Next.js
25 articles · written by Niraj Kumar
Next.js changed shape with the App Router, and a lot of advice written for the Pages Router is now actively wrong. These articles are written against the current model: Server Components by default, Server Actions for mutations, and caching you have to reason about explicitly rather than inherit.
Coverage includes what actually changed in Next.js 16 and what is worth adopting, streaming AI responses through the App Router with Server Actions, performance work for AI-heavy SaaS pages, React Server Component patterns, securing Next.js applications, CI/CD pipelines with GitHub Actions, and accessible form patterns with shadcn/ui.
Where a post touches retrieval or agents, it uses Next.js as the application layer rather than treating it as the subject.
- 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.
- MCPModel Context ProtocolLangGraph
Engineering Custom MCP Servers for Local AI Agents: Bridging PostgreSQL, MongoDB, and REST APIs with LangGraph and Next.js
A hands-on 2026 guide to building secure TypeScript MCP servers that connect local Ollama models and Claude Code to PostgreSQL, MongoDB, and REST APIs, orchestrated with LangGraph, streamed to a Next.js dashboard, and deployed with Docker and Nginx on AWS.
- 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.
- 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.
- Small Language ModelsLoRAPEFT
Fine-Tuning Domain-Specific Small Language Models (SLMs): A Full-Stack LoRA Pipeline with Python, Ollama, and Next.js
A hands-on 2026 guide to fine-tuning domain-specific Small Language Models with LoRA in Python, exporting to GGUF, serving with Ollama in Docker, testing APIs with Postman, and monitoring everything in a Next.js dashboard.
- Agentic RAGLangGraphOllama
Building a Privacy-First Agentic RAG System: Integrating Ollama, LangGraph, and PostgreSQL in a Next.js App
Learn how to build a local, privacy-first agentic RAG system using Ollama, LangGraph, PostgreSQL with pgvector, and a Next.js frontend with Shadcn UI. Step-by-step code, Docker setup, best practices, and common mistakes.
- AbortControllerNext.jsNode.js
How to Kill Zombie LLM Streams: Propagating AbortController from Next.js to Node.js and Ollama
Stop paying for tokens nobody reads. Learn how to propagate AbortController from Next.js through Express, LangChain and Ollama so closing a tab or clicking Stop actually halts GPU inference.
- AI SecurityPrompt InjectionNext.js
How to Protect Your AI Application from Prompt Injections using Llama Guard and Next.js Edge Middleware
A practical 2026 guide to securing RAG and LLM applications against prompt injection and jailbreak attacks using Llama Guard, Ollama, Next.js Edge Middleware, and PostgreSQL-based threat logging aligned with the OWASP Top 10 for LLMs.
- OpenTelemetryNext.jsPostgreSQL
How to Track Per-Tenant LLM Token Costs in Next.js using OpenTelemetry and PostgreSQL
Instrument Next.js with OpenTelemetry, trace server-side LangChain calls, and attribute AI inference costs per tenant in PostgreSQL for usage billing.
- RAGPostgreSQLNext.js
How to Build a Secure Multi-Tenant RAG Pipeline using PostgreSQL Row-Level Security, Next.js, and JWT Auth
Stop cross-tenant leaks in B2B AI SaaS — PostgreSQL Row-Level Security for embeddings, tenant IDs from Next.js JWTs, and isolated retrieval.
- GraphRAGLangChainOllama
How to Build a Local GraphRAG Pipeline with PostgreSQL, LangChain, and Ollama for Multi-Hop Reasoning
Build a fully local GraphRAG system with LangChain, Ollama and PostgreSQL — extract entity triplets, store a knowledge graph, run multi-hop queries.
- Next.jsReact 19Server Actions
How to Build a Real-Time AI Streaming UI with Next.js App Router, Server Actions, and Shadcn UI
Stream AI responses token by token in Next.js with Server-Sent Events, React 19's useOptimistic and useTransition, and an accessible shadcn/ui chat.
- Next.jsShadcn UIAccessibility
Building an Accessible Multi-Step Form with Next.js App Router and Shadcn UI
Build a type-safe, accessible multi-step form in Next.js App Router with Server Actions, Zod and shadcn/ui — focus management and ARIA included.
- 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.
- Next.jsAI SecurityWeb Security
Securing Your AI-Powered Next.js Applications: Best Practices
Secure AI-powered Next.js apps — API key management, data privacy, input validation, and defence against prompt injection, SSRF and friends.
- Next.jsPerformanceAI
Optimizing Next.js Performance for AI-Powered SaaS Applications
Advanced Next.js performance work for AI SaaS products — streaming, caching, edge functions, and serving model responses at scale without stalls.
- RAGLangChainNext.js
Building a Production-Ready RAG System with LangChain and Next.js
Architect and build a production RAG system with LangChain for orchestration and Next.js for the UI — ingestion, retrieval, streaming, deployment.
- Tailwind CSSShadcn UIReact
Building a Dashboard UI with Tailwind CSS and Shadcn UI
Build a production dashboard UI with Tailwind CSS and shadcn/ui — auth flows, dark mode, responsive layouts and interactive components, from scratch.
- Next.jsReactApp Router
Next.js 16 in 2026: What's New and What You Should Actually Use
What actually changed in Next.js 16 — App Router improvements, Server Components, smarter caching and Turbopack GA, and which parts to adopt now.
- TypeScriptNext.jsNode.js
Full-Stack TypeScript for 2026: Building a Job-Ready App with Next.js, Node, and Postgres
Build a production full-stack TypeScript app with Next.js, Node.js and PostgreSQL — setup to deploy, with the patterns hiring teams expect.
- TypeScriptReactNext.js
Advanced TypeScript Patterns: Scalable Frontend Architectures for Large React/Next.js Codebases
Type-safe patterns and modular architecture that scale across large React and Next.js codebases — the techniques senior frontend roles expect.
Need this built rather than explained?
Next.js 15/16 App Router apps with TypeScript, Server Actions, and Vercel/AWS deploys.
Next.js Developer Services →Related topics
- Retrieval-Augmented Generation (RAG)
- LangChain & LangGraph
- Large Language Models
- AI Agents
- React
- TypeScript
- Node.js
- PostgreSQL
- Docker & Containers
- DevOps
- CI/CD
- Application Security
- AWS
- n8n Automation