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A comment on Apple open-sources FoundationDB. Parent comment

Re:Apple open-sources FoundationDB by throwaway84742 on Thursday April 19, 2018 @10:28PM (#16881724)
What do you mean by “forms”? Spanner is also layered. The bottom layer is basically a key-value store. On top of that there’s a full blown SQL layer, which, BTW can work with hierarchical records as well as flat tables. Both support transactions and guarantee global consistency.
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Re:Apple open-sources FoundationDB by wll on Friday April 20, 2018 @03:14AM (#16882752)
They may refer to FoundationDB layers. [1] While Spanner may be built on a key-value store equivalent, Google does not expose it as a service.

[1] https://apple.github.io/foundationdb/layer-concept.html

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Re:Apple open-sources FoundationDB by eropple on Friday April 20, 2018 @10:41AM (#16885128)
That's exactly what I was referring to. Thanks.
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