seniorWebSockets
How do you handle failover and high availability in WebSocket systems?
Updated May 6, 2026
Short answer
Failover is handled using redundant servers, load balancing, and automatic reconnection strategies.
Deep explanation
High availability requires multiple WebSocket nodes across zones or regions. If a node fails, clients reconnect to another node using DNS failover or load balancer rerouting. Session state is externalized via Redis or database to avoid loss.
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