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Multi-Region Federation System (Sync, Replication, Routing, Dashboard)

Module

ReleaseOrchestrator

Status

IMPLEMENTED

Description

Federation hub for geographically distributed deployments: cross-region data sync with vector clock-based conflict resolution (KeepLocal/KeepRemote/Merge/LastWriteWins), global promotion orchestration (Sequential/Canary/Parallel/BlueGreen strategies), evidence replication with data residency compliance (GDPR/sovereignty), latency-based region routing with automatic probing, and global dashboard with cross-region visibility, alert management, and sync status.

Implementation Details

  • Modules: src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Federation/
  • Key Classes:
    • FederationHub (src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Federation/FederationHub.cs) - background service coordinating cross-region federation
    • CrossRegionSync (src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Federation/CrossRegionSync.cs) - data synchronization across regions with vector clock conflict resolution
    • RegionCoordinator (src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Federation/RegionCoordinator.cs) - orchestrates global promotions (Sequential/Canary/Parallel/BlueGreen strategies)
    • GlobalDashboard (src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Federation/GlobalDashboard.cs) - cross-region visibility, alert management, and sync status
  • Interfaces: ICrossRegionSync, IRegionCoordinator, IGlobalDashboard
  • Source: SPRINT_20260117_036

E2E Test Plan

  • Start FederationHub and verify it discovers and connects to remote regions
  • Sync data across two regions via CrossRegionSync and verify conflict resolution (KeepLocal, LastWriteWins)
  • Trigger a global promotion via RegionCoordinator with Sequential strategy and verify region-by-region rollout
  • Verify data residency: sync evidence and confirm GDPR-compliant data stays within designated regions
  • Query GlobalDashboard for cross-region sync status and verify visibility across all regions
  • Verify latency-based routing: probe regions and confirm routing decisions match latency measurements