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master bc4318ef97 Add tests for SBOM generation determinism across multiple formats 
- Created `StellaOps.TestKit.Tests` project for unit tests related to determinism.
- Implemented `DeterminismManifestTests` to validate deterministic output for canonical bytes and strings, file read/write operations, and error handling for invalid schema versions.
- Added `SbomDeterminismTests` to ensure identical inputs produce consistent SBOMs across SPDX 3.0.1 and CycloneDX 1.6/1.7 formats, including parallel execution tests.
- Updated project references in `StellaOps.Integration.Determinism` to include the new determinism testing library.
2025-12-23 18:56:12 +02:00

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Router chaos testing

Purpose

  • Validate backpressure, recovery, and cache failure behavior for the router.

Test categories

  • Load testing with spike scenarios (baseline, 10x, 50x, recovery).
  • Backpressure verification for 429 and 503 with Retry-After.
  • Recovery tests to ensure queues drain quickly.
  • Valkey failure injection with graceful fallback.

Expected behavior

  • Normal load returns 200 OK.
  • High load returns 429 with Retry-After.
  • Critical load returns 503 with Retry-After.
  • Recovery within 30 seconds, zero data loss.

Metrics

  • http_requests_total{status}
  • router_request_queue_depth
  • request_recovery_seconds

Alert cues

  • Throttle rate above 10% for 5 minutes.
  • P95 recovery time above 30 seconds.
  • Missing Retry-After headers.

CI integration

  • Runs on PRs touching router code and nightly staging runs.
  • Stores results as artifacts for audits.

Related references

  • operations/router-rate-limiting.md
  • docs/operations/router-chaos-testing-runbook.md