Converting Legacy Applications to Cloud Native in Kubernetes

prerequisites: Intermediate Java, Basics of Docker, Basics of Spring, Basics of Web Development and DevOps
skills learned: Refactor a legacy app for the cloud, Create REST API with Spring Boot, Containerize a Spring Boot application, Deploy microservices on Kubernetes

John Guthrie

4 weeks · 6-8 hours per week · INTERMEDIATE

In this liveProject, you’ve joined up with a company whose intranet is at least 15 years out of date. Your boss wants to update to a modern, microservices-based architecture that runs in the Cloud using Kubernetes. The IT team has kicked off this project with a new UX design for your web applications—but there’s a catch. Those old web apps have business processes built into them that can’t be rewritten from scratch. Instead, you’ve decided to transform these legacy applications into RESTful web services. You’ve chosen the old employee profile Java web app as your first conversion project, supplying a RESTful API that can provide read-and-update capabilities to other services and applications. Your challenges in this liveProject will include reviewing and modernizing the legacy app with Spring Boot and RESTful APIs, Dockerizing the app to run in a container environment, deploying it onto Kubernetes, and then testing that it’s working properly.

This project is designed for learning purposes and is not a complete, production-ready application or solution.

book resources

When you start your liveProject, you get full access to the following books for 90 days.

project author

John Guthrie

John Guthrie is an engineer at VMware, where he works in the Modern Applications Platform group, helping customers migrate their applications and infrastructure to cloud-native. He has a decades-long career working with enterprise systems and data as an administrator, developer, architect, and technical manager. His current career focuses on enabling customers, through pair-programming and other XP practices, to modernize their software and culture.

Prerequisites

This liveProject is for intermediate Java developers, who are familiar with the basics of Enterprise web development. You will need the Java JDK, Maven, and MySQL installed on your workstation. To begin this liveProject, you will need to be familiar with:

TOOLS

Basic Java
Basic Spring
Basic Docker

TECHNIQUES:

Basics of containerization
Basics of DevOps
Basics of web development

you will learn

In this liveProject, you’ll learn important technologies for Cloud development and containerization that are in high demand from modern businesses. The skills you’ll develop are easy to transfer to any Cloud Native project that makes use of Docker and Kubernetes.

Microservices development
Refactoring legacy apps for the Cloud
Creating REST APIs with Spring Boot
Docker CLI and Kubernetes CLI
Containerizing Spring Boot applications
Docker networking
Pushing Docker images to a repository
Deploying on Kubernetes
Exposing services and connecting them
Managing your deployment with autoscaling

features

Self-paced: You choose the schedule and decide how much time to invest as you build your project.
Project roadmap: Each project is divided into several achievable steps.
Get Help: While within the liveProject platform, get help from other participants and our expert mentors.
Compare with others: For each step, compare your deliverable to the solutions by the author and other participants.
book resources: Get full access to select books for 90 days. Permanent access to excerpts from Manning products are also included, as well as references to other resources.

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