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Concept guides/Messaging and streams/Presence and online status

System designMessaging and streams

Presence and online status

Hard4 min read

Questions it teaches

Presence status serviceMedium40 min Presence system at scaleHard45 min

Related

Messaging and streams Data modeling and storage Consistency and money Reliability and failover Pipelines and analytics Real-time systems Scale and caching

Builds on: Data modeling and storage

Designing a parking lot4 min Designing a pastebin3 min

Leads to: Consistency and money

E-commerce inventory (overselling)3 min QR ticketing3 min

Leads to: Reliability and failover

Observability systems3 min Anomaly detection3 min

Leads to: Pipelines and analytics

Analytics architecture3 min Data pipelines & warehousing3 min

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