Реальный DX: как измерить опыт разработчика и не соврать самому себе
В прошлый раз я писал про то, что сообщение об ошибке читает уставший человек в два часа ночи. Там была одна простая мысль: ошибка должна сказать, что…
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I open-sourced every Binance and OKX 2026 fee tier as JSON (+ a calculator)
If you've ever written a backtest or a fee-aware order router for Binance or OKX, you've hit this wall: the exchanges publish their fee schedules as H…
rdev-go-api-template: Production-ready Go API Scaffolder & CLI Generator
rdev-go-api-template 🚀 The Concept A unified Go development utility that functions simultaneously as a production-ready architectural blueprint and an…
Lesson 1.3 - GraphQL for Screen Complexity and App Changes
Good morning, class! Welcome back. In our last lesson, we explored how GraphQL fundamentally addresses the issues of over-fetching and under-fetching.…
Lesson 1.2 - REST Problems and the First GraphQL Fixes
Good morning, everyone! Welcome back. In our previous lesson, we compared REST and GraphQL at a high, architectural level. Today, we are going one lay…
Sunset Your API Endpoints on Purpose: The Deprecation and Sunset Headers
Killing an API endpoint is easy. Killing it without breaking your consumers is the hard part. Most teams announce a deprecation in a blog post, send o…
How I Tamed AI API Rate Limits with a Simple Queue
A few months back, I was building a content generation tool. The idea was simple: take a list of topics, hit the OpenAI API, and get SEO-optimized art…
Cloud Architect's 2026 Guide to Cheaper, Faster LLM Inference
Cloud Architect's 2026 Guide to Cheaper, Faster LLM Inference Three months ago I opened our quarterly cloud spend dashboard and almost choked on my co…
Why AI agents can't shop today — and what we're building to change that
AI agents are getting smarter every week. They can browse the web, write code, analyze data. But there's a glaring gap in their capabilities: they can…
Building a Resilient Meta Ads Scraper: What Breaks (and What I Learned Fixing It)
When I set out to build a tool for pulling ad data from Meta's platforms, the brief I gave myself was deceptively simple: let someone search for ads b…
How I Cut AI API Costs by 65% — A Freelance Dev's 2026 Guide
How I Cut AI API Costs by 65% — A Freelance Dev's 2026 Guide Three months ago I opened my monthly invoice from a client project and nearly choked on m…
Бесплатно и без СМС: как корпоративные food-карты могут стать идеальной мишенью для социальной инженерии
Во множестве организаций существует такая фича социальной поддержки и удержания сотрудников, как корпоративные предоплаченные карты питания, или «food…
Airtable AI From Scratch: A Freelance Dev's Cost Breakdown
Airtable AI From Scratch: A Freelance Dev's Cost Breakdown I run a one-person shop. No co-founders, no VC money, no "growth team." Just me, my laptop,…
[EN] How to Organize a REST API Tree to Survive Time (and Org Chart Changes)
Also available in Spanish Before designing an endpoint, classify its nature. Only then choose its location. The Silent Problem There are many articles…
**Quick Tip: How to Choose the Right Model for Slack AI Workflows in 2026
Quick Tip: How to Choose the Right Model for Slack AI Workflows in 2026 I've been running Slack-integrated AI workflows in production for about three …
Stop hand-picking an LLM per request: a practical case for auto-routing
Most LLM features ship with the model name hardcoded. You picked it once — usually the strongest one you could justify — and now every request, trivia…
Reduce LLM Token Waste in RAG with Markdown
TL;DR Feeding raw HTML to Large Language Models wastes tokens on markup, scripts, and styling. By rendering dynamic web pages in a headless browser an…
ID, token, UUID и slug: в чём разница и почему их нельзя мешать
В каждом бэкенде рано или поздно рядом появляются id , UUID , slug , token и request_id . Все они выглядят как строки, но отвечают за разные вещи. Ког…
Building an Instagram-powered app without managing scraping infrastructure
When I started building , I needed reliable access to Instagram data. Like many developers, my first instinct was to use a self-hosted solution such a…
A Korean Saju (Four Pillars) API that gets the date math right
If you have ever tried to build a Korean fortune-telling or astrology app, you already know the dirty secret: the fun part is the interpretation, and …
How I built Google Drive sync without a backend (and the 3 bugs that almost broke me)
When I started building PenPage — a privacy-first note app that stores everything in IndexedDB — I made one assumption that cost me three weeks of deb…
JWKS explained: what every developer should know
When it comes to security, certificates are used everywhere since the early days of the web. While storing them in PEM/DER format has always been comp…
Bannx — High-Volume Banner, Ad & PDF Automation for Developers and Designers
If you've ever had to generate hundreds of social media banners, OG images, or PDF certificates programmatically — you know how painful that workflow …
How to Get an FFmpeg API Key in 60 Seconds
Originally published at ffmpeg-micro.com FFmpeg doesn't have an API. It's a command-line tool. If you want to process video from your app, you either …
I Wish I Knew AI Recommendation Sooner — Here's the Full Breakdown
So here's what happened: i Wish I Knew AI Recommendation Sooner — Here's the Full Breakdown Last quarter I burned through about three billable hours d…
REST vs GraphQL vs gRPC — Which One Should You Actually Use?
Every engineering team hits this conversation at some point. Someone proposes GraphQL. Someone else says REST is fine. A third person mentions gRPC an…
Tackling Performance Bottlenecks in Full-Stack Development: A Senior Engineer’s Guide
As a full-stack product engineer, one of the most persistent challenges I face is managing performance bottlenecks that arise between frontend, backen…
How to Track Local SEO Rankings by City with an API
Local SEO rankings are not the same everywhere. Your website may rank in position 2 in Austin, position 8 in Dallas, and not appear at all in Chicago.…
Fixing WebSocket Silent Disconnects for Financial Market Data
Intro If you work with real-time financial tick data via WebSocket long connections, you’ve probably run into frustrating hidden issues: Connections s…
How to Scrape Google Maps for Local Business Leads (with Emails) - No API Key
If you've ever needed a list of local businesses - every dentist in Manchester, every plumber in Leeds - with their contact details , you've probably …