2. Designing Cloud Applications – An Architect's Perspective | Learning AWS

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Learning AWS

3.1 (9)

Learning AWS

3.1 (9)

Overview of this book

With the increasing global interest in leveraging cloud infrastructure, AWS Cloud from Amazon offers a cutting-edge platform for architecting, building, and deploying web-scale cloud applications. The variety of features available within AWS can reduce overall infrastructure costs and accelerate the development process for both large enterprises and startups alike. Beginning with basic cloud concepts, you'll learn about the various cloud services models and the design implications of multi-tenant applications. You'll then design, implement, and deploy a multi-tier, scalable, highly-available and secure application on the AWS platform. At every step, we explain the key guiding principles driving real-world production-ready application architectures. Finally, you will learn how to automate your cloud infrastructure, set up operations, application monitoring, and DevOps pipeline.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Cloud 101 – Understanding the Basics

1. Cloud 101 – Understanding the Basics

What is cloud computing?

Public, private, and hybrid clouds

Cloud service models – IaaS, PaaS, and SaaS

Setting up your AWS account

The AWS management console

Summary

2. Designing Cloud Applications – An Architect's Perspective

2. Designing Cloud Applications – An Architect's Perspective

Multi-tier architecture

Designing for multi-tenancy

Designing for scale

Automating infrastructure

Designing for failure

Designing for parallel processing

Designing for performance

Designing for eventual consistency

Estimating your cloud computing costs

A typical e-commerce web application

Setting up our development environment

Summary

3. AWS Components, Cost Model, and Application Development Environments

3. AWS Components, Cost Model, and Application Development Environments

AWS components

Optimizing cloud infrastructure costs

Application development environments

Setting up the AWS infrastructure

Summary

4. Designing for and Implementing Scalability

4. Designing for and Implementing Scalability

Defining scalability objectives

Designing scalable application architectures

Leveraging AWS infrastructure services for scalability

Setting up auto scaling

Summary

5. Designing for and Implementing High Availability

5. Designing for and Implementing High Availability

Defining availability objectives

The nature of failures

Using AWS for disaster recovery

Setting up high availability

Summary

6. Designing for and Implementing Security

6. Designing for and Implementing Security

Defining security objectives

Understanding security responsibilities

Best practices in implementing AWS security

Setting up security

Summary

7. Deploying to Production and Going Live

7. Deploying to Production and Going Live

Managing infrastructure, deployments, and support at scale

Using CloudWatch for monitoring

Using AWS solutions for backup and archiving

Planning for production go-live activities

Setting up for production

Summary

Index

Index

Multi-tier architecture

A simple three-tier architecture consists of a UI tier, an application or business tier, and a data tier.

These tiers are ordinarily implemented using web servers, application servers, and databases, respectively.

Cloud applications can be deployed at multiple locations. Typically, these locations are regions (that is, separate geographical areas) or zones (that is, distinct locations within a region connected by low latency networks).

This tiered architecture on the cloud supports auto scaling and load balancing of web servers and application servers. Further, it also implements a master-slave database model across two different zones or data centers (connected with high speed links). The master database is synchronously replicated to the slave. Overall, the architecture represents a simple way to achieve a highly scalable and highly available application in a cloud environment.

Let's take a look at the following diagram:

It is also possible to separate the tiers across...

Visually different images

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