So What Factors have made Node.js so Popular?
Ideal for real-time applications
Node.js has the ability to rapidly create real-time apps meant for multiple users. Examples of such apps are gaming and chatting apps. Its synchronization process is inherently fast and serves both the client side and server side.
Allows faster data streaming
Node.js has real-time video and audio encoding, which means that even the requests taken as isolated events are actually data streaming. This also reduces the processing time required by developers because Node.js can process requests without delays. Synchronous processing in an app assumes that code is executed in a sequence. Each existing request blocks a new thread, making other requests wait. But asynchronous processing allows requests to be processed in parallel. That helps Node.js make the most of single threading, resulting in short response time and concurrent processing.