Goten Flow Implementation

All components for described flows are implemented in the Goten repository, we have several places where implementation can be found:

• In runtime/schema-mixin we have a mixin service directory, which must be part of all services using Goten.
• In runtime/store/constraint we have another “middleware” for Store, which is aware of cross-service & regional nature of schemas. This middleware must be used in all.
• In runtime/db_constraint_ctrl we have a controller that handles asynchronous schema-related tasks like asynchronous cascade deletions, meta owner references management, etc.
• In runtime/db_syncing_ctrl we have a controller that handles all tasks related to DB syncing: Cross-region syncing, metadata.syncing updates, database upgrades, and search database syncing as well.