24.1. Iteration 3 Requirements
Provide failover to local services when the remote services cannot be accessed. For example, if the remote product database can't be accessed, use a local version with cached data.
Provide support for POS device handling, such as the cash drawer and coin dispenser.
Handle credit payment authorization.
Support for persistent objects.
Get Applying UML and Patterns: An Introduction to Object-Oriented Analysis and Design and the Unified Process, Second Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
