querycore

API

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

The core querycore 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);

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.

API

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

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

Rate limiting is built in: configure token buckets, sliding windows, or adaptive limits that respond to backpressure.

See also