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AWS Certified Database – Specialty (DBS-C01) Certification Guide

You're reading from  AWS Certified Database – Specialty (DBS-C01) Certification Guide

Product type Book
Published in May 2022
Publisher Packt
ISBN-13 9781803243108
Pages 472 pages
Edition 1st Edition
Languages
Concepts
Author (1):
Kate Gawron Kate Gawron
Profile icon Kate Gawron
LinkedIn
Kate Gawron is a full-time senior database consultant and part-time future racing driver. She was a competitor in Formula Woman, and she aspires to become a professional Gran Turismo (GT) racing driver. Away from the racetrack, Kate has worked with Oracle databases for 18 years and AWS for five years. She holds four AWS certifications, including the AWS Certified Database – Specialty certification as well as two professional Oracle qualifications. Kate currently works as a senior database architect, where she works with customers to migrate and refactor their databases to work optimally within the AWS cloud.
See other products by Kate Gawron

Table of Contents (24) Chapters

Preface 1. Part 1: Introduction to Databases on AWS
2. Chapter 1: AWS Certified Database – Specialty Overview 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...

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Authors (1)

Profile icon Kate Gawron
LinkedIn
Kate Gawron is a full-time senior database consultant and part-time future racing driver. She was a competitor in Formula Woman, and she aspires to become a professional Gran Turismo (GT) racing driver. Away from the racetrack, Kate has worked with Oracle databases for 18 years and AWS for five years. She holds four AWS certifications, including the AWS Certified Database – Specialty certification as well as two professional Oracle qualifications. Kate currently works as a senior database architect, where she works with customers to migrate and refactor their databases to work optimally within the AWS cloud.
Read more
See other products by Kate Gawron

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