Dear professionals, you can now create cross-region read replicas for Amazon RDS database instances.

Available with support for version 5.6 of MySQL, this feature has been built upon Amazon Web Service existing support for read replicas. Henceforth you can create up to five in-region and cross-region replicas per source with a single API call or a couple of clicks in the AWS Management Console.

Connectikpeople recalls that, you can use this feature to implement a cross-region disaster recovery model, scale out globally, or migrate an existing database to a new

region.

This means:

1.     In case of a regional disruption, you can promote the replica to be the new master and keep your business in operation.

2.     If your application has a user base that is spread out all over the planet, you can use Cross Region Read Replicas to serve read queries from an AWS region that is close to the user.

3.     Cross Region Read Replicas make it easy for you to migrate your application from one AWS region to another. 

Finally, pay attention to replication lag when you implement any of these use cases. You can also use Amazon CloudWatch to monitor important metric, and to raise an alert if it reaches a level that is unacceptably high for your application.