Functional RequirnmentsNon functional RequirnmentsDesign ExpectationsMessage Format Primary KeysAPIMessaging protocol high-level-architectureSession ManagementSession Management Handling LoadScalabilityBottleNecksOptimizations Rich Communication suite Functional Requirnments one to one / group chat support for multimedia - text / images / video / loccationRead receipt / Message status Last seen Push notifications Non Functional Requirnments No latency / No lag HA ( high … Continue reading Realtime Messaging Services Design