Guereza is a small example of distributed application design. It uses the following patterns:

• DDD
• AOP
• EventBus
• Event Sourcing
• CQRS

Moreover, the project implements the following features:

• Netty Server and Client
• Custom Injection Framework
• Custom Event Sourcing Framework

Building and running is easy with gradle:

$ gradle wrapper
$ ./gradlew build
$ java -jar build/libs/guereza-1.0-SNAPSHOT-all.jar

There is 4 available modules:

• server: aggregate and dispatch all events
• store: store events and let reducers act on them
• crawler and indexer: request URLs and index the content

You need to start one server and store. Then, you can start as many other modules as you want.