Struct AbExperiment 

pub struct AbExperiment {
    pub name: String,
    pub variants: Vec<ExperimentVariant>,
    /* private fields */
}

An A/B experiment that routes traffic between template variants.

Fields

name: String

variants: Vec<ExperimentVariant>

Implementations

impl AbExperiment

pub fn new(name: impl Into<String>, variants: Vec<ExperimentVariant>) -> Self

Create a new A/B experiment.

variants must not be empty.

Panics

Panics if variants is empty.

pub fn pick_variant(&self, rand_0_1: f64) -> usize

Select a variant index using a [0.0, 1.0) uniform random draw.

Pass a caller-supplied random value so callers can use any PRNG.

pub fn record_request(&self, idx: usize)

Record that a request was routed to variant idx.

pub fn record_success(&self, idx: usize, latency_ms: u64, quality: f64)

Record a successful response for variant idx.

pub fn metrics(&self) -> Vec<VariantMetrics>

Return a snapshot of all variant metrics.

pub fn leading_variant(&self) -> Option<usize>

Return the index of the leading variant by quality score. Returns None if no successes have been recorded.

pub fn significance(&self, a: usize, b: usize) -> Option<f64>

Two-proportion Z-test p-value between variants a and b (success rate).

Returns None if sample sizes are insufficient (< 30 per variant).

pub fn report(&self) -> ExperimentReport

Summary report for logging / monitoring.