Database Migrations
Safe, reversible database migration patterns: forward-only production changes, expand-contract zero-downtime renames, concurrent indexes, batched backfills, per-tool workflows.
- What
- Safe, reversible database migration patterns: forward-only production changes, expand-contract zero-downtime renames, concurrent indexes, batched backfills, per-tool workflows.
- Cost
- Free
- Needs
- Use "Database Migrations" with your Muse.
- Install
- Copy the installer prompt below into your Muse — your agent does the rest.
Curated by Skill Harbor: a database migration skill that treats every schema change like it runs against production, because one day it will. The core principles are strict and practical: every change is a migration (never hand-edit production); production migrations are forward-only, with rollbacks done as new forward migrations; schema and data migrations stay separate, never mixed; and migrations are tested against production-sized data, since a migration that works on 100 rows can lock a table at 10M. It gives concrete PostgreSQL patterns (nullable columns, Postgres 11+ instant defaults, CREATE INDEX CONCURRENTLY, zero-downtime column renames via expand-contract), a pre-apply safety checklist (UP and DOWN present, no full table locks, rollback plan documented), and per-tool workflows for PostgreSQL, Prisma, Drizzle, Kysely, Django, and golang-migrate. By @affaan-m, listed here with credit to its creator. From the affaan-m/ECC repository (MIT). Honest caveats: pure guidance, nothing to install; patterns are starting points, not substitutes for testing against your own data volume; never run a migration on production without a tested rollback plan. Skill Harbor never reviews the code, review it yourself before use.
Version:
Install
Copy the install package below, then paste it into MuseThe install prompt below already includes the vetting steps: your agent follows the community checklist before installing anything with executable code. Want more?
Use "Database Migrations" with your Muse. Prerequisites: a project using PostgreSQL, Prisma, Drizzle, Kysely, Django, or golang-migrate. Pure guidance skill, nothing to install. 1. Open the skill: https://github.com/affaan-m/ECC/blob/main/skills/database-migrations/SKILL.md and copy the full SKILL.md text. 2. Paste it into a chat with Muse and add: "Plan this schema change as a safe migration: [describe the change, table sizes, downtime budget]." 3. Ask for the safety checklist against your migration before applying anything: "Run the pre-apply checklist on this migration." Tip: always ask for the rollback plan in the same breath as the migration itself. Safety: a skill is plain-text instructions; it runs nothing by itself. Review every generated migration against your data volume, and never apply to production without a tested rollback path.
Saved to your recent installs. Find it anytime on /connect.
Questions
How do I install a build?
Every product page includes a copy-paste install prompt. Paste it into your Muse and it sets the build up for you — no manual configuration.
Where does my money go?
Straight to the seller. Skill Harbor never processes payments: checkout happens on the seller’s own page, usually Stripe.
What does the ✓ next to a creator’s name mean?
It means we confirmed the identity of the person behind the listing. It says nothing about the code itself — always check a build before installing it.