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Tag: Lighthouse

3 posts

Posts
Industrial pipes and valves in a mechanical room

Pooling Playwright browsers across FastAPI scans

A persistent Chromium instance with idle-timeout shutdown eliminates per-scan browser launch while isolating cookies via fresh contexts.

2 min read
A row of stamped-red boarding passes lined up on a counter

Eight Failed Deploys to Ship FastAPI + Playwright on Railway

Eight red deploys in a row shipping a Python audit service to Railway: uv grabbing Python 3.14, /root perms, Playwright browser paths, and a glob that broke.

4 min read
Two pairs of almost-identical shoes resting side by side on a bench

The Parity Harness That Caught a Silently Broken Service

I wrote a parity harness to de-risk a Node to Python scan service port. It caught the existing Node service silently returning perf=0 on every URL.

3 min read