In-depth, opinionated guides on shipping production AI systems — Retrieval-Augmented Generation (RAG), LangChain and LangGraph agent workflows, vector search, Next.js performance, TypeScript architecture, and the DevOps that holds it all together. Every post is written for engineers who have to make the trade-offs, not just describe them.
· Written by Niraj Kumar
Practical breakdowns of AI systems, scalable backends, modern web stacks, and production-ready engineering.
122 articles found
A practical, production-grade blueprint for building autonomous AI shopping assistants. Learn how to combine LangGraph and Ollama for conversational product discovery, a Next.js + Shadcn UI storefront, a Node.js + PostgreSQL cart API, Stripe Connect multi-vendor checkout, and Docker deployments on AWS.
Read ArticleA practical 2026 blueprint for building a super-vertical micro-SaaS with embedded usage-based payments (Stripe + Cashfree), a Zero-Trust PostgreSQL backend with Row-Level Security, Node.js/Express APIs, n8n workflows, local LLM enrichment via Ollama, and a Next.js + Shadcn UI dashboard deployed on AWS with Docker and CI/CD.
Read ArticleA hands-on 2026 blueprint for building a real-time, multiplayer infinite canvas where users visually wire AI agents together. Learn how to compile React Flow nodes into LangGraph pipelines running on Ollama, sync canvases with Socket.io, persist to MongoDB, meter usage with Stripe, and deploy with Docker on AWS.
Read ArticleA practical 2026 blueprint for building a B2B Micro SaaS that uses LangGraph agents and local Ollama models to read API docs, generate Node.js/Express connectors, route them through a human-in-the-loop Next.js review queue, persist state in PostgreSQL, and bill with Stripe on AWS.
Read ArticleA practical blueprint for building an AI-native QA testing SaaS: self-reflecting LangGraph agents on local Ollama models, a Node.js and PostgreSQL test queue, real-time Socket.io logs in a Next.js dashboard, and usage-based Stripe billing on AWS.
Read ArticleA hands-on 2026 blueprint for building an autonomous, multi-tenant enterprise CRM with Agent-to-Agent (A2A) workflows. Learn to orchestrate agents with LangGraph, stream live agent state over Socket.io, store GraphRAG knowledge in PostgreSQL with row-level security, and ship a human-on-the-loop Next.js dashboard with Docker.
Read Article122 articles grouped into the subjects they go deepest on. Each hub collects the full series for that topic.
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