AWS Certified Cloud Practitioner Exam Guide: Build your cloud computing knowledge and build your skills as an AWS Certified Cloud Practitioner (CLF-C01) by Rajesh Daswani
Author:Rajesh Daswani [Daswani, Rajesh]
Language: eng
Format: azw3, pdf
Publisher: Packt Publishing
Published: 2022-01-13T00:00:00+00:00
Figure 8.6 â AWS RDS with read replicas
Read replicas can also be configured for cross-Region replication, as depicted in the preceding diagram. (The exception is for the Microsoft SQL Server engine, which doesn't allow Multi-AZ read replicas or cross-Region read replicas.) This means that you can maintain read copies of your database in a different Region that can be used by other applications that may only require read access to the data. Storing read replicas across Regions can also help you address any compliance or regulatory needs that stipulate that you need to maintain copies of your data at a considerable distance.
You can also set the read replica as Multi-AZ, which will enable you to use the read replicas as a DR target. This means that if you ever need to promote the read replica to a standalone database, it will already be configured for Multi-AZ. This feature is available for MySQL, MariaDB, PostgreSQL, and Oracle engines. Finally you can add up to five read replicas to each DB instance.
Furthermore, in the event of a major disaster, a read replica can also be promoted to become the master copy, after which it becomes independent of the original master copy of the database.
In this section, we examined Amazon RDS and the key offerings by its managed RDS. We reviewed the various database engines on offer, concepts related to high availability and scalability, as well as backup and recovery.
In the next section, we will briefly look at one AWS RDS offering, specifically Amazon Aurora. While Amazon Aurora is an RDS database solution from AWS, it offers several enhanced capabilities.
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AWS Certified Cloud Practitioner Exam Guide: Build your cloud computing knowledge and build your skills as an AWS Certified Cloud Practitioner (CLF-C01) by Rajesh Daswani.pdf
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