The NodeJS Cluster Module
This book is 100% complete
Completed on 2017-11-19
About the Book
NodeJS processes runs on a single process, which means it does not take advantage from multi-core systems by default. If you have an 8 core CPU and run a NodeJS program via
$ node app.js it will run in a single process, wasting the rest of CPUs.
Hopefully for us NodeJS offers the cluster module that contains a set of functions and properties that help us to create programs that uses all the CPUs. Not a surprise the mechanism the cluster module uses to maximize the CPU usage was via forking processes, similar to the old fork() system call Unix systems.
Understanding the NodeJS cluster module
- Introducing the cluster module
- A basic example
- Comunicating master and worker processes
Using cluster module with HTTP servers
- How cluster module works with network connections ?
- Other alternatives to cluster module load balancing
Using PM2 to manage NodeJS cluster
- Introducing PM2
Graceful shutdown NodeJS HTTP server when using PM2
- Starting a HTTP server
- How to shutdown properly an HTTP server ?
- Graceful shutdown/restart with and without PM2
The Leanpub 45-day 100% Happiness Guarantee
Within 45 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.
See full terms
Free Updates. Free App. DRM Free.
If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).
Most Leanpub books are available in PDF (for computers), EPUB (for phones and tablets), MOBI (for Kindle) and in the free Leanpub App (for Mac, Windows, iOS and Android). The formats that a book includes are shown at the top right corner of this page.
Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.