database elixir mysql phoenix postgresql reading-list sql sqlite

As an Elixir developer who cares about system up-time and avoiding “scheduled maintenance” windows, and more importantly avoiding “unscheduled maintenance” windows 😉, this guide dives deep into Ecto database migrations and how they can be used safely in production systems.

This is guide comes in a 4 part series of posts. The guide helps you:

  1. Understand Ecto migrations
  2. Migrate and rollback the database using Mix releases
  3. Avoid pitfalls during migrations

This guide includes a set of recipes for common migration scenarios. You can jump ahead to those, but it is helpful to understand what’s going on at a deeper level and to get your project setup ahead of time for running migrations in a production environment and

Note: This guide uses PostgreSQL and may differ if you’re using a different database. I’ll note where differences may be, but I do not go into depth on different database systems. This was also written using Ecto 3.6.x.

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