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VYVivek Yadavvivek-blogs.hashnode.dev1d ago · 5 min read

Node.js

How was Node.js developed? Node.js was created by Ryan Dahl in 2009 to allow JavaScript to run outside the browser. JavaScript is a programming language that provides core features such as variables,

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JAJimmy A. Magbanualapistry.hashnode.dev4d ago · 7 min read

How I built a billing system with a real double-entry ledger in Node + PostgreSQL

Most billing code has the same bug hiding in it: it stores the account balance as a number and mutates it — balance += amount. It works fine, right up until a payment gets entered twice, or you have t

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SASharafath Alisharafath.hashnode.devJun 8 · 9 min read

My Node.js Server Was Leaking Memory in Production. Here's How I Found It.

Our Node.js server was crashing in production. Not once — every single instance was going down, one after another, and Sentry (logging) was flooding with alerts. We had auto-scaling configured with a

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Aartakulovartakulov.hashnode.devMay 11 · 2 min read

What I learned processing 50+ federal data sources with Node.js

I've been working on a project that pulls environmental data from federal agencies — EPA, FEMA, USGS, CDC, Census, and about 45 others. Some things I ran into that might save you time: Federal APIs are wild No two agencies use the same format. EPA gi...

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KRkumar Rishabhkumar-rishabh.hashnode.devMay 10 · 3 min read

What is Node.js? JavaScript on the Server Explained

For a long time, JavaScript only lived inside browsers. People used it for: button clicks animations form validation Basically, frontend stuff. But today JavaScript also runs on servers, APIs, da

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ACARKPARAVA CHAKRABORTYunderstand-and-build-in-web.hashnode.devMay 10 · 3 min read

The heartbeat of Node.js: The Event Loop Explained

If you’ve ever wondered how Node.js manages to be incredibly fast despite being "single-threaded," you’ve stumbled upon the engine's greatest secret: The Event Loop. Most traditional servers handle mu

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SAShahbaz Ahmedknowingnodejsexpress.hashnode.devMay 10 · 5 min read

Handling File Uploads in Express with Multer

File uploads are one of the most common features in modern web applications. Whether users are uploading profile pictures, resumes, documents, videos, or product images, the backend needs a reliable w

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AWAlan Westalan-west.hashnode.devMay 10 · 5 min read

Debugging the 0.2%: When Node.js Code Fails on Alternative Runtimes

You ever migrate a Node.js service to an alternative JavaScript runtime, watch most of your tests pass, then spend an entire afternoon hunting down the handful that fail? I have. Three times this year. Here's the thing about runtime compatibility num...

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KSKanishka Shashinodej.hashnode.devMay 10 · 10 min read

Blocking vs Non-Blocking Code in Node.js

Modern web applications are expected to handle multiple users, process requests quickly, and remain responsive even under heavy traffic. One of the core reasons Node.js became so popular is its abilit

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KSKanishka Shashinodej.hashnode.devMay 10 · 9 min read

Why Node.js is Perfect for Building Fast Web Applications

Modern web applications demand speed, scalability, and real-time performance. Users expect websites and applications to load instantly, process requests quickly, and handle thousands of simultaneous u

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#node

Explore Hashnode

Trending tags this week

Node.js

How I built a billing system with a real double-entry ledger in Node + PostgreSQL

My Node.js Server Was Leaking Memory in Production. Here's How I Found It.

What I learned processing 50+ federal data sources with Node.js

What is Node.js? JavaScript on the Server Explained

The heartbeat of Node.js: The Event Loop Explained

Handling File Uploads in Express with Multer

Debugging the 0.2%: When Node.js Code Fails on Alternative Runtimes

Blocking vs Non-Blocking Code in Node.js

Why Node.js is Perfect for Building Fast Web Applications