Changelog

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

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

stream.pipe(retry( maxAttempts: 3, backoff: 'exponential' ), timeout(30000)).subscribe(console.log);

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

Changelog

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

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

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