Learning REST and DDD from Jim Webber.

Notes on “Domain-Driven Design for RESTful Systems”

• HTTP is about moving documents around,  therefore Map HTTP protocol to trigger business activities by moving documents.
• HTTP is an application protocol. Narrow HTTP into a domain application protocol.
• Restful Clients drives work-flows just like amazon make us a drive the checkout-flow.
• Do not build services that also do orchestration. Operation-Oriented VS Resource-Oriented architectures.
• You do not need a bus (event bus) for Events. Use Event feeds ( atoms feeds) and let clients pull the events they are interested in.

On DDD

• There’s always More THAN ONE DOMAIN REPRESENTATION in the software solution.
• Command Query Responsibility Separation (CQRS) maps directly to HTTP