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…
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Nilesh Raut
’m Nilesh, a Software Development Engineer with 2+ years of experience, specializing in Go, JavaScript, Python, Docker, Kubernetes, Git, Jenkins, microservices, and system design (LLD/HLD), backed by a strong foundation in data structures and algorithms. Alongside my engineering journey, I bring 4+ years of hands-on experience in SEO, where I’ve worked extensively on content strategy, keyword research, technical SEO, and organic growth, helping products and businesses scale efficiently by aligning solid technology with search-driven performance.
380 articles
leet code
Event‑Driven Notification Service with Go & WebSockets
TL;DR – Real‑time push beats polling by up to 80 % latency (Cloudflare, 2023). – Go’s goroutine model lets a single server juggle tens of thousands of…
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…
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AI
Multi-Agent Systems Explained: How AI Agents Work Together (2026)
A clear, jargon-free explainer on multi-agent AI systems: how specialized agents coordinate, the three core architecture patterns, MCP vs A2A protocols, and when not…
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Tutorials
How to Run the Claude API in Node.js (2026 Step-by-Step Guide)
A complete, beginner-friendly guide to calling the Claude API from Node.js — SDK setup, your first request, streaming, multi-turn chat, error handling, and an…
leet code
Robust Health Checks for Python Microservices in Kubernetes
⚡ Opening Hook A fresh deployment of a Flask‑based order service went live at 02:13 AM. Within minutes the e‑commerce checkout stalled, customers saw “Service…
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…
leet code
Best Multi-Region Kubernetes Secrets Management
⚡️ TL;DR – Treat secrets as short‑lived, rotating assets and never store them plaintext in git or container images. – Pick a single source‑of‑truth…
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…
leet code
Build a CI/CD Pipeline with Tekton & ArgoCD – Kubernetes Native
TL;DR – Quick Takeaways Tekton + ArgoCD give you a fully declarative, Kubernetes‑native CI/CD stack that scales with your workloads. Separate concerns: Tekton runs the build‑test‑containerize…
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…
leet code
Custom Operators for Managing Stateful Apps on Kubernetes
TL;DR – Quick Takeaways StatefulSets can spin up pods, but they stumble when a workload needs coordinated upgrades, backups, or external‑system integration. Operators embed…
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…
leet code
Debugging gRPC Connection Timeouts in Microservices
TL;DR – gRPC deadline is an absolute end‑time; a timeout is a relative network limit. – Propagate deadlines through each hop; never let a…
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…
leet code
Zero‑Downtime Database Migrations in Kubernetes
TL;DR – Quick Takeaways Treat schema changes like feature rollouts: use blue‑green or canary patterns and guard every step with feature flags. Dual‑write +…
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.…
leet code
Service Mesh vs API Gateway for Go Backends – Key Insights
TL;DR – Service Mesh shines for east‑west traffic, while an API gateway is the front door for north‑south requests. – A sidecar proxy adds…