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GUIONARDO FURLAN / PERSONAL SPACE

Ideas, code
and what comes next.

A place to share what I learn, showcase what I build and connect the next projects.

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01 — CONNECTIONS

Ideas in writing.

Articles, lessons and reflections on development.

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From problem to solution.

Projects and work: context, decisions and outcomes.

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Code at work.

The starting point for tools and products I develop.

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Latest articles

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October 26, 2026

Reverse-engineering a UPS: from a Debian package to Home Assistant

How a proprietary Ragtech UPS monitor became an open project with a documented protocol, CLI and NUT integration.

October 20, 2026

From stack trace to pull request: the fix loop with an AI agent

How I expose production errors as JSON for an AI agent (and still keep a human approving the PR).

September 20, 2026

Backup does not mean Disaster Recovery

Having backups is not the same as having Disaster Recovery: what real restores revealed about the control plane, PersistentVolumes, OCI images, and offline recovery.