Engineering notes

Blog Articles

Brushed metal security key entering a white server vault surrounded by green firewall ringsDevOps

Harden SSH on Ubuntu with Keys, UFW, and Fail2Ban

Lock down Ubuntu SSH with Ed25519 keys, UFW, and Fail2Ban while avoiding remote lockouts, with verification and recovery steps.

7 min read
Developer workspace visualizing concurrent FastAPI requests flowing into PostgreSQLBackend

FastAPI with PostgreSQL: Async SQLAlchemy Guide

Build a production-aware asynchronous FastAPI API with PostgreSQL, SQLAlchemy sessions, bounded connection pools, transactions, migrations, and cleanup.

5 min read
Technical blueprint of reusable Terraform modules assembling AWS cloud infrastructureCloud & Infrastructure

Build Reusable Terraform Modules for AWS

Design reusable Terraform modules for AWS with clear boundaries, validated inputs, stable outputs, version pinning, automated tests, and safe refactoring.

6 min read
Editorial collage showing Laravel Horizon and Redis queue workers connected to an Ubuntu production serverDevOps

Laravel Horizon on Ubuntu: Redis Queue Production Guide

Run Laravel Horizon reliably on Ubuntu with Redis, Supervisor, queue balancing, safe retries, metrics, monitoring, and graceful deployments.

7 min read
Retro editorial illustration of a web app continuing to work offline through service worker cachingFrontend Development

Build an Offline-First Web App with Workbox

Build a resilient offline-first web app with Workbox using safe precaching, route-specific cache strategies, update handling, and practical testing.

5 min read
Bright operations workspace with a Kubernetes device and three status beacons for startup readiness and livenessCloud & Infrastructure

Kubernetes Probes: Startup, Readiness, Liveness

Configure Kubernetes startup, readiness, and liveness probes with honest health endpoints, measured timing, graceful shutdown, and production diagnostics.

6 min read
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