# 313 Frameworks Spring DB Migrations Flyway

> Use when you need to add or review Flyway database migrations in a Spring Boot application — Maven dependencies, db/migration scripts, spring.flyway.* configuration, baseline and validation, and alignment with JDBC or Spring Data JDBC. This should trigger for requests such as Add or review Flyway migrations in a Spring Boot project; Configure spring.flyway or db/migration layout. Part of cursor-rules-java project

- Skill: `majiayu000/313-frameworks-spring-db-migrations-flyway` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds add majiayu000/313-frameworks-spring-db-migrations-flyway`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/313-frameworks-spring-db-migrations-flyway/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: Apache-2.0
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/313-frameworks-spring-db-migrations-flyway

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# Spring — Database migrations (Flyway)

Apply Flyway migration guidelines for Spring Boot.

**What is covered in this Skill?**

- flyway-core and database-specific Flyway modules (e.g. PostgreSQL) with Spring Boot BOM
- Versioned SQL under `src/main/resources/db/migration` (`V{version}__{description}.sql`)
- `spring.flyway.*` properties: locations, baseline-on-migrate, validate-on-migrate
- Optional Java migrations (`BaseJavaMigration`) for data backfills
- Forward-only discipline: do not rewrite applied migrations in shared environments
- Coordination with `@311-frameworks-spring-jdbc` and `@312-frameworks-spring-data-jdbc`

**Scope:** Apply recommendations based on the reference rules and good/bad examples.

## Constraints

Before applying Flyway or SQL changes, ensure the project compiles. After improvements, run full verification.

- **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 user goal is ambiguous, stop and ask a clarifying question before editing files or running project-wide commands
- **EDGE CASE**: If required context, files, credentials, or tools are missing, report the blocker explicitly and ask whether to proceed with setup or fallback guidance
- **EDGE CASE**: If requested changes conflict with project constraints or safety boundaries, explain the conflict and ask for user confirmation on the preferred trade-off

## When to use this skill

- Add or review Flyway migrations in a Spring Boot project
- Configure spring.flyway or db/migration layout

## Workflow

1. **Read reference and assess project context**

Read `references/313-frameworks-spring-db-migrations-flyway.md` and inspect the current project setup before proposing changes.

2. **Gather scope and decide target improvements**

Identify requested outcomes, constraints, and the minimum safe set of changes to apply.

3. **Apply framework-aligned changes**

Implement or refactor configuration/code following the reference patterns and project conventions.

4. **Run verification and report results**

Execute appropriate build/tests and summarize what changed, what was verified, and any follow-up actions.

## Reference

For detailed guidance, examples, and constraints, see [references/313-frameworks-spring-db-migrations-flyway.md](references/313-frameworks-spring-db-migrations-flyway.md).