pub struct PlanCacheStats { /* private fields */ }Expand description
查询计划缓存统计
原子计数器无锁统计命中/未命中/淘汰次数。
Implementations§
Source§impl PlanCacheStats
impl PlanCacheStats
pub fn parse_hits(&self) -> u64
pub fn parse_misses(&self) -> u64
pub fn optimize_hits(&self) -> u64
pub fn optimize_misses(&self) -> u64
pub fn evictions(&self) -> u64
Sourcepub fn parse_hit_rate(&self) -> f64
pub fn parse_hit_rate(&self) -> f64
解析缓存命中率（0.0 ~ 1.0）
Sourcepub fn optimize_hit_rate(&self) -> f64
pub fn optimize_hit_rate(&self) -> f64
优化缓存命中率（0.0 ~ 1.0）
Trait Implementations§
Auto Trait Implementations§
impl !Freeze for PlanCacheStats
impl RefUnwindSafe for PlanCacheStats
impl Send for PlanCacheStats
impl Sync for PlanCacheStats
impl Unpin for PlanCacheStats
impl UnsafeUnpin for PlanCacheStats
impl UnwindSafe for PlanCacheStats
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
Source§fn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
Converts
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
Converts
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read more