This is a train ticket demo app with code examples used in the article. It consists of a few business rules that controls which ticket should be presented based on some input data such as a seat class, travel distance, etc. There are 2 groups of endpoints that from the business point of view do the same. First one is a standard Java approach, business rules are created in a form of if..else statements. The second one is a Higson approach.
It's a Spring-boot app, to run just mvn spring-boot:run. 8090 is a default port.
/product/hyperon/v1/product/hyperon/v2/product/hyperon/v3/product/hyperon/v4
/product/v1/product/v2