AWS 2021 RDS Lab 3 Create RDS Read Replica, All Concepts

Amazon RDS Read Replicas

Amazon RDS Read Replicas provide enhanced performance and durability for RDS database (DB) instances. They make it easy to elastically scale out beyond the capacity constraints of a single DB instance for read-heavy database workloads. You can create one or more replicas of a given source DB Instance and serve high-volume application read traffic from multiple copies of your data, thereby increasing aggregate read throughput. Read replicas can also be promoted when needed to become standalone DB instances. Read replicas are available in Amazon RDS for MySQL, MariaDB, PostgreSQL, Oracle, and SQL Server as well as Amazon Aurora.

For the MySQL, MariaDB, PostgreSQL, Oracle, and SQL Server database engines, Amazon RDS creates a second DB instance using a snapshot of the source DB instance. It then uses the engines' native asynchronous replication to update the read replica whenever there is a change to the source DB instance. The read replica operates as a DB instance that allows only read-only connections; applications can connect to a read replica just as they would to any DB instance. Amazon RDS replicates all databases in the source DB instance.

In this video, we will see a practical Demo of creating a Read Replica and how we can access it. We will create the read replica in another region in this video, however, we can also create a replica in the same region as well.

We will also see the option of how to promote read replica if we need to do in case the primary RDS instance not available.



For all the other solutions, you can reach to my website www.cloudlearning.co.in and can check Free Playlists for AWS, Linux and other Cloud-related services. You can get the full dedicated AWS, Docker, GCP course with practice exam available at a very reasonable price.

Yours,
Prashant
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website - www.cloudlearning.co.in


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