Mongo migrate PoC

This repo contains a proof of concept for creating data migration scripts for MongoDB.

Scripts

yarn migrate:create <name> creates a migration in the migrations folder. yarn migrate Applies all migrations. yarn migrate:status Shows the status of the migrations.

Structure

migrate-mongo-config.js - Configuration for the migrations.

src/migrations - Folder for the migrations.

Recommendations for writing migrations

1. Never make braking changes to the database. -> Don't remove or rename fields / collections.
2. Make sure migrations can be run multiple times.
3. Don't make down migration scripts. Instead, make a new migration that undoes the previous migration.

General

• A migration is considered applied if the migration script returned without errors.
• In the migrations folder there is a file called sample-migration.ts. This is a template for new migrations.