As promised, I have made RFD 508 ("Whither CockroachDB?")[0] public -- along with RFD 53[1] and RFD 110[2], which explain the problem we are trying to solve and our rationale for CockroachDB, respectively.

[0] https://rfd.shared.oxide.computer/rfd/0508

[1] https://rfd.shared.oxide.computer/rfd/0053

[2] https://rfd.shared.oxide.computer/rfd/0110