Systems | Development | Analytics | API | Testing

Building a faster, more reliable, scalable, and efficient API requires the use of an appropriate framework and tools. The communication protocol used to build an API usually has a significant impact on its effectiveness and speed. Jump in with us and learn how to build a gRPC Node.js API.

In the fast-paced world of modern software development, performance is no longer just a backend concern—it's a critical driver of user satisfaction, infrastructure cost, and business growth. At NodeSource, we're excited to unveil a new feature in the N|Solid platform that takes Node.js application performance to a new level: N|Sentinel.

We're excited to share the latest N|Solid Runtime release for May 2025. N|Solid Runtime is the OSS runtime that powers N|Solid. Its a 100% compatible augmented version of Node.js developed by the expert engineers at NodeSource, and it connects with N|Solid to get the most relevant insights of your Node.js application.

The latest Node.js release has arrived, and it's not just another incremental update. It delivers meaningful improvements that directly address real-world pain points and opens up new possibilities for JavaScript on the server. In this article, we'll cut through the changelog noise and focus on what's genuinely worth getting excited about in this release. Let's get started!

We want to express our appreciation to the many contributors to this release including NodeSource team members @RafaelGSS, @juanarbol. Thank you for all your efforts to keep moving Node.js forward! Node.js 24 has officially landed! This release brings some exciting improvements to JavaScript developers, making Node.js faster, more capable, and more aligned with the latest JavaScript standards.

As spring blooms, so does the N|Solid—with our latest release bringing an exciting wave of new features, critical improvements, and behind-the-scenes optimizations. This update (v6.1.8) is part of our ongoing commitment to deliver the most insightful, stable, and powerful Node.js monitoring and debugging experience available. Here’s what’s new.

Increasing the test coverage of a backend application is key to ensuring its reliability, functionality, and robustness. Thanks to its intuitive API and agnostic approach to assertions, Mocha has emerged as one of the most popular choices for unit testing in Node.js. In this guide, you'll learn what Mocha is, understand how it works, explore its features, and see it in action with a complete example. Time to become a Mocha unit testing expert!

Monitoring Node.js applications effectively is no longer optional—it’s essential for ensuring performance, reliability, and a smooth user experience. With a range of observability and APM tools available, choosing the right one for your stack and team can be challenging. Whether you're tracking memory leaks, CPU spikes, or asynchronous bottlenecks, the right observability stack can save you hours of debugging and protect your user experience.

Node.js is designed to be asynchronous and non-blocking, making it highly efficient for handling multiple operations at once. Unlike traditional multi-threaded architectures, Node.js operates on a single-threaded event loop, meaning it executes JavaScript code in a single thread but can still handle multiple tasks concurrently. This is achieved through asynchronous I/O and event-driven programming, allowing Node.js to remain lightweight and performant even under heavy workloads.

Libuv is one of the most crucial components behind Node.js, yet many developers aren't fully aware of its role in enabling asynchronous I/O operations. As a high-performance, cross-platform support library, Libuv is at the heart of event-driven programming in Node.js, but its impact extends far beyond that. Santiago Gimeno is a Libuv maintainer and Senior Software Architect at NodeSource.