Tech Insights on NodeJS, Javascript, Mongodb

Clustering & Inter Process Communication (IPC) in NodeJS

Aug 18, 2018 5 mins read

Nodejs

Introduction

A single instance of Node.js runs in a single thread. This does not allow to take advantage of multi-core systems automatically. However, by leveraging ‘cluster module’ one can take advantage of multiple CPU cores. Clustering improves your app’s performance and lets you achieve zero downtime (hot) deployments easily. Also keep in mind that number of workers that can be created is not limited by the number of CPU cores of the machine. Clustering is a must-have for any Node.js production app and there is no reason not to use it.

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