Now you will have a stream-handbook command that will open this readme file in your $PAGER. Otherwise, you may continue reading this document as you are presently doing.Streams come to us from the earliest days of unix and have proven themselves over the decades as a dependable way to compose large systems out of small components that do one thing well. In unix, streams are implemented by the shell with | pipes. In node, the built-in stream module is used by the core libraries and can also be used by user-space modules. Similar to unix, the node stream module's primary composition operator is called .pipe() and you get a backpressure mechanism for free to throttle writes for slow consumers.