Cartel Shop – High-Performance Multi-Tab

Cartel Shop – High-Performance Multi-Tab E-Commerce Platform Full-stack e-commerce application engineered for speed, high conversion rates, and seamless user interaction across devices.

Key Highlights & Features: • Multi-Tab Cart Sync: Built real-time cart state synchronization using Zustand and the BroadcastChannel API, ensuring inventory and cart updates sync across multiple open browser tabs without refreshing. • Zero-Latency UX: Implemented optimistic state updates (useOptimistic) for instantaneous cart additions and coupon code verification. • Security & Payments: Integrates secure HttpOnly session handling and PCI-DSS compliant checkout processing.