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Technical Writing

Deep-dives on backend engineering, cloud infrastructure, and AI — written from real production experience.

Developer Tools
Jul 15, 2026·7 min read

I Built a CLI Tool to Reclaim Disk Space from node_modules — Here's How It Works

deepclean-cli scans your entire projects directory, finds every node_modules folder, reports the exact disk space used, and deletes them safely — with dry-run mode, a confirmation prompt, and support for any folder name.

Node.jsCLIOpen SourceDeveloper Toolsnpm
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Backend / Security
Jul 8, 2026·9 min read

LLM API Keys in Frontend Code — A Security Risk Most Developers Underestimate

Over 8,000 OpenAI API keys are publicly accessible right now — most ended up there because a developer followed a tutorial. Here's the principle, the patterns, and the code to fix it permanently.

SecurityOpenAINode.jsReactLLM
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Backend / Security
Jul 8, 2026·10 min read

Your AI Coding Assistant Is Reading Your .env File Right Now

GitHub Copilot, Cursor, and Claude Code index your entire project by default — including API keys and credentials. Here's how to set up ignore rules, restrict permissions, and enable approval-first edit mode before it costs you.

SecurityAI ToolsVS CodeCursorClaude Code
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JavaScript
Jun 19, 2026·10 min read

What's New in ES2025: Iterator Helpers Explained

Iterator Helpers hit Baseline in mid-2026 — all major browsers and Node.js 22+ ship them natively. Here's why lazy evaluation changes how you process data, and every new method with real examples.

JavaScriptES2025IteratorsNode.jsPerformance
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Backend / Security
Jun 19, 2026·11 min read

JWT Auth Best Practices in Node.js — What Most Tutorials Get Wrong

Most JWT tutorials skip the hard parts — token storage, refresh token rotation, forced logout, and revocation. This is what production auth actually looks like.

JWTNode.jsTypeScriptSecurityAuth
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Cloud / DevOps
Jun 18, 2026·10 min read

Monitoring Node.js Microservices with Prometheus and Grafana

A complete guide to setting up production observability for Node.js microservices — Prometheus scraping, custom metrics with prom-client, Grafana dashboards, and Alertmanager alerts to Slack and PagerDuty.

PrometheusGrafanaAWS ECSNode.jsAlertmanager
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Blockchain
May 24, 2026·12 min read

Building a Blockchain Explorer for Substrate Chains with 3 Microservices

How I architected a production blockchain explorer for Substrate-based chains — an RPC server, a block worker that subscribes to new heads and parses extrinsics/events, and a WebSocket broadcaster for real-time frontend updates.

SubstrateNode.jsMicroservicesWebSocketsPolkadot
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AI / Computer Vision
May 10, 2026·8 min read

Building a Real-Time Object Detection Pipeline with Python and OpenCV

A practical guide to building a production-ready computer vision pipeline using Python, OpenCV, and a pre-trained YOLO model — from local prototype to a REST API endpoint.

PythonComputer VisionOpenCVYOLOREST API
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Cloud Infrastructure
May 20, 2026·10 min read

Deploying Node.js Microservices on AWS ECS with Docker and CI/CD

Step-by-step guide to containerising a Node.js service with Docker, pushing to ECR, defining ECS task definitions, and wiring up a GitHub Actions CI/CD pipeline for zero-downtime deployments.

AWSECSDockerNode.jsCI/CDGitHub Actions
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