Web

I Committed 518,000 Lines in 30 Days. Production Kept 235,000.

Originally published on my blog — read it there with the full context, code and updates . Last week I did something I almost never bother to do: I c…

ESP32 Web Serial API: Live Sensor Data in Next.js

What we built An ESP32 plugged into a PC over USB, with a web app (Next.js) connecting directly to the serial port through the Web Serial API and sh…

One Password Shut Down a US Fuel Pipeline

In May 2021, Americans were filling plastic bags with gasoline. Panic buying. Lines wrapped around the block. A regional state of emergency declared…

HELLO FRIENDS

I build crypto signal engines. My flagship system, USS (Unified Signal Scanner), combines momentum, multi-timeframe trend analysis, Smart Money Conc…

Designing a Distributed Cache Inspired by The Lord of the Rings: One Insight to Rule Them All

The Quest Begins (The "Why") Ever felt like your application is constantly begging the database for the same piece of data over and over? I remember…

Exponential backoff with jitter: 64 of 100 LLM calls still failed

Originally published at tensorust.com . TL;DR: I fired 100 LLM calls at once into a rate limiter that refills 10 requests a second, using the defaul…

You Cannot Unit Test a Summary. You Can Still Test It.

Every developer I know has the same reflex when a feature is done: write a test that feeds it an input and asserts the output. That reflex is correc…

The Pitfalls of Automated Character Encoding Detection in Cross-System CSV Pipelines and Handling Malformed Byte Sequences

The Pitfalls of Automated Character Encoding Detection in Cross-System CSV Pipelines and Handling Malformed Byte Sequences 1. Architectural Overview…

Part 3 — Networking: From `fetch()` to Packets

Most web developers use HTTP every day. We write fetch() , call APIs, send requests, and handle responses. But lets understand what happens undernea…

Everything You Need to Know About Generated Infrastructure and Drift

Generated infrastructure is configuration that a tool writes from a higher-level description: a Dockerfile from a service definition, a routing file…

Spoofing WiFi MAC Addresses with a Windows Kernel Driver

1. What a MAC address is A MAC address is six bytes. Convention writes them as hex pairs separated by colons: A4:5E:60:C3:1B:07 The first three byte…

Écrire un article sur les Web Workers en JavaScript

Debouncing vs. Throttling in JavaScript: How to Choose JavaScript interfaces often receive events faster than they need to perform useful work. A se…

Rocket: The Rust Web Framework Built Around Ergonomics

Most Rust web frameworks ask you to compose routing and middleware explicitly. Rocket asks you to describe what a route expects, and then gets out o…

Why Client Feedback Loops Are Broken (And How We Built a Zero-Login DOM Overlay to Fix Them)

If you’ve ever built a website for a client, you know the exact pain cycle: You spend two weeks building a pristine frontend in Webflow, Framer, or…

RevanScript (RVS) Programming Language (RVS-Lang)

Introducing RevanScript (RVS) — My Own Programming Language Written in C Hello, developers! My name is Revan Babayev, and I am the creator and prima…

Your TypeScript Is Lying to You, and These 5 Places Hide Real Bugs

TypeScript's most dangerous keyword is two letters long. as does not convert anything. It does not check anything. It tells the compiler "trust me",…

One Command, 18 Generated Files: Inside TDK CLI's Local Stack

I ran TDK CLI on a scratch project to count what it generates. The answer is 18 files per frontend service , not 17. I checked the count on the CLI…

Algorithmic Sound Design with L-Systems and Granular Synthesis

NLP with .NET

NLP with .NET A deep-dive walkthrough of Natural Language Processing for .NET developers — covering text classification, sentiment analysis, named e…

How to fix "port already in use" on a Mac (and stop it happening)

You run npm run dev and get this: Error: listen EADDRINUSE: address already in use :::3000 Something is already listening on port 3000. Usually it's…

Why Most Business Calculators Lie to You: The Mathematics of Integer Bounds and Capacity Value

By Engineering Team, JC TechLabs Published for DEV Community, Hashnode & Technical Publications Canonical URL: https://jctechlabs.com/tools/ Sou…

Why I Chose Computer Science and What I Hope to Build

Hi everyone! I'm a first-year Bachelor of Science in Computer Science (BSCS) student. I'm still a beginner in programming, but I'm excited to learn…

Every regex is written once and read a hundred times. Optimize for the readers.

Somewhere in a codebase you own there's a regex that three people can write and nobody can read. Mine was a date-validation pattern — forty-some cha…

The build went green because it stopped checking

A teammate deleted a test file on a Friday. Not on purpose. The suite still passed. The pipeline still went green. Nobody noticed for three weeks. H…

Architecting for Zero-Data Privacy: How I Implemented Android's Local-Only SQLite Architecture in Muffle

The Silent Crisis I was sitting in the front row of a Friday Jumu'ah prayer. The imam had just begun the khutbah, the room was perfectly still, and…

Level Up Your FAANG Interview: A 3‑Month Training Montage Inspired by Rocky

The Quest Begins (The “Why”) I still remember the first time I opened LeetCode and felt like I’d stepped into the Upside Down from Stranger Things —…

Proactive by Construction: Why the Next Generation of Agents Must Anticipate, Not Just React

Executive Summary: Current AI assistants are mostly reactive : they wait for a user’s message, run the model, and answer. This works for simple quer…

How I finally understood the Single Responsibility Principle

The Intro Welcome to the first stop of a five-part road trip through SOLID . Five letters, five principles, five posts, one tiny project per post th…

How Streaming TTS Works Under the Hood

What “Streaming” Means for TTS When you ask a voice assistant to read a paragraph, you expect the audio to start playing almost instantly, not after…

Salesforce's New Agentforce Portfolio: Should You Build or Configure Your First AI App?

On September 14, Salesforce announced a new Agentforce portfolio organized around jobs such as customer service, employee support, shopping, and bac…