Enum CacheMissReason 

pub enum CacheMissReason {
    InvalidEnvelope,
    TypeMismatch,
    VersionTooNew,
    BodyError,
}

Why a cache entry could not be decoded into the expected type.

Carried by CacheDecode::Miss so backends can emit targeted metrics (e.g. distinguish “evicting due to a stale format” from “type collision”) without re-parsing. Every reason maps to the same behavior — recompute via the loader — so callers that don’t care can ignore it.

Variants

InvalidEnvelope

Absent or wrong magic, unknown envelope_version, truncated framing, or a non-utf8 type_id. Typically an entry written by a pre-stabilization or otherwise foreign build.

TypeMismatch

Well-formed envelope, but its type_id names a different entry type than the codec reading it.

VersionTooNew

Written by a newer build whose type_version this build does not understand and must not attempt to interpret.

BodyError

Envelope validated, but the body failed to decode (truncation, a malformed protobuf header, an IPC error, etc.).

Trait Implementations

impl Clone for CacheMissReason

fn clone(&self) -> CacheMissReason

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CacheMissReason

impl Debug for CacheMissReason

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

Formats the value using the given formatter.

impl Eq for CacheMissReason

impl PartialEq for CacheMissReason

fn eq(&self, other: &CacheMissReason) -> 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 StructuralPartialEq for CacheMissReason