AWS
18 articles · written by Niraj Kumar
AWS documentation tells you what each service does; these articles are about which one to pick when you are the whole infrastructure team and the bill is yours.
Coverage includes choosing between EC2, Lambda and ECS for a given workload, cloud-native patterns with S3, RDS and Lambda, infrastructure as code using AWS CDK and Terraform from a JavaScript background, hosting n8n on EC2 behind Nginx, zero-downtime Node.js deploys to EC2 via GitHub Actions, zero-trust security across AWS and Azure, and a cost-optimisation pass for a bootstrapped startup's stack.
- Event-Driven ArchitectureLangGraphNode.js
Architecting Event-Driven AI Agent Workflows: Integrating LangGraph, Node.js, and AWS for Real-Time Automation
Stop polling APIs. Learn how to build real-time, event-driven multi-agent AI workflows with LangGraph, Ollama local LLMs, Node.js, Express, n8n, Make.com, Socket.io, Next.js, Docker, and AWS — a practical 2026 blueprint for sovereign AI automation.
- AI AgentsLangGraphDocker
Architecting Sandboxed Code-Execution Agents: Ephemeral Docker Runtimes, LangGraph, and Real-Time Telemetry in Next.js
Build a zero-trust, sandboxed AI coding agent with LangGraph, Ollama, and Claude Code that runs Python, C++, and JavaScript in ephemeral, network-restricted Docker containers on AWS Linux, with JWT execution policies, PostgreSQL audit trails, and live Socket.io telemetry in a Next.js workspace.
- LLM GatewayAI FinOpsNode.js
Architecting a Self-Hosted Hybrid LLM Gateway: Dynamic Cost Routing, Semantic Caching, and Usage Billing with Node.js, Ollama, and Next.js
A hands-on 2026 guide to building a self-hosted hybrid LLM gateway with Node.js, Express, Nginx, and Ollama. Route LangGraph traffic by query complexity and latency, cache semantically in PostgreSQL with pgvector, log token telemetry in MongoDB, stream live costs to a Next.js dashboard, and bill usage through Stripe, Razorpay, and Cashfree.
- LangGraphHuman-in-the-LoopAI Agents
Engineering Durable Human-in-the-Loop (HITL) AI Workflows: State Checkpointing with LangGraph, PostgreSQL, and Next.js
Build enterprise-grade human-in-the-loop AI agents that pause for approval before Stripe or Razorpay payouts. Learn LangGraph interrupts, PostgreSQL checkpointing, Socket.io real-time dashboards in Next.js, an Express resume API, JWT/OAuth RBAC, n8n alerts, and Docker deployment on AWS.
- Voice AIOllamaWebSockets
Architecting Sub-50ms Voice AI Agents: Integrating C++ Inference Engines, Ollama, and WebSockets in Next.js
Build a real-time, full-duplex voice AI agent from scratch. Learn how to wire whisper.cpp, Ollama, Piper, Socket.io, LangGraph, Next.js, Redux and JWT auth into a containerized stack behind Nginx on AWS Linux.
- Claude CodeLangChainDevOps
AI-Assisted Platform Engineering: Automating CI/CD Pipelines and DevOps with Claude Code, LangChain, and Shell Scripting
Learn how to build self-healing CI/CD pipelines using Claude Code, LangChain agents, Docker, Nginx, and Shell scripting. A practical 2026 guide to AI-assisted platform engineering on AWS.
- Graph RAGLangChainPostgreSQL
Architecting an Enterprise Graph RAG Pipeline: Semantic Knowledge Discovery with LangChain, PostgreSQL, and Next.js
Build a sovereign, entity-aware Graph RAG pipeline with LangChain, Ollama, PostgreSQL and pgvector, an Express.js API and a Next.js + Shadcn UI frontend, then ship it with Docker, Nginx and GitHub Actions on AWS.
- LangChainAI AgentsNext.js
Automating Enterprise B2B SaaS: Integrating LangChain AI Agents, Next.js, and Zapier Workflows on AWS
A practical 2026 blueprint for building an AI-driven B2B SaaS: LangChain agents, a Next.js + Tailwind + Shadcn UI frontend, secure Express APIs with OAuth and JWT, Zapier automations, and zero-downtime Docker, Nginx and AWS deployments.
- UnityNode.jsSocket.io
Building a Server-Authoritative Multiplayer Game Backend: Real-Time State Sync with Unity, Node.js, and Socket.io
Learn how to build a server-authoritative multiplayer game backend with Node.js, Express, Socket.io, MongoDB and a Unity C# client, then ship it with Docker, GitHub Actions and zero-downtime deploys on AWS Linux.
- Payment Gateway IntegrationNode.jsExpress.js
Architecting Multi-Gateway Payment Systems: Orchestrating Webhooks with Node.js, n8n, and PostgreSQL on AWS
A practical 2026 blueprint for building a resilient multi-gateway payment backend. Integrate Stripe, Razorpay, and Cashfree with Express.js and PostgreSQL idempotency, automate reconciliation with self-hosted n8n and Make.com, push real-time updates with Socket.io, and ship it all with Docker, CI/CD, and AWS.
- React NativeClaude CodeSocket.io
AI-Assisted Mobile Development in 2026: Scaling React Native Apps with Claude Code, Socket.io, and Stripe
A hands-on 2026 guide to building a real-time, scalable React Native app with Claude Code, Redux Toolkit, Node.js, MongoDB, Socket.io, JWT/OAuth, Stripe and Razorpay, then deploying it on AWS with Nginx and a modern CI/CD pipeline.
- AWSCloud Cost OptimizationStartups
Cost‑Optimizing Your AWS Stack as a Bootstrapped Startup
Cut your AWS bill without losing performance — compute, storage, networking, databases and automation, from a bootstrapped startup's perspective.
- AWSCloud ArchitectureServerless
Building a Cloud‑Native Architecture on AWS with S3, RDS, and Lambda
Design a scalable, secure cloud-native SaaS on AWS with S3, RDS and Lambda — real patterns, code examples, and the trade-off behind each choice.
- Next.jsCI/CDGitHub Actions
Setting Up a CI/CD Pipeline for Next.js on GitHub Actions
Automate linting, testing, building and deploying a Next.js app to S3/CloudFront or Vercel with GitHub Actions — a complete working pipeline.
- AWSEC2Lambda
AWS EC2 vs Lambda vs ECS: Which Server Architecture Fits Your App?
A cost-and-scaling comparison of AWS EC2, Lambda and ECS to help you pick the right compute for your backend — with the break-even points.
- n8nAWSEC2
Hosting n8n on AWS EC2 with Nginx: A Complete Production Guide
Self-host n8n on AWS EC2 step by step — Docker Compose with Postgres, an Nginx reverse proxy, Let's Encrypt HTTPS, plus backups and upgrades.
- Cloud SecurityZero TrustAWS
Cloud Security Essentials for Developers: Designing Zero-Trust Architectures on AWS/Azure
Design zero-trust security on AWS and Azure — IAM policies, network segmentation, service mesh and secrets management, with real code examples.
- Cloud-NativeMicroservicesAWS
Cloud-Native SaaS in 30 Days: Designing and Deploying a Microservices App on AWS/Azure
Build and deploy a production cloud-native SaaS with microservices on AWS and Azure in 30 days — architecture, containers, CI/CD, and the deploy.
Related topics
- Retrieval-Augmented Generation (RAG)
- LangChain & LangGraph
- Large Language Models
- AI Agents
- Next.js
- React
- TypeScript
- Node.js
- PostgreSQL
- Docker & Containers
- DevOps
- CI/CD
- Application Security
- n8n Automation