CQRS and Event Sourcing example of calculator

Simple example of calculator that is implemented on the spring boot backend using Axon Framework + websocket communication with FE.

How to start project

• Run docker environment using docker-compose.yaml
• FE
  • install and run it in folder web using commands yarn, yarn re:build and yarn start
• BE
  • Run mvn clean install for backend-parent pom
  • Run Springboot app BFF
  • Run Springboot app Calculator command service
  • Run Springboot app Calculator projection service

Technologies used

• Java 17
• Springboot 2.7
• Axon Framework 4.6
• MongoDB 5 + MongoDB java driver 4.8
• Websocket
• NodeJS 18
• Yarn 3
• React 18
• ReScript 10

Application schema