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Hello everyone! My name is surely not Yue, but I'm really in love with my pseudonym, so for some time I'll be here under it. not exactly just beginning coding,...

Last year I got tired of watching businesses lose customers because their websites couldn't answer basic questions at 9pm. So I built EmbedAI — an embeddable AI...

When we talk about a model in machine learning, it helps to immediately drop all associations with “artificial intelligence” and complex abstractions. At its co...

Read more about 工业级量化开源软件 QuantConnect/LEAN 功能介绍...

Quark’s Outlines: Python Exceptions Overview, Historical Timeline, Problems & Solutions When you run a Python program, you may hit a problem. You may divide by...

🎬 Welcome to Pipeline Therapy Let me describe your CI/CD pipeline. Stop me when I'm wrong: It takes 42 minutes to build and deploy Nobody knows exactly what it...

How to Automate Screenshots in Your CI/CD Pipeline Every deploy is a visual change. Buttons move. Colors shift. Layouts break. You can't catch all of it manuall...

Your system says the transaction succeeded. Your user says it didn't. A user transfers money. They see: Transaction successful They refresh their balance. Nothi...

We had 66 people start our demo. 12 reached the login screen. 0 signed up. The funnel data told us exactly where people were dropping. But the why was less obvi...

If you are familiar with Wagtail CMS for Django, you know that you can create Wagtail pages and control their content and layout with blocks inside of stream fi...

Como usar git-filter-repo para remover arquivos e segredos do histórico Git Quando um arquivo sensível ou uma chave vaza para o repositório, apagar o arquivo no...

Are you looking for a lightweight and efficient router to build HTTP services in Go? If so, Chi is the answer. In this guide, we will walk through the basics of...

This year, I want to bring my centralized gamified donation platform www.make-impact.org to life at least technically. Earlier I had the version I was developin...

Unlocking Precision: Why Sigmetrix CETOL 6σ v11.5 is a Game-Changer for 3D Tolerance Analysis In the competitive landscape of modern manufacturing, precision is...

API Rate Limiting with Redis: Token Bucket, Sliding Window, and Per-Client Limits Your API has no rate limiting. A single client sends 10,000 requests per secon...

In Part 1 of this series, we introduced RabbitMQ and built our proof-of-concept: the EventBusService, RabbitMQProvider, a DLX retry pattern, and our first emitt...

You fire off a build before heading out. Twenty minutes later, you're in line at a coffee shop, wondering if it passed. You could SSH in, but that's a pain. You...

Error Handling Patterns in TypeScript: Beyond Try-Catch Try-catch blocks scattered everywhere. No idea what errors a function can throw. Callers forget to handl...

Environment Variables Done Right: From .env Files to Production Configs Hardcoded config values are the fastest way to ship broken code to the wrong environment...

Docker Compose for Development: The Setup Every Backend Dev Needs You need PostgreSQL, Redis, and your API running locally. Installing each natively leads to ve...

Database Indexes Explained: B-Trees, Composite Indexes, and When They Hurt Performance You added an index. The query got slower. Here is why, and how to use ind...

We've all done it. You're debugging a production issue at 2am. You have a JWT right now. So you Google That token contains your user's data. Their email. And yo...

15 min read · Beginner-friendly · Real code you can paste into Go Playground You pass your slice to a function. The function changes some values. You print the...

Graceful Shutdown in Node.js: Stop Dropping Requests Your server gets a SIGTERM. It dies immediately. In-flight requests get 502s. Here is how to shut down prop...

Prompts are not static configuration. If you have been running LLM-powered agents on real projects for more than a few months, you already know this. A prompt t...

Originally published in Level Up Coding. You can read the original version here. Recently at IBM Software Labs, I worked on a task that forced me to understand...

Most freelancers I talk to are charging 30-50% below market rate. Not because they are not good enough — but because no one taught them how to price themselves....

The Problem with the 'AI-Wrapper' Era In the last 12 months, we've seen an explosion of AI tools for the creator economy. Most follow a predictable pattern: a t...

Every backend team is getting the same request: 'add AI to it.' Most teams bolt on an OpenAI call in a route handler and call it done. Then they hit streaming,...

DotFetch v1.2.0 — A deep dive into building a professional REST client inside VS Code with Auth, Retry Logic, JSON Highlighting, and a modular ES Modules archit...

When we build apps with Angular, we usually stay inside the world of templates and signals. It works great for almost everything. But sometimes you hit a wall a...

Introducing helping-js v2: A Zero-Dependency Utility Library to Level Up Your App TL;DR — helping-js is a lightweight JavaScript utility library with no depende...

A honest letter from a grandfather who codes — to everyone who thinks they started too late. Most of you reading this were probably still figuring out what 'the...

!Jamie Folsomhttps://media2.dev.to/dynamic/image/width=50,height=50,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2...

If you have been watching the AI coding space lately, you have probably noticed something interesting happening. Developers are starting to question whether the...

Here's the article body markdown: You've shipped your auth. Login works. JWT tokens fly around. Then someone asks: 'Can editors publish but not delete?' and you...

TL;DR Go to MCP Playground → Test MCP Server — free, no sign-up Paste your server URL, add a Bearer token if required, click Connect Browse tools, prompts, and...

As developers, we often deal with timezones and calendars. While the Gregorian calendar is the global standard, many cultures use their own traditional systems....

Everyone's talking about AI coding agents. Most people are still writing CLAUDE.md files that look like this: Use TypeScript. Follow best practices. Be helpful....

I was standing on a crowded subway platform when I pulled out my phone, typed 'take yesterday's meeting notes and turn them into a slide deck,' and put my phone...

Half the tasks I send to Dispatch fail. I'm still using it every day. Here's why — and more importantly, here's everything that goes wrong. In the previous post...

OpenClaw has 200,000 GitHub stars, supports every messaging platform you can name, and costs nothing. Claude Code Channels has three plugins, requires a paid su...

I was on the subway when I pushed a commit to production. Not from a laptop. Not through SSH. I sent a Telegram message from my phone, and Claude Code — running...

Programmatic Accessibility Analysis: Extract Page Structure with /inspect Accessibility audits usually mean manual testing: open DevTools, navigate the page str...

Building Reliable Webhook Delivery: Retries, Signatures, and Failure Handling Your webhook fires. The receiver is down. The event is lost forever. Most webhook...

In today’s world, applications generate a huge amount of data every second—whether it’s user activity, orders, logs, or data from sensors. Handling this data ef...

Environment Variables Done Right: Stop Hardcoding Secrets Your .env file is in git. Your database password is in plain text. Your JWT secret is the same in dev...

We're using QuickNode for Base Sepolia. This post is how to setup our own node. Docker & Docker Compose installed. L1 RPC Endpoint: A synced Ethereum Sepolia no...