Functional Domain Modeling with Gleam
summary
Shows how Gleam's type system and pure functions produce a precise domain model for DDD, using structs to represent data, union types for choices, and functions whose signatures encode allowed state transitions. Examples include a card game model and a cafe order flow where states like Placed → Paid → Preparing are explicit. Implementation keeps side effects at the edges, uses Result-style error types, and targets the BEAM for concurrency and production deployment.
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chapters (7)
- 0:00Introduction
- 1:10What is DDD
- 2:55Functional and Gleam for DDD
- 5:25Card game example
- 11:22Café order workflow
- 14:33Evolving the domain model
- 15:37References and closing
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