Struct SlidingWindowRate 

pub struct SlidingWindowRate { /* private fields */ }

O(1) sliding window rate counter.

Counts events in a sliding time window using sub-windows. More accurate than token bucket for bursty traffic.

Implementations

impl SlidingWindowRate

pub fn new(window_us: u64, limit: u64) -> Self

Create with window duration (us) and rate limit

pub fn per_second(limit: u64) -> Self

Create for 1 second window with limit

pub fn per_minute(limit: u64) -> Self

Create for 1 minute window with limit

pub fn record(&mut self, now_us: u64) -> bool

Record event, returns true if within limit

pub fn count(&self) -> u64

Get current count across all windows

pub fn rate_percentage(&self) -> f64

Get current rate as percentage of limit

pub fn would_exceed(&self) -> bool

Check if rate limit would be exceeded

pub fn exceeded(&self) -> u64

Get exceeded count

pub fn reset(&mut self)

Reset all windows

pub fn update_with_time(&mut self, now_us: u64)

Update with current time (for testing)

Trait Implementations

impl Clone for SlidingWindowRate

fn clone(&self) -> SlidingWindowRate

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SlidingWindowRate

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SlidingWindowRate

fn default() -> Self

Returns the “default value” for a type.