Ticketingapp microservices

Technologies used

• Virtualization :
  • Docker: Dockerizing apps
  • Kubernetes: Container orchestration
  • Skaffold: Handles the workflow for building, pushing and deploying containers
  • Ingress-nginx: Ingress Controller
• Backend: Express.JS
• Streaming messages: Nats-streaming
• Queue system: Bull.js
• Database:
  • MongoDB , mongoose as ODM
  • Redis
• Payments: Stripe
• Frontend: Next.js
• Endpoint validation: Joi
• Auth: Passport & Passport-local & jsonwebtoken
• Testing: Jest & supertest
• Extras:
  • Typescript
  • Prettier

Features

• Consistent Error handling
• JWT auth based
• In-Memory Databases for Tests
• Server side rendering
• event streaming using nats-streaming-server

Things I learned so far

• Data consistency is so crucial, you need to keep following the same structure you used over and over across all services.
• Seprate code that will be shared across the services into middleware or standalone services
• Testing each service is important to make sure that we covered all the requirements
• Cross namespace service communication
• Code sharing using npm
• how to solve concurrency problems of using streaming service
• Redirecting imports using jest
• Mock functions inside jest
• Convinece Document methods (mongoose)
• To do test concept
• Optimstic concurrency control (OCC) mongodb
• Lock a mongodb document concept
• Scheduling jobs with Bull Js
• Github actions