OAuth, OIDC, SAML, SSO, and JWT: A Beginner’s Guide to How Login Actually Works
If you have clicked “Sign in with Google,” connected Spotify to a third-party app, or opened your work laptop and found every internal tool already logged…
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Writing on data systems, software engineering, and building for the web.
We Taught Our Backend to Read Handwriting (And Then Not Trust It)
Somewhere in every retail supply chain, there is a person typing.A vendor fills out a paper order form by hand. Vendor name, GSTIN, then a table of rows:…
Read moreWe Killed Bot Spam on Our Lead Forms Without Making a Single Human Click a Traffic Light
How we added Cloudflare Turnstile to every public form on our website, and the four small details that actually decided whether it workedThe problem: a…
Read moreContainerized Puppeteer on AWS Lambda: Architecture, Constraints, and Postmortems
Shipping pdfGenerationan HTML→PDF rendering service, as a container-image Lambda, fronted by API Gateway and an SQS FIFO queue. What we built, what broke,…
Read moreWhere Does My Code Actually Go? A Look Inside AWS Amplify Deployments
You push to a branch, wait two minutes, and your site is live. But what happened in between?Most people who use AWS Amplify never think about the…
Read moreHow I Deploy My Next.js Project to AWS Amplify (with ISR)
I recently moved a Next.js app onto AWS Amplify Hosting, and a few things tripped me up along the way - the build spec, the size limit, and how ISR…
Read moreHow to Add Payload CMS to Next.js Project
A step-by-step walkthrough of installing Payload, defining your content, rendering it, and deploying - based on setting it up on a real production Next.js…
Read moreI Finally Stopped My Server From Crashing on 1000-Page PDFs
Our app lets warehouse managers download barcode label PDFs, one label per box, up to 1,000 boxes in a single shipment. Small shipments were fine. Big…
Read moreHow I Added Langfuse to My AI Chatbot
A few weeks ago, a user told me “the bot logged the wrong calories,” and I had absolutely nothing to debug it with except one console.log line that only…
Read moreCSR, SSR, SSG, ISR: The Four Rendering Words That Confused Me for Way Too Long
When I first started with Next.js, these four acronyms were everywhere and nowhere explained simply. Every article assumed I already knew what “hydration”…
Read moreI Added SQS to My Backend :)
Here’s a mistake I almost made: I was building the onboarding flow for my app NutriCal, and right before returning a success response to the user, I was…
Read moreHow to Add Memory to Your AI Chatbot (No Vector Database Needed)
A practical guide to giving your LLM a working memory — using tools you probably already haveThere’s a specific kind of frustration that comes from…
Read moreI Finally Stopped Ignoring Vite’s Chunk Size Warning
How code-splitting turned my 664 KB monster bundle into something I’m not embarrassed bySo last night I was wrapping up a build of my calorie-tracking PWA, it has an AI chat feature, a Razorpay subscr...
Read moreYou Want to Turn Your Web App Into a PWA?
So You Want to Turn Your Web App Into a PWA?A while back, I went down the PWA rabbit hole for a side project, a little calorie tracker I’d built with React and Vite. I kept seeing the term “PWA” throw...
Read moreHow I Deploy My Next.js App on AWS Amplify
How I Deploy My Next.js App on AWS Amplify (Simple Guide + One Bug I Hit)A beginner-friendly walkthrough: why I picked Amplify, how I deploy, what it costs, and a sneaky bug I ran into.When my Next.js...
Read moreDeploying an Express Backend to AWS Lambda with GitHub Actions
Running an Express app locally is simple node index.js, done. Deploying it to AWS Lambda is a different story - not because it's hard, but because Lambda works nothing like a traditional server.Th...
Read moreRazorpay Integration in React + Node.js
Payments look simple from the outside. Show a button, collect money, unlock the feature.I wired up Razorpay into a subscription-based React + Node.js app recently and spent more time than I’d like to ...
Read moreWhy Your PDF Looks Fine on Screen but Blurry When Printed (Node.js)
LLM GeneratedWe generate barcode PDFs using Puppeteer. One day, a client reported that barcodes aren’t scanning properly after printing. We checked the PDF - looked fine. Opened it on screen - sharp a...
Read moreHow I Added APM to a Node.js App Using New Relic
Before New Relic, debugging a slow API in production meant one thing, staring at console.log output and guessing.Someone reports “the order page is slow.” You have no idea if it’s a slow query, a slow...
Read moreI Replaced Debezium with a Cron Job. Here’s How I Made It Reliable.
Debezium was going down 3–4 times a month. Its only job in our system was publishing events to Kafka — order created, PO created, that kind of thing. Every time it went down, events were lost.So I rep...
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