The shared write bucket threw on any SQL error, so a lock on rate_limits
answered every authenticated write with 500. It is a loop cutter, not an
access check: when the bucket cannot be read the write now goes ahead with
a warn signal. The login and other auth-surface limits call the limiter
directly and still fail closed. requireAuth now passes readOverPost to the
meter, the draft-only document assist declares it, and the three chat
routes, which meter their turns with buckets of their own, declare that
instead of being counted twice.
169 of 364 mutating handlers met no rate limit, every PATCH and DELETE on
an [id] among them. The shared per-account write bucket (300 a minute,
keyed on the acting account) was called by hand in a dozen creates; it is
now charged by the identity resolvers for any POST, PUT, PATCH or DELETE,
once per request, so a route is metered by resolving its caller.
The bulk ingest routes the native client syncs through in bursts
(measurements, workouts, intake, mood and cycle bulk, nutrients, the ECG
sweep) declare writeBucket: "own" and keep their dedicated ceilings, so a
large HealthKit backfill cannot lock the person out of logging a dose. A
read-over-POST stays free.
write-rate-limit-guard fails on any mutating route that neither resolves
its caller through a metering resolver nor calls a limiter, unless it is
on a short reasoned exception list; an opt-out must be on its own reviewed
list and call its own limiter.
Marc-André Bombeck