System Desgin
Build a Low‑Code AI Agent Builder UI with React & Node.js
TL;DR – A drag‑and‑drop canvas lives best on a dedicated canvas library; React only stores the intent. – Store nodes + edges in a relational DB…
// category archive
System Desgin
25 articles
System Desgin
Design Patterns for Resilient, Self‑Correcting AI Agents
TL;DR – 70 % of production AI agent glitches stem from logical loops, not crashes. – Circuit Breaker + Retry cuts workflow failure by 40 %…
System Desgin
Designing a Scalable Redis JWT Session Store (2026 Guide)
Learn how to build a Redis‑backed JWT session store that offers instant token revocation, auditability, and million‑scale sessions while staying under 5 ms latency.
System Desgin
Monitoring & Logging JavaScript AI Agents in Production
💡 Pro Tip: Skipping observability until after your AI agent goes live usually ends with painful firefighting sessions. TL;DR Start simple: Add a correlation…
System Desgin
Human-in-the-Loop Approval Workflow for AI Agents
TL;DR – Human‑in‑the‑loop (HITL) checkpoints can stop >70 % of AI mishaps, according to Stanford HAI. – Choose Gatekeeper for tight safety (synchronous), Auditor for…
System Desgin
Scale LangChain.js Agents on Kubernetes Fast & Cheap
⚡ Hook: When the checkout page of a fast‑growing e‑commerce site suddenly returned “Service Unavailable” after a weekend spike, the ops team traced the…
System Desgin
AI Agent Integration Patterns for REST APIs & Microservices
TL;DR – AI agents need more than a raw OpenAPI spec; they require orchestration, adapters, and resiliency patterns. – Choose between synchronous REST calls…
System Desgin
Custom AI Agent & Function-Calling Framework with TypeScript
Hook: A customer‑support bot that promised “instant answers” stalled at the third user request, spitting out “I’m sorry, I don’t understand.” The failure traced…
System Desgin
Persistent Memory & Context for JavaScript Conversational AI
TL;DR – Stateless chat models forget most of the conversation after a handful of turns. – Adding a persistence layer (Redis, PostgreSQL JSONB, or…
System Desgin
Cost Optimization for OpenAI Assistants API in Node.js
TL;DR – Quick Takeaways Keep Assistant threads short when possible; long‑lived threads inflate token counts. Cache recurring prompts and reuse completions to cut per‑call…
System Desgin
Vercel AI SDK vs LangChain.js: React AI Agent Comparison
TL;DR – Vercel AI SDK gives you a lean, edge‑first experience; launch a streaming chat UI in minutes. – LangChain.js shines when you need…
System Desgin
Secure API Keys & Prompts in Client‑Side JS AI Agents
TL;DR – Never embed production API keys directly in browser‑side JavaScript. – Use a backend proxy or server‑less function to shield credentials. – Add…
System Desgin
Local Document Q&A Agent with LlamaIndex.js & Next.js
TL;DR – Local RAG avoids data leakage and cuts per‑query costs. – Next.js 14’s App Router pairs nicely with LlamaIndex.js for end‑to‑end pipelines. – Choose…
System Desgin
Orchestrate Multi‑Step LLM Workflows with Node.js & CrewAI
💡 Pro Tip: If you ever watched an LLM “hallucinate” in a production ticket‑routing system, you know the pain of hand‑off failures. The story…
System Desgin
Debugging LLM Agent Hallucinations in JavaScript Apps
⚡ Opening Hook When a shopping‑cart bot on nileshblog.tech suggested a “premium banana‑infused Bluetooth speaker” to a customer, the order blew up the checkout pipeline.…
System Desgin
Implement AI Agents with LangChain.js – Beginner Guide
TL;DR – LangChain.js lets you stitch LLMs, tools, and memory into a single runnable agent. – You only need Node ≥ 18, an OpenAI API key,…
System Desgin
AI Code Reviewer in GitHub Actions: 2026 Guide
TL;DR – Native GitHub CodeQL misses semantic bugs that LLMs can spot. – Choose between local LLM inference and managed API with a decision…
Backend Dev
From PR to Production: How Kubernetes Deployments Actually Work (Single Service + Microservices in the Real World)
Most developers know how to write code. Fewer understand what actually happens after they click “Merge Pull Request.” And even fewer truly understand what…