ReadonlyactionReadonlyageReadonlyauthorizationReadonlycompletenessReadonlyfreshnessReadonlykindReadonlyobservedReadonlypolicyReadonlyqueryReadonlyreasonReadonlyregionRegion manifest identity. Binds this answer to one snapshot.
ReadonlyresourcesExactly which stored resources answered this read.
ReadonlystaleReadonlystateReadonlyversion
What the persistent cache did, and why.
regionIdis the region manifest's own content digest, so anything served from storage is traceable to the exact snapshot identity that produced it.