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Delivery Map Presence at Scale: A 4-State Room Lifecycle for Trusted Event Flow

Short answer: use a room lifecycle with explicit token scope, presence state, and recovery rules; pick the realtime API that makes those boundaries visible instead of hiding them in a client SDK.

  • Four-state lifecycle: authenticated, subscribed, publishing, recoverable
  • Server determines workspace access, client only renders presence and sends intent
  • Three streams maintained: authentication, subscription state, business events

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