The library is a simple example of a project that uses the command query responsibility segregation ant the materialized view design patterns.

Simplified component flow diagram:

0. Make gradle executable

chmod +x ./gradlew

1. Build services

./gradlew :order-service:bootJar :order-updater-service:bootJar :order-view-service:bootJar :transaction-grouper-service:bootJar 

2. Start dockerization of the project

docker compose up --build -d

3. Create debezium connector

curl -i -X POST -H "Content-Type:application/json" http://localhost:8083/connectors/ -d @config/connectors/register-postgres.json

4. Application is available on http://localhost:8080 (business microservice) and http://localhost:8180 (view microservice)

5. Swagger OpenAPI specification can be found at ./order-service/src/main/resources/openapi/order-service.yml (business API) and ./order-view-service/src/main/resources/openapi/order-view-service.yml (view API). The Insomnia export can be used as an example ./insomnia_export.json