This makes streams really powerful when working with large amounts of data, for example, a file size can be larger than your free memory space, making it impossible to read the whole file into the memory in order to process it. What makes streams unique, is that instead of a program reading a file into memory all at once like in the traditional way, streams read chunks of data piece by piece, processing its content without keeping it all in memory. Streams are a way to handle reading/writing files, network communications, or any kind of end-to-end information exchange in an efficient way. They are data-handling method and are used to read or write input into output sequentially. Streams are one of the fundamental concepts that power Node.js applications.

We can figure this out! What are streams? This article will help you understand streams and how to work with them. In the words of Dominic Tarr: “Streams are Node’s best and most misunderstood idea.” Even Dan Abramov, creator of Redux and core team member of React.js is afraid of Node streams. Streams in Node.js have a reputation for being hard to work with, and even harder to understand.

Express js