Read Replica

RDS read replicas is the most technique that be used to improve read performance. If we create read replica within same region , the charge is free.

To Know:

• we can replicate the DB across AZ and Region or within AZ.

• the read data from replica is eventual consistency.

• Applications must update the connection string to leverage read replica

Usecase

• You want to run a reporting application to run some analytics and product application taking on normal load on DB.