j5ik2o / cqrs-es-example-java

An example of CQRS/Event Sourcing and GraphQL implemented in Java.

cqrs-es-example-java

Overview

Status: In Implementation

This is an example of CQRS/Event Sourcing and GraphQL implemented in Java.

This project uses j5ik2o/event-store-adapter-java for Event Sourcing.

Please refer to here for implementation examples in other languages.

日本語

Feature

• Write API Server(GraphQL)
• Read API Server(GraphQL)
• Read Model Updater on Local
• Docker Compose Support
• Read Model Updater on AWS Lambda
• Deployment to AWS

Overview

Component Composition

• Write API Server
  • API is implemented by GraphQL (Mutation)
  • Event Sourced Aggregate is implemented by j5ik2o/event-store-adapter-java
• Read Model Updater
  • Lambda to build read models based on journals
  • Locally, run code that emulates Lambda behavior (local-rmu)
• Read API Server
  • API is implemented by GraphQL (Query)

System Architecture Diagram

Development Environment

• Tool Setup
• Build and Test

Local Environment

• Debugging on Local Machine
• Debugging on Docker Compose

Links

• Common Documents