Book Image

Building Microservices with .NET Core

By : Gaurav Aroraa, Lalit Kale, Manish Kanwar
Book Image

Building Microservices with .NET Core

By: Gaurav Aroraa, Lalit Kale, Manish Kanwar

Overview of this book

Microservices is an architectural style that promotes the development of complex applications as a suite of small services based on business capabilities. This book will help you identify the appropriate service boundaries within the business. We'll start by looking at what microservices are, and what the main characteristics are. Moving forward, you will be introduced to real-life application scenarios, and after assessing the current issues, we will begin the journey of transforming this application by splitting it into a suite of microservices. You will identify the service boundaries, split the application into multiple microservices, and define the service contracts. You will find out how to configure, deploy, and monitor microservices, and configure scaling to allow the application to quickly adapt to increased demand in the future. With an introduction to the reactive microservices, you strategically gain further value to keep your code base simple, focusing on what is more important rather than the messy asynchronous calls.
Table of Contents (10 chapters)

Need for a new deployment paradigm


The highest level of isolation for an application can be achieved by raising a new physical machine or bare metal server. So there is a server with its own operating system running on top of it and managing all system resources. This was regular stuff in legacy applications. But it is not practical for modern applications. Modern applications are massive systems. Some examples of these systems are Amazon, Netflix, and Nike, or even traditional financial banks, such as ING. These systems are hosted on tens of thousands of servers. These kinds of modern applications demand ultra-scalability to serve to their millions of users. For a microservice architecture, it does not make any sense to set up a new server just to run a small service on top of it.

With the new CPU architectural breakthroughs, one of the options that emerged is virtual machines. Virtual machines abstract out all the hardware interactions of an operating system through the hypervisor technology...