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AWS Certified Developer - Associate Guide

You're reading from   AWS Certified Developer - Associate Guide Your one-stop solution to passing the AWS developer's 2019 (DVA-C01) certification

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Product type Paperback
Published in Jun 2019
Publisher Packt
ISBN-13 9781789617313
Length 812 pages
Edition 2nd Edition
Tools
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Authors (2):
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Bhavin Parmar Bhavin Parmar
Author Profile Icon Bhavin Parmar
Bhavin Parmar
Vipul Tankariya Vipul Tankariya
Author Profile Icon Vipul Tankariya
Vipul Tankariya
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Toc

Table of Contents (30) Chapters Close

Preface 1. Overview of AWS Certified Developer - Associate Certification FREE CHAPTER 2. Understanding the Fundamentals of Amazon Web Services 3. Identity and Access Management (IAM) 4. Virtual Private Clouds 5. Getting Started with Elastic Compute Cloud (EC2) 6. Handling Application Traffic with ELB 7. Monitoring with CloudWatch 8. Simple Storage Service, Glacier, and CloudFront 9. Other AWS Storage Options 10. AWS Relational Database Service 11. AWS DynamoDB - A NoSQL Database Service 12. Amazon Simple Queue Service (SQS) 13. Simple Notification Service (SNS) 14. AWS Simple Workflow Service (SWF) 15. CloudFormation Overview 16. Understanding Elastic Beanstalk 17. Overview of AWS Lambda 18. Key Management Services 19. Working with AWS Kinesis 20. Working with AWS CodeBuild 21. Getting Started with AWS CodeDeploy 22. Working with AWS CodePipeline 23. CI/CD on AWS 24. Serverless Computing 25. Amazon Route 53 26. ElastiCache Overview 27. Mock Tests 28. Assessments 29. Another Book You May Enjoy

Introducing ELB

ELB is an AWS service that automatically distributes incoming network or application traffic to a number of EC2 instances. It monitors the health of each of the EC2 instances associated with it and forwards traffic only to healthy instances. ELB provides a single point of contact for the EC2 instances behind ELB. Each of the EC2 instances are marked with a status, either InService if it is healthy, or OutOfService if it is unhealthy. Traffic is routed only to InService instances. ELB provides a single point of contact for the application traffic that is hosted on multiple EC2 instances. By routing traffic only to healthy instances, ELB provides fault tolerance to the application and ensures the high availability of the application. The following diagram shows how multiple EC2 instances are hosted behind ELB:

Figure 6.1: ELB
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