ApsaraDB for Redis provides multiple data migration solutions by using Data Transmission Service (DTS) to meet your needs for data synchronization to cloud, active geo-redundancy, disaster recovery, and data analytics.

DTS

Alibaba Cloud DTS is a real-time data streaming service that provides the data synchronization, data migration, change tracking, data integration, and data processing features with stable and secure data transmission. DTS supports full data migration and incremental data migration with minimal downtime. This ensures service availability.

Table 1. The following table describes the availability of DTS to synchronize data from or to a database that runs Redis.
ToolSupported source databaseSupported destination databaseSupported architectureSupported synchronization topology
DTS (recommended)
  • Self-managed Redis databases that run

    Redis 2.8, 3.0, 3.2, 4.0, or 5.0

  • ApsaraDB for Redis Community Edition instances that run

    Redis 4.0 or 5.0

  • ApsaraDB for Redis Enhanced Edition (Tair) instances that run

    Redis 5.0

  • ApsaraDB for Redis Community Edition instances that run

    Redis 4.0 or 5.0

  • ApsaraDB for Redis Enhanced Edition (Tair) instances that run

    Redis 5.0

Note Read/write splitting instances do not support data synchronization between ApsaraDB for Redis instances that belong to different Alibaba Cloud accounts.
  • One-way synchronization
  • Cross-account synchronization
  • Two-way synchronization
Note Only ApsaraDB for Redis Enhanced Edition (Tair) instances whose database engine version is Redis 5.0 support two-way synchronization.

Required permissions

The permissions that are required by DTS vary with synchronization scenarios. Before you configure data synchronization, you must obtain the required permissions on the source and destination databases based on the synchronization scenarios. The following table describes the required permissions.

Note For more information about how to create an account for an ApsaraDB for Redis instance and grant the required permissions to the account, see Create and manage database accounts.
Table 2.
ToolScenarioPermission on the source databasePermission on the destination database
DTS (recommended)
  • Synchronize data between ApsaraDB for Redis instances that belong to the same Alibaba Cloud account
  • Synchronize data from an ApsaraDB for Redis instance to a self-managed Redis database
Read permissionsRead and write permissions
  • Synchronize data between ApsaraDB for Redis instances that belong to different Alibaba Cloud accounts
Replication permissions
Note You cannot create an account that has replication permissions for the source instance in the cluster or read/write splitting architecture. If the destination instance is an ApsaraDB for Redis instance, you can submit a ticket to apply for the permissions.
Read and write permissions
  • Synchronize data from a self-managed Redis database to an ApsaraDB for Redis instance
  • Synchronize data between self-managed Redis databases
Permissions to run the SYNC or PSYNC commandRead and write permissions

Data synchronization solutions

Important The configuration methods for different scenarios are similar. The following table describes the solutions for general data synchronization scenarios. If your synchronization scenario is not included in the following table, you can view the topics about similar scenarios and configure the required permissions.
ScenarioToolSolution
Synchronize data from a self-managed database to an ApsaraDB for Redis instanceDTSSynchronize data from a self-managed Redis cluster to an ApsaraDB for Redis cluster instance
Synchronize data from a self-managed Redis database hosted on an ECS instance to an ApsaraDB for Redis instance
Synchronize data from a Codis cluster hosted on an ECS instance to an ApsaraDB for Redis instance
Synchronize data from a Twemproxy Redis cluster hosted on an ECS instance to an ApsaraDB for Redis instance
Synchronize data between ApsaraDB for Redis instancesDTSSynchronize data between ApsaraDB for Redis cluster instances across Alibaba Cloud accounts
Configure two-way synchronization between ApsaraDB for Redis Enhanced Edition (Tair) instances
Synchronize data between self-managed Redis databasesDTSSynchronize data from a self-managed Redis database connected over Express Connect, VPN Gateway, or SAG to a self-managed Redis database hosted on an ECS instance