An Event Driven Microservices project, the coding language is Java 17 and SQL database used for Data. Axon framework used for event-driven microservice systems, based on the principles of Command-Query Responsibility Segregation (CQRS) and Event Sourcing. Google Guava used too, that is an open-source “Collection Library” library for Java, it provides utilities for working with Java collections. As you dive deep into Guava you'll notice how it reduces coding errors, facilitates standard coding practices and boost productivity by making code concise and easy to read. There is 5 services in this project which the CommonService is the core and the others are requierde services.