Struct TailStabilityTracker 

pub struct TailStabilityTracker { /* private fields */ }

Tracker for tail latency stability.

Maintains a baseline and a sliding window of recent samples, detecting distribution shifts based on p99 changes.

Implementations

impl TailStabilityTracker

pub fn new() -> Self

Create a new tracker with default config.

pub fn with_config(config: TailStabilityConfig) -> Self

Create a tracker with custom config.

pub fn record(&mut self, value: f64)

Record a new latency sample.

pub fn force_lock_baseline(&mut self)

Force lock the baseline with current samples (even if not full).

pub fn window_p99(&self) -> Option<f64>

Get the current window p99.

pub fn baseline_p99(&self) -> Option<f64>

Get the baseline p99.

pub fn has_shift(&self) -> bool

Check if there is a distribution shift (regression).

pub fn p99_ratio(&self) -> Option<f64>

Get the current p99 ratio (window / baseline).

pub fn status(&self) -> TailStabilityStatus

Get status of the tracker.

pub fn reset(&mut self)

Reset the tracker.

pub fn baseline_count(&self) -> usize

Number of samples in baseline.

pub fn window_count(&self) -> usize

Number of samples in window.

pub fn is_baseline_locked(&self) -> bool

Whether baseline is locked.

Trait Implementations

impl Clone for TailStabilityTracker

fn clone(&self) -> TailStabilityTracker

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TailStabilityTracker

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

Formats the value using the given formatter.

impl Default for TailStabilityTracker

fn default() -> Self

Returns the “default value” for a type.