Laravel Next Shopping Cart System

A shopper signs in with a Google account, browses a paginated and searchable product list, and manages a cart — add, increment, decrement, remove. The cart is stored in MySQL through the API rather than in the browser, so it persists across reloads and devices.

• Product routes are public. User and cart routes sit behind a middleware that verifies the Firebase token on every request, and the signed-in user is synced into the database.
• Optimistic cart: a click updates the Redux store immediately, so the interface never waits on the network.
• Debounced batch sync: cart changes are collected and sent to a single batch-update endpoint after a 1.5-second pause, instead of one request per click.
• Built as a single-page app with lazy loading, and with the Laravel ORM queries optimised.

Docker Compose runs MySQL, the Laravel API, the Next.js front end and phpMyAdmin together. The one prerequisite is a Firebase project with Google sign-in enabled, whose credentials are supplied before starting.

docker-compose up -d --build

It can also run without Docker on a local WAMP stack. The database is seeded with 20 sample products. The project runs locally; there is no hosted demo.