You can use the change tracking feature of DTS to retrieve incremental data from databases in real time. This topic lists the change tracking scenarios for different types of source databases.

Note For more information about the previous and new versions of the change tracking feature, see Change tracking (previous) and Change tracking (new).
Change tracking version Topic
Previous Track data changes from ApsaraDB RDS for MySQL (previous)
Note The previous change tracking feature will no longer be available after March 31, 2020. For more information, see [Notice] ApsaraDB RDS for MySQL users will no longer be able to use the previous change tracking feature after March 31, 2020.
New Track data changes from ApsaraDB RDS for MySQL (new)