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Node.js Resources, Tutorials and Guides
Node.js powers APIs, tooling, and full-stack applications worldwide. This hub collects server-side JavaScript tutorials, API design guides, and backend patterns from practitioners building real services.
86 articles · Updated June 4, 2026
Node's single-threaded, non-blocking model is its superpower and its footgun — understand the event loop and you'll avoid most performance traps.
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Frequently asked questions
Quick answers about this topic hub.
What is Node.js used for?▾
Node.js runs JavaScript outside the browser, making it popular for building APIs, real-time apps, command-line tools, and backend services. Its non-blocking I/O model handles many concurrent connections efficiently.
Should I use Express or a newer framework?▾
Express remains the most widely used and well-documented Node framework, great for learning and most projects. Alternatives like Fastify (performance) and NestJS (structure) are worth considering as your needs grow.
How does Node handle asynchronous code?▾
Node uses an event loop to run non-blocking operations. Instead of waiting for I/O like file or network access, it registers callbacks (or resolves promises via async/await) and continues processing other work.