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System Desgin
Docker Desktop WSL2 VM Unexpectedly Exited: Fixes
The email hit at 14:47 on a Tuesday. Production deploy frozen. Twelve developers staring at the same modal: “Docker Desktop WSL2 VM unexpectedly exited.”…
// category archive
System Desgin
27 articles
System Desgin
ORM Audit Logging & Soft Deletes: A Complete Guide (2024)
Learn how to add soft‑delete columns and immutable audit logs in your ORM, keep queries fast with proper indexes, and prevent storage bloat via…
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…
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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 %…
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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.
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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…
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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…
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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…
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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…
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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…
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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…
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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…
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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…
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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…
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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…
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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…
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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.…
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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,…