CQRS pattern over Event Driven Architecture

Technologies:

Apache Zookeeper
Apache Kafka
Mysql
MongoDB
Docker
Docker compose
Java 17
Spring Boot
Maven
JUnit
Cucumber
Jmeter

The main propose of this project is test CQRS pattern over Event Sourcing Architecture (EDA). This project consists in two spring boot microservices (device-command, device-query), one to command and other to query operations. Additionally, to run all pieces of project it´s necessary deploy and run docker containers for two MySql and MongoDB databases, Apache Zookeeper and Apache Kafka message broker.

In the next diagram you can look how this project was designed:

These are all the use cases available to users:

Requirements 📋

To run this project you need install next requirements:

Installation 🔧

To generate jar files run the following command in root path:

mvn clean package

Run in containers 🐳

Run containers of Zookeeper, Apache Kafka, MySql, MongoDB, Device-command, Device-query.

docker-compose up -d

If you prefer you can stop containers for device-command and query-command then you can launch the Spring Boot microservices with the followings instructions:

Microservice device-command 🚀

Run in terminal the following command:

java -jar device-command/target/device-command-0.0.1-SNAPSHOT.jar.original

Microservice device-query 🚀

In other terminal run the following command:

java -jar device-query/target/device-query-0.0.1-SNAPSHOT.jar.original

OpenAPI definition

device-command

device-query

Swagger UI

device-command

Running manual test ⚙️

Once all microservice started you can test this service using the postman collection. with name tfg-postman-collection.json in resources folder:

Running unit test 🧪

Then in terminal run:

mvn test

Running performance test 🎯

Previously do you need run the system:

docker-compose up -d

Then in terminal over performance-test path run:

first time

mvn clean verify

followings:

mvn jmeter:jmeter

Running integration test 🔒