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

Each event flows through a series of transformation stages, with built-in support for filtering, mapping, and conditional routing.

const throttled = stream.throttle( rps: 100, burst: 200 ); const deduplicated = stream.dedup( key: 'event.id', window: 60000 );

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

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

await stream.on('user.created', async (event) =>  console.log(event.data.email); );

Rate limiting is built in: configure token buckets, sliding windows, or adaptive limits that respond to backpressure.