Enum SpotCheck 

pub enum SpotCheck {
    Never,
    Always,
    Fraction {
        numerator: u32,
        denominator: u32,
    },
}

Policy for re-running a sampled fraction of cache hits.

A disagreement between the cached entry and the fresh run is a hard error (super::ResultCacheError::SpotCheckDivergence) — never a silent fallback to either result.

Variants

Never

Never re-run a cache hit. Tests use this to prove reuse.

Always

Re-run every cache hit. Tests use this to prove fail-closed.

Fraction

Re-run numerator / denominator of hits, chosen from the entry id.

Fields

numerator: u32

Hits sampled per denominator keys.

denominator: u32

Sampling modulus. Zero is treated as never.

Implementations

impl SpotCheck

pub fn should_sample(&self, key: &CacheKey, check_name: &str) -> bool

Whether this policy samples key / check_name.

Trait Implementations

impl Clone for SpotCheck

fn clone(&self) -> SpotCheck

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SpotCheck

impl Debug for SpotCheck

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

Formats the value using the given formatter.

impl Default for SpotCheck

fn default() -> Self

Returns the “default value” for a type.

impl Eq for SpotCheck

impl PartialEq for SpotCheck

fn eq(&self, other: &SpotCheck) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for SpotCheck