Executive Summary
Enabling 100% uninterrupted checkout operations with IndexedDB local caching and automated background cloud reconciliation.
Engineering Challenge
Network dropouts during holiday peak shopping caused stalled checkout queues and lost revenue.
Technical Solution
Built an Angular PWA using Dexie.js (IndexedDB) with RxJS delta sync queues and hardware ESC/POS receipt printer drivers.
Key Impact Metrics
- Zero Checkout Downtime
- 40+ Retail Stores
- <800ms Transaction Speed
- 100% Data Integrity