TicketShow E-commerce Microservices App

Server-side network for the E-commerce ticketing application. Cloud Services & Distributed Systems.

Utilized:

• Kubernetes, Docker, Typescript, Jest, Supertest, React, Next.js, Nats, Node.js, Express.js, MongoDB, Stripe API, GitHub, Redis, Bull.

Features Implemented:

• Developed 5+ Node.js microservices hosted and containerized on Kubernetes using Typescript, Docker, GCP/GKE, MongoDB. Designed integrations with APIs like Stripe for payments ✅

• Used Kubernetes-focused architecture. K8s Ingress Nginx for load balancing. NATS streaming service and queue groups for equal event distribution. Improved SEO by leveraging server side rendering using Next.js ✅

• Implemented cross-service data replication to handle concurrency issues, making services easily discoverable,decentralized, with zero trust security ✅

• Developed robust test suites leveraging: Jest for unit tests, Postman and Supertest for integration testing, mock callbacks for event publication reporting, and Github Pipelines for: build, test, deploy, and CI/CD DevOps procedures ✅

Routes Documentation:

• Refer to this documentation for routing rules.

Microservices Breakdown:

• Auth, client, expiration, payments, orders, tickets, client (frontend)

Event Bus:

• Nats streaming service

Load Balancer:

• K8s Ingress Nginx

K8s deployments:

• infra/k8s

Common library:

• ticketing-npm

Video Walkthrough:

walkthrough.mp4

Getting Started 🐳 :

• Install dependencies in each service by cding into each service and running: npm install
• Ex: cd tickets -> npm install Building the first docker image:

 docker build -t yourDockerUsername/nameOfTheService .

Then push it to docker hub

 docker push yourDockerUsername/nameOfTheService 

To start all microservices, run the following command using Skaffold:

skaffold dev

This command will initiate the development environment and deploy the microservices using Kubernetes.

Environment Variables:

Make sure to provide the JWT key and Stripe secret key as an environment variable.

kubectl create secret generic your-secret --from-l
iteral NAME_OF_THE_KEY=VAL_OF_THE_KEY

Running Tests:

To run tests ☝️ for the microservices, use the following npm script from the serice that hosts tests:

npm run tests

To test nats streaming service: first port forward nats using

  kubectl port-forward <pod Name> <from matrching port>: <to forwarding port> 
  Ex: kubectl port-forward nats-depl-78874bcd8f-m6vxg 4222:4222

Make sure you are in the root directory wherere skaffold.yaml file is located

Common Troubleshoot:

Encountering errors like "502 Bad Gateway" or connection refused (econnrefused 127.0.0.1)?

• Delete the ingress

kubectl delete namespace ingress-nginx

• Reinstall it from the official website

Future Development: ❤️

• Frontend (client)
• Add in HTTPS support
• Add in email support
• Add in 'build' steps for prod cluster (building Docker images in a prod style)
• Create a staging cluster
• Adding addtional services