All articles — page 2
Showing 12 of 112 articles on AI systems, retrieval, backend engineering and DevOps.
- 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.
- 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.
- PostgreSQLCDCSemantic Cache
How to Prevent AI Context Poisoning using PostgreSQL CDC for Real-Time Semantic Cache Invalidation in Node.js
Learn how to stop stale semantic caches from poisoning your AI agents. Build a real-time invalidation pipeline with PostgreSQL CDC, a Node.js worker, and an embedding similarity radius to flush outdated cache entries instantly.
- LangGraph.jsZodAI Agents
How to Build a Self-Healing Tool Call Execution Loop using Zod and LangGraph.js
Learn how to build a self-healing tool call loop in LangGraph.js. Validate LLM tool arguments with Zod, route failures to a correction node, and let local models fix their own invalid JSON.
- AI AgentsNode.jsVector Database
How to Build an Agentic Memory Garbage Collector in Node.js to Prevent Vector Store Context Poisoning
Learn how to build a Node.js memory garbage collector for AI agents. Implement time-weighted relevance decay, semantic deduplication, and safe pruning to stop vector store context poisoning and hallucination cascades.
- LangGraphPostgreSQLAI Agents
How to Implement Transactional State Rollbacks for AI Agents in LangGraph and PostgreSQL
Learn how to wrap LangGraph tool nodes in PostgreSQL savepoints, roll back partial failures deterministically, and stop duplicate billing before your LLM retries.
- LangGraph.jsAI AgentsContext Engineering
How to Implement Hierarchical Context Compaction in LangGraph.js to Prevent Agent Context Drift
A practical, code-first guide to building a hierarchical context compaction layer in LangGraph.js — using Ollama for local summarization and PostgreSQL checkpointing to stop long-running AI agents from drifting off-goal.
- pgvectorPostgreSQLNode.js
How to Sync pgvector Embeddings in Real-Time using PostgreSQL Triggers and Node.js Background Workers
Stop relying on cron jobs for vector search. Learn how to build a real-time, event-driven pipeline using PostgreSQL triggers, an outbox table, and isolated Node.js background workers to keep pgvector embeddings fresh without locking your production database.
- Node.jsLLM SecurityPII Masking
How to Build a Two-Way PII Masking and Re-hydration Middleware in Node.js for Enterprise LLM Pipelines
A production-focused guide to building an Express.js middleware that detects, tokenizes, and re-hydrates PII in real time — keeping GDPR- and HIPAA-sensitive data out of your LLM prompts without breaking conversational context.
- 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 InjectionNode.js
How to Build a Zero-Trust AI Sanitization Middleware in Node.js to Prevent Indirect Prompt Injection
Learn how to build a zero-trust sanitization middleware in Node.js and TypeScript using Express and js-tiktoken to defend against indirect prompt injection, enforce hard token limits, and stop untrusted RAG data from hijacking agentic tool calls.
- DockerNode.jsAI Agents
How to Build a Secure Docker-Isolated Code Execution Sandbox for AI Agents in Node.js
Learn how to safely run untrusted LLM-generated code using Node.js and the Docker Engine API. A practical guide to ephemeral containers, cgroup limits, network isolation, and seccomp profiles for AI agent sandboxes.