How to write a service

1. Generate the source code using https://start.spring.io/#!type=gradle-project&language=java&platformVersion=2.3.4.RELEASE&packaging=jar&jvmVersion=1.8&groupId=com.puglieseweb.core.services&artifactId=demo&name=demo&description=Core%20service&packageName=com.puglieseweb.core.services.demo&dependencies=web,kafka,cloud-stream,kafka-streams,lombok,h2,data-jpa

2 Structure the code as follows:

Benefits:

• Adapters and Business logic can be tested separately

• Changes are easier to change

• Communication can use multiple adapter