ecto-thinking

To design Ecto contexts and schemas for a new table in Elixir, map domain concepts to bounded contexts, define schema associations, and plan Repo interactions to structure data access boundaries across your application.

To avoid N+1 queries with Ecto preloads, plan has_many and belongs_to relationships carefully and implement strategic preload strategies using Ecto.Query composition for scalable data access patterns in BEAM-based systems.

Ecto.Multi handles transactions by grouping multiple database operations into a single atomic transaction, enforcing invariants through changeset validations and ensuring all operations succeed or roll back together.

You should separate data access into bounded contexts in an Elixir application when domain concepts map to distinct schemas and migrations, requiring clear boundaries to structure Repo interactions and isolate responsibilities.

Yes, you can compose complex queries with Ecto.Query to optimize data access patterns by combining query fragments, planning preload strategies, and structuring scalable data retrieval for BEAM-based systems.