Auth

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

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

await stream.ack(event.id); const pipeline = stream.filter(e => e.amount > 100).map(e => ( ...e, fee: e.amount * 0.03 )).on('error', (err) => logger.error(err));

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

Auth

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

const client = new querydb.Client( auth: 'Bearer token', retry: true, timeout: 30000 );

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.