Book Image

AWS Certified Developer - Associate Guide - Second Edition

By : Vipul Tankariya, Bhavin Parmar
5 (2)
Book Image

AWS Certified Developer - Associate Guide - Second Edition

5 (2)
By: Vipul Tankariya, Bhavin Parmar

Overview of this book

This book will focus on the revised version of AWS Certified Developer Associate exam. The 2019 version of this exam guide includes all the recent services and offerings from Amazon that benefits developers. AWS Certified Developer - Associate Guide starts with a quick introduction to AWS and the prerequisites to get you started. Then, this book will describe about getting familiar with Identity and Access Management (IAM) along with Virtual private cloud (VPC). Next, this book will teach you about microservices, serverless architecture, security best practices, advanced deployment methods and more. Going ahead we will take you through AWS DynamoDB A NoSQL Database Service, Amazon Simple Queue Service (SQS) and CloudFormation Overview. Lastly, this book will help understand Elastic Beanstalk and will also walk you through 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 (30 chapters)
Free Chapter
1
Overview of AWS Certified Developer - Associate Certification

Monitoring RDS instances

Once an Amazon RDS instance is created as per the present need, it is very important to observe its performance with constantly changing business requirements and application loads. It is possible to monitor the instance's CPU utilization, DB connections, free storage space, free memory, and many other parameters. It helps to identify bottlenecks and will also give you the opportunity to minimize monthly billing by reducing the resource size if it is underutilized.

An alarm can be configured to take action at a specified threshold. For example, if CPU usage is above 70% for a specified consecutive time period, then send SNS notifications to the DBA. Such an alarm can be created either from the CloudWatch dashboard or from the Amazon RDS dashboard.

To create a CloudWatch alarm from the Amazon RDS dashboard, perform the following steps:

  1. Go to the Amazon...