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by mike_hearn 1088 days ago
It supports atomic ops and snapshot reads. Don't remember about conflict ranges. It doesn't require all backends to be identical, it supports a kind of graceful degradation when backends don't have all the features. The creator is quite keen on FDB and made sure Permazen works well with it.

Yes multiple FDB clusters. IIRC FDB replication doesn't support full geo-replication, or didn't. There's a post by me about it somewhere on their forums.