Spring Data JPA Articles
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How to Implement Optimistic Locking (@Version) with JPA in Spring Boot to Prevent Concurrent Update Conflicts
Learn how to prevent 'Lost Update' issues that occur in e-commerce inventory updates and reservation systems using the @Version annotation. Covers OptimisticLockException handling, retry strategies with Spring Retry, and writing concurrency tests with practical code examples.
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How to Implement Dynamic Queries with Spring Data JPA Specifications - Handling Search Form Filtering with JpaSpecificationExecutor
An implementation guide for Spring Data JPA Specifications that eliminates if-statement hell in search forms. Covers setting up JpaSpecificationExecutor, safely skipping null conditions, combining multiple conditions with AND/OR, integrating with pagination, and choosing between Specifications and QueryDSL, all explained with practical code examples.
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How to Solve the N+1 Problem in Spring Data JPA - When to Use @EntityGraph vs JOIN FETCH
A practical guide covering how to detect the N+1 problem in Spring Data JPA and how to resolve it using @EntityGraph and JOIN FETCH with real examples. Covers Lazy/Eager Loading configuration and batch fetch optimization techniques useful in production environments.
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How to Automatically Record Created and Updated Timestamps with JPA Auditing in Spring Boot
A guide to automatically recording entity creation and update timestamps using JPA Auditing in Spring Boot. Covers practical code for configuring @CreatedDate, @LastModifiedDate, @EnableJpaAuditing, and AuditorAware, including integration with Spring Security.
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Have You Ever Been Unsure How to Write Spring Data JPA Query Methods?
A reference table summarizing the naming conventions of Spring Data JPA query methods (findBy/existsBy/countBy/deleteBy). Check keywords like Containing/StartingWith/GreaterThan/Between/In/IsNull along with their generated SQL and usage examples in a quick-reference table. Also explains custom queries with @Query, sorting, and paging with practical examples.