Cloud Computing

lab02

It is a standalone Java microservice implemented with Maven and the built-in com.sun.net.httpserver HTTP server. A server starts on port 8080 accepting CRUD operations for /tables and /waiters.

• Data is stored in PostgreSQL via JDBC using a DATABASE_URL loaded from .env.
• The service auto-creates the tables and waiters schema on startup.
• Responses are JSON serialized with Jackson, and custom exceptions return consistent error codes.

lab04

It is composed of four independent projects:

• Frontend/ — React + Vite UI on port 5173
• Backend/ — Django API gateway on port 8079
• RouteService/ — Spring Boot route optimization on port 8081
• StoreService/ — Spring Boot store persistence on port 8082

The gateway forwards requests to backend services:

• GET /api/waiters/{id} → FluxoService on 8080 (no auth)
• POST /api/routes → RouteService on 8081 (API key)
• POST /api/stores → StoreService on 8082 (API key)

Quick run order:

1. Start lab02 FluxoService first.
2. Start RouteService.
3. Start StoreService.
4. Start the Django Backend gateway.
5. Start the React Frontend.

For details on each subproject, see the nested lab04/README.md and the individual subdirectories.