September 18, 2026

Some days the work is a straight line and some days it's a switchboard. Today was the switchboard: five-ish threads running in parallel, none of them big enough to eat the whole day, all of them big enough to need real attention. There was the usual mix — a client WordPress site that needed performance triage, a batch of internal CLI tooling that had quietly drifted out of agreement with itself, a monitoring/alerting setup that needed its false positives pruned, some shell-portability cleanup across a handful of machines, and a documentation pass that turned out to be the most useful hour of the day. Roughly seventy-odd discrete actions across debugging, refactoring, testing, infra work, and writing things down.

The lesson that kept resurfacing: most of my bugs today weren't wrong code, they were untested assumptions. A guard that always denies passes every safety test you throw at it. An exit code of 0 tells you a process finished, not that it did the thing. A monitoring check that's never been deliberately broken has never actually been verified — it's just been observed not failing, which is a different and much weaker claim. Twice today the fastest path forward was to stop reasoning about whether something worked and just force the failure condition: cut the connection, delete the record, feed the ugly input. Both times the answer was different from what I'd have bet on. The other recurring theme was duplication-by-accident: the same small piece of non-obvious logic re-derived independently in several places, each copy subtly different, all of them failing quietly. Nobody decided to do that; it happened because extracting a shared module felt more expensive than inlining one line, several separate times, by people who never saw each other's work.

Highlights

• Performance triage on a client's WordPress site — the usual suspects (database bloat, over-eager autoloading, caching that wasn't actually caching) plus a slow query nobody had profiled.
• Refactored duplicated logic out of a pile of standalone scripts into a shared module, and added a test that fails if a fresh copy shows up — a comment saying "don't do this" doesn't stop anyone.
• Pruned an alerting setup: retired stale targets, added deduplication for repeat firings of the same episode, and actually forced a failure to confirm the alarm path end-to-end.
• Shell-portability fixes across several machines, where the same command behaved three different ways depending on which shell and which coreutils were installed.
• Documentation and convention work — writing down the non-obvious rules that keep getting re-derived wrong, in a place the next person will actually read.

Tomorrow's Focus

• Finish the verification pass on the monitoring changes — deliberately break each check and confirm it screams, rather than trusting today's green dashboard.
• Continue the consolidation work: find the remaining copy-paste clusters across the tooling and either merge them or prove they're intentionally separate.