Data Replication

DCS Redis standard version active/standby and cluster version active/standby instances support the deployment of HA instances. You can choose to deploy instances in a single AZ or multiple AZs. When the tenant chooses a cross-AZ instance, the Redis instance establishes and maintains Redis synchronous replication. In the event of an active node fault, the DCS instance automatically promotes the standby node to the active node to achieve HA. If the tenant mostly uses the DCS instance to read the business data, they can choose an active/standby cluster instance, because the DCS instance actively maintains data synchronization and replication between the active node and the standby node.