qm multiplayer AI agent tutorial: Cut Latency 20% with Node.js
This article was originally published on BuildZn . Everyone talks about multi-agent systems but few show you how to actually coordinate them without a…
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I Chased uWebSockets—and Found a 14-Byte Performance Cliff
Building ramjet-ws-js: a Rust-backed WebSocket path for Node.js that wins where it matters, admits where it loses, and survived 584 million verified r…
🚀 Building an AI Automation System for MyZubster
🚀 Building an AI Automation System for MyZubster Introduction MyZubster is an open-source ecosystem for plant mapping, privacy-first payments with Mon…
How to pick object storage for browser direct uploads with presigned URLs in Node.js
If you just want the recommendation: have your Node.js API mint a short-lived presigned URL, let the browser send the file straight into a private buc…
I Built a Blood Donation Management System with the MERN Stack
Every year, thousands of people struggle to find blood donors during emergencies. I wanted to build something that could simplify that process while i…
Multithreading in Node.js: A Complete Guide with Theory and Practical Examples
When developers first learn Node.js, they often hear the phrase: "Node.js is single-threaded." While this statement is technically true, it is also in…
[Dev Log][Node.js] Feedly Classic is gone, so I built my own FeedFlow (Part 1)
Introduction: Since Feedly's redesign, I haven't been able to get used to the interface. I especially miss the high-density, single-column, no-nonsens…
Picking a text-to-image API for a SaaS app: REST, pricing, and safety
If you just want the recommendation: call a plain REST image generation endpoint from your Node.js backend, keep the prompt-in / image-out path as dum…
How I Built a CLI That Generates 12 Project Templates in 30 Seconds
How I Built a CLI That Generates 12 Project Templates in 30 Seconds When I started building ScaffoldX , I had a simple goal: create a CLI tool that ge…
Alibaba's Open-Code-Review: A Game Changer for Code Quality?
I saw this release from Alibaba on GitHub: alibaba/open-code-review . As someone who's spent years wrangling code quality in large Web2 systems and no…
NestJS v12.0 vs. Ditsmod v3.0: A Deep Dive into Node.js Framework Architectures (Part 1)
If you are building enterprise-grade Node.js applications with TypeScript, chances are you are already deeply familiar with NestJS . It has become the…
🚀 Backend Internals #6: The Node.js Event Loop Explained — Why Async Code Doesn't Block
By Krati Joshi If you've ever wondered how Node.js can handle thousands of requests while running on a single JavaScript thread , the answer is the Ev…
Elixir vs Node.js: Why Developers Are Exploring Elixir for Modern Backend Systems
Modern backend development has been dominated by JavaScript runtimes like Node.js for many years. Node.js changed the way developers build web applica…
🔄 The JavaScript Event Loop: From "What?" to "Oh, NOW I Get It!" (A Deep Dive)
The most misunderstood part of JavaScript — finally explained with analogies, diagrams, and zero hand-waving. If you've ever wondered why setTimeout(f…
Node.js 26.5.0: What's New for Web Streams and Error Handling
I saw the Node.js 26.5.0 release announcement the other day, and as someone who's spent years wrestling with I/O and data processing, a few things imm…
ML Without Magic: Building a Tiny Language Model in Pure Node.js and Watching Every Weight Change
Tokenization → embeddings → causal Transformer → LM head → softmax → loss → backpropagation. No TensorFlow, no PyTorch, and no hidden autograd. Reposi…
How I Built a Free AI Prompt Library With Node.js and PostgreSQL — From Zero to Live in 30 Days
If you have been following my Dev.to articles, you know I built Chatzyo — a real-time video chat platform using WebRTC. That project taught me a lot a…
From JavaScript to Node.js: Understanding What Really Happens Behind the Scenes (Part 4.1)
Node.js Modules Explained from Scratch — Why Do Modules Even Exist? If you've been writing Node.js for even a few days, you've probably seen code like…
From JavaScript to Node.js: Understanding What Really Happens Behind the Scenes (Part 3)
From JavaScript to Node.js: Understanding What Really Happens Behind the Scenes (Part 3) Synchronous vs Asynchronous Node.js: What Really Happens Insi…
Structured Logging for Node.js
In Monitoring a SaaS in Production we wired up metrics and alerts so the team knows something is wrong within minutes of it happening. Metrics tell yo…
Feature Flags and Safe Rollouts
In Audit Logs You Can Trust , we built a system that answers "who changed what, and when." Feature flags answer a related question: "who gets to see t…
Caching Strategies for a SaaS
In Disaster Recovery and Backups , we made peace with the database disappearing entirely: accept it can happen, and make recovery boring and rehearsed…
A Production Security Checklist
We spent the last article making the app fast. This one is about making sure it's still standing when someone tries to break it. That's the uncomforta…
s3fifo 1.0: Zero-Allocation S3-FIFO Cache for Node.js is Ready for Production
Disclaimer: As a non-native English speaker, I used AI to help structure and polish this article. A few dayss ago, I shared Implementing a Zero-Alloca…
Unhandled Promise Rejections in Node.js: Why They Silently Kill Jobs
A background worker sits quietly for weeks, chewing through a job queue without incident, and then one Tuesday afternoon it disappears mid-batch, taki…
Request validation with Zod in Express
Express does not validate request input for you. Without a check at the edge, handlers get raw req.body , req.query , and req.params - strings where y…
I turned my phone into a remote deck for my Windows laptop — no cloud, no accounts, one npm start
It started with the dumbest problem in computing: I'm in bed, a movie is playing on my laptop across the room, and pausing it requires physically gett…
Hunting the Bottleneck: Why I Killed findOneAndUpdate in Vlox
The Case: A Database Time Bomb 💣 I was refactoring the backend core of my app, Vlox . I stopped at the high-frequency endpoints: Likes and Reports. I …
Advanced JS Execution: Promises, Workers, and Comlink
You wrap a slow loop in an async function. You sprinkle in await . You tell yourself the page will stay smooth because the work is "async now." Then y…
Building a Production AI Pipeline for a UK FinTech Client at Tittri — What Actually Happened
After five years of shipping features at Tittri, the team gave me a piece of feedback that stung a little: I was good, but I only ever built what I wa…