# Key Characteristics:

Q: # Key Characteristics:

* **Consistency**: Uses the **Raft consensus algorithm** to guarantee strong consistency across cluster nodes. * **Single Source of Truth**: Only the `kube-apiserver` communicates directly with etcd; all other components update their state via the API server. * **Watch API**: Allows the API server to watch keys for real-time state changes, powering controller loops.

💬Answer

Consistency: Uses the Raft consensus algorithm to guarantee strong consistency across cluster nodes.
Single Source of Truth: Only the kube-apiserver communicates directly with etcd; all other components update their state via the API server.
Watch API: Allows the API server to watch keys for real-time state changes, powering controller loops.

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