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Chapter 7: Presence Detection
Last Updated: January 9, 2026
Ashish Pratap Singh
5 min read
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Chapter 7: Presence Detection
Introduction
What Is Presence?
Presence Architecture
Connection and Disconnection
Activity Detection
Subscribing to Presence
Scaling Presence
Typing Indicators
"Last Seen" Timestamps
Privacy Considerations
Performance Optimizations
Interview Questions
Summary
References
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Course Introduction
