Unidirectional mode replicates data in one direction only, from Master to Replica, and is used for active-passive deployments such as disaster recovery.Unidirectional mode replicates data in one direction only, from Master to Replica, and is used for active-passive deployments such as disaster recovery.Bidirectional mode replicates data in two directions, from Master to Replica and from Replica to Master, and is used for active-active deployments where updates from more than one region should be incorporated into the Master cache's authoritative data set.Unidirectional Replication | Bidirectional Replication |
Active-Passive deployment | Active-Active deployment |
The Master cache replicates cache element modifications to the Replica caches | Both Master and Replica caches replicate cache element modifications |
Replica caches operate locally but do not replicate cache element modifications | The Master cache receives replications from the Replica caches |
The Master cache maintains the authoritative data set but no element tracking is necessary | The Master cache tracks each cache element and maintains the authoritative data set |
No conflict resolution necessary | Conflict resolution (localized updates recommended) |
Example use case: disaster recovery | Example use case: regional operations |