Book Image

Cloud Foundry for Developers

By : Rahul Kumar Jain, Rick Farmer, Wu
Book Image

Cloud Foundry for Developers

By: Rahul Kumar Jain, Rick Farmer, Wu

Overview of this book

Cloud Foundry is the open source platform to deploy, run, and scale applications. Cloud Foundry is growing rapidly and a leading product that provides PaaS (Platform as a Service) capabilities to enterprise, government, and organizations around the globe. Giants like Dell Technologies, GE, IBM, HP and the US government are using Cloud Foundry innovate faster in a rapidly changing world. Cloud Foundry is a developer’s dream. Enabling them to create modern applications that can leverage the latest thinking, techniques and capabilities of the cloud, including: ? DevOps ? Application Virtualization ? Infrastructure agnosticism ? Orchestrated containers ? Automation ? Zero downtime upgrades ? A/B deployment ? Quickly scaling applications out or in This book takes readers on a journey where they will first learn the Cloud Foundry basics, including how to deploy and scale a simple application in seconds. Readers will build their knowledge of how to create highly scalable and resilient cloud-native applications and microservices running on Cloud Foundry. Readers will learn how to integrate their application with services provided by Cloud Foundry and with those external to Cloud Foundry. Readers will learn how to structure their Cloud Foundry environment with orgs and spaces. After that, we’ll discuss aspects of continuous integration/continuous delivery (CI/CD), monitoring and logging. Readers will also learn how to enable health checks, troubleshoot and debug applications. By the end of this book, readers will have hands-on experience in performing various deployment and scaling tasks. Additionally, they will have an understanding of what it takes to migrate and develop applications for Cloud Foundry.
Table of Contents (12 chapters)

What is a cloud-native application?


A cloud-native application is one that wholly embraces the traits and behavior of a Cloud platform, independently of its underlying infrastructure. Such applications are effectively highly scalable and operate in a resilient and consistent manner throughout its lifecycle.

Let us take a dive into this definition. A Cloud platform is one that operates over or is built into a Cloud infrastructure. Cloud Foundry, as described in Chapter 1, is such a platform that offers the benefits of the orchestration of containers over a number of cells (Virtual Machines), which offers the capability for application scaling, resiliency, and consistency. Application/horizontal scaling enables efficient leveraging of resources on an infrastructure, in a way that application instances could be scaled up or down to cater for varying levels of incoming traffic loads. This would maximize the utilization of the infrastructure. Contrary to this is the concept of vertical scaling...