The Lab · Written in the open · Tagged Debugging

Lab.

Working notes from the studio. The tools I build, the workflows I keep, the mistakes I paid for.

3 entries · latest 2026-10-03

Latest entry

RAXXO Studios 2026-10-03 9 min read

git bisect run on 1,000 Commits: 10 Runs and 3 Wrong Answers

I planted a bug in a 1,000-commit repo. git bisect run found it in 10 runs, after three bad test scripts sent it to the wrong commit first.

git bisect run found a planted bug in 1,000 commits with 10 test runs, a linear walk needed 389
A test file that only existed in newer commits made bisect blame commit 2 instead of 613
Without exit code 125, 41 broken builds made it blame commit 560; with it, 17 runs found 613

All entries · Debugging

2026-07-12 9 min read

Reconstruct the timeline from prod logs before touching code

2026-06-08 10 min read

Retry storms turned 1 timeout into 340 duplicate calls billed in 90 seconds