design: cluster control plane (Raft) + membership (SWIM+Lifeguard) (closes #73, closes #74)#198
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…loses #73, closes #74) CONTROL_PLANE.md (#73): a 3-5 voter Raft group owning the authoritative slot map + config epoch + membership + replica promotion; data nodes as learners; CLUSTER SLOTS/SHARDS as a committed-epoch projection; config only through Raft; Jepsen/ Elle 21-failure-class acceptance. MEMBERSHIP.md (#74): SWIM + non-optional Lifeguard data-plane membership/failure detection behind a Membership trait; LAN/WAN profiles; health joined with the Raft-committed map, monotonic under suspicion; SWIM-proposes/Raft-commits handshake. Authored+reviewed via workflow. CI passes. Closes #73, closes #74. Signed-off-by: Zeke <ezequiel.lares@outlook.com>
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Wave-3 M1 specs (co-authored: they specify the coordination handshake together). Authored + adversarially reviewed via workflow.
CONTROL_PLANE.md (#73): a 3-5 voter Raft group owning the authoritative slot map + config epoch + membership + replica promotion; data nodes are learners; CLUSTER SLOTS/SHARDS is a committed-epoch projection; config changes go only through Raft; Jepsen/Elle 21-failure-class acceptance.
MEMBERSHIP.md (#74): SWIM + non-optional Lifeguard data-plane membership/failure detection behind a Membership trait; LAN/WAN profiles; health joined with the Raft-committed map, monotonic under suspicion; the SWIM-proposes / Raft-commits handshake.
CI passes. Closes #73, closes #74.
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