Quorum

The article proposes a Raft variant using finite projective planes to form small, intersecting quorums (blocs) so progress can occur with fewer than a majority; it illustrates with a 7-node Fano-plane example and analyzes probabilistic trade-offs and open questions.

Jepsen finds NATS JetStream 2.12.1 can lose committed writes and exhibit persistent split-brain under faults, largely due to lazy fsync and on-disk file corruption, with prior related issues fixed in 2.10.23.