Implements a basic token-bucket-based rate limiter. Users of the throttle
must successfully call try_take
before doing work.
val create_exn : now:Time_ns.t ‑> burst_size:Core_kernel__.Import.int ‑> sustained_rate_per_sec:Core_kernel__.Import.float ‑> ?initial_bucket_level:Core_kernel__.Import.int ‑> Core_kernel__.Import.unit ‑> t
val try_take : t ‑> now:Time_ns.t ‑> Core_kernel__.Import.int ‑> Try_take_result.t