The cluster module provides a fairly easy way to improve performance drastically by utilizing all CPUs on a server. This video shows how this can be done.
- [Instructor] Node.js runs in a single process,…and basically in one thread.…This means that it does not fully…utilize all CPUs on a host.…To remedy this, Node.js provides a cluster module,…that will spin up chart processes.…Under the hood, Node.js then…uses interprocess communication to distribute the load…between the chart processes, round robin.…Node cluster is not the only way to achieve this.…For example, if you use the process manager PM2,…as we will do later, it can be…configured to scale up to all CPUs as well.…
Still, to understand the basic principle behind clustering,…we will now implement this from scratch using Node cluster.…Before we optimize this, let's run a little load test…against our current application.…So, on the console, I'm using a patch bench,…and we want to concur and see if 10,…and I'm running one hundred request against the website.…
This takes a little bit, and we…see that we have a time per request…of around 39 milliseconds.…Now, let's see what we can gain by using the cluster module.…
Author
Released
2/7/2019- Creating a template engine
- Using MongoDB and Mongoose for user management
- Authenticating and authorizing users
- Adding cookies and sessions to Express
- Creating a login form with Passport
- Handling file uploads
- Storing and serving images
- Deploying an Express application
- Securing an Express application
- Running behind a web server
Skill Level Advanced
Duration
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Introduction
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What you should know1m 20s
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Get your tools ready2m 1s
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1. Know the Building Blocks and Internals of Express
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Important Express middleware1m 27s
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2. Use MongoDB and Mongoose to Manage Users
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Connecting to MongoDB3m 27s
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3. Authenticate and Authorize Users
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Introduction to Passport1m 39s
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Adding Passport to Express3m 55s
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Providing a logout link2m 1s
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Protecting routes3m 35s
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4. Handle File Uploads and Process Images
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File upload basics3m 9s
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Serving images6m 32s
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5. Deployment and Running in Production
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Add logging5m 3s
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Conclusion
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Next steps44s
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Video: Using the Node.js cluster module