Description

This application is a user management system that uses database sharding and caching to increase performance. Additionally, it supports receiving messages to update users' profiles and grpc request to list user details

🚀 Technologies Used

• TS (TypeScript) — main language of the application
• Express — lightweight and fast web framework
• gRPC — efficient communication between microservices
• RabbitMQ — efficient communication between microservices
• Protocol Buffers (Protobuf) — defines gRPC contracts
• PostgreSQL — relational database
• Docker (optional) — for running dependencies (DB, etc.)
• JWT (JSON Web Tokens) — for service-to-service authentication

🧩 Microservices Structure

• users-api (this project):

  • Responsible for user creation and authentication
  • Generates and signs JWT tokens
  • Exposes a gRPC service (UserService) that returns user data
  • Link to repo: https://github.com/Natan-Lucena/users-sharding-api

• Files-API (another service):

  • Responsible saving users profile pictures in AWS S3
  • Send messages to a RabbitMQ Queue that is listened by users-api
  • Link to repo:https://github.com/Natan-Lucena/Rabbit-Image-Uploader

• products-api (another service):

  • Responsible for product creation and management
  • Validates JWTs received in REST requests
  • Uses gRPC to communicate with the users service
  • Creates products linked to the authenticated user

▶️ Running the Project

# Running Docker

$ Docker-compose up -d

# Run the migrates in all shards

$ npx prisma migrate deploy

# Instaling dependencies

$ npm install

# Running application

$ npm run start:dev

Routes

$ /users -> Post

$ /users/sign-in -> Post

This application must run alongside this repository: https://github.com/Natan-Lucena/Rabbit-Image-Uploader

This application must run alongside this repository: https://github.com/Natan-Lucena/products-go-api