Node Js
Scalable BullMQ Queue with Redis for Node.js (2026)
Build a BullMQ task queue with Redis in Node.js, enabling horizontal worker scaling, automatic retries, and real‑time monitoring for reliable background jobs.
// author
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.
336 articles
leet code
Optimizing FastAPI for High‑Concurrency Microservices
TL;DR – Async / await removes I/O wait but does not guarantee high throughput. – Proper async drivers (asyncpg, SQLAlchemy async, aioredis) and sized pools cut latency by 40‑60 % (Uber…
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…
leet code
Canary Deployments in Jenkins Pipelines: A Step‑by‑Step Guide
TL;DR – Canary deployments let you test new code on a tiny slice of traffic before a full rollout. – Jenkins Declarative Pipelines, Helm 3.12,…
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…
leet code
Pgpool-II Best Practices for Distributed PostgreSQL
TL;DR – 5 Takeaways – Pgpool‑II sits between your app and PostgreSQL, handling connection pooling, read/write split, and HA failover. – The Watchdog process…
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…
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Secure, Scalable API Gateway with Kong for Microservices
⚡ Opening Hook During a Black Friday sale, the e‑commerce platform nileshblog.tech saw traffic soar to 120 k RPS. Within seconds, its customer‑facing services returned 502…
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…
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Docker Swarm vs Kubernetes: Monitoring & Alerting Strategies
TL;DR Docker Swarm’s simplicity keeps metric volume low, but you lose fine‑grained process insight. Kubernetes produces 40‑60 % more time‑series data; plan for storage and…
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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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…
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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…
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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…