Documentation

Rate represents token bucket parameters.

mkRate creates a Rate given the burst amount, and the number of operations (must be > 0) to allow per number of seconds given.

infRate creates a Rate whose limit can never be exceeded. Useful to never limit an operation.

newTokenBucket creates an initially full token bucket.

'tryAllocate tb amount rate' attempts to allocate amount tokens from the given token bucket at the given rate. On success, it returns Nothing, and on failure it returns the minimum amount of time to wait in nanoseconds before the allocation can succeed.