Interface: RelationCacheErrorContext

Structured context attached to every runtime relation-cache operational failure (ADR-009). Identifies the model whose error handler is consulted, plus the relation / lookup key / eviction tag the failing operation concerned.

Properties

Property	Type	Description
key?	string | null	The cache lookup key, when applicable.
model	string	Canonical identity name of the model involved (the declaring model on reads/writes, the target on evictions).
relation?	string	The relation name, when the failure is tied to a specific relation load.
tag?	string | null	The eviction tag, when applicable.
value?	unknown	The value that caused the failure, when one exists: the snapshot being written (E_RELATION_CACHE_WRITE_FAILED) or the cached snapshot that failed to rehydrate (E_RELATION_CACHE_REHYDRATION_FAILED). Absent for read / resolution / eviction failures, which have no causing payload.