Struct Histogram 

pub struct Histogram {
    pub name: &'static str,
    pub help: &'static str,
    /* private fields */
}

Thread-safe latency histogram.

Fields

name: &'static str

Name used for Prometheus export

help: &'static str

Help text for Prometheus export

Implementations

impl Histogram

pub fn new(name: &'static str, help: &'static str) -> Self

pub fn observe(&self, value_us: u64)

Record a latency observation in microseconds.

pub fn reset(&self)

Reset all histogram data.

pub fn export_prometheus(&self, out: &mut String)

Export Prometheus histogram lines.

pub fn snapshot(&self) -> (u64, u64)

Return (sum_us, count) snapshot.

pub fn bucket_snapshot(&self) -> ([u64; 12], u64)

Return bucket counts (excluding +Inf) and total count.