ARC 5Own Runtime OperationsChapters 19–22

Arc 5 Recap — Turn Operating Responsibilities into Contracts (Chapters 19–22)

Observability, security, lifecycle, and capacity together form DSM's operating responsibility and directly affect fault detection, isolation, and recovery.

Four operating contracts

Contract Useful question Dangerous substitute
Observability Which identity/locator/origin/reason differs? "Sync looks wrong; restart it."
Security Which admission/authentication/encryption/replay/abuse gate rejected? "Security is enabled."
Lifecycle Which state accepts traffic; when does registry freeze and close? "Spring Context is up."
Capacity Which fixture, environment, and parameters support this trend? "The laptop produced a large number."

How this arc realizes DSM's value

Shared diagnostics, metrics, traces, security gates, and lifecycle reduce repeated platform work across services. Comparable benchmarks identify hot-path regressions. Each target environment still owns alert thresholds, key custody, traffic drain, and production capacity.

A pre-release path

  1. Check RUNNING state, collection registration, and readiness.
  2. Verify that diagnostics, metrics, and traces can locate membership/delta/repair/consumer differences.
  3. Validate token, signature, encryption policy, nonce, abuse limit, and audit outcomes.
  4. Rehearse readiness removal, drain, Runtime close, and incomplete-action records.
  5. Run the target microbenchmark under a pinned revision/environment, retain JSON, and keep smoke separate from SLA.

Still unproven

  • Observation backend, thresholds, and on-call process work during a real incident.
  • Key custody, production rotation, and audit retention satisfy organizational requirements.
  • Deployment automation drains real traffic and recovers from forced termination.
  • Microbenchmarks represent production networking, peak repair, and business workload.

These gaps become inputs to the Arc 6 E4 lab and final release decision.

Next

Arc 6 adds independent-process/real-port evidence with a Redis-shaped black box, then addresses Federation, alternatives, and the capstone.