Book Image

Implementing Cloud Design Patterns for AWS - Second Edition

By : Sean Keery, Clive Harber, Marcus Young
Book Image

Implementing Cloud Design Patterns for AWS - Second Edition

By: Sean Keery, Clive Harber, Marcus Young

Overview of this book

Whether you're just getting your feet wet in cloud infrastructure or already creating complex systems, this book will guide you through using the patterns to fit your system needs. Starting with patterns that cover basic processes such as source control and infrastructure-as-code, the book goes on to introduce cloud security practices. You'll then cover patterns of availability and scalability and get acquainted with the ephemeral nature of cloud environments. You'll also explore advanced DevOps patterns in operations and maintenance, before focusing on virtualization patterns such as containerization and serverless computing. In the final leg of your journey, this book will delve into data persistence and visualization patterns. You'll get to grips with architectures for processing static and dynamic data, as well as practices for managing streaming data. By the end of this book, you will be able to design applications that are tolerant of underlying hardware failures, resilient against an unexpected influx of data, and easy to manage and replicate.
Table of Contents (20 chapters)
Title Page
Dedication
About Packt
Contributors
Preface
Free Chapter
1
Introduction to Amazon Web Services
Index

Events


Events are messages in response to an action. The action can be anything from user interactions with your application to intra-service messages. They can come from internal and external sources.

CloudWatch events are system events that are logged in near real time in order to describe changes in the infrastructure. Simple rules are used to map events to streams for analysis.

Concepts

Before you begin using CloudWatch Events, you should understand the following concepts:

  • Events: A change in the AWS environment is indicated by an event. Events can be generated by AWS sources when their state undergoes any changes. AWS CloudTrail publishes events when an API call is made. Custom application-level events can be generated and published to CloudWatch Events. We can also set up scheduled events on a periodic basis. For a list of services that generate events, and sample events from each service, you can refer to CloudWatch Events Event Examples From Supported Services (https://docs.aws.amazon...