Ledger Room: I built a local invoice sorter, then measured exactly what the privacy costs
This is a submission for the Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle What I Built Ledger turns a folder of invoices and receipts…
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Node.js API Routes and Server Actions: 3 Error Tracking Boundaries (With Attribution)
Instrument three server-side boundaries, but define the cost-attribution record before choosing the error backend. For a customer-support pricing ru…
Claude Opus 5 Built a Full-Stack App From One Prompt: 64/64 Tests and 3 Invented Package Versions
Instead of reading benchmark charts, I gave Claude Opus 5 an empty folder and one prompt: build a full-stack app. I didn't write any of the applicat…
Next.js 15 Support Ends Oct 21: The Upgrade Changes Your Build Won't Catch
TL;DR: Next.js 15 leaves its support window on 21 October 2026. Run the upgrade codemod and the separate next-async-request-api codemod, then test t…
Multi-tenant SaaS with branch-level RBAC in Next.js + Node: a practical architecture
Tenant scoping that fails closed, permissions that know about branches, and the tests that keep both honest. Key takeaways Resolve the tenant from t…
A headless CMS that only gives you an API is only half a product
This is how most headless CMS projects go for me. I pick a tool, set up my content models, and get an API. Nice. Then I sit down to build the actual…
Architecting Programmatic SEO with Next.js 16: Scaling 500+ High-Performance Routes
Programmatic SEO sounds simple in theory: take a structured dataset, map it to a parameterized URL template, and generate hundreds of targeted landi…
How a 24MB Sitemap Crashed Our Vercel Build
Everything was green in CI. Unit tests passed, lint passed, TypeScript compiled cleanly. Then we pushed to production, and 2 minutes into the Vercel…
If AI Can Build Your Charts, Why Learn Recharts?
You can ask an AI coding tool to build a Recharts component for you, give it some sample data and a prompt, and you'll get something that looks like…
How We Built a Sub-500ms Real-Time AI Voice Agent with TypeScript, Twilio & WebSockets
How We Built a Sub-500ms Real-Time AI Voice Agent with TypeScript, Twilio & WebSockets When building conversational AI phone agents for real-wor…
I launched a free GDPR-compliant toolkit for European users in 48 hours — here's the full technical breakdown
What I Built OmniWebTool (omniwebtool.com) — a free, privacy-focused digital tools platform built specifically for European users. 30+ tools running…
Local news without a location prompt: how we pick a reader's edition in Next.js
A news site with editions for different countries has to answer one question on every request: which edition should this reader see? The easy answer…
I Built a Marketplace for Developers to Buy Ready-to-Use Source Code
I Built a Marketplace for Developers to Buy Ready-to-Use Source Code I've been building full-stack projects for the past few years, and I kept runni…
Why I built a zero-backend developer utility suite using Next.js and Web Workers
Most online utility sites have a major flaw: they secretly upload your clipboard data, cURL requests, and JWTs to backend server logs just to format…
Your Next.js App Feels Slow, but Lighthouse Says It’s Fast. Why?
You run Lighthouse. Performance: 95. Everything looks great. Then you actually use the application. You click a button. Wait. Open a dashboard. Wait…
Building a Photo-Based Card Grader: Computer Vision Where the LLM Doesn't Pick the Score
Trading-card grading looks like an image-classification problem until you try to build it. A grade is driven by several physical properties at once:…
Tenant Incident Reconstruction with Next.js Server Action API Route Logging
The decisive trade-off is fidelity versus exposure: log enough stable context to reconstruct which tenant cohort saw which experiment behavior, but…
Next.js Feature Flag Admin Page: Backend Toggle Checks for Checkout Triage
The page says checkout failures are rising. The on-call engineer sees grouped errors, but the admin screen still shows the checkout flag as enabled.…
OmniJudge Post-Mortem: 1-ULP Drift, Prisma Traps, and Alpine musl
Evaluating hackathons at scale is deceptively difficult. When 40 software projects are evaluated across 4 specialized tracks by 30 volunteer judges…
MemoryDesk: Building an AI Customer Support Agent with Presistent Memory
MemoryDesk: Building an AI Customer Support Agent with Persistent Memory The Problem AI customer-support agents are useful, but a common limitation…
Building a Game Price Tracker: Handling Massive Data Complexity with Next.js & PostgreSQL
When I started building Rynko.it—a video game price tracker built to take on the giants in the niche—I thought the hardest part would be building th…
Building LastWave-Native: How Kotlin, Liquid Glass UI, and Real-Time Sync Are Reshaping Android Music Apps
Originally published on tamiz.pro . Introduction Android music apps have evolved far beyond simple playback — today’s users expect seamless syncing,…
Architectural Breakdown: I Pulled Nine Years of My Own Dev.to Data. The Numbers Were Not What I Expe
![ Architecture Diagram ]( https://image.pollinations.ai/prompt/high+performance+cloud+systems+I+Pulled+Nine+Years+of+My+Own++round+2?width=800&…
What shipping Sanity projects taught us about content models that survive redesigns
Across our Sanity projects, the most reusable technical decision was not a clever GROQ query. It was defining the content before defining the pages.…
How I Achieved Sub-Second FCP on a Shopify Store using Headless Next.js ⚡
If you've spent any time working with monolithic Shopify Liquid themes, you know the struggle. A client comes to you with a store that takes 10+ sec…
Building PayoutDelta: An Open Cross-Border Banking Dataset & 100/100 Lighthouse Next.js Engine
When invoicing foreign clients via SWIFT wire, international software engineers and remote agencies frequently lose 3.5% to 8.2% of gross revenue to…
I got tired of building the same backend twice, so I built a tool that generates it for me
Every time I shipped a product that needed both a mobile app and a web app, I ended up doing the same thing: build the backend, build the Flutter ap…
GoVueKit vs supastarter vs SaaS Pegasus vs ShipFast: an architecture comparison
People searching for "ShipFast alternative" or "supastarter vs" are rarely asking which kit has more checkboxes. They are asking which architecture…
I Turned DEV.to Into a Walkable 3D Library — Debugging It Has Been a Nightmare
DEV Library is my idea of first-person 3D reimagining of DEV.to. Not a themed scene with some article cards floating around, but the actual live cat…
Asynchronous Jobs made easy with Inngest | Learn how to setup Inngest in a Typescript Project
Inngest with Next.js and TypeScript: A Practical Guide to Background Jobs, Workflows, Retries, and Debugging If you've ever written a Next.js API ro…