Supabase's Realtime Presence feature allows you to track and synchronize shared state between connected users in real-time. This capability enables you to build collaborative applications where users can see each other's status, actions, or any custom state information instantly.
Key features
- Real-time state synchronization: Track and update shared state across multiple clients.
- Event-based tracking: Listen to 'sync', 'join', and 'leave' events for state changes.
- Custom state definition: Share any type of state information between users.
- Unique client identification: Use auto-generated or custom keys to identify clients.
- Channel-based organization: Group users and their states into specific channels or rooms.
- Easy state management: Track, untrack, and update state with simple method calls.
Benefits:
- Real-time user tracking: Monitor which users are currently active or online.
- Enhanced interactivity: Create more engaging, collaborative user experiences.
- Reduced complexity: Implement shared state features without building custom synchronization logic.
- Flexible use cases: Adapt the feature for various applications, from simple online indicators to complex collaborative tools.
Realtime Presence is particularly valuable for:
- Collaborative document editing platforms
- Multiplayer games showing player positions or status
- Team collaboration tools with user availability indicators
- Live streaming platforms displaying viewer counts and engagement
- Project management applications with real-time task assignments
- Social media platforms showing active users in a group or chat
Supabase's Realtime Presence feature provides a powerful tool for creating interactive, real-time applications that require shared state management, allowing developers to focus on creating unique and valuable user experiences.