How Does Node.js Achieve Concurrency?
Too Long; Didn't ReadHow would you react if you visit the Amazon home page and get a message saying that maximum number of users are already accessing the website and you need to wait for your turn?
Concurrency is the key to an acceptable application behaviour. Node.js supports concurrency even with a single thread. This is made possible by an Event Loop. But internally, the Event Loop is driven by the Event Demultiplexer.