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

Implementing the software

Now would be a good time to visit the GitHub repository for this book and review the code for the sample application. This can be found at https://github.com/PacktPublishing/Modernizing-Applications-with-Google-Cloud-Platform. The following sections of this chapter examine key aspects of the implementation to ensure we understand how the architecture for the example application has been implemented.

Spring Boot configuration

We discussed earlier that Spring Boot is an opinionated auto-configuring framework, so what does this mean in practice? Simply put, we make sure the appropriate dependencies are available and enable the features we are interested in. This sets up a sane set of defaults that works for most situations (but not all).

In our example application, the dependencies are managed by Gradle, so in our build.gradle file, we have the following configuration in the dependencies section:

build.gradle

implementation 'org.springframework...