Book Image

AWS Certified Solutions Architect ??? Associate Guide

By : Gabriel Ramirez, Stuart Scott
Book Image

AWS Certified Solutions Architect ??? Associate Guide

By: Gabriel Ramirez, Stuart Scott

Overview of this book

Amazon Web Services (AWS) is currently the leader in the public cloud market. With an increasing global interest in leveraging cloud infrastructure, the AWS Cloud from Amazon offers a cutting-edge platform for architecting, building, and deploying web-scale cloud applications. As more the rate of cloud platform adoption increases, so does the need for cloud certification. The AWS Certified Solution Architect – Associate Guide is your one-stop solution to gaining certification. Once you have grasped what AWS and its prerequisites are, you will get insights into different types of AWS services such as Amazon S3, EC2, VPC, SNS, and more to get you prepared with core Amazon services. You will then move on to understanding how to design and deploy highly scalable applications. Finally, you will study security concepts along with the AWS best practices and mock papers to test your knowledge. By the end of this book, you will not only be fully prepared to pass the AWS Certified Solutions Architect – Associate exam but also capable of building secure and reliable applications.
Table of Contents (26 chapters)
22
Mock Test 1
23
Mock Test 2

ELB attributes

We will go through the ELB attributes in the following sections.

Stateless versus stateful

Robust scalable and fault-tolerant architectures are designed using stateless servers: servers which do not handle any user state like shopping carts, state between pages and authentication tokens. Services like DynamoDB and ElastiCache are great options to offload temporary session data to an external service, so when applications fail they do it gracefully.

Stateful applications, on the other hand, do manage conversational state with the end user and are not fault tolerant, for these legacy applications you can enable sticky sessions which are a good way to provide session affinity with the persistent server; once this...