Book Image

AWS Certified Developer - Associate Guide

By : Vipul Tankariya, Bhavin Parmar
Book Image

AWS Certified Developer - Associate Guide

By: Vipul Tankariya, Bhavin Parmar

Overview of this book

AWS Certified Developer - Associate Guide starts with a quick introduction to AWS and the prerequisites to get you started. Then, this book gives you a fair understanding of core AWS services and basic architecture. Next, this book will describe about getting familiar with Identity and Access Management (IAM) along with Virtual private cloud (VPC). Moving ahead you will learn about Elastic Compute cloud (EC2) and handling application traffic with Elastic Load Balancing (ELB). Going ahead you we will talk about Monitoring with CloudWatch, Simple storage service (S3) and Glacier and CloudFront along with other AWS storage options. Next we will take you through AWS DynamoDB – A NoSQL Database Service, Amazon Simple Queue Service (SQS) and CloudFormation Overview. Finally, this book covers understanding Elastic Beanstalk and overview of AWS lambda. At the end of this book, we will cover enough topics, tips and tricks along with mock tests for you to be able to pass the AWS Certified Developer - Associate exam and develop as well as manage your applications on the AWS platform.
Table of Contents (29 chapters)
Title Page
Credits
About the Author
Acknowledgments
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Dedication
Preface
Index

Creating a snapshot


A snapshot is a frozen image of the DB instance's storage volume. It helps to restore a database to a particular point in time. Usually, point-in-time recovery is performed when a database is corrupted or by mistake some data has been dropped (that is, deleted) to bring a database back to the last healthy state. At the time of creating an Amazon RDS instance, a daily snapshot schedule has already been configured, but sometimes it may be required to take a manual snapshot of the DB instance before performing any maintenance tasks on the database. A snapshot will back up an entire DB instance including all databases and tables and other resources existing on it.

Creating a snapshot for a Multi-AZ DB instance doesn't bring many performance implications, but taking a snapshot for a single-AZ DB instance may suspend DB I/O for a few seconds to minutes. Manual snapshots can be taken using the Amazon Management Console, CLI, or APIs. To take a manual snapshot using the Management...