The Most Important AI Agent Design Choice: Don’t Let the Model Be the Final Authority
AI agents are getting very good at doing things . They can search databases, call APIs, modify tickets, draft code, update records, trigger workflow…
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I failed a "design a document editor" interview, so I built one
How I built a drag-and-drop resume editor Roleframe exists because of an interview I failed. After a long job hunt I finally landed a system design…
Payment Succeeded. Did the Transaction?
A payment API returns success . The interface turns green. Everyone relaxes. But what exactly succeeded? The payment rail may have accepted or settl…
A Beginner's Guide to Starting with HTML, CSS, and JavaScript
Everything you need to go from a blank text editor to a working, useful webpage Every website you've ever visited — no matter how complex — is built…
How to Read and Write NFC Tags Directly in the Browser with the Web NFC API
Near Field Communication (NFC) used to require native iOS or Android mobile applications. With the Web NFC API , modern web apps can now read and wr…
MPLS vs SD-WAN in 2026: the decision isn't close anymore, except when it is
For years, "MPLS vs SD-WAN" was a genuine, close debate. In 2026 it mostly isn't, for most companies, and it's worth understanding exactly why, beca…
Cisco enterprise networking without the vendor pitch
Ask about Cisco and you'll get either a sales deck or a shrug, "it's just the enterprise networking company." Both miss the actual engineering reaso…
How I Built a Free Attendance Calculator for KL University Students
Every KL University student knows the panic - semester end approaching, attendance borderline, no idea if you're going to get a hall ticket or not.…
Calling redirect() Inside a Suspense Boundary Doesn't Undo What Already Streamed to the Browser
Streaming is one of the genuinely great things about the App Router, the browser can start receiving and rendering parts of a page before every sing…
Send Pingvera Events to a Help Desk with Webhooks
Send Pingvera Events to a Help Desk with Webhooks A reliable monitoring-to-help-desk integration creates one incident ticket for one confirmed failu…
I built a free, interactive SQL practice tool for data engineering interviews
Most data engineering interview prep resources I found online were static — a list of questions with answers underneath. You read the answer, nod, a…
How I Built a Free, 100% Client-Side Gemini & Veo Video Watermark Remover Using Inverse Alpha Math
If you've generated images with Google Gemini (Imagen 3) or videos with Google Veo 3 , you've probably noticed the visible semi-transparent 4-pointe…
Building 60fps Canvas Particle & Drift Animations in Next.js 15
Interactive visual effects—such as ambient drift particles, soft glow repulsion, and floating background dynamics—can elevate web applications. Howe…
Building a Client-Side Byte to String Decoder with Unicode Support
Hey DEV community! 👋 When debugging network streams, parsing custom file formats, or inspecting database buffers, we often extract data as raw array…
Why Does a 125B AI Model Use Only 6B Parameters at a Time?
Why Does a 125B AI Model Use Only 6B Parameters at a Time? A new AI model launches. You open X and immediately see numbers like: 125B parameters 6B…
Shopify or WooCommerce? How I Chose My First E-Commerce Platform
When I first started thinking about opening an e-commerce store, my first question was simple: Shopify or WooCommerce? At first, Shopify looked like…
Client API Key — Design (Lite) ออกแบบ API key service to service ให้เบาและยังถูกต้อง
ออกแบบ API key สำหรับการเรียกกัน service to service ให้เบาและยังถูกต้อง วันหนึ่งจะมีอีกทีมมาขอเรียก service ของคุณ และคุณต้องรู้ให้ได้ว่าใครเป็นคนยิ…
How to Accelerate Next.js App Router API Routes by 10x
Next.js App Router brought powerful server-side capabilities with React Server Components (RSC) and standard Route Handlers ( app/api/route.ts ). Ho…
$30 to $8,880MRR in Six Months: How a PM Who Can't Code Runs an API Gateway Doing 300K Calls a Month
I'm a product manager. I can't write code — not "I'm rusty," not "I know some Python." I cannot write the code that runs my business. Six months ago…
I Built an API Because My Government’s Website Got the Date Wrong (and Just… Deleted It)
There’s a funny (and slightly sad) story behind why I built mabims.dev . It started with a date. More specifically, a Hijri date . Once Upon a Time,…
My New Portfolio.
𝗚𝗮𝘄𝗮𝗱’𝘀 𝗦𝘁𝗲𝗹𝗹𝗮𝗿 𝗦𝘆𝘀𝘁𝗲𝗺: “𝗔 𝘂𝗻𝗶𝘃𝗲𝗿𝘀𝗲 𝘄𝗵𝗲𝗿𝗲 𝘂𝗻𝗶𝗾𝘂𝗲𝗻𝗲𝘀𝘀 𝗮𝗻𝗱 𝗵𝗮𝗿𝗺𝗼𝗻𝘆 𝗮𝗿𝗲 𝗲𝘃𝗲𝗿𝘆𝘁𝗵𝗶𝗻𝗴.” While working on my portfolio, I realized that a normal static web…
I benchmarked 8 LLMs for a niche production app. The flagship cost 5.8x more - and lost.
My app generates personalized readings for BaZi — Chinese "Four Pillars" birth charts. Every reading is an LLM call, every call costs money, and the…
Why AI Websites All Look the Same and How to Build Something Different
If you've built a website with AI recently, there is a good chance it looks familiar. Maybe you have seen the same oversized hero headline, the same…
I built a complete DJ console in a single HTML file using Web Audio API
Hey dev community! I want to share a project I just launched: MasterDJ AI — a professional DJ platform that runs entirely in the browser. What is it…
3 years into CS and still not sure I "get" it some days
anyone else feel like the more you learn the more you realize how little you actually know? third year of uni now, been grinding Java/Spring Boot st…
LuaDB – A pure Lua RDBMS engine with B+Trees, WAL, and Postgres wire protocol
I built LuaDB – an embeddable relational database written 100% from scratch in pure Lua (no C extensions or external dependencies). Key features: Sl…
Architectural Breakdown: Building Next-Gen Agentic Architectures: From Local RAG to Sandboxed Execut
Building Next-Gen Agentic Architectures: From Local RAG to Sandboxed Execution and BigQuery MCP The 3 AM production fire revealed a harsh truth: mod…
How a WhatsApp Web Extension Interacts With the Chat Interface
When people see a browser extension add translation controls, a side panel, or a sending workflow to WhatsApp Web, a common question is: how does th…
Idempotency for Reliable APIs
Why idempotency matters When you build an API, retries are inevitable. Clients lose connections, timeouts happen, and users double-click buttons. Wi…
Angle Conversions in Frontend Code: A QA Checklist for the Bugs You Don't See
You ship a pie chart that looks fine in the browser. The slices line up, the labels sit where you expect, and the customer demo passes. Two weeks la…