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How to set up migration for CVM? Many novices are not very clear about this. In order to help you solve this problem, the following editor will explain it in detail. People with this need can come and learn. I hope you can gain something.

You can use data transfer DTS to migrate data from self-built Redis instances to cloud Redis. Data migration from self-built Redis instances to CVM Redis supports incremental data synchronization, which can smoothly complete Redis data migration when local applications are constantly writing, and can support full data migration plus incremental data migration.

Limitations of migration through DTS

For invoking Lua scripts through EVAL or EVALSHA, DTS cannot guarantee the successful execution of this type of script because the target side does not explicitly return the execution result when executing the script during incremental data migration.

For the List list in Redis, when DTS calls sync or psync for retransmission, it will not Flush the data already in the destination side, which may lead to duplicate data.

Full data migration

DTS migrates all the existing Key in the self-built Redis to the Ali CVM Redis instance.

Incremental data migration

Incremental data migration will synchronize the updated key of self-built Redis instances to Aliyun Redis instances during the migration process. Finally, self-built Redis and cloud Redis instances enter the process of dynamic data replication. Through incremental data migration, you can smoothly complete the data migration of self-built Redis instances-cloud Redis instances while providing services normally.

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