Control-Plane Compatibility

Astra exposes etcd-compatible gRPC surfaces for control-plane critical operations, including:

• KV service: Range, Put, DeleteRange, Txn, Compact.
• Watch service: streaming watch create/cancel/progress.
• Lease service: grant, revoke, keepalive, TTL, list.

Compatibility Model

• Goal: production-safe compatibility for Kubernetes/Omni style control-plane usage.
• Non-goal: strict byte-for-byte parity for every historical etcd edge behavior.
• Contract: prioritize correctness, consistency, and liveness under constrained I/O.

Operational Expectation

When migrating clients from etcd to Astra:

• Use validation harnesses to confirm workload-specific parity.
• Treat behavior outside validated scenario scope as compatibility testing candidates.