SKILL · ENGINEERING
Migrate Plan
Pre-deploy audit of Postgres schema changes to catch locking and downtime risks.
Schema migrations are where teams ship outages by accident. Migrate Plan reads your migration before it runs, finds the ones that lock tables or block the app, and rewrites the ones it can.
When to reach for it
Every time you're about to deploy a migration to production. Especially if the table has any meaningful row count.
How an owner uses it
Paste the migration. Get a verdict: safe, risky, or unsafe. Each risky line gets a specific suggestion for the safer rewrite (e.g., backfill in batches, add the index concurrently).