Streaming Pipelines with io.Reader and io.Writer in Go
Go’s io.Reader and io.Writer interfaces are intentionally tiny, but they enable a large class of streaming programs. Files, HTTP bodies, compression streams, hashes, encoders, sockets, and in-memory buffers can all participate in the same pipeline without loading the entire payload into memory.
The key design principle is to pass streams through components instead of converting them to []byte or string at every boundary.
Start with the two core interfaces The standard library defines the essential contracts as methods equivalent to:
