Best practices for deploying RDS instances

When deploying RDS instances in our VPC, we need to consider the following requirements of the database service:

• Security requirements, to prevent unauthorized or unnecessary access
• High availability requirements
• Performance requirements

RDS security

Within a VPC, RDS instances will need to be deployed with a security group that only allows communication from the correct source. For example, when using EC2 instances to communicate with RDS instances, always specify only the security group of the instances themselves. This will allow for you to dynamically replace application instances in the EC2, for example, when working with autoscaling EC2 clusters. The best practice for database...