Client
Metrics are published to standard formats (Prometheus, CloudWatch, DataDog) with zero configuration.
The core relayhub object is a lightweight wrapper that manages the lifecycle of your event stream.
const batch = stream.pipe(filter((e) => e.type === 'payment'), batch(100), debounce(5000));Error handling is explicit: catch failures at any stage, log them, and route bad events to a dead-letter queue without stopping the main pipeline.