The targets page read a year of raw glucose readings to keep the newest
one per meal context, and thirty days of raw heart rate to derive one
resting figure per day. A sensor reporting every five minutes puts
105 000 glucose readings in that year and a watch recording once a
minute puts 43 000 heart-rate readings in the month, and the page is
read on every visit from the web and the app.
Glucose now reads one row per context (DISTINCT ON) for the newest
value and one row per context and local day for the thirty-day mean
and the consistency strip; the strip takes day sums directly through
rollupConsistencyFromDays. Heart rate reaches the resting-pulse card
through readRestingPulseProxy, the SQL fold the insights page already
uses, merged per day with the native resting rows exactly as before.
The cards are unchanged: the integration test rebuilds them from the
raw readings through the in-memory folds and compares.
Marc-André Bombeck