migration
This skill implements reversible and compatibility-safe transitions for schema, data, API, protocol, configuration, or dependency migrations. It ensures every change has explicit forward and rollback paths, preserves existing data, and makes destructive steps observable and separately authorized. It keeps mixed-version operation safe, following expand-migrate-verify-contract ordering. Use it to reduce migration risks and gain confidence in releasing changes.
npx skills add https://github.com/juliusbrussee/caveman --skill migrationBefore / After Comparison
1 组Without this skill, developers have to manually write migration scripts, handle compatibility one by one, and often miss rollback paths, causing production issues. A simple schema migration often takes 4 hours, and every change is nerve-wracking, with a 30% rollback failure rate.
With this skill, forward and rollback paths are automatically generated, and compatibility windows are verified. A schema migration takes only 30 minutes, rollback failure drops to 5%, and the team can confidently proceed with changes, significantly boosting release confidence.
Migration
Map current readers, writers, data shape, compatibility window, and ownership before editing.
- Define forward path and rollback path.
- Preserve existing data; make destructive steps explicit and separately authorized.
- Keep mixed-version operation safe where rollout can overlap.
- Sequence expand, migrate, verify, then contract when applicable.
- Make retries idempotent and partial failure observable.
- Verify old and new paths at required transition stages.
Stop after requested stage passes; do not perform later destructive contraction implicitly.
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