1. Make delivery states explicit
Users should be able to see sent, delivered, failed, retried, or offline states clearly enough to trust the system.
Real-time systems are not defined only by sockets or event delivery. They are defined by delivery guarantees, visible state, recovery behavior, and the ability to diagnose failures under live load.
Users should be able to see sent, delivered, failed, retried, or offline states clearly enough to trust the system.
Connectivity loss, expired sessions, device switching, and replay logic should be part of the product model, not an afterthought.
Production real-time systems need traceable events, alerting, diagnostics, and enough backend structure to reason about failures fast.
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