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David Mello

Breaker of software, geek, meme enthusiast.

I blog about quality assurance and software testing, home automation, technology reviews, and home improvement.

Latest Articles

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Test Selection: Run Fewer Tests, Catch the Same Bugs
Test Automation

Test Selection: Run Fewer Tests, Catch the Same Bugs

A framework for running fewer tests without missing real bugs, and the one prerequisite that has to be true first. StarEast 2026 lessons.
Reuse Your Playwright Tests for Load Testing
Test Automation

Reuse Your Playwright Tests for Load Testing

Reuse existing Playwright functional tests for load testing instead of building a parallel suite. My own experience, validated by a StarEast 2026 talk.
AI Performance Testing Guardrails Every Tester Needs
Test Automation

AI Performance Testing Guardrails Every Tester Needs

An AI-generated performance test missed a real bug, and the app broke in production. StarEast 2026 lessons on the guardrails that would have caught it.
Aiper Experts Duo Review: Worth the Upgrade?
Diy Home Upgrades

Aiper Experts Duo Review: Worth the Upgrade?

I replaced my Poolvergnuegen suction-side cleaner with the Aiper Experts Duo robotic pool cleaner (Scuba V3 + EcoSurfer S2). Unboxing, first-week results.
Gable Attic Fan Replacement, 3 Years Later
Diy Home Upgrades

Gable Attic Fan Replacement, 3 Years Later

Replacing a seized gable attic fan: why intake venting matters most, CentricAir vs QuietCool, and three years of real attic temperature and humidity data.
How to Improve Portable AC Efficiency, Updated
Diy Home Upgrades

How to Improve Portable AC Efficiency, Updated

Portable AC efficiency fixes ranked by cost and effort: duct insulation, the intake hose most people skip, window sealing, and when to upgrade to a mini-split.