CQRS on iPads (occasionally connected devices)

Use case — Tiller POS

Tiller is a smart POS on iPad with a powerful cloud-based back-office to analyze sales. As a cash register application, we must save everything that appends on the application. Event sourcing/CQRS fit perfectly our need as I said in this article: https://medium.com/tiller-systems/pourquoi-avoir-choisi-dutiliser-l-architecture-cqrs-e04c082f8b5f (in French).

Our clients are mainly restaurants. They often use many POS (up to one per waiter) to be more efficient in taking order. Unfortunately…