Struct BackendLabel 

pub struct BackendLabel(/* private fields */);

A label identifying a cache backend.

Used for:

• Backend identification in Backend::label()
• Response source tracking in ResponseSource::Backend
• Metrics labels for composed backends (e.g., “composition.moka”)

Example

use hitbox_core::BackendLabel;

let label = BackendLabel::new("moka");
let composed = label.compose(&BackendLabel::new("inner"));
assert_eq!(composed.as_str(), "moka.inner");

Implementations

impl BackendLabel

pub fn new(s: impl Into<SmolStr>) -> Self

Creates a new backend label.

pub const fn new_static(s: &'static str) -> Self

Creates a backend label from a static string (no allocation).

pub fn as_str(&self) -> &str

Returns the label as a string slice.

pub fn as_smol_str(&self) -> &SmolStr

Returns a reference to the inner SmolStr.

pub fn compose(&self, other: &BackendLabel) -> Self

Composes two labels with a dot separator: “self.other”.

Used for hierarchical naming in composition backends, e.g., “composition.moka” or “outer.inner.redis”.

Trait Implementations

impl AsRef<str> for BackendLabel

fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for BackendLabel

fn clone(&self) -> BackendLabel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BackendLabel

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

Formats the value using the given formatter.

impl Default for BackendLabel

fn default() -> BackendLabel

Returns the “default value” for a type.

impl Display for BackendLabel

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

Formats the value using the given formatter.

impl From<&str> for BackendLabel

fn from(s: &str) -> Self

Converts to this type from the input type.

impl From<SmolStr> for BackendLabel

fn from(s: SmolStr) -> Self

Converts to this type from the input type.

impl From<String> for BackendLabel

fn from(s: String) -> Self

Converts to this type from the input type.

impl Hash for BackendLabel

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 BackendLabel

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for BackendLabel

impl StructuralPartialEq for BackendLabel