Practical notes on backend engineering, system design, debugging, and AI-assisted development.https://example.com/https://example.com/articles/rotating-database-credentials-without-restarting-pods/https://example.com/articles/rotating-database-credentials-without-restarting-pods/A runtime credential-reload pattern using a secrets agent and app-side file watching, so rotating a database password never forces a redeploy.Mon, 29 Jun 2026 00:00:00 GMThttps://example.com/articles/designing-idempotent-apis/https://example.com/articles/designing-idempotent-apis/Strategies for ensuring safe retries in distributed systems, moving beyond simple unique keys toward explicit state-machine modeling.Wed, 20 May 2026 00:00:00 GMThttps://example.com/articles/understanding-linux-cgroups/https://example.com/articles/understanding-linux-cgroups/A hands-on introduction to the kernel primitives that make Docker and Kubernetes possible, implemented from scratch in Go.Fri, 10 Apr 2026 00:00:00 GMT