How I Built an SEO-Optimized Portfolio with Next.js 16
A practical walkthrough of how I built this very portfolio — covering Static Site Generation, JSON-LD structured data, Open Graph images, and a 68-k…
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Building a TypeScript Code Radar: What an AST Reveals That Text Search Misses
Today I started experimenting with Tree-sitter . I had heard the name before, but I had never actually used it. My goal was simple: take a TypeScrip…
Redora 0.3.1 — Redis for NestJS
There are already good Redis tools for NestJS. Most of them mainly help you connect NestJS to Redis and use the Redis client. That's useful, but as…
The Criteria pattern in NestJS: what a client may ask for is a file, not a signature
The Criteria pattern in NestJS One single way to filter, sort and paginate any list. Five parameters and a find() The example running through this a…
Transactions in NestJS and TypeORM without passing the EntityManager around
Transactions promise a simple guarantee: either everything commits, or nothing does. And yet, in a NestJS application with a repository layer, it is…
NestJS Error Capture: Tracking HTTP Exceptions Through Filter and Interceptor Boundaries
For a production logistics agent, error tracking should use one failure envelope at every execution boundary, then attach cost and latency before th…
The Repository Pattern in NestJS: a collection that happens to live in a database
The canonical starting point for a NestJS module backed by TypeORM is the one the framework itself documents: the module declares TypeOrmModule.forF…
Next.js + NestJS: Useful Architecture or Unnecessary Complexity?
Next.js and NestJS are often compared as if you have to choose one. But that comparison is slightly misleading. Next.js is primarily a React framewo…
Building Multi-Tenant Auth from Scratch Is Painful. So I Open-Sourced MT-URBAC (NestJS + Angular)
Every time you build a SaaS product, you hit the same wall: spending the first few days re-writing multi-tenant architecture, handling tenant contex…
Reliable Webhook Processing in NestJS: Signatures, Idempotency, Retries & Queues
Build reliable NestJS webhooks for SaaS payments and integrations using signature verification, idempotency, durable inboxes, queues, retries, and o…
I Created a NestJS Delivery Dispatch Backend with Concurrency Control & Dockerized Postgres
I built this delivery dispatch service to practice and master core backend engineering fundamentals in NestJS. Instead of just building a basic CRUD…
Building a tamper-evident audit log in NestJS with hash chains
Most audit logs are a lie by omission. You write a row that says "user X deleted document Y at 12:03." A week later, an incident review pulls it up,…
nestjs-docfy: mock servers, contract testing, and a much sharper MCP server
A few weeks ago I shared nestjs-docfy here — a library that moves Swagger decorators out of NestJS controllers into companion *.controller.docs.ts f…
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 Nes…
NestJS v12.0 vs. Ditsmod v3.0: Application Lifecycle and Graceful Shutdown (Part 5)
Welcome to Part 5—the grand finale of our "NestJS v12.0 vs. Ditsmod v3.0" series! Over the last four articles, we have unpacked the strict Dependenc…
NestJS v12.0 vs. Ditsmod v3.0: Dynamic Modules, Providers, and the Power of Extension Groups (Part 3)
Welcome to Part 3 of the "NestJS v12.0 vs. Ditsmod v3.0" series! In our previous articles, we explored the strict Dependency Injection hierarchies a…
NestJS v12.0 vs. Ditsmod v3.0: A Deep Dive into Node.js Framework Architectures (Part 1)
If you are building enterprise-grade Node.js applications with TypeScript, chances are you are already deeply familiar with NestJS . It has become t…
Structured Logging for Node.js
In Monitoring a SaaS in Production we wired up metrics and alerts so the team knows something is wrong within minutes of it happening. Metrics tell…
Audit Logs You Can Trust
In Structured Logging for Node.js , I covered how to turn scattered console.log calls into structured, queryable events. That solves the "what happe…
Scaling a SaaS Beyond One Server
In Deploying a Full Stack SaaS , I got the app running in production on a single instance: Docker images, a CI/CD pipeline, one NestJS container and…
Monitoring a SaaS in Production
In the last article , I set up a pipeline that builds, tests, and deploys the monorepo automatically. That solves getting code out safely and repeat…
Organizations, Teams, and Invitations
In Subscription Billing and Plans we wired up the part of the product that collects money. This article covers the part that gets people into the pr…
Subscription Billing and Plans
Last time, in Accepting Payments with Stripe , I covered the part everyone assumes is the hard bit: taking a card and moving money. It isn't, really…
A Production Security Checklist
We spent the last article making the app fast. This one is about making sure it's still standing when someone tries to break it. That's the uncomfor…
The Quiet Risk in How Most Banks Store Customer Documents, and How NestJS Handles It Properly
A compliance officer at a bank was preparing for an upcoming audit when she asked a question nobody on the engineering team had a clean answer to. E…
A Bank Wanted to Use AI to Approve Loans Faster, Here Is What I Would Build Around It in NestJS
A loan officer at a small digital bank was excited about the new model the data team had built. It could score a loan application in under a second,…
The First Question I Would Ask a Bank Before Using NestJS to Make Sure Their Money Is Always Accounted For
A finance officer at a mid sized bank was closing out the month when the numbers refused to line up. Customer accounts held a few cents more, in tot…
A Folder Structure That Scales for Full Stack SaaS
Your .env files are validated and out of Git by now, thanks to the last article on managing environment variables and secrets . The app boots with t…
Building Production-Ready AI Features in Next.js: Beyond the Chatbot
Most AI tutorials teach you how to send a prompt to an LLM and display the response. That's enough for a demo. But building AI features that are rel…
A founder once asked me why refunds kept disappearing, here is what NestJS was actually doing
A founder once messaged me with a problem that sounded almost too simple to be real. Customers were saying they never received their refund. Support…