Ecommerce-backend-Microservice-architecture

This is an E-commerce backend project built on Microservice architecture using the following techstack:

1. Spring boot for developing services
2. Eureka discovery server and client-server dependencies for microservice environment
3. Spring Cloud API gateway for API gateway
4. Apache Kafka (Asynchronous communication between services)
5. Zipkin for distributed tracing of requests
6. Resilience4J for fault tolerance
7. MongoDB and H3 database

Architecture diagram:

Services available:

1. Product-Service - for fetching list and details of products
2. Order service - for placing orders. Also publishes messages on Kafka.
3. Inventory service - for checking if the specified product exists or not
4. Notification service - A message will be published in the Kafka topic upon confirmation of an order. This service consumes that message and sends an email to the user mail with order details.

Setting up in local:

1. Java 11 environment
2. You need to have Kafka. It can be installed by running the docker-compose in the project root folder by docker compose up -d.
   Docker must be running in order to run docker scripts.
3. Mailjet account for api-keys
4. To run the whole application - in the root folder, run ./mvnw install && ./mvnw spring-boot:run -pl application (quick and easy).
   If you have maven installed, run mvn build && java -jar target/the-package-name.jar which is th mostly used way of building spring applications.
   
   Now all the applications must be up. You can check the application ports in respective application.yml file.