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Yes, Aurora backtrack is the solution for the delayed replication however the limit for a backtrack window is 72 hours. Also, there are other limitation.
Backtrack Demonstration: https://www.youtube.com/watch?v=20xXnoQA2j4&feature=youtu.be&t=1468
The RDS MySQL the replication uses the traditional binary log MySQL replication between the MASTER and Read Replicas.
However, in Amazon Aurora replicas share the same underlying storage as the source instance and replication happens on the storage layer (Without binary logs). For a write to be considered durable in Aurora, the primary instance (“master”) sends a redo stream to six storage nodes, two in each availability zone for the storage volume, and waits until four of the six nodes have responded.
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