Microservices POC with gRPC & Event-Driven, running in Docker Containers, allowing CRUD operations on files.

Backend Services

• Core Service:
  • dispatches incoming requests to Auth Service and to Storage Service.
  • features a Pub/Sub mechanism with Redis.
  • includes a Key-Value Store with Amazon DynamoDB, internally used by an i18n system which reloads key-value pairs when NewKeyValuePairEvent was triggered
  • sends welcome emails when UserSignUpEvent was triggered
• Auth Service:
  • authorizes access inside the application
  • generates JWT Access Tokens & Refresh Tokens and QR Codes if MFA is enabled.
• Storage Service:
  • responsible for storing files, either in a local filesystem, or to a configured Amazon S3 Bucket.
• Queue Service:
  • a message broker interface, with RabbitMQ and Amazon SQS implementations.
  • provides logic for emitting and listening to events (e.g., UserSignUpEvent, NewKeyValuePairEvent)

Frontend

• React minimalistic app

Monitoring

• Prometheus
• Grafana
• OpenCensus

Reverse Proxy

• NGINX

Services Architecture

AWS Architecture (V1)

AWS Architecture (V2)