Book Image

Azure Serverless Computing Cookbook - Third Edition

By : Praveen Kumar Sreeram
Book Image

Azure Serverless Computing Cookbook - Third Edition

By: Praveen Kumar Sreeram

Overview of this book

This third edition of Azure Serverless Computing Cookbook guides you through the development of a basic back-end web API that performs simple operations, helping you understand how to persist data in Azure Storage services. You'll cover the integration of Azure Functions with other cloud services, such as notifications (SendGrid and Twilio), Cognitive Services (computer vision), and Logic Apps, to build simple workflow-based applications. With the help of this book, you'll be able to leverage Visual Studio tools to develop, build, test, and deploy Azure functions quickly. It also covers a variety of tools and methods for testing the functionality of Azure functions locally in the developer's workstation and in the cloud environment. Once you're familiar with the core features, you'll explore advanced concepts such as durable functions, starting with a "hello world" example, and learn about the scalable bulk upload use case, which uses durable function patterns, function chaining, and fan-out/fan-in. By the end of this Azure book, you'll have gained the knowledge and practical experience needed to be able to create and deploy Azure applications on serverless architectures efficiently.
Table of Contents (14 chapters)
13
Index

Implementing defensive applications using Azure functions and queue triggers

For many applications, even after performing multiple tests of different environments, there might still be unforeseen reasons that an application might fail. Developers and architects cannot predict all unexpected inputs throughout the lifespan of an application being used by business users or general users. So, it's good practice to make sure that your application alerts you if there are any errors or unexpected issues with the application.

In this recipe, we'll learn how Azure functions help us handle (and receive alerts about) errors with minimal code.

Getting ready

Before starting the recipe, please make sure you have done the following:

  • Create a storage account using the Azure portal if you have not created one.
  • Install Azure Storage Explorer from http://storageexplorer.com/ if you have not installed it yet.

How to do it…

In this section, we'll perform...