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Microservices with Azure

Microservices with Azure

By : Rai, Namit Tanasseri
3 (2)
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Microservices with Azure

Microservices with Azure

3 (2)
By: Rai, Namit Tanasseri

Overview of this book

Microsoft Azure is rapidly evolving and is widely used as a platform on which you can build Microservices that can be deployed on-premise and on-cloud heterogeneous environments through Microsoft Azure Service Fabric. This book will help you understand the concepts of Microservice application architecture and build highly maintainable and scalable enterprise-grade applications using the various services in Microsoft Azure Service Fabric. We will begin by understanding the intricacies of the Microservices architecture and its advantages over the monolithic architecture and Service Oriented Architecture (SOA) principles. We will present various scenarios where Microservices should be used and walk you through the architectures of Microservice-based applications. Next, you will take an in-depth look at Microsoft Azure Service Fabric, which is the best–in-class platform for building Microservices. You will explore how to develop and deploy sample applications on Microsoft Azure Service Fabric to gain a thorough understanding of it. Building Microservice-based application is complicated. Therefore, we will take you through several design patterns that solve the various challenges associated with realizing the Microservices architecture in enterprise applications. Each pattern will be clearly illustrated with examples that you can keep referring to when designing applications. Finally, you will be introduced to advanced topics such as Serverless computing and DevOps using Service Fabric, to help you undertake your next venture with confidence.
Table of Contents (13 chapters)
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The Microservices solution

Unlike SOA, which promotes cohesion of services, Microservices promote the principle of isolation of services. Each Microservice should have minimal interaction with other Microservices that are part of the system. This gives the advantage of independent scale and deployment to the Microservices.

Let's redraw the architecture of the car rental company using the Microservices architecture principle:

Microservices architecture

In the revised architecture, we have created a Microservice corresponding to each domain of the original system. This architecture does away with the integration and orchestration component. Unlike SOA, which requires all services to be connected to an ESB, Microservices can communicate with each other through simple message passing. We will soon look at how Microservices can communicate.

Also, note that we have used the principles of Domain-Driven Design (DDD), which is the principle that should be used for designing a Microservices-based system. A Microservice should never spawn across domains. However, each domain can have multiple Microservices. Microservices avoid communicating with each other and for the most part use the user interface for communication.

In the revised setup, each team can develop and manage a Microservice. Rather than distributing teams around technologies and creating multiple channels of communication, this distribution can increase agility. For instance, adding a new form of payment requires making a change in the payment Microservice and therefore requires communication with only a single team.

Isolation between services makes adoption of Continuous Delivery much simpler. This allows you to safely deploy applications and roll out changes and revert deployments in case of failures.

Since services can be individually versioned and deployed, significant savings are attained in the deployment and testing of Microservices.

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