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)

Communication between microservices


In the preceding section, we separated our Order module into Order Services and discussed how we can break down the foreign key relationship between ORDER and PRODUCT tables.

In a monolithic application, we have a single repository that queries the database to fetch the records from both ORDER and PRODUCT tables. However, in our upcoming microservice application, we will segregate repositories between Order Service and Product Service. With each service having its respective database, each one would access its own database only. Order Service would only be able to access order Database, whereas Product Service would be able to access product Database only. Order Service should not be allowed to access product Database and vice versa. Refer to the following image:

Note

We will discuss communication between microservices in Chapter 3, Integration Techniques, in detail.

In the preceding figure, we see that our UI is interacting with Order Service and Product...