Building a fault-tolerant WebSocket mesh that handles 50K concurrent voice sessions.
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Connection Management
At 50K concurrent connections, you cannot treat each WebSocket as independent. Our connection pool groups sessions by region and maintains a heartbeat protocol detecting stale connections within 3 seconds.
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Graceful Degradation
- Connection pooling: Regional grouping with affinity routing
- Heartbeat protocol: 3-second stale detection
- Pod scaling: Horizontal autoscaling based on connection count
- Failover: Cross-region migration with session state transfer