RDS

Tldr

• Amazon Relational Database Service is a service that enables you to run relational databases in the AWS Cloud.
• Amazon RDS is a managed service that automates tasks such as hardware provisioning, database setup, patching, and backups.
• With these capabilities, you can spend less time completing administrative tasks and more time using data to innovate your applications.

RDS offerings

Amazon RDS is available on 6 database engines, which optimize for memory, performance, or input/output (I/O). Supported database engines include:

- Amazon Aurora
- PostgreSQL
- MySQL
- MariaDB
- Oracle Database
- Microsoft SQL Server

Aurora

Amazon Aurora is an enterprise-class relational database. It is compatible with MySQL and PostgreSQL relational databases. It is up to 5 times faster than standard MySQL databases and up to 3 times faster than standard PostgreSQL databases.

Amazon Aurora helps to reduce your database costs by reducing unnecessary input/output (I/O) operations, while ensuring that your database resources remain reliable and available.

Consider Amazon Aurora if your workloads require high availability. It replicates 6 copies of your data across 3 Availability Zones and continuously backs up your data to Amazon S3.

Notes

• Multi-AZ RDS instances use synchronous replication to push changes.
• You cannot encrypt a running RDS instance; you have to create the instance with encryption enabled.
• Amazon RDS backups can be retained for up to 35 days, and no longer.

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