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Use NATS JetStream durable consumers to get at-least-once event processing with replay after crashes, without building your own queue. A named consumer tracks acknowledged sequence so restarts resume safely.
Use NATS JetStream durable consumers with explicit acknowledgments and file storage to survive crashes without losing in-flight messages, and understand the latency and idempotency trade-offs.
Durable consumers in JetStream preserve acknowledgment state, enabling seamless restarts and full message replay. Learn how to configure them, avoid common pitfalls, and keep your event‑driven services robust.
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