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The core relaykit object is a lightweight wrapper that manages the lifecycle of your event stream.

Batching is automatic—control it via `batch(100)` or `batch({ size: 50, timeoutMs: 1000 })` to trade latency for throughput.

await stream.ack(event.id); const pipeline = stream.filter(e => e.amount > 100).map(e => ( ...e, fee: e.amount * 0.03 )).on('error', (err) => logger.error(err));

Graceful shutdown waits for in-flight events to complete, then closes connections cleanly—no lost events, no crashes.

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The core relaykit object is a lightweight wrapper that manages the lifecycle of your event stream.

await stream.ack(event.id); const pipeline = stream.filter(e => e.amount > 100).map(e => ( ...e, fee: e.amount * 0.03 )).on('error', (err) => logger.error(err));

Metrics are published to standard formats (Prometheus, CloudWatch, DataDog) with zero configuration.