Minishop backend

Microservice-based webshop backend.

🚀 Tech stack

• RabbitMQ
• SAGA Choreography pattern
• Microservice apps in NodeJS, PHP, Python and Java

🎯 Motivation

I created this project to dive into the microservice patterns and RabbitMQ best practices. The goal was to implement a webshop backend with only mock functionality and in-memory databases, focusing on the SAGA Choreography pattern and RabbitMQ configurations in different programming languages.

💡 Features

• RabbitMQ communication between microservices
• Microservices:
  • Cart service:
    • Stack: NodeJS, ExpressJS
    • Functionality: Receives POST /checkout request
  • Order service:
    • Stack: NodeJS, NestJS
    • Functionality: Creates, completes and cancels orders
  • Payment service:
    • Stack: PHP, Laravel
    • Functionality: Makes payments
  • Shipping service:
    • Stack: Python
    • Functionality: Makes shippings
  • Mail service:
    • Stack: Java, Spring Boot
    • Functionality: Sends emails

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App workflow

Microservice setup

Exchanges

name	type
carts	topic
orders	topic
payments	topic
shippings	topic
emails	topic

Queue bindings

exchange	routing key	name
carts	cart.checkout	orders.create-order
orders	order.created	payments.make-payment
orders	order.completed	emails.send-order-completed-notification
orders	order.cancelled	emails.send-order-cancelled-notification
payments	payment.success	shippings.create-shipping
payments	payment.failed	orders.cancel-order
payments	payment.failed	emails.send-payment-failed-notification
shippings	shipping.success	orders.complete-order
shippings	shipping.failed	orders.cancel-order
shippings	shipping.failed	payments.cancel-payment
shippings	shipping.failed	emails.send-shipping-failed-notification

Test

Payment

card number	result
3232323232323232	Payment will be failed immediately
4242424242424242	Payment will be failed with 3 second delay
5252525252525252	Payment will succeed with 3 second delay
Any other card number	Payment will succeed immediately