This contains Practical DDD implementations for the Cargo Tracker Application across multiple programming languages and frameworks. It aims to demonstrate DDD concepts in the context of an execution platform. For a detailed walkthrough of the implementations please purchase the book -> https://www.amazon.com/s?k=practical+domain-driven+design+in+enterprise+java&crid=1R1SOSED7GAXW&sprefix=practical+domain%2Caps%2C389&ref=nb_sb_ss_i_1_16

The Cargo Tracker Application acts as the reference application for the DDD implementations. In terms of DDD concepts there are 4 main sub-domains of the Cargo Tracker application - Booking , Tracking , Routing and Handling. The sub-domains are solutioned as Bounded Contexts.

*In case of a modulithic implementation, the Bounded Contexts are individual modules within the monolith *In case of a microservices implementation, each Bounded Context may contain a single/set of microservices centered around the root aggregate *In case of a CQRS/ES implementation (Axon Framework), the Bounded Contexts may either be implemented as microservices or modules within a monolith. The implementation detail will detail the same

A high level summary of the use cases is given below. The various Commands / Queries and Events are listed below.

Booking Bounded Context - This deals with all aspects of Booking Business Capabilities of the Cargo Tracker Application

Commands
  - Book a new Cargo
  - Route a booked Cargo
Queries
  - Retrieve Cargo Details basis the Booking Number
Events (Producer)
  - Cargo Booked
  - Cargo Routed

Tracking Bounded Context - This deals with all aspects of Tracking Business Capabilities of the Cargo Tracker Application

Commands
  - Assign Tracking Number to a Routed Cargo
Queries
  - Retrieve Cargo Details basis the Tracking Number
Events (Consumer)
  - Cargo Booked
  - Cargo Routed
  - Cargo Handled

Handling Bounded Context - This deals with all aspects of Handling Business Capabilities of the Cargo Tracker Application

Commands
  - Handle a Cargo
Queries
  - Get list of Handling Events of a Cargo
Events (Producer)
  - Cargo Handled

Routing Bounded Context - This deals with all aspects of Routing Business Capabilities of the Cargo Tracker Application

Commands
  - Create a Voyage
Queries
  - Get Optimal Route for a Cargo
Events (Producer/Consumer)
  - None

The list below shows the current implementations available and what will be made available in the coming weeks. This is a 52-week exercise, so please check back for regular updates.

Implementation 1 (Available) - Spring Boot (Tomcat) + Spring Data + Spring Cloud + MySql + RabbitMQ

Implementation 2 (Available) - Jakarta EE 8 (Open Liberty 19.0.0.9) + MySql

Implementation 3 (Available) - MicroProfile 3.0 (Helidon v1.3.1) + Oracle DB Autonomous Cloud + RabbitMQ

Implementation 4 (Available) - MicroProfile 2.2 (Payara Micro) + MySql + Payara Clustered Events

Implementation 5 (Available) - Axon Framework 4.2 + Axon Server 4.2 SE

Implementation 6 (Available) - MicroProfile 2.2 (Kumuluzee v3.5) + MySql + RabbitMQ

Implementation 7 (Planned) - Quarkus