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.…
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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…
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…
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,…
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…
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…
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 …
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…
Timeouts and Circuit Breakers: Stop One Slow API From Taking Down Your Whole App
When you call another service over HTTP, you are inheriting its worst day. If that dependency slows to a crawl, every request you make to it piles up,…
How I Cut My LLM API Costs by 70% Without Touching My Code
I was staring at my AWS bill, and my stomach dropped. $214 for AI API calls last month. That's more than my hosting, my database, my entire infrastruc…
How WSO2 API Manager Transforms API Analytics & Monitoring
How WSO2 API Manager Transforms API Analytics & Monitoring Published on Dev.to — by Chamath H. Gunawardhana The Problem with Flying Blind Imagine …
[Перевод] Немного магии: как устроен API фикстур в Playwright
Playwright использует довольно необычный подход в реализации своего JavaScript API для фикстур. Чтобы понять, как это работает, мне пришлось заглянуть…
Running Chinese LLMs at Scale: A Cloud Architect's Notes
Running Chinese LLMs at Scale: A Cloud Architect's Notes I want to talk about something I've been wrestling with on real production workloads: the fou…
Best HTML to PDF API Tools for Developers in 2026
Key takeaways HTML2PDF.app is built as a browser based HTML to PDF API that focuses on real SaaS workloads, like invoices, receipts, reports, and expo…
Async APIs: The 202 Accepted + Polling Pattern for Long-Running Operations
Some API requests can't finish in time for a single HTTP response. Generating a report, transcoding a video, running a batch import — these take secon…
I Cut RAG Costs 65% With DeepSeek + ChromaDB — Full Data
I Cut RAG Costs 65% With DeepSeek + ChromaDB — Full Data Last quarter my team burned through $14,800 on a single RAG workload. That's not a typo. I st…
The Data Scientist's Guide to AI Summarization in 2026
I gotta say, the Data Scientist's Guide to AI Summarization in 2026 I have spent the better part of three years building summarization pipelines, and …
CRM Enrichment From an Agent-Owned Inbox
The best contact-enrichment vendor you'll ever use is the bottom three lines of the emails already sitting in your inbox. Roughly 82% of business emai…
Monitor a Support Inbox and Open Tickets Automatically
Before: a customer emails "production is down" at 11pm, the message sits unread until someone opens the shared inbox at 8am, gets forwarded to the wro…
How to Build a LinkedIn Profile Scraper: The Honest Technical Guide
If you have ever tried to build a LinkedIn profile scraper , you have probably discovered that the obvious path — "just call the API" — is a dead end.…
Saving 82% on AI: How I Migrated From GPT-4 to Chinese Models
Saving 82% on AI: How I Migrated From GPT-4 to Chinese Models Let me tell you a quick story. About three months ago, I was staring at a Stripe dashboa…
When you just need to inspect a webhook before writing code
Webhooks are usually discussed as something your application should process automatically. A payment provider sends an event. A Git hosting service no…
USPS Just Broke Your Magento Shipping. Here's the Fix.
If your Magento store still depends on the old USPS Web Tools integration, you should assume your shipping rates are either already broken or one chan…
When My AI API Went Down: Building a Resilient Fallback Pipeline
Last month, my side project hit a wall. The AI summarization API I depended on returned a 503 error for three hours. My app – a simple tool that trans…
Webhook Testing: The Complete Guide for 2026
Webhooks are how modern systems talk to each other asynchronously. Stripe sends them. GitHub sends them. Shopify, Slack, Twilio, Postmark, SendGrid, M…
How to Convert JSON to XML Without Breaking Your Integration
Working with modern APIs means living in JSON. But the moment your project touches a legacy enterprise system - a bank, a government service, or a SOA…