Advanced and Dynamic Searching With Spring Data JPA

From the classic Specification API to the new PredicateSpecification in Spring Data 4.0, generic search criteria builders, Querydsl integration, and pagination — everything your…

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Understanding Spring Data AOT Repositories

Spring Boot 3 introduced several enhancements for cloud-native and native-image applications. One of the most important optimizations is AOT (Ahead-of-Time)…

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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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Resolving the “Validation Failed for Query for Method” Error in Spring Data JPA

This article explains how to diagnose and resolve the error “Validation failed for query for method” in Spring Data JPA.…

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Query JPA LocalDateTime Using LocalDate Example

Working with Java’s date and time API can be tricky, especially when your database column uses LocalDateTime but the query…

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Spring Data JPA Switch to AWS RDS Proxy Example

1. Introduction AWS RDS Proxy is a fully managed, highly available database proxy for Amazon Relational Database Service(RDS). It sits…

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Reactive Spring Data with R2DBC vs Blocking JPA: Throughput, Latency, and Developer Experience

Spring has long been the de facto framework for building Java web applications. But as applications grow in complexity and…

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Working with Sequences in H2 Database

When developing Java applications with databases, auto-generating primary keys is a common requirement. Sequences are a reliable way to generate…

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Hibernate Fix DuplicateMappingException

1. Introduction To fix DuplicateMappingException requires that a column only maps to a single field. The org.hibernate.DuplicateMappingException is a runtime…

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