- the AI-state cases take their baseline in a world of their own
instead of from the S0 case;
- the live-window case drops a rollup tier the rollup case built;
- the job readers start each case on an empty queue, and the
no-schema case starts pg-boss again after it;
- the server move case reseeds the server it emptied;
- the extremes cases rebuild the tier one of them breaks on purpose;
- the first Google Health backfill seeds its own history;
- the batch budget warms the process caches as the reads do;
- the HOT-update count is read as a difference: since Postgres 15 the
transaction view also shows an earlier transaction's unflushed counts;
- the MANAGE matrix checks its effect set after all cases rather than
in a case of its own that a shuffle could run first.
The summaries slice and the comprehensive aggregator took their JS windows
(the DAY-bucket bounds, the rollup slope anchors, lastSeen staleness) from
the process clock and their SQL windows (avg7, avg30, the month before, the
median, the 90-day canonical pick, the cold-path slope evidence) from
NOW(), the database's clock. One response mixed two clocks, so a reading
on a window's edge fell in or out with whichever host answered, and with
the process clock pinned the analytics parity walk changed its avg7 with
the hour it ran at.
Each read now takes one `now` and binds it into its statements
(`request-clock-sql.ts`): `$N::timestamp`, which keeps the driver's
offset-free UTC string as written in any session zone. The canonical-pick
helper takes its window as an instant plus an interval instead of reading
NOW(); the series and calendar readers anchor it on their own `since`, the
BP-in-target read on its 365-day start. The window-mean and live-slope
columns the two aggregates each spelled out now come from one builder.
The streak's local day series read its bounds through `::timestamptz`,
which follows the session zone: outside a UTC session today's reading fell
out of the streak. It reads them as UTC first.
The parity walks for analytics, the dashboard summary and the
comprehensive overview pin a fixed day instead of today: their records are
laid out from the anchor day, so the chronotype's work and free nights and
the weight-by-weekday points moved with the weekday the walk ran on. The
snapshots are unchanged. A new suite pins the clock to four times of day,
far from the database clock, with readings ten minutes either side of
every edge, on both read paths, in a UTC and an Auckland session.
Marc-André Bombeck