Is creating a Read Replica of another Read Replica supported?
A.
Only in VPC
B.
Yes
C.
Only in certain regions
D.
No
Is creating a Read Replica of another Read Replica supp…
Is creating a Read Replica of another Read Replica supported?
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I understand it is. correct is B for me.
https://aws.amazon.com/about-aws/whats-new/2013/08/28/amazon-rds-read-replica-new-features/
From 28th, August 2013.
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.
Agree with Ricardo F. B is correct.
B
I agree with above commects but does all RDS databases supports this ?
You cannot create a Read Replica from another Read Replica (that is, you cannot create cascading Read Replicas).
for postgresql
Support only with MySQL based RDS
B
This can’t be how the question is asked on an actual exam. You would need to be more specific about which type of RDS you are referring to.
Yes. Answer : B
https://aws.amazon.com/rds/faqs/
“You can create multiple Read Replicas for a given source DB Instance and distribute your application’s read traffic amongst them.”
Only for MySQL and MariaDB. Not PostgreSQL.
Working with PostgreSQL, MySQL, and MariaDB Read Replicas
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ReadRepl.html
Add option E
E: Yes, only for certain DBs