Auth
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.
Authentication tokens are rotated silently in the background; your code never handles credentials directly.
const batch = stream.pipe(filter((e) => e.type === 'payment'), batch(100), debounce(5000));Rate limiting is built in: configure token buckets, sliding windows, or adaptive limits that respond to backpressure.