Fixed-window rate-limit counters keyed by connector id. Implementations
back the manifest's rateLimit budget. The store's reach IS the budget's
reach: InMemoryRateLimitStore caps per isolate (per RUN under DO-per-run
routing); a declared cap that must hold across isolates needs
D1RateLimitStore (or an equivalent shared store).
Atomically count one call against the connector's current fixed window
and return the post-increment count. now is caller-supplied epoch ms
so stores stay clock-free.
Fixed-window rate-limit counters keyed by connector id. Implementations back the manifest's
rateLimitbudget. The store's reach IS the budget's reach: InMemoryRateLimitStore caps per isolate (per RUN under DO-per-run routing); a declared cap that must hold across isolates needs D1RateLimitStore (or an equivalent shared store).