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📰 Dev.to · David

33 articles · Updated every 3 hours · View all reads

All Articles 67,615Blog Posts 99,886Tech Tutorials 16,344Research Papers 13,813News 12,550 ⚡ AI Lessons
Cómo construí Worvi: Un chatbot WhatsApp inteligente con Claude API
Dev.to · David 1mo ago
Cómo construí Worvi: Un chatbot WhatsApp inteligente con Claude API
Hace 6 meses comencé a resolver un problema real: pequeños negocios pierden leads porque no pueden...
Why Your Shipping Speed Hasn't Changed Since You Started Using AI
Dev.to · David 🤖 AI Agents & Automation ⚡ AI Lesson 1mo ago
Why Your Shipping Speed Hasn't Changed Since You Started Using AI
I'm going to be honest with you. Most engineers using AI assistants today are shipping at the same...
Does the concept of professionalism apply to the creative industries?
Dev.to · David 1mo ago
Does the concept of professionalism apply to the creative industries?
Introduction Does the concept of professionalism apply to the creative industries? To...
After 6 months, I might have to shut down my API
Dev.to · David 1mo ago
After 6 months, I might have to shut down my API
Someone expressed interest in something I built and launched months back. I figured more people...
After 6 months, I might have to shut down my API
Dev.to · David 1mo ago
After 6 months, I might have to shut down my API
Someone expressed interest in something I built and launched months back. I figured more people...
Learning Fullstack Observability: Metrics
Dev.to · David 1mo ago
Learning Fullstack Observability: Metrics
(Originally published on Medium) Introduction According to RedHat: Observability refers...
Building an AI Agent That Earns Yield on Its Own USDC
Dev.to · David 1mo ago
Building an AI Agent That Earns Yield on Its Own USDC
AI agents are increasingly earning and holding digital assets. Whether it's payment for services,...
How I Added Unit Tests to a Next.js Project Using Vitest (and Why It Matters for Portfolio Projects)
Dev.to · David 1mo ago
How I Added Unit Tests to a Next.js Project Using Vitest (and Why It Matters for Portfolio Projects)
I recently built a SQL and Python interview prep app using Next.js, TypeScript, Supabase, and Vercel,...
Monte Carlo Simulation for Trading Systems (Code Example)
Dev.to · David 2mo ago
Monte Carlo Simulation for Trading Systems (Code Example)
Your backtest shows one path. Monte Carlo shows thousands. Here's how to implement three types of...
Same-Origin Policy and Web Proxies: A Technical Security Analysis
Dev.to · David 2mo ago
Same-Origin Policy and Web Proxies: A Technical Security Analysis
When we built ProxyOrb, we faced a fundamental paradox at every design decision: a web proxy works by...
Joins and Window Functions
Dev.to · David 2mo ago
Joins and Window Functions
In the world of data analytics, SQL is the essential language for extracting insights from relational...
How I finally wrapped my head around unit testing
Dev.to · David 3mo ago
How I finally wrapped my head around unit testing
(Originally posted on Medium) This is the second article in my Expense Tracker series. In my...
Free Developer Tools for Testing: IBAN, IMEI, Credit Cards & More
Dev.to · David 3mo ago
Free Developer Tools for Testing: IBAN, IMEI, Credit Cards & More
Why Developers Need Test Data Generators If you've ever built a payment form, a mobile...
Client-Side Security: Why Our Developer Tools Never Touch Your Data
Dev.to · David 3mo ago
Client-Side Security: Why Our Developer Tools Never Touch Your Data
Why we built all our developer tools to process data entirely in the browser — and how you can verify it yourself.
Why Client-Side Tools Are the Future of Web Development
Dev.to · David 3mo ago
Why Client-Side Tools Are the Future of Web Development
Server-side processing had its era. Here's why the smartest developer tools are moving everything to the browser — and why it matters for privacy, speed, and de
The Complete Guide to JSON Formatting for API Development
Dev.to · David 3mo ago
The Complete Guide to JSON Formatting for API Development
Everything you need to know about JSON formatting, validation, and debugging — from syntax basics to advanced techniques for working with complex API responses.
Why Your Payment Testing Is Broken (And How to Fix It With Random IBANs)
Dev.to · David 3mo ago
Why Your Payment Testing Is Broken (And How to Fix It With Random IBANs)
If you've ever hardcoded DE89370400440532013000 into a test case, we need to talk. The...
How I Generate Realistic Test Data Without Writing a Single Line of Code
Dev.to · David 3mo ago
How I Generate Realistic Test Data Without Writing a Single Line of Code
Every developer has been there: you're building a payment form, testing an API, or writing...
5 Free Developer Tools That Should Be in Every QA Engineers Bookmark Bar
Dev.to · David 3mo ago
5 Free Developer Tools That Should Be in Every QA Engineers Bookmark Bar
Testing is only as good as your test data. And let's be honest — most of us have been there:...
How Analysts Translate Messy Data, DAX, and Dashboards into Action Using Power BI
Dev.to · David 3mo ago
How Analysts Translate Messy Data, DAX, and Dashboards into Action Using Power BI
Introduction In the world of business analytics, Power BI has become the bridge between...