| name | 316-frameworks-spring-mongodb-migrations-mongock |
| description | Use when you need to add or review Mongock MongoDB data migrations in a Spring Boot application — including Maven coordinates, Spring Data MongoDB drivers, migration scan packages, @ChangeUnit classes, lock/transaction settings, and Testcontainers verification. This should trigger for requests such as Add Mongock migrations in Spring Boot; Review Spring MongoDB data migrations; Configure Mongock change units for Spring Data MongoDB. Part of cursor-rules-java project |
| license | Apache-2.0 |
| metadata | {"author":"Juan Antonio Breña Moral","version":"0.16.0"} |
Spring - MongoDB migrations (Mongock)
Apply Mongock migration guidelines for Spring Boot and Spring Data MongoDB.
What is covered in this Skill?
- Mongock BOM, Spring Boot runner, and Spring Data MongoDB driver coordinates
mongock.migration-scan-package configuration and startup execution- Code-first
@ChangeUnit migrations with @Execution and rollback hooks
- Locking, idempotency, transaction limits, and forward-only rollout discipline
- Integration tests with Testcontainers MongoDB
- Coordination with
@315-frameworks-spring-mongodb
Scope: Apply recommendations based on the reference rules and good/bad examples.
Constraints
Compile before Mongock or MongoDB migration changes; verify after changes.
- MANDATORY: Run
./mvnw compile or mvn compile before applying any change
- SAFETY: If compilation fails, stop immediately
- VERIFY: Run
./mvnw clean verify or mvn clean verify after applying improvements
- BEFORE APPLYING: Read the reference for detailed rules and good/bad patterns
- EDGE CASE: If the project Spring Data MongoDB version is not compatible with the selected Mongock driver, stop and ask whether to pin/upgrade Mongock or use a lower driver generation
When to use this skill
- Add Mongock migrations in Spring Boot
- Review Spring MongoDB data migrations
- Configure Mongock change units for Spring Data MongoDB
Workflow
- Read reference and inspect MongoDB setup
Read references/316-frameworks-spring-mongodb-migrations-mongock.md and inspect pom.xml, Spring Boot version, MongoDB configuration, and existing @315-frameworks-spring-mongodb persistence patterns.
- Choose runner, driver, and execution policy
Select Mongock coordinates compatible with the active Spring Data MongoDB generation, configure migration scan packages, and decide startup vs controlled-job execution.
- Apply framework-aligned migrations
Implement/refactor @ChangeUnit classes with idempotent operations, explicit ordering, rollback hooks, and safe lock/transaction settings.
- Run verification and report results
Execute build/tests, including Testcontainers-backed MongoDB migration checks where feasible, and summarize outcomes and follow-up risks.
Reference
For detailed guidance, examples, and constraints, see references/316-frameworks-spring-mongodb-migrations-mongock.md.
