Go Performance Tales

"Crossing Streams" celebrates the power and flexibility of Go's `io.Reader` interface, arguing it's a foundational building block for composing robust and testable I/O pipelines. The article highlights how `io.Reader` enables easy swapping of data sources (files, networks, memory) and simplifies mocking for unit testing, fostering a decoupled and adaptable codebase. Ultimately, it positions `io.Reader` as a surprisingly elegant solution for handling diverse input streams in Go.