March 2019
Beginner to intermediate
778 pages
34h 20m
English
Content preview from Building Google Cloud Platform Solutions
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Entity group
As mentioned earlier, each entity in Datastore is part of an entity group. Bigtable tracks the entity group of each entity as the key of the entity's highest ancestor. When performing transactions on an entity, all rows with the same Entity Group Key will be locked by Datastore until that transaction is fully propagated throughout the system. This is fundamental to how Datastore provides consistency guarantees within a given entity group.
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