Struct TelemetryMetrics 

pub struct TelemetryMetrics { /* private fields */ }

遥测指标计数器（无锁原子操作）

Implementations

impl TelemetryMetrics

pub fn new() -> Self

创建零值指标计数器

pub fn record_query(&self, duration: Duration, rows: u64)

记录一次查询

pub fn record_query_error(&self)

记录一次查询错误

pub fn record_pool_acquire(&self, duration: Duration)

记录一次连接获取

pub fn record_prewarm_success(&self)

v3.2.0：记录预热成功

pub fn record_prewarm_failure(&self)

v3.2.0：记录预热失败

pub fn record_prewarm_duration(&self, duration: Duration)

v3.2.0：记录预热耗时

pub fn snapshot(&self) -> TelemetryMetricsSnapshot

获取指标快照

Trait Implementations

impl Debug for TelemetryMetrics

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

Formats the value using the given formatter.

impl Default for TelemetryMetrics

fn default() -> TelemetryMetrics

Returns the “default value” for a type.