Spanda

Homeostasis

Status: Beta — entity health/readiness/trust signals plus scheduler telemetry from recent run/sim.

Purpose

Maintain safe operating range before failures occur.

Monitored metrics

CPU, memory, battery, temperature, latency, network, storage, health, readiness, trust, sensor quality, scheduler ticks, runtime load, deadline misses, provider failures.

Language

homeostasis_policy PlatformStability {
    metric cpu_pct;
    metric memory_pct;
    metric battery_pct;
    metric scheduler_ticks;
}

Types

HomeostasisPolicy, StabilityRange, StabilityMetric, DriftSignal, CorrectionAction, StabilityReport

Examples

• Memory rising steadily → restart low-risk provider
• Temperature rising → reduce workload
• Battery degrading → re-plan mission
• Network unstable → switch transport
• Scheduler deadline misses rising → enter degraded mode

CLI

spanda homeostasis check
spanda homeostasis report

API

• REST: GET /v1/autonomy/homeostasis
• gRPC: GetAutonomyHomeostasis

See cognitive-resilience-architecture.md · platform-homeostasis.md.

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