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Marc-André Bombeck
5a0b6ee153
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