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

Product typeBook
Published inMay 2022
PublisherPackt
ISBN-139781803243108
Edition1st Edition
Concepts
IT Certification
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Author (1)
Kate Gawron
Kate Gawron
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Kate Gawron

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 about Kate Gawron

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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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AWS Certified Database – Specialty (DBS-C01) Certification Guide
Published in: May 2022Publisher: PacktISBN-13: 9781803243108
© 2022 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Kate Gawron

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 about Kate Gawron

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