Streams — Backpressure and Chunked Processing

An Effect produces one value. A Stream produces many values over time. When you need to process a potentially infinite or very large sequence — database result sets, event logs, file lines, sensor readings — Stream is the right abstraction.

This chapter covers when to use Stream vs Effect, how streams process data in Chunks for efficiency, how to control flow with backpressure policies, and how to consume streams with Sink.