springboot-skills-marketplace

spring-data-jpa

Implement Spring Data JPA repositories, entities, and queries following modern best practices. Use for creating repositories (only for aggregate roots), writing queries (@Query, DTO projections), custom repositories (Criteria API, bulk ops), CQRS query services, entity relationships, and performance optimization. Covers patterns from simple repositories to advanced CQRS with detailed anti-patterns guidance.

creating-springboot-projects

Create Spring Boot projects with Java 25 and Spring Boot 4. Use when user wants to create, build, scaffold, setup, or initialize a new Spring Boot application, microservice, REST API, or backend service; asks for project structure recommendations; mentions Java 25 or Spring Boot 4 features (RestTestClient, HTTP Service Clients, API versioning, JSpecify null-safety, modularization); needs architecture guidance (layered, package-by-module, modular monolith, tomato, DDD+hexagonal); or requests Spring Initializr setup. Also triggers on discussions about Spring Boot architecture patterns, Value Objects, CQRS, or domain-driven design.

springboot-migration

Migrate Spring Boot projects to version 4.0 with Java 25, including Spring Modulith 2.0 and Testcontainers 2.x upgrades. Use when user requests upgrading Spring Boot, migrating to Java 25, updating dependencies to Spring Boot 4, mentions Jackson 3 migration, asks about starter renames (web→webmvc, aop→aspectj), fixing test annotations (@MockBean→@MockitoBean), or needs help with Spring Modulith 2.0 or Testcontainers 2.x compatibility. Analyzes codebase for migration issues and guides through changes with specific file references.

java25-springboot4-reviewer

Comprehensive code review for Java 25 and Spring Boot 4 apps. Use when reviewing, checking, auditing, or analyzing Java/Spring Boot code (files, modules, PRs, or full codebases) for migration risks, Spring Boot 4 best practices, JSpecify null-safety, security vulnerabilities, performance bottlenecks, data access pitfalls, architecture boundaries (DDD/Hexagonal/Spring Modulith), or modern Java 25 usage.