Implementing DDD with the Spring Ecosystem
summary
Three small Spring Boot apps (credit sales funnel, scoring engine, credit agency) run a working DDD example that wires Spring Boot Spring Data Spring Cloud Stream with RabbitMQ and HTTP Atom feeds and uses Spring application events for JVM-local decoupling. The scoring domain uses four aggregates implemented as Spring‑free plain Java with package visibility and builder patterns; repositories wrap Spring Data JPA and persist projections. ArcUnit enforces aggregate packaging rules. Events carry the full credit application payload and the feed poller runs every 30s; the demo project is on GitHub.
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chapters (9)
- 0:00Introduction to DDD
- 2:57Bounded Contexts
- 9:02Entities and Value Objects
- 12:57Aggregates and Rules
- 17:36Case Study Example
- 22:02Encapsulating Aggregates
- 30:30Application Services
- 35:25Event-Driven Communication
- 44:29Internal Events and Summary
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