Is creating a Read Replica of another Read Replica supported?
A.
Only in certain regions
B.
Only with MSSQL based RDS
C.
Only for Oracle RDS types
D.
No
Explanation:
https://aws.amazon.com/rds/faqs/
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D:
Create a replica from an existing Read Replica (supported for MySQL 5.6) – You can now create a second-tier Read Replica from an existing first-tier Read Replica. By creating a second-tier Read Replica, you may be able to move some of the replication load from the master database instance to a first-tier Read Replica. Please note that a second-tier Read Replica may lag further behind the master because of additional replication latency introduced as transactions are replicated from the master to the first tier replica and then to the second-tier replica.(but it is only allowed on mySQL)
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You can now create a second-tier Read Replica from an existing first-tier Read Replica, why D?
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