Consistency Model

Astra follows strict CP semantics:

• Writes commit through Raft quorum.
• Compaction is revision-aware.
• Partition behavior preserves consistency over availability for conflicting writes.

Key Guarantees

• Monotonic revisions across committed operations.
• Lease and lock lanes protected by semantic QoS under pressure.
• No local-only write acknowledgment that bypasses quorum.

Client Guidance

• Use revision-aware reads when your control-plane logic requires explicit ordering.
• Treat compaction errors as expected signals to refresh stale read windows.