DataFish

A microservices e-commerce fish store built for observability demos. 8 services, 5 languages, deployed on bare metal EC2 with systemd.

Architecture

                         ┌──────────────────┐
                         │     Frontend     │
                         │  React + Vite    │
                         │    port 3000     │
                         └────────┬─────────┘
                                  │
                         ┌────────▼─────────┐
                         │   API Gateway    │
                         │  Node.js/Express │
                         │    port 8080     │
                         └──┬────┬────┬─────┘
                            │    │    │
              ┌─────────────┘    │    └─────────────┐
              │                  │                  │
    ┌─────────▼────────┐ ┌──────▼──────────┐ ┌─────▼──────────────┐
    │ Product Service  │ │  Order Service  │ │Notification Service│
    │ Java/Spring Boot │ │ Python/FastAPI  │ │      Go/Gin        │
    │   port 8081      │ │   port 8082     │ │    port 8083       │
    └──────────────────┘ └──┬────┬────┬────┘ └────────────────────┘
                            │    │    │
              ┌─────────────┘    │    └─────────────┐
              │                  │                  │
    ┌─────────▼────────┐ ┌──────▼──────────┐ ┌─────▼──────────────┐
    │ Payment Service  │ │Inventory Service│ │ Analytics Service  │
    │ Python/FastAPI   │ │Java/Spring Boot │ │  Python/FastAPI    │
    │   port 8084      │ │   port 8085     │ │    port 8086       │
    └──────────────────┘ └─────────────────┘ └────────────────────┘

Service	Language/Framework	Port
Frontend	React + Vite	3000
API Gateway	Node.js + Express	8080
Product Service	Java + Spring Boot	8081
Order Service	Python + FastAPI	8082
Notification Service	Go + Gin	8083
Payment Service	Python + FastAPI	8084
Inventory Service	Java + Spring Boot	8085
Analytics Service	Python + FastAPI	8086

Deploy to EC2

./scripts/deploy-to-ec2.sh <ec2-hostname> <pem-file>

Local Development

./scripts/install-all.sh
./scripts/start-all.sh

App runs at http://localhost:3000

Prerequisites

• Java 17+
• Python 3.8+
• Go 1.24+
• Node.js 18+