break Your Serialization, JPA, and Reflection-Heavy Code

Records are now a mainstream Java feature — clean, concise, and genuinely useful. But the introductory tutorials skip the part…

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Using @ConcreteProxy in Hibernate

Hibernate is a powerful ORM framework, but its use of proxies for lazy loading can sometimes lead to subtle and…

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Joining Unrelated Tables with JPA Criteria API

In real-world enterprise applications, it is common to encounter database tables that do not have explicit JPA relationships (such as…

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How to Fix Hibernate’s token ‘*’ SyntaxException

Hibernate’s JPQL (Java Persistence Query Language) provides an object-oriented abstraction over SQL, allowing us to query entities instead of database…

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