Controller Rollout Architecture for Stable Tenant Stack Updates

The patent segments the deployment process by introducing a super controller that manages multiple instance-scoped controllers independently. Each instance-scoped controller handles updates for specific software stack instances separately, allowing controlled rollout to subsets of instances rather than simultaneous updates across all instances. This segmentation enables monitoring and rollback capabilities at the instance level, resolving the contradiction between fast deployment and system stability.

The patent implements preliminary action by requiring the super controller to first validate and approve the new controller version before allowing instance-scoped controllers to deploy it. The system performs preliminary testing and verification at the super controller level, and only after successful validation does it coordinate the rollout to individual instances. This preliminary action prevents problematic code from affecting multiple instances simultaneously while maintaining efficient update propagation.

The patent introduces an intermediary architecture where the super controller acts as a mediator between the centralized deployment process and individual instance-scoped controllers. The super controller coordinates updates, monitors health status, and can isolate failures by preventing propagation to unaffected instances. This intermediary structure maintains centralized coordination benefits while enabling fine-grained control over update pace and failure isolation at the instance level.