Enum Distribution

pub enum Distribution {
    Histogram(Histogram),
    Summary(RollingSummary, Arc<Vec<Quantile>>, f64),
}

Distribution type.

Variants

Histogram(Histogram)

A Prometheus histogram.

Exposes “bucketed” values to Prometheus, counting the number of samples below a given threshold i.e. 100 requests faster than 20ms, 1000 requests faster than 50ms, etc.

Summary(RollingSummary, Arc<Vec<Quantile>>, f64)

A Prometheus summary.

Computes and exposes value quantiles directly to Prometheus i.e. 50% of requests were faster than 200ms, and 99% of requests were faster than 1000ms, etc.

Implementations

impl Distribution

pub fn new_histogram(buckets: &[f64]) -> Distribution

Creates a histogram distribution.

Panics

Panics if buckets is empty.

pub fn new_summary( quantiles: Arc<Vec<Quantile>>, bucket_duration: Duration, bucket_count: NonZero<u32>, ) -> Distribution

Creates a summary distribution.

pub fn record_samples(&mut self, samples: &[(f64, Instant)])

Records the given samples in the current distribution.

Trait Implementations

impl Clone for Distribution

fn clone(&self) -> Distribution

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Distribution

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

Formats the value using the given formatter.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 88 bytes

Size for each variant:

• Histogram: 72 bytes
• Summary: 88 bytes