Streaming

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

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

const stream = new RelayKit( apiKey: process.env.API_KEY, region: 'us-east-1' );

The SDK provides both callback-based and Promise-based APIs, so you can use it with callbacks, async/await, or Observables.

Streaming

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

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

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