Book Image

JavaScript Cloud Native Development Cookbook

By : John Gilbert
Book Image

JavaScript Cloud Native Development Cookbook

By: John Gilbert

Overview of this book

Cloud-native development is a modern approach to building and running applications that leverages the merits of the cloud computing model. With cloud-native development, teams can deliver faster and in a more lean and agile manner as compared to traditional approaches. This recipe-based guide provides quick solutions for your cloud-native applications. Beginning with a brief introduction, JavaScript Cloud-Native Development Cookbook guides you in building and deploying serverless, event-driven, cloud-native microservices on AWS with Node.js. You'll then move on to the fundamental patterns of developing autonomous cloud-native services and understand the tools and techniques involved in creating globally scalable, highly available, and resilient cloud-native applications. The book also covers multi-regional deployments and leveraging the edge of the cloud to maximize responsiveness, resilience, and elasticity. In the latter chapters you'll explore techniques for building fully automated, continuous deployment pipelines and gain insights into polyglot cloud-native development on popular cloud platforms such as Azure and Google Cloud Platform (GCP). By the end of the book, you'll be able to apply these skills to build powerful cloud-native solutions.
Table of Contents (13 chapters)

Implementing idempotence with Event Sourcing

From a business rule standpoint, it is important that events are processed exactly once; otherwise, problems may arise, such as double counting or not counting at all. However, our cloud-native systems must be resilient to failure and proactively retry to ensure no messages are dropped. Unfortunately, this means that messages may be delivered multiple times, such as when a producer re-publishes an event or a stream processor retries a batch that may have been partially processed. The solution to this problem is to implement all actions to be idempotent. This recipe demonstrates how to use Event Sourcing and a micro event store to implement idempotence.

How to do it...

  1. Create the...