Droidcon Boston '19: Working Offline: Data Sync Patterns at Toast

Cloud-based tablet POS systems have revolutionized the restaurant industry, but what happens when your internet connection drops? Ensuring uninterrupted service for your restaurant's tablets during outages and seamlessly reconciling data upon reconnection is a critical challenge.

This deep dive explores how Toast addresses this problem, offering insights into our evolving solution. We'll provide an end-to-end understanding of the complexities involved, covering key areas such as:

• On-Device Database Technologies: Learn how we leverage local databases to maintain functionality during internet disruptions.
• Secure Payment Storage: Understand the fundamentals of securely storing payment information on-device for continued operations.
• Direct Device-to-Device Communication: Discover how tablets communicate directly with each other to maintain operations offline.
• Sharing Business Logic: Explore strategies for sharing business logic between the app and the cloud for consistent functionality.
• Messaging Stacks: Analyze the strengths of various messaging stacks and how they contribute to resilience.
• Event Sourcing Patterns: Understand how event sourcing patterns are utilized to ensure data consistency and reconciliation.

Gain a comprehensive understanding of how Toast empowers thousands of restaurants to deliver exceptional customer service, even under challenging conditions. We'll also share practical patterns you can adapt and apply to your own applications to build more robust and reliable systems. This is essential knowledge for developers and businesses building or maintaining restaurant POS systems, tablet POS solutions, and cloud POS applications. Learn how to build offline POS functionality and ensure data synchronization for your business.