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…
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How I Shipped 91+ Privacy-First Utilities with $0 Server Cost: The Architecture of OmniUtil.pro
Every time you want to format a piece of JSON, debug a JWT token, compress a PDF, or erase a photo's background, you make a compromise. You upload you…
Integrating Lambda Durable Functions into a Step Functions Workflow
At re:Invent 2025, AWS announced Lambda Durable Functions . The feature introduces a checkpoint/replay mechanism that allows Lambda executions to run …
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…
Connect Redis, Postgres, and MySQL to Serverless Apps Over HTTPS
Serverless and edge runtimes are great until your app needs a normal TCP database connection. ZedGi works with: TypeScript / JavaScript SDK : Cloudfla…
Connect Redis, Postgres, and MySQL to Serverless Apps Over HTTPS
Serverless and edge runtimes are great until your app needs a normal TCP database connection. ZedGi works with: TypeScript / JavaScript SDK : Cloudfla…
Running a 120-site uptime monitor for $0/month on Cloudflare's free tier
I built a tool that answers one question: when a website won't load, is it your connection or the site? It runs two checks in parallel — measures your…
The Background Task That Froze: A Serverless CPU-Throttling Mystery
💡 Lesson learned building an agent on Cloud Run: don't schedule work to run after you send the response. On Cloud Run's default request-based CPU mode…
There are ~10 independent PDF engines. We built another one.
KeyPDF was developed over around 14 months, and we achieved true editing of the text with preservation of fonts, alignments, and overall structure. Ke…
My "Deploy to Cloudflare" button disabled auth
I recently open-sourced Minvoice , a small invoicing app that runs entirely on Cloudflare Workers. Like every well-behaved open-source Workers project…
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…
How I Built an Ultra-Fast Bilingual Dictionary Handling 293,000+ Words on the Edge
Every developer has that one project. The passion build that sits in the back of your mind for months—or even years—before you finally sit down, crack…
`wrangler dev --remote` silently writes to your production KV namespace — here's the fix
I lost production data on a Tuesday afternoon because wrangler.toml had one missing field. Not a code bug. Not a logic error. A missing preview_id . B…
A/B Testing at Warp Speed: How Cloudflare Workers Revolutionize HTML Experiments
Let's be honest—traditional A/B testing is broken. If you've ever implemented client-side testing, you know the drill. Your users load the page, wait …
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…
My "serverless" database was billing me like it never slept.
My "serverless" database was billing me like it never slept. Neon has this great feature called scale-to-zero. Your Postgres compute suspends when it'…
Serverless image pipeline with aws lambda+node+wasm: from 11.5mb to 91.2kb
A while back I needed to process thousands of images for an e-commerce platform: multiple versions per product, carousel, thumbnail, invoice miniature…
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 stopped checking my Modal dashboard because my agent does it for me
I used to spend way too much time context-switching between Cursor, my terminal, and the Modal web dashboard. You know the drill: a GPU job is running…
800 simultaneous Workers, one cache miss, $40/mo surprise — the Cloudflare coalescing fix
A Korean flash sale at 9PM cost me $40 in a single month — not from KV reads, but from 800 concurrent Workers all racing to fetch the same product JSO…
BurnAfterRead – E2E encrypted self-destructing drops on Cloudflare Workers
I built a zero-knowledge secret sharing tool. Text and files are encrypted in the browser with AES-GCM 256 before upload - the server only ever sees c…
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…
My Durable Objects alarm loop burned CPU for 3 days before I noticed — here's what the docs miss
A 30-line Slack notifier was eating 60% of my CPU-time budget across 4 client Workers. The culprit: a runaway alarm loop I assumed was impossible. Her…
KV locks for Workers cron jobs will silently fail — here's what I use instead
A ghost lock blocked every cron trigger for 6 hours after a Korean ad-network API took 45 seconds to respond — 15 seconds past the Workers wall clock …
Migrating AWS Lambda from Node.js 20 to 22 — every breaking change
AWS deprecates Lambda runtimes on a 3-phase schedule: Phase 1 ends security patches, Phase 2 blocks creating new functions, Phase 3 blocks updating ex…
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…
The NOT NULL trap that killed my Cloudflare Worker at 2:47am
A single ALTER TABLE statement took down one of my Workers mid-deploy. No maintenance window, no graceful fallback — just a wall of 500s while live tr…
How We Built an AI SaaS on the Edge for Nearly $0 in Infrastructure Costs
1. Introduction A few months ago, we started building Propoza , a tool that generates business proposals with AI for Brazilian freelancers and small b…
D1 read replicas returned stale data for 6 seconds — here's what I measured and how I designed around it
At p99, a D1 read replica in Tokyo was 6.1 seconds behind a write that landed on the Eastern NA primary. I found this out not from the docs, but from …