Design patterns for betting app developers

The text discusses common realtime problems faced by betting companies and proposes architectural design patterns that can be useful for developers. Problem 1 is the unpredictable number of live update recipients, which can be addressed using a pub/sub pattern to distribute data asynchronously. Problem 2 involves maintaining consistent data synchronization across devices, with solutions including serial JSON patches and CRDTs (conflict-free replicated data types). Problem 3 focuses on upstream gameplay events, suggesting the use of message queues, serverless architecture, and streams for fault tolerance and load management. The author also highlights Ably's Four Pillars of Dependability: performance, integrity, reliability, and availability.