Streaming

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

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

stream.pipe(map(e => e.data), buffer(100, 5000), flatMap(batch => fetch('/api/bulk',  body: JSON.stringify(batch) ))).catch(console.error);

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

Streaming

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

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

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