Multi-Region

Thermocline includes region-aware components in coordinator/controller code paths.

Current Implementation Surfaces

• Coordinator region routing/topology modules:
  • services/coordinator/internal/region/region.go
  • services/coordinator/internal/region/read_routing.go
• Controller DR + restore/backup region workflows:
  • services/controller/internal/dr/dr.go
  • services/controller/internal/restore/restore.go
  • services/controller/internal/backup/backup.go

Deployment Reality

For v1.0, treat multi-region as an advanced deployment capability requiring explicit validation in your own topology and failure model.

Recommendation

• Validate failover and data consistency with DR drills.
• Validate route correctness under regional outages.
• Keep runbooks for promotion/failback procedures.