Case Study: Tasie Meals Order Platform — Real‑Time Menu, Cart & Checkout

A complete meal ordering platform built with React (UI), Redux (global state), and Firebase Firestore (data). Dynamic menu from Firestore, cart with optimistic updates, and a checkout flow with batched writes + retries. Redux slices isolate cart/menu logic; memoized selectors keep renders snappy. CSS Modules + SASS keep styles scoped and predictable. Lighthouse stays in the 90s thanks to code‑splitting and image optimization. If I rewrote it in Next.js now, I’d keep Redux for cart ergonomics and use Server Actions for checkout.