Enum CompositionError 

pub enum CompositionError {
    BothLayersFailed {
        l1: BackendError,
        l2: BackendError,
    },
}

Error type for composition backend operations.

This error type preserves errors from both cache layers for debugging, while keeping the implementation details encapsulated.

Variants

BothLayersFailed

Both L1 and L2 cache layers failed.

Fields

l1: BackendError

Error from L1 layer

l2: BackendError

Error from L2 layer

Trait Implementations

impl Debug for CompositionError

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

Formats the value using the given formatter.

impl Display for CompositionError

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

Formats the value using the given formatter.

impl Error for CompositionError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.