My Microservices Project

Click Here to view the Architecture Diagrams

Tech Used

• Kubernetes 🕸 (Container Orchestration)
• Docker 🐳 (Containerization)
• Node, Express JS (Backend)
• React ⚛ (Frontend)
• Postgres 🐘 (Database)
• Travis CI (Testing and Continuous Integration) 👷‍♂️

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Kubernetes Cluster

Explanation

Service	Tech Used	Description
Client	React JS Nginx Server	This is the front end of the app The client container has Nginx installed with the built react code Nginx serves the built react app from build folder
Auth	Node JS Postgres SQL	Handles request to /api/auth Registration and Login of Users Check if user is student or teacher
Teachers	Node JS Postgres SQL	/api/teachers Handles all functionality of teachers Has separate DB. Hence independent of all services Communicates with Students service using AMQP(Asynchronous Messaging Queue Protocol)
Students	Node JS Postgres SQL	/api/students Handles all functionality of students Has separate DB. Hence independent of all services Communicates with Teachers service using AMQP
Ingress Nginx	Ingress Nginx Controller	Gateway between the outside traffic and our Kubernetes cluster Routes traffic to appropriate service

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Microservices Architecture

Explanation

Event	Description
Annoucement	Teacher Creates an announcement. Stores in Teachers DB announcement_created event is created. Passed to RabbitMQ via AMQP RabbitMQ transfers this event to Student service Student saves this announcement info in its DB
Comments	Student creates a comment. Stores in Student DB comment_created event created. Passed to RabbitMQ via AMQP RabbitMQ transfers this event to Teachers service Teacher saves this announcement info in its DB
Auth	Auth services is independent. Does not create or receive any events It maintains its own DB of users.

Teachers Service

1. Teachers can view and create new announcements

2. Teachers can see all comments made by students. Comments can also be deleted

Students Service

1. Student can view all announcements

2. Student can make a new comment on an announcement

Auth service

1. Register or Login a new user (student and teacher)

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Install and run locally

Setup the Ingress Nginx Controller

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v0.48.1/deploy/static/provider/cloud/deploy.yaml

Check the installation

kubectl get pods -n ingress-nginx

Create all the Kubernetes Objects

kubectl apply -f k8s/

Check out the app on localhost:80