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Queues, logs and retries
Move work off the critical path safely: delivery guarantees, ordering, backpressure, dead letters and replay.
Design durable enqueue, visibility leases and stale-ack protection.
Deliver signed events with retries, endpoint isolation and replayable delivery history.
Schedule email sends with suppression, provider feedback and honest ambiguous-outcome handling.
Schedule durable jobs with leases, retries and safe recovery after worker crashes.
Bridge a consistent snapshot to a retained change log and replay downstream safely.
Design retained partition logs with fenced consumer assignments and committed offsets.
Append versioned domain events and rebuild read models without duplicating effects.
Track versioned automated checks, reviewer decisions and publication state.
Track device commands through reconnects, deduplication and ambiguous acknowledgements.
Compute windowed aggregates with watermarks, late-event policy and recoverable state.
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