Today's glucose mean was held against a band built from whole days. By
mid-morning the day holds a fasting reading and nothing after, so an
ordinary morning read as "below your range". A glucose day still in
progress is now compared with the earlier days cut at the same local clock
time, read in SQL so a dense stream is averaged whole rather than through
its newest fifty rows. With fewer than seven earlier days that have
readings in those hours, today gets no verdict. The day-aggregate reader
gains the local-clock cut; an integration case pins it against the
in-memory fold in a half-hour zone.
The doctor report's pulse average and day points, the correlation channels,
the illness correlation, the personal baseline and the Coach's tiered context
each folded pulse readings into a day by plain mean. They now take the day as
the mean of its local hours' means and a window as the mean of its days, in
the zone each reader buckets by. The day aggregates carry the weighted sums for
an hourly-mean type, so every caller reads one day value. Every other type is
unchanged.
The status assessments folded their recent days, weeks, months and years on
Berlin days whatever the user's zone, the mood and cycle crosstabs keyed
their metric days in Berlin, the resting-pulse proxy defaulted to Berlin
days, the briefing's opener rotated at Berlin midnight, and every
assessment prompt labelled today's date as Berlin's. They now use the
user's zone. Rollup months and years are labelled by their UTC start,
which is how they are cut; read in a zone west of UTC the label named the
month before.
"Europe/Berlin" was written out in some eighty places. DEFAULT_TIMEZONE in
lib/tz/format is now the one definition: the second copy in mood/date-key,
DISPLAY_TIMEZONE, the Berlin-only day key helpers and the per-route copies
are gone. An in-repo lint rule rejects the literal outside lib/tz and
tests; four areas another change owns are listed as pending.
A single account syncing heart rate from a watch took the worker down
within half an hour. The status cards' graded series read the last 91
days of raw rows, bounded in time but not in rows, so a stream sampled
every minute or faster materialised six or seven figures of objects on
every refresh and the read ran into the statement timeout.
Add readDayAggregates, which folds one type into per-day sum, count, min
and max in Postgres (optionally split into age segments and filtered to
the metric's plausibility domain), and move the readers that folded raw
rows into days in memory onto it: the graded series (recent, weekly and
the cold-tier fallback, for every type), the vitals day-mean fallback
behind the personal band, the tiered context's recent days and the plan
review. Recent, weekly and monthly buckets are identical to the raw
fold; the cold-tier yearly slope now runs over day means.
On 91 days of per-minute pulse the graded series now allocates 1.6 MB
where it allocated 62 MB, while the raw read alone holds 22 MB.
A structural guard freezes the remaining untaken measurement reads in
the worker and insight directories: each must name a sparse literal
type or carry a listed reason.
Refs #1023
Marc-André Bombeck