Building Applications in the Cloud: Concepts, Patterns, and Projects

283 Pages·2011·2.06 MB·English

by  Christopher M. Moyer

Building Applications in the Cloud
Concepts, Patterns, and Projects
Christopher M. Moyer
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Library of Congress Cataloging-in-Publication Data: Howard, Ken, 1962-
Individuals and interactions : an agile guide / Ken Howard,
Barry Rogers.
p. cm.
Includes bibliographical references and index.
ISBN 978-0-321-71409-1 (pbk. : alk. paper) 1. Teams in the
workplace. 2. Communication. I. Rogers, Barry, 1963-II. Title.
HD66.H695 2011
658.4'022 -- dc22
2011001898
Copyright © 2011 Pearson Education, Inc.
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ISBN-13: 978-0-321-72020-7
ISBN-10: 0-321-72020-2
Text printed in the United States on recycled paper at R.R. Donnelley & Sons,
Crawfordsville, Indiana.
First printing April 2011
Editor-in-Chief
Mark Taub
Acquisitions Editor
Trina MacDonald
Development Editor
Michael Thurston
Managing Editor
Kristy Hart
Senior Project Editor
Lori Lyons
Copy Editor
Apostrophe Editing Services
Indexer
Ken Johnson
Proofreader
Sheri Cain
Technical Reviewers
Kevin Davis
Mocky Habeeb
Colin Percival
Publishing Coordinator
Olivia Basegio
Cover Designer
Chuti Prasertsith
Cover Illustrator
Lynn A. Moyer
www.designbylynn.com
Compositor
Nonie Ratcliff
Dedication
To my wonderful wife Lynn, without whom this book would never have been
finished.
Table of Contents
Preface
About the Author
Introduction
What Is Cloud Computing?
The Evolution of Cloud Computing
The Main Frame
The PC Revolution
The Fast Internet
The Cloud
HTML5 and Local Storage
The Dawn of Mobile Devices
Threading, Parallel Processing, and Parallel Computing
How Does Cloud-Based Development Differ from Other Application
Development?
What to Avoid
Getting Started in the Cloud
Selecting a Cloud Pattern
Implementing a Cloud Pattern
Concepts
1. Fundamentals of Cloud Services
Origins of Cloud Computing
What Is a Cloud Service?
Compute
Storage
Connectivity
The Legacy Pattern
Just Because It’s in the Cloud Doesn’t Mean It Scales
Failure as a Feature
Consistency, Availability, and Partition Tolerance
Consistency
Availability
Partition Tolerance
Eventual Consistency
Summary
2. Making Software a Service
Tools Used in This Book
Signing Up for Amazon Web Services
Installing boto
Setting Up the Environment
Testing It All
What Does Your Application Need?
Data Layer
Introducing the AWS Databases
Application Layer
Using Elastic Load Balancing
Adding Servers to the Load Balancer
Automatically Registering an Instance with a Load Balancer
HTTP and REST
The Header
The Body
Methods
Authorization Layer
Client Layer
Browser-Based Clients
Native Applications
Summary
3. Cloud Service Providers
Amazon Web Services
Simple Storage Service (S3)
CloudFront
Simple Queue Service (SQS)
Elastic Compute Cloud (EC2)
Elastic Block Storage (EBS)
Elastic Load Balancing (ELB)
SimpleDB
Relational Database Service (RDS)
Simple Notification Service (SNS)
Virtual Private Cloud (VPC)
Google Cloud
AppEngine
Google Storage
Rackspace Cloud
CloudFiles
CloudServers
CloudSites
Summary
Patterns
4. Designing an Image
Prepackaged Images
Overview
Reasons for Usage
Description
Implementation
Example
Summary
Singleton Instances
Overview
Reasons for Usage
Description
Implementation