Ecommerce microservices application in Kotlin

Architecture Diagram

Microservices Architecture Design Patterns

In this project, I have implemented several design patterns commonly used in microservices architecture

Design Pattern	Tools
Service Discovery	Spring Cloud Netflix
API Gateway	Spring Cloud Gateway
Circuit Breaker	Resilience4j
Distributed Messaging System	Apache Kafka

How to set up the project?

1. Clone the repository.

   • Run the below command to download the code from Github repository to your local machine.

     git clone https://github.com/shaikrasheed99/kotlin-ecommerce-microservices.git

   • Run the below command to move to the application directory.

     cd kotlin-ecommerce-microservices

2. Make sure your machine has docker installed in it.

   • Make sure your terminal is in kotlin-ecommerce-microservices directory.
   • Run the below command to start the Zookeeper, Kafka broker & Kafdrop containers.

     docker compose up -d

3. Build & Start each service.

   • Before starting any service, make sure your postgresql database in your local is started.
   • Open a new terminal and execute the below command to start all the services at once.

   • ./start-all-services.sh 

   • Execute the below command to stop all the services at once.

   •  ./stop-all-services.sh 

   Services	Health API to validate	Expected success response
   Order Service	Postman - http://localhost:8081/actuator/health	Status - 200 & Body - { "status": "UP" }
   Product Service	Postman - http://localhost:8082/actuator/health	Status - 200 & Body - { "status": "UP" }
   Inventory Service	Postman - http://localhost:53391/actuator/health	Status - 200 & Body - { "status": "UP" }
   Notification Service	Postman - http://localhost:8083/actuator/health	Status - 200 & Body - { "status": "UP" }
   API Gateway	Postman - http://localhost:8080/actuator/health	Status - 200 & Body - { "status": "UP" }
   Discovery Server	Browser - http://localhost:8761/	You must see Spring Eureka default UI
   Kaf Drop	Browser - http://localhost:9000/	You must see Kafdrap default UI