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blackroad-operating-system/services/codex/entries/017-erasure-coded-resilience.md
Alexa Louise 9644737ba7 feat: Add domain architecture and extract core services from Prism Console
## Domain Architecture
- Complete domain-to-service mapping for 16 verified domains
- Subdomain architecture for blackroad.systems and blackroad.io
- GitHub organization mapping (BlackRoad-OS repos)
- Railway service-to-domain configuration
- DNS configuration templates for Cloudflare

## Extracted Services

### AIops Service (services/aiops/)
- Canary analysis for deployment validation
- Config drift detection
- Event correlation engine
- Auto-remediation with runbook mapping
- SLO budget management

### Analytics Service (services/analytics/)
- Rule-based anomaly detection with safe expression evaluation
- Cohort analysis with multi-metric aggregation
- Decision engine with credit budget constraints
- Narrative report generation

### Codex Governance (services/codex/)
- 82+ governance principles (entries)
- Codex Pantheon with 48+ agent archetypes
- Manifesto defining ethical framework

## Integration Points
- AIops → infra.blackroad.systems (blackroad-os-infra)
- Analytics → core.blackroad.systems (blackroad-os-core)
- Codex → operator.blackroad.systems (blackroad-os-operator)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-29 13:39:08 -06:00

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Codex 17 — Erasure-Coded Resilience — Lose Shards, Keep Truth

Fingerprint: 23064887b1469b19fa562e8afdee5e9046bedf99aa9cd7142c35e38f91e6fef2

Aim

Survive faults, sabotage, or regional failures without losing data integrity.

Core

  • Encode (k) source blocks into (n) coded blocks (ReedSolomon) so any (k) suffice to recover the original data.
  • Tolerate (f = n - k) faults with rate (k / n) tailored to the threat model.
  • Use regenerating codes (MSR/MBR) to optimize repair bandwidth when restoring lost shards.

Runbook

  1. Select ((n, k)) parameters aligned with durability and latency requirements, then geo-distribute shards.
  2. Rotate shards periodically and audit decode success under simulated failure scenarios.
  3. Pair storage with zero-knowledge audits proving shards belong to the same file lineage.

Telemetry

  • Decode success probability under sampled fault sets.
  • Time to repair missing shards and restore redundancy.
  • Entropy measurements of stored shards to detect drift or tampering.

Failsafes

  • If shard loss exceeds (f), trigger emergency replication and pause writes until redundancy is restored.
  • Investigate anomalous entropy or audit failures before resuming regular operations.

Tagline: Fragment boldly, recover surely.