Building a Pinterest Clone Solo, From Scratch, in Node.js
A few days ago I launched Vizural — "Discover visual ideas you love." It's a Pinterest-style visual discovery platform for things like home & inte…
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Telechat: self-host Claude AI across Telegram/WhatsApp/Slack with one npm install
Built something the r/selfhosted crowd might appreciate: Telechat — a self-hosted Claude AI bot that connects to Telegram, WhatsApp, Slack, and web ch…
How to store AI-generated images per user in object storage and delete the old ones
Use one key prefix per user, delete from the application every key you can name, and leave lifecycle rules to sweep the old temporary images nobody wi…
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…
The Most Useful Support Agent Is the One That Cannot Send
An AI support demo can look complete after one successful exchange: a message arrives, the model chooses a tool, and a polished answer appears. The un…
🔄 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…
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…
The Bug Only Happened After I Switched LLM Providers
The request succeeded. The response was valid JSON. The SDK did not throw an exception. And the application still broke. The bug appeared after I swit…
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…
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…
How to Use Bun 1.3.14's Built‑in Image API
I was scrolling through the Bun blog this morning and saw the announcement for Bun v1.3.14 . For a developer who spends a lot of time juggling Node, D…
I built a self-hosted one-time secrets service in Node — here's the threat model
I built a self-hosted one-time secrets service in Node — here's the threat model Sharing an API key in Slack feels wrong. Password managers work great…
Goodhart's Law in Benchmarking: When the Metric Becomes the Target
A benchmark score going up is not evidence that the thing it measures got better. In 2015, regulators found that roughly 11 million diesel cars were r…
Building a Scalable MERN Skill Exchange Platform: Lessons from Full-Stack Development
Modern web applications need to be scalable, secure, and maintainable. While building a Skill Exchange Platform, my goal was to create a system where …
The AWS Lambda Node.js 20 deadline everyone gets wrong (it's not September 2026)
If you searched "nodejs20.x Lambda deadline" recently, you probably read that AWS blocks new function creation on Aug 31, 2026 and updates on Sep 30, …
Building a Modern Chess Platform with Vue.js, Node.js and React Native
🚀 Building a Modern Chess Platform with Vue.js, Node.js and React Native How a passion for chess turned into building a modern chess platform from the…
cordless v0.6: Going CLI-First — Run It, Scan the QR, You're Paired
TL;DR — cordless manages your remote terminal / coding-agent (Claude Code, Codex) sessions and puts them on your phone. v0.6 makes it CLI-first : run …
React Approval Emails Without Effect Loops
Approval flows look simple in product meetings, then get weird fast in code. A reviewer clicks Approve, the UI updates, a follow-up email should go ou…
fluent-ffmpeg vs FFmpeg Micro: Why Node.js Developers Switch to a Cloud API
Originally published at ffmpeg-micro.com fluent-ffmpeg is the go-to FFmpeg wrapper for Node.js developers. It works perfectly on your laptop. Then you…
How to Test Twilio Webhooks Locally
The Problem: Twilio Webhooks Won't Hit Your Localhost When you're building a Twilio integration—whether handling incoming SMS, voice callbacks, or cal…
The project file is the interface: letting AI agents drive a video editor
Last week I open sourced FableCut , a Premiere-style video editor that runs in the browser and that AI agents can operate. It hit the front page of Ha…
10 Useless NPM Packages You Didn't Know You Needed
We have all been there. You are staring at your screen late at night, trying to optimize a bundle size, or debugging an enterprise pipeline that has b…
Node.js Internals Explained by Uncle to Nephew — Part 1: Why Node Exists, Modules, and the JS You Never Knew
This is Part 1 of a 3-part series where an uncle (30 years in backend systems, still uses a wired mouse) explains Node.js internals to his nephew (2nd…
One agent, many skills: structuring a production AI assistant
We didn't give our AI agent one big brain. We gave it skills. We built a conversational AI inside an enterprise SaaS platform, where users get work do…
I Built a Zero-Dependency Env Validator with Full TypeScript Inference - Here's Why
Every Node.js project I've ever worked on has the same invisible vulnerability. Somewhere in the codebase, there's a line like this: const db = new Cl…
Idempotent Signup Emails in Node.js APIs
Signup email bugs are rarely caused by SMTP alone. In most backend systems, the real problem is that account creation, retries, and background jobs do…
How to Test Slack Webhooks Locally
The Challenge of Testing Slack Webhooks Locally Testing Slack webhooks locally is deceptively tricky. Slack needs to reach your handler over the inter…
Building Vidiflow: A Production-Grade Video Downloader Backend in TypeScript
I Built a Production-Ready Video Downloader Backend in TypeScript — Here's What I Learned I just completed V2 of Vidiflow , a production-ready backend…
Node.js Email Verification Tests with PostgreSQL
Email verification looks easy until you try to prove it works repeatably in CI. The happy path is obvious: create user, send email, click link, mark a…