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Layer 2 of 20

Platform Runtime

Execution environment for services and apps: language runtimes, container/runtime policy, upgrade strategy, and performance envelopes.

Responsibilities

  • Standardize runtime execution for services and apps (language runtimes, containers).
  • Define upgrade and compatibility strategy (versioning, rollout, rollback).
  • Provide performance envelopes and platform invariants (timeouts, limits, caches).

Key interfaces

  • Runtime configuration surface (env/config/feature flags).
  • Build/run pipeline contract (artifacts, provenance, signatures).
  • Runtime lifecycle hooks (startup/shutdown, readiness, graceful drain).

Operational signals

These are the measurements that tell you whether this layer is healthy in production.

  • CPU/memory utilization by workload class; throttling rate.
  • Deploy success rate, rollback frequency, and MTTR by environment.
  • GC/heap pressure (where relevant) and request tail latency.

Failure modes

  • Incompatible runtime upgrades causing widespread regressions.
  • Config drift between environments.
  • Unbounded resource usage due to missing limits.

Production readiness checklist

  • Pin versions; use canary/gradual rollout with automated rollback signals.
  • Centralize config with validation and default-deny feature flags.
  • Set budgets (CPU/memory/timeouts) and enforce via policy.
Platform Runtime — HOWFAR Architecture — HOWFAR