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• itcmcgrath 8y ago
  This isn't true, but Cloud Spanner is awesome too!
  • wilhuff 8y ago
    It's probably better said that Cloud Firestore and Cloud Spanner share common infrastructure. For example, Cloud Firestore uses TrueTime to provide similarly strong consistency guarantees to Cloud Spanner (see https://cloud.google.com/spanner/docs/true-time-external-consistency https://cloud.google.com/spanner/docs/true-time-external-con...) I'm not aware of any whitepapers describing the listen feature that provides real-time updates.