Architecture Overview

Astra runtime composition:

• astrad service process for API, auth, tenancy, and raft runtime wiring.
• astra-core modules for config, raft/storage, watch, metrics, memory, tiering, and IO controls.
• astra-proto for etcd-compatible and Astra-specific gRPC contracts.

Core Subsystems

• Request ingress and auth interceptors.
• Write and read execution paths.
• Raft transport and state machine.
• Watch fanout ring.
• Tiering and recovery manifests.
• Metrics and runtime adaptation controls.