Book Image

The Definitive Guide to Modernizing Applications on Google Cloud

By : Steve (Satish) Sangapu, Dheeraj Panyam, Jason Marston
Book Image

The Definitive Guide to Modernizing Applications on Google Cloud

By: Steve (Satish) Sangapu, Dheeraj Panyam, Jason Marston

Overview of this book

Legacy applications, which comprise 75–80% of all enterprise applications, often end up being stuck in data centers. Modernizing these applications to make them cloud-native enables them to scale in a cloud environment without taking months or years to start seeing the benefits. This book will help software developers and solutions architects to modernize their applications on Google Cloud and transform them into cloud-native applications. This book helps you to build on your existing knowledge of enterprise application development and takes you on a journey through the six Rs: rehosting, replatforming, rearchitecting, repurchasing, retiring, and retaining. You'll learn how to modernize a legacy enterprise application on Google Cloud and build on existing assets and skills effectively. Taking an iterative and incremental approach to modernization, the book introduces the main services in Google Cloud in an easy-to-understand way that can be applied immediately to an application. By the end of this Google Cloud book, you'll have learned how to modernize a legacy enterprise application by exploring various interim architectures and tooling to develop a cloud-native microservices-based application.
Table of Contents (26 chapters)
1
Section 1: Cloud-Native Application Development and App Modernization in Google Cloud
5
Section 2: Selecting the Right Google Cloud Services
10
Section 3: Rehosting and Replatforming the Application
17
Section 4: Refactoring the Application on Cloud-Native/PaaS and Serverless in Google Cloud

Summary

The messaging system of an application is an integral part of any application, and you now have a deep understanding of how messaging systems work in a cloud-native architecture and the services you can use to fully utilize the cloud's potential. The messaging systems and concepts in a cloud-native application are different due to the inherent isolated nature of containerized applications. In order to maintain this isolation and enjoy the benefits of a cloud-native application, the messaging system used must also be loosely coupled and flexible. Thankfully, all cloud-native applications allow for their microservices to communicate with each other through APIs, without any additional service or platform.

However, while REST APIs are not a bad solution, they can be limiting in many scenarios, and managing hundreds of APIs can become more difficult and overall very inefficient as your application grows and evolves. To keep your messaging system clean and efficient, it...