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Building Microservices with .NET Core

By : Soumya Mukherjee, Gaurav Aroraa, Lalit Kale, Manish Kanwar

3.3 (4)

Buy this Book

Building Microservices with .NET Core

3.3 (4)

By: Soumya Mukherjee, Gaurav Aroraa, Lalit Kale, Manish Kanwar

Buy this Book

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.

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

What Are Microservices?

Origin of microservices

Discussing microservices

Monolithic architecture

Understanding the microservice architecture

Why should we use microservices?

How does the microservice architecture work?

Advantages of microservices

SOA versus microservices

Prerequisites of the microservice architecture

Understanding problems with the monolithic architecture style

Prerequisites for microservices

Identifying decomposition candidates within monolithic

Summary

Building Microservices

Size of microservices

What makes a good service?

DDD and its importance for microservices

The concept of Seam

Communication between microservices

Revisiting the case study--Flix One

Summary

Integration Techniques

Communication between services

Integration patterns

Summary

Testing Strategies

How to test microservices

Testing strategies (testing approach)

Testing pyramid

Types of microservice tests

Tests in action

Summary

Deployment

Monolithic application deployment challenges

Understanding the deployment terminology

Prerequisites for successful microservice deployments

Isolation requirements for microservice deployment

Need for a new deployment paradigm

Containers

Docker quick introduction

Security

Security in monolithic applications

Security in microservices

Summary

Monitoring

Instrumentation and telemetry

The need for monitoring

Monitoring challenges

Logging

Monitoring in Azure Cloud

Summary

Testing microservices is a bit different from applications built on the traditional architectural style. In a .NET monolithic application, testing is a bit easier as compared to microservices, and it provides implementation independence and short delivery cycles. Microservices face challenges while performing the testing. With the help of the testing pyramid concept, we can strategize how to go with testing. Referring to the testing pyramid, we can easily see that unit tests provide the facility to test a small function of a class and are less time-consuming. On the other hand, the top layer of the testing pyramid enters a large scope with system or end-to-end testing, and these tests are time taking and much expensive. Consumer-driven contracts are a very useful way to test microservices. Pact-net is an open source tool meant for this. Finally, we went through the actual test implementation.

In the...