pub const MICROS_PER_TOKEN: u64 = 1_000_000;Expand description
Micro-tokens to one token: the resolution the bucket stores its rate, burst and balance in.
A millionth of a token per second is the smallest positive rate the bucket
holds. A micro-token count fits a u64 up to about 1.8e13 tokens, which
is a larger burst than any quota window of a 64-bit byte rate reaches in
practice, and every larger value saturates.