CODEWITHSUNDEEP
node.js
Rabbani_
Rabbani_

Reputation: 470

Is really NodeJS Singlethread or Multithread?

many question on stackoverflow and others website , some ones says NodeJS is Singlethread and someone says NodeJS is Multithread, and they have there own logic to be Singlethread or Multithread. But If a interviewer ask same question. what should I say. I am getting confusion here.

Upvotes: 1

Views: 4083

Answers (2)

Sagar Chaudhary
Sagar Chaudhary

Reputation: 1403

The main event loop in NodeJs is single-threaded but most of the I/O works run on separate threads. You can make it multi-threaded by creating child processes. There is a npm module napajs to create a multi-threaded javascript runtime.

However,the 10.5.0 release has announced multithreading in Node.js. The feature is still experimental and likely to undergo extensive changes, but it does show the direction in which NodeJs is heading.

So stay tuned!!

Upvotes: 7

Madara's Ghost
Madara's Ghost

Reputation: 175078

NodeJS runs JavaScript in a single threaded environment. You get to use a single thread (barring the worker_threads module, and spawning processes).

Under the scenes, NodeJS uses libuv, which uses OS threads for the async I/O you get in the form of the event loop.

Upvotes: 3

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