How I Built a Flat-Rate Reverse Geocoding API for Japan to Escape Google Maps Bill Shock
If you've ever built a global app or travel tool operating in Japan, you know the struggle: Google Maps Geocoding API pricing : At $5.00 per 1,000 req…
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AWS Lambda and NestJS: Communication between services
Originally published on Medium on November 11, 2023. In this guide, we’ll speak about communication in a distributed system using AWS Lambda and NestJ…
Serverless: When It Helps and When It Hurts
Introduction Serverless computing has become a buzzword in cloud architecture. But like any tool, it has sweet spots and sharp edges. After building a…
Stone.js: your app exists in every runtime, until you run it
The rewrite tax Count the versions of your last real-world app. There is the Express or Nest version for the server. The handler you extracted and man…
Everyone Knows Trump's Tweets Move Markets. I Measured It: the Connection Is Real — the Direction Isn't.
#NebiusServerlessChallenge Live dashboard: Myth-Busting Quantitative Terminal · Live endpoint: /predict on Nebius Serverless · Code: github.com/KoralZ…
"Why I Build Serverless, Client-Side Utilities: The Architecture of QuickQR and ARTRES"
In a development culture obsessed with heavy frameworks and complex backend infrastructure, there is massive, untapped power in pure client-side execu…
The AWS Lambda Node.js 20 deadline everyone gets wrong (it's not September 2026)
If you searched "nodejs20.x Lambda deadline" recently, you probably read that AWS blocks new function creation on Aug 31, 2026 and updates on Sep 30, …
GitOps for Geospatial Data: Building a Self-Healing, Zero-Cost Data Pipeline with GitHub Actions
Most data engineering and geospatial projects follow a predictable infrastructure blueprint: an ingestion cron job, an enterprise database (like PostG…
fluent-ffmpeg vs FFmpeg Micro: Why Node.js Developers Switch to a Cloud API
Originally published at ffmpeg-micro.com fluent-ffmpeg is the go-to FFmpeg wrapper for Node.js developers. It works perfectly on your laptop. Then you…
Why I Chose Neon (dev.to Database Partner) for My AI Routing Platform
When Neon became the official database partner of DEV Community, I was already a user. But the partnership made me look closer at why I chose Neon — a…
Azure Logic Apps vs Function Apps: Choosing the Right Tool for the Integration
Two Azure services can look nearly identical on paper. Both connect systems. Both can call an external API, transform data along the way, and handle e…
Let Aurora Sleep: Multi-Tenant SaaS Cost, Reconsidered with AI IaC
For most multi-tenant SaaS, the default still rhymes: PostgreSQL on Aurora, behind an API, in a private subnet. Stable, well-understood, the shape you…
Building BrewCore: Espresso Tracking on Vercel, DynamoDB, and Amazon Bedrock
Beyond the Timer: How I Built BrewCore for the H0 Hackathon Home espresso is a paradox. Baristas obsess over the micro-details the gram weight, the se…
I Built a Serverless Stranger-Matching Tool with Zero Database — Here is the Architecture
The elevator pitch You open fata.uk , write a few lines about what is on your mind, and AI finds a stranger whose emotional frequency matches yours. T…
Remotion + FFmpeg Micro: Programmatic Video Without the Lambda Bill
Originally published at ffmpeg-micro.com Remotion lets you build videos the same way you build React components. But moving those compositions from yo…
Building an ML-Powered Notification Routing Engine on AWS
Most applications send notifications using static schedules. The problem is that users have different engagement patterns. A notification sent at the …
Sending SMS from AWS Lambda with the Sinch SDK
Your payment just failed. The user needs to know before they try to check out again. Your deployment pipeline just finished. The engineer who kicked i…
I got tired of waiting for deploys, so I built a local Lambda runner
There's a specific kind of frustration that comes from iterating on Lambda code. You change one line. You run cdk deploy . You watch the CloudFormatio…
Tossed The T.V. but Kept the Remote? Here's how to NOT generate more E-Waste.
This is a submission for the GitHub Finish-Up-A-Thon Challenge Link to the Repo So what is this? Doesn't look like an API 👁️👁️ Tossed The TV Kept the …
I Built pretext-pdf: Serverless PDFs Without Chromium
I Built pretext-pdf: Serverless PDFs Without Chromium I got frustrated with PDF generation in Node.js. Every tool had trade-offs, and none of them fel…
Why I Built MentionFox Instead of Just Using Mention.com
Most founders who build a competitor to an existing tool do it because they couldn't afford the original. That wasn't my situation. I was paying for M…
Cold Starts in Serverless
The Great Serverless Pause: Battling the "Cold Start" Beast Ever ordered a pizza and it took ages to arrive, leaving you ravenous and staring at an em…
Why AI Image Generation Should Be Async
AI image generation can look like a simple request-response feature. A user enters a prompt, clicks generate, and waits for an image. For a prototype,…
A Scaling Lesson Building Production-Grade Agentic AI Systems
A Scaling Lesson Building Production-Grade Agentic AI Systems One of the early observations we had while designing enterprise AI agents was this: Givi…
Operational Hardening — Guardrails, Secrets Rotation & SLO — FSx ONTAP S3AP Phase 12
TL;DR Phase 12 hardens the Phase 11 event-driven pipeline for production: capacity guardrails, automated secrets rotation, SLO observability, and Pers…
Why Your FSx for ONTAP Audit Logs Deserve Better Than EC2
TL;DR FSx for ONTAP file access audit logs are usually consumed through EC2-based patterns — mounted audit volumes and agent-based forwarders such as …
I Spent 6 Hours Debugging AWS Before Realising the Bug Was a Capital Letter
I stared at my screen for 6 hours. The API kept returning 404. I checked the Lambda code line by line. I tested the DynamoDB table. I redeployed the A…
How I Locked Down a Static Site with Lambda@Edge and Cognito (No Backend Required)
Your internal docs are wide open. That Docusaurus site you deployed to S3? The one with your API specs, runbooks, onboarding guides? Anyone with the U…
How I Wired Claude AI into My SaaS and What Actually Worked vs. What Was Just Hype
I built shadibiodata.com — a marriage biodata maker for Indian families. This isn't a post about the product. It's about the specific technical decisi…
We Built a Poor Man’s o1 on AWS for $0.25 – And You Can Too
I remember the first time I tried OpenAI’s o1. I asked it a gnarly infrastructure question: “Design a multi‑region, strongly consistent queue that sur…