What hibernation changes in the relationship between the WebSocket connection and the Durable Object's active compute lifetime.
Durable Object WebSocket Hibernation
A three-part series on what WebSocket hibernation actually changes in Durable Object architecture. First: the runtime mental model. Second: why the billing impact can be dramatic for long-lived but mostly idle real-time systems. Third: how hibernation changes connection density without changing the core scaling rule.
Why hibernation can reduce duration charges dramatically when connections stay open but messages are infrequent.
Why hibernation improves idle connection efficiency, but throughput still scales by sharding work across object identities.
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The Through-Line
without hibernation: connected socket keeps DO awake with hibernation: socket stays connected DO can sleep between events
That separation between connection lifetime and compute lifetime is the whole story.
Memory Line
WebSocket hibernation is not about closing the connection. It is about letting the Durable Object stop paying active-compute rent while the connection remains accepted.
3-part series