Module rate_limits 

Structs

RateLimitSnapshot

WeightedLimiter

Functions

backoff_full_jitter

exchange_weight

Exchange: 1 + floor(batch_len / 40)

info_base_weight

Classify Info requests into weight classes based on request_type. Since InfoRequest uses struct with request_type string, we match on that.

info_extra_weight

Extra weight for heavy Info endpoints: +1 per 20 (most), +1 per 60 for candleSnapshot. We count the largest array in the response (robust to schema variants).