Platform Architecture

Components Overview

Frontend (Angular)

• Connects to the NestJS API backend for data retrieval and real-time updates.
• Does not directly interact with any database or caching layer.

Backend (NestJS)

• Serves as the central hub for managing and processing requests.
• Interacts with:
  • PostgreSQL: Stores relational data such as user accounts, configurations, and logs.
  • InfluxDB: Handles time-series data like meter readings and telemetry.
  • Redis: Used for:
    • Caching: Frequently accessed data (e.g., session tokens, configuration values).
    • Queues: Background job processing and real-time event handling (e.g., WebSocket message distribution).

PostgreSQL

• Manages structured, relational data.
• Stores business-critical data with long-term persistence.

InfluxDB

• Optimized for time-series data.
• Enables rapid ingestion and querying of time-stamped data.

Redis

• Functions as an in-memory data store for high-speed operations.
• Used for:
  • Session storage for authentication tokens.
  • Caching expensive query results from PostgreSQL or InfluxDB.
  • Pub/Sub messaging and job queues for background tasks.

Deployment Overview

• AWS EKS – Manages containerized frontend and backend services.
• AWS RDS – Provides managed PostgreSQL database services.
• AWS EC2 – Hosts InfluxDB for time-series data storage.
• AWS ElastiCache – Manages Redis for caching and high-speed data access.
• AWS VPC – Defines secure network infrastructure.
• AWS ALB – Handles load balancing for application traffic.

Service Deployment Details

Frontend Deployment

• Platform: Deployed on AWS EKS as a Docker container.
• Configuration:
  • Serves static assets via NGINX within Kubernetes pods.

Backend Deployment

• Platform: Deployed on AWS EKS as a Docker container.
• Configuration:
  • Exposed via Kubernetes Ingress, secured with AWS ALB.
  • Communicates with PostgreSQL (AWS RDS) and InfluxDB (AWS EC2).
• Security:
  • Manages secrets using Kubernetes Secrets.

PostgreSQL Deployment

• Platform: Managed via AWS RDS for high availability.
• Configuration:
  • Secured with private VPC access.
  • Optimized with read replicas for heavy read workloads.

InfluxDB Deployment

• Platform: Hosted on AWS EC2.
• Configuration:
  • Uses high-performance instance optimization.
  • Secured via VPC firewall rules for backend-only access.

Redis Deployment

• Platform: Managed via AWS ElastiCache for high-performance, in-memory data storage.
• Configuration:
  • Optimized with read replicas for heavy read workloads.
  • Secured with private VPC access.