Struct RateMeter 

#[repr(align(64))]
pub struct RateMeter { /* private fields */ }

Ultra-fast rate meter with sliding window calculations

Tracks events per second/minute/hour with minimal overhead. Cache-line aligned to prevent false sharing.

Implementations

impl RateMeter

pub fn new() -> Self

Create new rate meter with 1-second window

pub fn with_window(window: Duration) -> Self

Create rate meter with custom window size

pub fn tick(&self)

Record an event - THE FASTEST PATH

This is optimized for maximum speed:

• Single atomic increment for total
• Lazy window updates only when needed
• Branch prediction friendly

pub fn tick_n(&self, n: u32)

Record N events at once

pub fn rate(&self) -> f64

Get current rate (events per second in current window)

pub fn rate_per_second(&self) -> f64

Get rate per second

pub fn rate_per_minute(&self) -> f64

Get rate per minute

pub fn rate_per_hour(&self) -> f64

Get rate per hour

pub fn total(&self) -> u64

Get total events since creation

pub fn exceeds_rate(&self, limit: f64) -> bool

Check if rate exceeds limit

pub fn can_allow(&self, n: u32, limit: f64) -> bool

Check if we can allow N more events without exceeding limit

pub fn tick_if_under_limit(&self, limit: f64) -> bool

Rate limiting - tick only if under limit

pub fn tick_burst_if_under_limit(&self, n: u32, limit: f64) -> bool

Burst rate limiting - allow N events if under limit

pub fn reset(&self)

Reset all counters

pub fn stats(&self) -> RateStats

Get comprehensive statistics

pub fn age(&self) -> Duration

Get age since creation

pub fn is_empty(&self) -> bool

Check if rate meter is empty (no events recorded)

Trait Implementations

impl Debug for RateMeter

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

Formats the value using the given formatter.

impl Default for RateMeter

fn default() -> Self

Returns the “default value” for a type.

impl Display for RateMeter

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

Formats the value using the given formatter.

impl Send for RateMeter

impl Sync for RateMeter