Struct CacheKey 

pub struct CacheKey {
    pub table: String,
    pub kind: CacheKeyKind,
    pub identifier: String,
}

统一缓存键

通过 table + kind + identifier 三元组唯一标识一个缓存项：

• table：表名（用于表级失效）
• kind：缓存类型（ByPk / ByQuery / ByRelation）
• identifier：具体标识（pk 值 / 查询哈希 / 关联键）

Fields

table: String

表名

kind: CacheKeyKind

缓存类型

identifier: String

具体标识

Implementations

impl CacheKey

pub fn by_pk(table: impl Into<String>, pk: impl Display) -> Self

构造主键维度的缓存键

pub fn by_query(table: impl Into<String>, query_hash: impl Display) -> Self

构造查询维度的缓存键（identifier 通常是 SQL + params 的哈希）

pub fn by_relation(table: impl Into<String>, relation: impl Display) -> Self

构造关联维度的缓存键

pub fn to_string_key(&self) -> String

序列化为字符串（用于底层存储键）

Trait Implementations

impl Clone for CacheKey

fn clone(&self) -> CacheKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CacheKey

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

Formats the value using the given formatter.

impl Display for CacheKey

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

Formats the value using the given formatter.

impl Eq for CacheKey

impl Hash for CacheKey

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for CacheKey

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for CacheKey