49 cloud and AI deadlines before the end of 2026 (with what to do for each)
My day job is partly finops and vendor management. The thing I hate most: a vendor retires a model, a runtime or a plan, the notice goes to some bil…
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Linkguard: catch dead links and swap in archived copies
Every blog rots a little. The post you wrote two years ago still reads fine, but a third of its outbound links now land on a 404, a parked domain, o…
Networking Machinery for Software Engineers
After 10 years of working as a software engineer in web development, I joined a company in the energy industry. To be precise, in solutions for the…
A union of 52 route strings we never wrote, and three of our seven layouts all claim the same one
There is a file in Nakodo that nobody on the project has ever edited, that is not in git, and that 36 source files depend on at compile time. It is…
Our data export contains the log of our data exports, so each copy is one row longer than the last
Two of the GDPR rights our users have are buttons in the app. Export your data, and delete your session history. Both of them write a row to this ta…
The real cost of hosting a side project in 2026 (free tiers, ranked)
Disclosure: StackTested is funded by affiliate links. Some links in this post will become tracked affiliate links once our program applications are…
One AI Model for Everything? A Practical Guide to Task-Based Model Routing
One AI Model for Everything? A Practical Guide to Task-Based Model Routing When teams first add AI to an application, the architecture is usually si…
OpenAI Faster Fourier Transform: What It Means for Developers
CATEGORY: Web Dev A look at the math that OpenAI claims computes faster Fourier transforms raises a practical question: does a better mathematical b…
I Open-Sourced 15+ Core Financial & Math Algorithms in Vanilla JavaScript (Amortization, SIP, Compound Interest)
Most calculator websites on the internet today suffer from two glaring problems: They are bloated with heavy third-party tracker scripts and sluggis…
A school discount with no code, because the discount is the email domain
We used to give schools a discount code. A teacher asked for one, we minted it, and then we maintained the parts that follow from a code existing: a…
Pricing page vs terms: six mismatches I keep finding on launch day
Originally published on shipclarity.app . For the last month I've been reading the pricing pages of freshly launched products the way a person about…
# The MERN Auth Flow: How JWT actually works (Without the headache)
Authentication is the most confusing part of learning the MERN stack. When I started building full-stack apps, I struggled to understand what actual…
What's happening to CSS-Tricks, State of Devs 2026, announcing State of HTML 2026, and more | Front End News #116
NOTE: This is issue #116 of my newsletter, which was published on Monday, October 5. You might find this information valuable and exciting, and you…
Supabase RLS breaking change (Oct 30, 2026): 5-minute check to avoid 42501 errors
Oct 30, 2026, Supabase is enforcing a breaking change for RLS grants in the public schema. Existing tables are unaffected; new tables created after…
How I Lay Out Drywall Sheets Wall by Wall in the Browser
Most drywall calculators work out the total wall area, divide it by 32, and call that the sheet count. It's a quick method, but it doesn't match how…
React Authentication Systems: Secure Login, Sessions, and Protected Routes
Authentication is one of the most important parts of a modern React application. Whether you are building a dashboard, an e-commerce platform, or a…
Raw HTML vs Rendered: A Quick Check of What Crawlers Actually Read on Your Homepage
Owners often ask why a search engine or an AI assistant describes their business strangely, or not at all. One common, boring cause: the words on th…
Setting Up ElevenLabs API: From Zero to Production
Why ElevenLabs is a Game‑Changer for Voice AI If you’ve been dabbling in text‑to‑speech (TTS) or voice cloning, you know the pain points: low‑qualit…
Claude Code Added GZIP in 2026. Why Not Brotli?
A developer captured a Claude Code API request that was 594,750 bytes . After GZIP compression, the body was 289,145 bytes . That's about 51% less d…
Phone Number Parsing 101: What Area Codes Like 785 Actually Tell You
If you've ever built a signup form, you know phone numbers are deceptively tricky. Users type them a dozen different ways, and your validator has to…
Why we treat chat as a product, not a channel
Most creators who sell a paid community run it on rented tools. The payment goes through Stripe or Gumroad, the conversation happens in WhatsApp or…
Installed, but nothing shows": building an install check for a third-party widget
Any product that ships a <script> tag for customers to paste into their site gets the same support ticket: "I installed it, but nothing shows.…
PostgreSQL Constraint Naming Convention: Which Pattern to Use, and How to Find the Names That Drifted
Disclosure: I build Schemity , a desktop ERD tool - this post is from our blog and uses it for the examples. TL;DR: Use the pattern PostgreSQL alrea…
The Overlooked Reason Your RAG Pipeline Keeps Returning Garbage
I spend a lot of time in the AI space -- reading papers, building things, talking to engineers who are actually shipping. And there is a gap between…
The Exact Stack I Use to Build Production AI Agents (No Fluff)
I spend a lot of time in the AI space -- reading papers, building things, talking to engineers who are actually shipping. And there is a gap between…
Do AI coding agents search the web in your language? I tested Claude Code and Codex in 5 languages
When you ask an AI agent something in Korean or Spanish, does it search in that language? I ran 320 web-search sessions with Claude Code (Opus 5.5)…
Building Dashboards with React: A Practical Guide to Reusable Components and Data Visualization
Dashboards are often the first place users go when they want to understand what is happening in an application. Whether you are building an analytic…
I Turned Shopify Objections Into Video Briefs With a Tiny YAML Schema
I was trying to make a short product video for a Shopify store whose customers kept asking one question: Will this actually work for my use case? My…
A screenshot that fails on its own: pin the data, not the pixel
A “flaky” visual test is almost never the pixel comparator. It is the page changing by itself between two captures — and the diff, correctly, points…
Email Verification Logs Need a Privacy Contract
Email verification is usually discussed as a delivery problem: did the message arrive, did the link work, and did the user finish signup? In product…