Example for DDD/CQRS+ES

Objective

This project's objective is to show Example DDD with CQRS+Event Sourcing.

Using libraries

• akka-actor
• akka-stream
• akka-persistence
• akka-persistence-query
• akka-http

Designs

The main layers/components in the application

1. API Layer
   • Main object is what for bootstrap.
   • TodoWriteService trait is the controller component for write side.
   • TodoReadService trait is the controller component for read side.
   • There are models in the json package.
2. Domain Layer(for the Write Side)
   • Todo class is a state in the TodoAggregate.
   • TodoAggregate class is implemented by the Actor. It's DDD's Aggregate Root.
   • TodoSupervisor class is the supervisor for TodoAggregate.
   • TodoShardFactory class is the factory of cluster-sharding.
3. Database Access Layer(for the Read Side)
   • TodoDao is the Data Access Object.
   • TodoDas is that wraps TodoDao.

License

MIT License Copyright (c) 2016 Junichi Kato