You're reading from AWS Certified Database – Specialty (DBS-C01) Certification Guide A comprehensive guide to becoming an AWS Certified Database specialist

Product type Paperback

Published in May 2022

Publisher Packt

ISBN-13 9781803243108

Length 472 pages

Edition 1st Edition

Tools

AWS

Concepts

IT Certification

Author (1):

Kate Gawron

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Table of Contents (24) Chapters

Preface

1. Part 1: Introduction to Databases on AWS

2. Chapter 1: AWS Certified Database – Specialty Overview FREE CHAPTER

3. Chapter 2: Understanding Database Fundamentals

4. Chapter 3: Understanding AWS Infrastructure

5. Part 2: Workload-Specific Database Design

6. Chapter 4: Relational Database Service

7. Chapter 5: Amazon Aurora

8. Chapter 6: Amazon DynamoDB

9. Chapter 7: Redshift and DocumentDB

10. Chapter 8: Neptune, Quantum Ledger Database, and Timestream

11. Chapter 9: Amazon ElastiCache

12. Part 3: Deployment and Migration and Database Security

13. Chapter 10: The AWS Schema Conversion Tool and AWS Database Migration Service

14. Chapter 11: Database Task Automation

15. Chapter 12: AWS Database Security

16. Part 4: Monitoring and Optimization

17. Chapter 13: CloudWatch and Logging

18. Chapter 14: Backup and Restore

19. Chapter 15: Troubleshooting Tools and Techniques

20. Part 5: Assessment

21. Chapter 16: Exam Practice

22. Chapter 17: Answers

23. Other Books You May Enjoy

Understanding high availability and backups

Like other databases, DynamoDB will often become a critical part of your application, and your data needs to be resilient and recoverable to meet your application service level agreements. DynamoDB offers two methods to improve resilience and reliability:

Global tables
Backups

Let's start by looking at global tables.

Global tables

As DynamoDB is serverless and doesn't run in a VPC, the options you have for making it highly available are different from other AWS services. You cannot have a multi-AZ deployment here. DynamoDB offers a service called global tables to overcome this. Global tables allow you to configure a multi-region and active-active database deployment. DynamoDB will create an exact replica of your database across all the regions you specify, allowing you to create a highly available database system. If a table fails or becomes unavailable in one region, the traffic will automatically be routed...