DNS key-value store
DNSKV is a generic public key-value service: names identify keys and DNS answers return values, backed by caches distributed across recursive resolvers.

DNSKV exposes a generic key-value interface through DNS names and answers. The talk highlights how recursive caches around the world can make repeated lookups fast and resilient.
Public DNS is not private storage: query data and answers pass through resolvers, and caching affects when updates become visible.
Primary source: https://dnskv.com/