Book Image

Serverless computing in Azure with .NET

Book Image

Serverless computing in Azure with .NET

Overview of this book

Serverless architecture allows you to build and run applications and services without having to manage the infrastructure. Many companies have started adopting serverless architecture for their applications to save cost and improve scalability. This book will be your companion in designing Serverless architecture for your applications using the .NET runtime, with Microsoft Azure as the cloud service provider. You will begin by understanding the concepts of Serverless architecture, its advantages and disadvantages. You will then set up the Azure environment and build a basic application using a sample text sentiment evaluation function. From here, you will be shown how to run services in a Serverless environment. We will cover the integration with other Azure and 3rd party services such as Azure Service Bus, as well as configuring dependencies on NuGet libraries, among other topics. After this, you will learn about debugging and testing your Azure functions, and then automating deployment from source control. Securing your application and monitoring its health will follow from there, and then in the final part of the book, you will learn how to Design for High Availability, Disaster Recovery and Scale, as well as how to take advantage of the cloud pay-as-you-go model to design cost-effective services. We will finish off with explaining how azure functions scale up against AWS Lambda, Azure Web Jobs, and Azure Batch compare to other types of compute-on-demand services. Whether you’ve been working with Azure for a while, or you’re just getting started, by the end of the book you will have all the information you need to set up and deploy applications to the Azure Serverless Computing environment.
Table of Contents (16 chapters)

The importance of testing


Testing is a crucial part of the application life cycle, and it differs greatly from debugging. Although debugging certainly involves execution testing, the debugging activity is aimed at locating and correcting code defects, while testing is aimed at demonstrating application correctness. The testing process involves proving that the software requirements are implementable in practice, and that they have been implemented according to the specification. Certain testing approaches, such as correctness proofs and peer reviews, don't even require code execution.

In the modern world, most software development teams aim to create a continuous integration and/or continuous delivery (CI/CD) framework. Automated testing is a prerequisite of any type of CI/CD framework, as you have to verify the application correctness prior to pushing the code changes to production.

Testability has been one of the challenges of serverless compute since its arrival. Luckily for us, the new...