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Real-time Ops
Case Study

Smart Irrigation Zambia

Smart Irrigation Zambia — Full-stack e-commerce and operations platform for selling, quoting, and installing irrigation systems across Zambia

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Overview

Smart Irrigation Zambia is a Next.js 16 web application serving farmers (self-serve 5-step ordering with geolocation and site photos) and an admin operations team (live SSE dashboard, farm map, status pipeline).

Architecture

Browser (React 19) -> Next.js App Router (Server Actions/RSC) -> Prisma 7 -> PostgreSQL 16; SSE stream via /api/events over in-memory pub/sub.

Key Design Decisions

  • Server Actions for mutations; Route Handlers only where needed
  • In-memory realtime bus for SSE broadcasts
  • Client-only maps via dynamic import with ssr: false
  • Mockable payment layer separated from order logic

Features Implemented

Customer Ordering

  • Product grid with type filters
  • 5-step checkout: customer, location, farm, payment, confirm
  • Geolocation + draggable map
  • Site photo uploads
  • Order tracking by ID or phone

Admin Operations

  • Dashboard counts and revenue
  • Live orders table via SSE with toast + chime
  • Order detail with timeline and map
  • Product CRUD
  • Farm map with all farms

Challenges & Solutions

In-memory realtime bus is process-local

Replace with Redis pub/sub for multi-instance.

Future Enhancements

  • Real payment provider integration
  • Object storage for photos
  • Tests and CI

Deployment

Frontend

Vercel

Backend

Database

PostgreSQL (Docker)

CI/CD

GitHub Actions

Tech Stack

Next.jsReactTypeScriptTailwind CSSPrismaPostgreSQLNextAuth