how-to-large-files

How to handle large data in NodeJS?

The Node.js stream feature makes it possible to process large data continuously in smaller chunks without keeping it all in memory. One benefit of using streams is that it saves time, since you don't have to wait for all the data to load before you start processing. This also makes the process less memory-intensive.

Some of the use cases of Node.js streams include:

• Reading a file that's larger than the free memory space, because it's broken into smaller chunks and processed by streams. For example, a browser processes videos from streaming platforms like Netflix in small chunks, making it possible to watch videos immediately without having to download them all at once.
• Reading large log files and writing selected parts directly to another file without downloading the source file. For example, you can go through traffic records spanning multiple years to extract the busiest day in a given year and save that data to a new file.